JP2019066608A - Information communication device, display unit and laminated body - Google Patents

Abstract

To provide an information communication device that enables a portable terminal to excellently receive information even under an environment high in illuminance of external light.SOLUTION: An information communication device 100 has: a display unit 10 that displays images; a transmission unit 20 that has a light source irradiating light from a rear surface of the display unit, and transmits information with the light to be irradiated from the light source as signal light, in which the signal light transmitted from the transmission unit is received by a portable terminal via the display unit. The display unit has, in order from a side facing the transmission unit, a light diffusion plate 3, a light control layer 2, and a printing layer 1 laminated. The printing layer has a light transmissive property that transmits light to be incident upon the display unit, and the light control layer has a plurality of groove parts that extends in an arbitrary direction, and has a light transmission unit that is composed of transparent resin, and transmits the incident light; and a light absorption unit that is composed of a light absorption material arranged in the groove part. The light diffusion plate has a light reflective property that reflects the light transmitting the light transmission unit of the light control layer.SELECTED DRAWING: Figure 2

Description

  The present disclosure relates to an information communication device, a display unit, and a laminate.

  In recent years, an information communication apparatus such as digital signage is used as a tool for providing information to an unspecified number of people in a public place (for example, Patent Documents 1 and 2). Such an information communication apparatus has a display unit capable of displaying an advertisement image, a promotion image, and the like. The information communication apparatus further includes a transmission unit that emits signal light from the back of the display unit. The transmitter can transmit information by blinking the signal light. Then, the signal light emitted from the transmission unit can be received using a portable terminal or the like. Therefore, the user of the portable terminal can obtain and browse the information transmitted from the information communication apparatus via the portable terminal.

JP, 2015-119458, A International Publication No. 2015/125179

  For example, when the information communication apparatus is used outdoors where the sunlight is strong, there is a problem that it is difficult for the portable terminal to receive the information transmitted from the information communication apparatus under an environment where the illuminance of external light is high.

  The present disclosure has been made in view of the above circumstances, and it is a main object of the present invention to provide an information communication apparatus capable of favorably receiving information by a portable terminal even in an environment where the illuminance of external light is high. Do.

  The present disclosure includes a display unit that displays an image, and a transmission unit that includes a light source that emits light from the back of the display unit, and transmits information from the light source as signal light. The signal light transmitted from the transmission unit is an information communication apparatus received by a portable terminal via the display unit, the display unit including a light diffusion plate in order from the side facing the transmission unit, A light control layer and a print layer are stacked, the print layer has light transmissivity to transmit light incident on the display unit, and the light control layer has a plurality of grooves extending in any direction. A light transmitting portion which is made of a transparent resin and transmits incident light, and a light absorbing portion which is made of a light absorbing material and disposed in the groove and which absorbs light; Has light reflectivity to reflect light transmitted through the light transmitting portion of the light control layer, To provide a multicast communication apparatus.

  Further, in the present disclosure, a light source that emits light is provided, and a transmission unit that transmits information using the light emitted from the light source as signal light is provided, and the signal light transmitted from the transmission unit is portable. A light diffusion plate, a light control layer, and a print layer are stacked in order from the side that is used in an information communication device to be received by a terminal, displays an image, and faces the transmitter, and the print layer is incident The light control layer has a plurality of grooves extending in an arbitrary direction, is made of a transparent resin, and transmits light incident thereon; And a light absorbing portion configured to absorb light, wherein the light diffusing plate is configured to reflect light transmitted through the light transmitting portion of the light control layer. The display unit is provided.

  Furthermore, in the present disclosure, it has a light source for emitting light, and has a transmitting unit for transmitting information using the light emitted from the light source as signal light, and the signal light transmitted from the transmitting unit is portable. The display unit is used for a display unit to be used in an information communication apparatus, which is received by a terminal, the display unit displays an image, and has a light diffusion plate on the side facing the transmission unit. A light control layer and a print layer are laminated in order from the side opposite to the side facing the transmission unit of the light diffusion plate, having a light reflectivity to reflect incident light, and the print layer is A light transmitting portion having a light transmitting property for transmitting light incident on the display portion, the light control layer having a plurality of groove portions extending in an arbitrary direction, being made of a transparent resin and transmitting the incident light; And a light absorbing portion configured to absorb light, which is made of a light absorbing material disposed in the groove portion. That, to provide a laminated body.

  The information communication apparatus of the present disclosure has the effect of being able to better receive information by the portable terminal even in an environment where the illuminance of external light is high.

It is an explanatory view for explaining an information communication device of this indication. It is an explanatory view for explaining an information communication device of this indication. It is a schematic perspective view which shows an example of the light control layer in this indication. It is a schematic perspective view which shows an example of the light transmissive part in this indication. It is an explanatory view for explaining a slot in the present disclosure. It is an explanatory view for explaining a slot in the present disclosure. It is a schematic perspective view which shows the other example of the light transmissive part in this indication. It is an explanatory view for explaining a light control layer in the present disclosure. It is a schematic plan view which shows the other example of the light control layer in this indication. It is a schematic plan view which shows the other example of the light control layer in this indication. It is an explanatory view for explaining an information communication device of this indication. It is a schematic perspective view which shows an example of the optical function layer in this indication. It is a schematic sectional drawing which shows the other example of the optical function layer in this indication. It is a schematic perspective view which shows the other example of the optical function layer in this indication. It is an explanatory view for explaining an information communication device of this indication. It is a schematic sectional drawing which shows an example of the low reflection layer in this indication. It is an explanatory view explaining composition of a reference example and a comparative example.

  In this specification, when a certain configuration such as a certain member or a certain region is "above (or below)" or "on the surface" of another configuration such as another member or another region, Unless limited, this includes not only directly above (or just below) other configurations, but also above (or below) other configurations, ie, above (or below) other configurations It also includes the case where another component is included in between.

  Hereinafter, embodiments of the present disclosure will be described with reference to the drawings and the like. However, the present disclosure can be implemented in many different aspects, and is not construed as being limited to the description of the embodiment exemplified below. In addition, the drawings may be schematically represented as to the width, thickness, shape, etc. of each portion in comparison with the embodiment in order to clarify the description, but this is merely an example, and the interpretation of the present disclosure is not limited. It is not limited. In the specification and the drawings, the same elements as those described above with reference to the drawings already described may be denoted by the same reference numerals, and the detailed description may be appropriately omitted. Moreover, although it may be demonstrated using the words "upper" or "lower" for convenience of explanation, the vertical direction may be reversed.

  Hereinafter, the information communication device, the display unit, and the laminate of the present disclosure will be described in detail. In the present specification, the terms "sheet", "film", and "plate" are not distinguished from one another based only on the difference in designation. Thus, for example, "sheet" is a concept that also includes members that may be called films or plates.

A. Information Communication Device The information communication device of the present disclosure has a display unit for displaying an image and a light source for emitting light from the back of the display unit, and transmits information using the light emitted from the light source as signal light. The signal light transmitted from the transmission unit is received by the portable terminal via the display unit, the display unit sequentially from the side facing the transmission unit A light diffusion plate, a light control layer, and a print layer are stacked, and the print layer has a light transmitting property to transmit light incident on the display unit, and the light control layer has a plurality of light extend in any direction. A light transmitting portion which is made of a transparent resin and transmits incident light, and a light absorbing portion which is made of a light absorbing material disposed in the groove and which absorbs light, The light diffusion plate is light reflective for reflecting light transmitted through the light transmission portion of the light control layer. Is an apparatus having

An information communication apparatus of the present disclosure will be described using the drawings. FIG. 1 and FIGS. 2A and 2B are explanatory diagrams for explaining the information communication apparatus of the present disclosure. As shown in FIG. 1 and FIGS. 2A and 2B, the information communication apparatus 100 of the present disclosure uses the display unit 10 for displaying an image and light from the back of the display unit 10 as signal light h _y for information. And a transmitting unit 20 for transmitting. As shown in FIG. 1 and FIG. 2B, the signal light h _y transmitted from the transmission unit 20 is received by the portable terminal 200 via the display unit 10.

As shown in FIGS. 2A and 2B, the display unit 10 has a configuration in which the light diffusion plate 3, the light control layer 2, and the printing layer 1 are sequentially stacked from the side facing the transmission unit 20. At this time, the print layer 1 has light transmissivity for transmitting the light h _x incident on the display unit 10, and the light control layer 2 has a light transmission portion for transmitting the incident light and light for absorbing the incident light. It has an absorption part, and further, the light diffusion plate 3 has light reflectivity for reflecting the light transmitted through the light transmission part of the light control layer 2. Therefore, as shown in FIG. 2A, the light h _x incident on the display unit 10 is transmitted through the printing layer 1, and a part of the transmitted light is transmitted through the light transmission portion of the light control layer 2 The light is incident on the diffusion plate 3. The light incident on the light diffusion plate 3 is reflected by the light diffusion plate 3 and emitted from the surface of the display unit 10 on the printing layer 1 side. Thus, the user may visually recognize the image displayed by the display unit 10 in the present disclosure by emitting the light h _x incident on the display unit 10 from the surface on the printing layer 1 side of the display unit. It becomes possible.

Fig.3 (a) is a schematic sectional drawing which shows an example of the light control layer in this indication, FIG.3 (b) is explanatory drawing for demonstrating the light control layer in this indication. As shown in FIG. 3A, the light control layer 2 has a plurality of grooves 24 extending in an arbitrary direction, is made of a transparent resin, and transmits light incident thereon; And a light absorbing portion 22 configured to absorb light and made of a light absorbing material. 3 (a) is, with respect to the optical control layer 2, an example in which light h _x is incident in the direction of the arrow.

As described above, in the case where the conventional information communication apparatus is used outdoors where the sunlight is strong, for example, in an environment where the illuminance of external light is high, it is difficult for the portable terminal to receive the information transmitted from the information communication apparatus. There is a problem that It is presumed that the signal light transmitted from the transmission unit of the information communication apparatus is difficult to read because the contrast ratio (SN ratio) is lowered in an environment where the illuminance of the external light is high. In addition, this is considered to be clear by the reference example and comparative example which are mentioned later.
On the other hand, according to the present disclosure, by providing the light control layer in the display unit, it is possible to control the light amount of the external light. For example, as shown in FIG. 1 of the information communication device of the present disclosure, when external light h _x is incident on the information communication device 100 from the upper side, the arrow shown in FIG. Light h _x can be incident in the direction. Therefore, part of the external light h _x incident on the light control layer 2 may be absorbed by the light absorbing portion 22 in the light control layer 2, it is possible to control the amount of external light h _x. On the other hand, for example, as shown in FIG. 2B, a light emitting diode (LED) having relatively high directivity is generally used as a light source for the signal light h _y transmitted from the transmission unit 20. Therefore, even when the light control layer 2 is provided in the display unit 10, the signal light h _y incident in the vertical direction with respect to the surface of the light control layer 2 can be emitted while securing the light amount. . As a result, it is possible to suppress a decrease in the contrast ratio, and it is possible to favorably receive information transmitted from the information communication apparatus, that is, signal light transmitted from the transmitter by the portable terminal.

1. Display Unit The display unit in the present disclosure is a member that displays an image. Further, in the display unit, the light diffusion plate, the light control layer, and the print layer are stacked in order from the side facing the transmission unit.

  Hereinafter, the display unit will be described separately for each member.

(1) Light Control Layer The light control layer in the present disclosure has a plurality of grooves extending in an arbitrary direction, is made of a transparent resin, and is disposed in the light transmission part transmitting light incident thereon, and in the grooves. It is a layer having a light absorbing portion made of a light absorbing material and absorbing light. That is, as shown in FIG. 2A, when external light h _x enters the display unit 10, the light control layer transmits part of the light transmitted through the printing layer 1 from the light transmission unit, Light is absorbed by the light absorbing portion. Further, the light control layer 2 can transmit the light reflected by the light diffusion plate 3 described later by the light transmitting portion of the light control layer 2. Further, as shown in FIG. 2B, the light control layer can transmit the signal light h _y transmitted from the transmission unit 20.
Hereinafter, the light transmitting portion and the light absorbing portion will be respectively described.

(A) Light Transmission Portion The light transmission portion in the present disclosure is a member which has a plurality of groove portions extending in an arbitrary direction, is made of a transparent resin, and transmits incident light.

  Here, “a plurality of groove portions extending in any direction” means, for example, as shown in FIG. 4, the opening shape of the groove portion 24 is a line shape, and a plurality of the groove portions 24 are formed. The opening shape of the groove portion is, for example, a shape surrounded by a broken line indicated by reference numeral 24 a in FIG. 4. Examples of the specific opening shape of the groove portion include, for example, a linear shape, a curved shape, and the like, and among them, the linear shape is preferable. In addition, when viewed from the side opposite to the light-entering surface of the light transmitting portion, the opening shapes of the plurality of grooves may be parallel, random, or intersecting, respectively. Among them, parallel is preferred.

  The length of the groove can be appropriately adjusted according to the application and the installation place of the information communication device of the present disclosure, and is not particularly limited. In addition, the length of a groove part means the distance of the extending | stretching direction of the groove part 24 shown by code | symbol L of FIG. 4, for example.

  For example, when the light transmitting portion is viewed in plan from the side opposite to the light incident surface as shown in FIG. 4, the ratio of the area of the opening region of the groove in the entire area of the light transmitting portion is, for example, 50% The above may be 70% or more, or 80% or more. Moreover, the ratio of the area of the opening area of the groove in the entire area of the light transmission part is, for example, 99% or less. When the ratio of the area of the opening area of the groove in the entire area of the light transmitting portion has the above lower limit, a desired light control function can be provided to the light control layer using the light transmitting portion. In addition, when the ratio of the area of the opening area of the groove to the entire area of the light transmitting portion has the above-described upper limit, the light absorbing portion formed in the groove reduces the visibility of the image to be displayed by the display. It is possible to suppress the occurrence of a defect. In addition, this effect becomes remarkable when using a black pigment as a material of a light absorption part.

The cross-sectional shape in the direction orthogonal to the extending direction of the groove, that is, the shape 24b of the groove 24 when observed from the cross section along line AA of the light transmitting portion 21 shown in FIG. It can adjust suitably according to the advancing direction of and is not specifically limited. As a cross-sectional shape of the direction orthogonal to the extending | stretching direction of a groove part, as shown to Fig.5 (a), triangle shape, a rectangular shape, and trapezoid shape are mentioned, for example. Moreover, as the said cross-sectional shape of a groove part, as shown, for example in FIG.5 (b), each corner | angular part may have a curvature. In the present disclosure, the cross-sectional shape of the groove is preferably trapezoidal. In the present disclosure, as shown in FIG. 5C, when the cross-sectional shape of the groove 24 is trapezoidal, the trapezoidal leg may be convex, as shown in FIG. 5D. Thus, the trapezoidal legs may be concave. Moreover, as shown to FIG.5 (c), (d), when a trapezoidal leg is concave or convex, the said leg may be a curve. Further, in the present disclosure, although not shown, one of the trapezoidal legs may be concave or convex, and the other may be linear. The trapezoidal leg portion corresponds to a trapezoidal side surface, and refers to, for example, the sides indicated by reference numerals 24k ₁ and 24k ₂ in FIG. 5A.

In the present disclosure, as shown in FIG. 5C, it is preferable that the cross-sectional shape of the groove 24 be trapezoidal, and the trapezoidal leg be convex. As shown in FIG. 6A, the light absorbing portion is disposed in a plan view of the light control layer, as compared to the case where the groove 24 has a trapezoidal sectional shape and the trapezoidal leg has a linear shape. The area of the groove 24 can be reduced, and the distance S between adjacent grooves can be increased. Therefore, when the user who uses the information communication device of the present disclosure observes the display unit, it is possible to suppress the decrease in the visibility of the display unit by the light absorbing unit of the light control layer. In addition, such an effect becomes remarkable when the light absorptive material which comprises a light absorption part is a black coloring material which shows the color of a blackish color. Further, in the present disclosure, as shown in FIG. 5D, it is preferable that the cross-sectional shape of the groove 24 be trapezoidal, and the trapezoidal leg be concave. As shown in FIG. 6 (b), the signal light h _y transmitted from the transmitter of the information communication apparatus compared to the case where the cross section of the groove 24 has a trapezoidal shape and the trapezoidal leg has a linear shape. Can be emitted more often. Therefore, the information transmitted from the information communication apparatus of the present disclosure can be favorably acquired using the portable terminal.

  The light transmitting portion in the present disclosure has a plurality of grooves. At this time, the plurality of grooves may have the same cross-sectional shape as described above, and may be different as shown in FIG. 7, for example. Among them, in the present disclosure, the above-described cross-sectional shapes of the plurality of grooves are preferably different, and in particular, it is preferable that the cross-sectional shapes of adjacent grooves 24 be different as shown in FIG. When light is reflected at the interface between the groove portion and the light absorbing portion, if the shape of the groove portion is the same, color dispersion occurs due to wavelength dispersion due to light reflection, and the color tone of the image to be displayed by the display portion Although there is a possibility that the influence may be given, it is possible to suppress the color bias due to the wavelength dispersion as described above and to suppress the decrease in the visibility of the image displayed by the display unit by changing the shape of the groove. . In addition, about the code | symbol in FIG. 7, since it can be made to be the same as that of FIG.3 (b) and FIG. 4, description here is abbreviate | omitted.

The depth of the groove in the present disclosure can be appropriately adjusted in accordance with the application and the installation location of the information communication device of the present disclosure. The depth of the groove is preferably such a degree that the light incident on the light control layer can be controlled by forming the light absorbing portion in the groove, and is, for example, 10 μm or more and 40 μm or more. It is also good. Further, the depth of the groove portion is, for example, 500 μm or less, may be 200 μm or less, and may be 150 μm or less. At this time, the depth of the groove is, for example, 4% or more, 10% or more, or 20% or more with respect to the thickness of the light control layer. The depth of the groove may be, for example, 97% or less, 70% or less, or 60% or less of the thickness of the light control layer. Note that the depth of the groove, refers to the maximum distance from the surface of the light control layer to the bottom surface of the groove is a distance indicated in Figure 3 reference numeral T ₂₄ (b), for example. The thickness of the light control layer is a distance indicated by reference numeral T ₂₁ in FIG. 3 (b).

  In the present disclosure, when the plurality of grooves formed in the light transmitting portion extend in one direction, the distance between the grooves may be the same or may be different depending on the area of the display portion. In the present disclosure, for example, as shown in FIG. 8, in the position corresponding to the central portion of the display unit, the distance between adjacent groove portions is large, and at the position corresponding to the end portion of the display unit, the adjacent groove portions The distance between them can be reduced. As shown in FIG. 8, when the distance between the groove parts differs according to the area of the display part, for example, the display part can be increased by increasing the distance between the adjacent groove parts in the area where the line of sight of the user A is. It is possible to suppress such a defect that the visibility of the image displayed by the light control portion 2 is lowered by the light absorption portion 22. FIG. 8 is a schematic plan view showing the light control layer 2 corresponding to the area surrounded by the broken line R in FIG. The other reference numerals shown in FIG. 8 can be the same as those shown in FIGS. 3 (a) and 3 (b), and the description thereof will be omitted.

  The specific distance between the groove portions can be appropriately adjusted according to the light control function to be provided to the light control layer in the present disclosure, and is not particularly limited. The distance between the grooves is, for example, 10 μm or more, preferably 20 μm or more, and particularly preferably 30 μm or more. In addition, the distance between the groove portions is, for example, 300 μm or less, preferably 200 μm or less, and particularly preferably 180 μm or less. When the distance between the adjacent groove portions is within the above range, the light control layer can be provided with a desired light control function while securing the visibility of the image to be displayed by the display unit. In addition, the distance between adjacent groove parts means the distance shown by code | symbol S of Fig.6 (a), for example.

  The direction in which the groove extends can be appropriately selected according to the application, size, and the like of the information communication device of the present disclosure, and is not particularly limited. For example, as shown in FIG. 8, the groove in the light transmitting portion 21 may extend in the lateral direction to the user A of the information communication apparatus, but may extend in the longitudinal direction although not shown. And may extend in an oblique direction. When the information communication apparatus in the present disclosure has a large area, it is preferable to determine the extending direction of the groove in consideration of the viewing angle characteristics by the user.

For example, as shown in FIG. 3 (a), the groove in the light transmitting portion may be formed on the side opposite to the light incident surface of the light h _x incident on the information communication device of the present disclosure. It may be formed on the incident surface side of h _x . Incidentally, as shown in FIG. 3 (a), when the cross-sectional shape of the groove is trapezoidal, preferably the grooves on the opposite side of the formed light incidence surface h _x. In view of manufacturing problems when forming the groove, the surface on which the groove of the light transmitting portion is formed is usually the lower bottom of the trapezoidal shape. Therefore, since it is possible to trapezoidal upper bottom side of the groove and the incident surface of the light h _x. The trapezoidal upper bottom side of the groove by the entrance surface side of the light h _x, it is possible to obtain better light control function. Further, the light and h _x entrance surface of that groove portion on the opposite side of the formed, the user of the information communication apparatus of the present disclosure may be an opening side of the opposite surface side groove. Therefore, when a user observes the image which a display part displays, generation | occurrence | production of the malfunction that the visibility of an image falls can be suppressed by the light absorption part formed in a groove part. In addition, this effect becomes remarkable when using a black pigment as a light absorption part.

  The light transmitting portion preferably has a desired light transmitting property. Specifically, the light transmitting property is such that the light transmitted through the printing layer can be transmitted through the light control layer, and the signal light transmitted from the transmitting unit can be transmitted. preferable. For example, the total light transmittance of the light transmitting portion is, for example, 30% or more, preferably 50% or more, and particularly preferably 60% or more. In addition, a total light transmittance is a value measured using Suga Test Instruments Co., Ltd. full automatic direct reading haze computer (HGM-2DP).

  The light transmitting portion contains a transparent resin. The transparent resin used for the light transmitting portion preferably has a desired light transmitting property, and is preferably a transparent resin which can obtain the light transmitting property as described above. As such a transparent resin, a thermosetting resin, ionizing radiation curable resin, etc. are mentioned, for example. Among them, ionizing radiation curable resins are preferable from the viewpoint of curability.

  As the thermosetting resin, for example, epoxy resin, phenol resin, urea resin, unsaturated polyester resin, melamine resin, alkyd resin, polyimide resin, silicone resin, hydroxyl functional acrylic resin, carboxyl functional acrylic resin, amide functional co-functional A polymer, a urethane resin, etc. are mentioned. The crosslinking and curing mode of these thermosetting resins is not particularly limited, and crosslinking and curing are carried out using a commonly used crosslinking agent and curing agent.

Further, as the ionizing radiation curable resin, an ultraviolet curable resin, an electron beam curable resin, a visible light curable resin, a near infrared curable resin, etc. may be mentioned. Among them, the viewpoints of versatility, curing and light transmittance UV curable resins and electron beam curable resins are preferred.
The UV curable resin and the electron beam curable resin can be appropriately selected and used from conventionally used polymerizable oligomers and prepolymers. For example, polymerizable oligomers or prepolymers, in particular, multifunctional polymerizable oligomers or prepolymers, may be mentioned.

  When using an ionizing radiation curable resin as the transparent resin, it is preferable that a photopolymerization initiator be contained. As said photoinitiator, it can select suitably according to the kind of ionizing radiation, For example, photoinitiators, such as a ketone system and an acetophenone system, can be used. The content of the photopolymerization initiator is preferably about 0.1 parts by mass to 10 parts by mass with respect to 100 parts by mass of the ionizing radiation curable resin.

  In addition to the transparent resin described above, the light transmitting portion contains an ultraviolet light absorber, a weather resistance improving agent such as a light stabilizer, an antioxidant, a crosslinking agent, a hard coating agent, a scratch resistant filler, a polymerization inhibitor, an antistatic agent, and a leveling agent. You may contain additives, such as a thixotropic agent, a coupling agent, a plasticizer, an antifoamer, and a filler.

The thickness of the light transmission part can be appropriately adjusted according to the size of the information communication device of the present disclosure and the light control function to be applied to the light control layer. The thickness of the light transmitting portion is, for example, 10 μm or more, and may be 40 μm or more. Further, the thickness of the light transmitting portion is, for example, 600 μm or less, and may be 300 μm or less, or may be 200 μm or less. The thickness of the light transmitting unit is a distance indicated by reference numeral T ₂₁ in FIG. 3 (b).

  The method of forming the light transmitting portion is not particularly limited as long as it is a method capable of forming a light transmitting portion having a desired groove portion. For example, a coating liquid containing a material that constitutes the light transmission part is applied onto a substrate to be described later to form a coating film, and a mold having projections of the same shape as the groove shape is pressed against the coating film. According to the material of a coating film, the method of forming by making it harden is mentioned.

  In the light control layer in the present disclosure, it is preferable that the light transmitting portion be stacked in direct contact with the printing layer. That is, it is preferable that the light control layer be disposed in close contact with the print layer. This is because as the distance between the light control layer and the print layer increases, the amount of signal light transmitted through the display tends to decrease. As described above, when the light transmitting portion is laminated in direct contact with the printing layer, the light transmitting portion can be directly formed on the printing layer, not on the substrate to be described later. Therefore, in this case, the light control layer can be configured to have no substrate.

(B) Light Absorbing Portion The light absorbing portion in the present disclosure is a member configured to absorb light and configured of a light absorbing material disposed in the above-described groove portion.

The light absorption part should just be a member comprised with the light absorptive material which can absorb the light which injected. Here, “incident light” refers to external light incident on the information communication device of the present disclosure, and, for example, when the information communication device 100 is used outdoors as shown in FIG. It corresponds to the light h _x ). In addition, the "light absorbing material" refers to a material having a light absorbing property capable of absorbing the above-mentioned "incident light", and, among these, a degree to which the light absorbing portion can exhibit a desired light absorbing performance. It is preferable that it is a material which has the light absorbency of. The specific light absorption performance of the light absorption portion will be described later.

  The light absorbing portion preferably has excellent light absorbing performance, and preferably has a desired light absorptivity. The light absorptivity of the light absorbing portion varies depending on the type of incident light, the material of the light absorbing portion, etc. For example, the visible light absorptivity is 50% or more, preferably 70% or more, In particular, 85% or more is preferable. The light absorptivity of the light absorbing portion can be measured by an ultraviolet visible near infrared spectrophotometer (V-670DS) manufactured by JASCO Corporation.

  The light absorbing portion preferably has a refractive index close to that of the light transmitting portion. The refractive index difference between the light absorbing portion and the light transmitting portion is, for example, preferably 0.05 or less, and more preferably 0.01 or less. By reducing the difference in refractive index between the light absorbing portion and the light transmitting portion, it is possible to suppress the occurrence of diffraction unevenness at the interface between the light absorbing portion and the light transmitting portion. As a result, when the printed layer is observed, it is possible to suppress a defect that unevenness appears and to make the appearance look good.

  The light absorbing material constituting the light absorbing portion is preferably a light absorbing material, and examples thereof include a light absorbing material having light absorbing properties such as carbon black, and a resin containing a light absorbing material. . The light absorbing portion in the present disclosure preferably contains a black coloring material exhibiting a black-based color from the viewpoint of high light absorbing performance.

  Here, the above-mentioned "black color" means, for example, bluish black, greenish black, reddish black, brownish black, orangeish black, or the like in addition to black without color. It may be a color such as blackish white. Thus, "black color" refers to pure black (pure black), transparent black, reddish black, yellowish black, bluish black, greenish black, violet Chromatic blackish colors and achromatic colors such as black, brownish black, white black (dark gray), very dark red, very dark yellow, very dark blue, very dark green, very dark purple, very dark brown, etc. Also includes dark color. These black-based colors can be defined numerically using various color systems. Above all, if it is indicated by the Munsell color system (JIS Z 8721) which is one kind of conventional color system, the "black color" in the present disclosure means the brightness depending on the hue in the Munsell color system. Can be defined as a color of 3.0 or less. The hue of the black-based color is not particularly limited, and the saturation can be arbitrarily determined as required.

  Further, the light absorbing material in the present disclosure can be, for example, a coloring material that exhibits a chromatic color such as blue or red depending on the application of the information communication device. In this case, a light absorbing portion having a predetermined color tone can be provided, and a light control layer having a predetermined color tone can be provided as a whole. In addition, since a well-known material can be generally used about the said coloring material, description here is abbreviate | omitted. The light absorbing material can also be determined in accordance with the wavelength of the signal light transmitted from the transmission unit.

  Examples of the light absorbing material having light absorbing properties include particulate materials having a function of absorbing light in the visible light range. Specific examples thereof include metal salts such as carbon black, graphite and black iron oxide, pigments and dyes, and resin particles colored with pigments and dyes. When resin particles colored with pigment or dye are used as the light absorbing material, examples of the resin particles include acrylic resin, polycarbonate resin, polyethylene resin, polystyrene resin, methyl methacrylate / bradiene / styrene resin, methyl methacrylate / styrene What was formed with resin etc. can be used. Further, as the light absorbing material, for example, carbon black or the like and the above-described colored resin particles can be used in combination.

  Examples of the resin containing a light absorbing material include ultraviolet curable resins such as urethane acrylate and epoxy acrylate, and ionizing radiation curable resins such as electron beam curable resins.

  In the present disclosure, an infrared transmitting material that transmits near infrared light can also be used as the light absorbing material. Specifically, an infrared transmitting colored pigment that transmits near infrared light can be mentioned. Examples of infrared transmissive colored pigments include oxazine pigments that are purple pigments, phthalocyanine pigments that are brown pigments, benzimidazolone pigments that are brown pigments, yellow pigments isoindolinone pigments, and red pigments. Examples include quinacridone pigments that are based pigments. In addition, as brown pigments, 4-[(2,5-dichlorophenyl) azo] -3-hydroxy-N- (2,5-dimethoxyphenyl) -2-naphthalenecarboxamide, 1-[(4- Nitrophenyl) azo] -2-naphthalenol, bis [3-hydroxy-4- (phenylazo) -2-naphthalenecarboxylic acid] copper salt, C.I. I. Pigment Brown 7, N, N'-bis (2,4-dinitrophenyl) -3,3'-dimethoxy-1,1'-biphenyl-4,4'-diamine, 3,4,9,10-perylenetetracarboxylic acid Diimide, Δ2,2 ′ (1H, 1′H) -binaphtho [2,1-b] thiophene-1,1′-dione and N, N ′-(10,15,16,17-tetrahydro-5,10 (15,17-tetraoxo) -5H-dinaphtho [2,3-a: 2'3'-i] carbazole-4,9-diyl) bis (benzamide) and the like can also be used. These pigments may be used alone or in combination as appropriate. By using an infrared transmissive material for the light absorbing portion, the heat absorption of the material can be suppressed, so that the thermal deterioration of the light control layer and the adjacent member can be suppressed.

In the present disclosure, the light absorbing portion may have a two-layer configuration. For example, as shown in FIG. 10, the surface opposite the light absorbing portion 22 includes a first light absorbing portion 22a of the side where light h _x is incident on the display unit, a surface light h _x is incident on the display unit You may have the 2nd light absorption part 22b of the side. At this time, it is preferable that the first light absorbing material constituting the first light absorbing portion 22a be a material having a color tone that does not adversely affect the visibility of the image displayed by the display portion, for example, a white color It is preferred to select a material that exhibits the color of the system. In the present disclosure, by selecting a material exhibiting a white-based color as the first light-absorbing material, the display unit is compared to the case where a material exhibiting a black-based color is selected as the first light-absorbing material. It is possible to suppress the decrease in the visibility of the image displayed by the image. Here, “white color” means ivory, beige, reddish white (light pink), yellowish white, bluish white, greenish in addition to pure white (pure white) White, purplish white, brownish white, blackish gray (light gray), silvery white, light color exhibiting white with a chromatic color such as golden white, and a color exhibiting an achromatic white It can be mentioned. Examples of the material exhibiting such a white-based color include resin particles colored with a white pigment. Examples of the white pigment include titanium oxide (rutile type, anatase type), zinc oxide, zinc sulfide, lithopone, calcium carbonate, barium sulfate, silica, kaolin, clay and the like. Further, as the second light absorbing material constituting the second light absorbing portion 22b, it is preferable to select a material excellent in light absorptivity, and to select a material different from the first light absorbing material described above. Can. As the second light absorbing material, for example, it is preferable to select a material exhibiting a black-based color. The second light absorbing portion is disposed on the light control layer on the side opposite to the side viewed by the user who uses the information communication device than the first light absorbing portion. Therefore, even when a material exhibiting a black-based color is selected as the second light-absorbing material, it is possible to suppress an adverse effect on the visibility of the image displayed by the display unit. In addition, even in the case of using a material exhibiting a white-based color as the first light absorbing material, it is possible to ensure the desired light absorbing performance as the light absorbing portion.

  The light absorbing portion is a member made of a light absorbing material disposed in the groove of the light transmitting portion. Therefore, the shape of the light absorbing portion is usually the same as the shape of the groove portion of the light transmitting portion described above. In addition, about the groove part of a light transmissive part, since it can be made to be the same as the content regarding the groove part described in the term of said "(a) light transmissive part", description here is abbreviate | omitted.

  The method of forming the light absorbing portion is not particularly limited as long as the light absorbing material can be disposed in the groove portion. For example, a method of filling a composition containing a light absorbing material in the groove and curing depending on the material may be mentioned.

(C) Base Material In the present disclosure, for example, as shown in FIG. 3A, the base material 23 may be provided on the side opposite to the side on which the groove of the light transmitting portion 21 is formed. . When the light control layer in the present disclosure has a substrate, a light transmitting portion, and a light absorbing portion in this order, the light transmitting portion is formed on the substrate using a coating method.

  It is preferable that the material used for a base material has desired light transmittance. Examples of the material of such a substrate include polyethylene terephthalate, polycarbonate, polyester, polyurethane, polyvinyl alcohol, polycarbonate, vinyl chloride, fluorocarbon resin, rubber and the like.

  The thickness of the substrate is preferably such that it can support the light transmitting portion and the light absorbing portion, for example, preferably 5 μm to 200 μm, and more preferably 10 μm to 150 μm. .

(D) Others In the present disclosure, the plurality of light control layers described above may be tiled. At this time, the extending directions of the groove portions of the light transmitting portion in each light control layer to be tiled may be different from each other. Specifically, as shown in FIG. 9, for example, the groove of the light transmission part in one light control layer 2a extends in one direction (lateral direction), and the groove of the light transmission part in the other light control layer 2b May extend in a direction (longitudinal direction) orthogonal to the one direction, and may be alternately arranged. Although FIG. 9 shows an example in which two regions in which the extending directions of the groove portions differ by 90 degrees are alternately arranged, the extending directions of the groove portions may be different any number of times, and the light control layer to be tiled The number of is also not particularly limited. Therefore, for example, as shown in FIG. 8, when the width of the groove of the light transmitting portion is gradually changed, a plurality of light control layers having different widths of the groove of the light transmitting portion are used as the light transmitting portion. The width of the groove may be tiled so as to change continuously.

  In addition, the light control layer in the present disclosure may be disposed on the entire surface of the display unit in plan view, or may be partially disposed on a part of the display unit. For example, the light control layer may have a predetermined opening. In this case, the opening of the light control layer is preferably a region that transmits signal light transmitted from the transmission unit. This is because it is possible to favorably receive the signal light by the portable terminal.

(2) Light Diffusing Plate The light diffusing plate in the present disclosure is a member having light reflectivity that reflects light transmitted through the light transmitting portion of the light control layer. That is, as shown in FIG. 2A, the light diffusion plate has light reflectivity that reflects the light transmitted through the print layer 1 and the light control layer 2 when the external light h _x is incident on the display unit 10 . Further, as shown in FIG. 2B, the light diffusion plate can transmit the signal light h _y transmitted from the transmission unit 20. The light diffusing plate has a light diffusing property for diffusing the signal light h _y transmitted from the transmission unit. As described above, the light diffusion plate in the present disclosure is a semitransparent member provided with light reflectivity for reflecting external light and light transparency for transmitting signal light.

  It is preferable that the light diffusion plate having translucency have predetermined light reflectivity and light transparency. Specifically, it is preferable that the light diffusion plate has light reflectivity to such an extent that it can reflect light transmitted through the light control layer. For example, the visible light reflectance of the light diffusion plate may be 10% or more, and may be 30% or more. Also, for example, the visible light reflectance of the light diffusion plate may be 90% or less and 80% or less. The visible light reflectance of the light diffusing plate can be measured by an ultraviolet visible near infrared spectrophotometer (V-670DS) manufactured by JASCO Corporation. Moreover, it is preferable that the light diffusion plate has a light transmittance to such an extent that the signal light transmitted from the transmission unit can be transmitted. For example, the visible light transmittance of the light diffusing plate may be 10% or more, and may be 20% or more. Also, for example, the visible light transmittance of the light diffusing plate may be 90% or less and 70% or less. The visible light transmittance of the light diffusing plate can be measured by an ultraviolet visible near infrared spectrophotometer (V-670DS) manufactured by JASCO Corporation.

  In the present disclosure, the light diffusion plate, the light control layer, and the print layer are stacked in order from the side facing the transmission unit. That is, the light diffusion plate is disposed on the side opposite to the side on which the printing layer of the light control layer is disposed. At this time, the light diffusion plate may be in direct contact with the light control layer, or may have a predetermined distance between the light diffusion plate and the light control layer. In the present disclosure, it is preferable that the light diffusion plate be in direct contact with the light control layer. As the distance between the light diffusion plate and the light control layer increases, the signal light emitted from the transmission unit and diffused by the light diffusion plate spreads before reaching the light control layer, and the light control layer This is because there is a possibility that the rate at which the signal light is absorbed by the light absorbing portion may increase.

  As a material used for a light diffusing plate, it is preferable that it is a material which can comprise the light diffusing plate which has the function mentioned above. Examples thereof include resin materials exhibiting a translucent milky white color, resin materials in which particles are dispersed, and the like, and the materials described in JP-A-8-272325 and Utility Model Registration No. 3103449 may be used. it can.

  The light diffusion plate may have a patterned opening. Even when the illuminance of external light entering the information communication device of the present disclosure is high, the opening of the light diffusion plate can reduce external light reflection. Therefore, the light amount of the reflected light emitted from the back of the display unit can be controlled, and the signal light transmitted from the transmission unit can be favorably received. In addition, since signal light can be transmitted from the opening of the light diffusion plate, reception of signal light by the portable terminal can be favorably performed.

  The thickness of the light diffusion plate is preferably such a thickness that can exhibit the above-mentioned semi-transmission, and may be, for example, 0.1 mm or more, and may be 1 mm or more. Further, the thickness of the light diffusion plate is, for example, 10 mm or less, and may be 5 mm or less.

  As a formation method of a light-diffusion layer, it is preferable that it is a method which can be formed in the surface on the opposite side to the printing layer of a desired light control layer, for example. Specifically, the method of apply | coating the coating liquid containing the material which comprises a light-diffusion layer on one side of a light control layer is mentioned. For the coating method, conventionally known methods can be used. Moreover, as a formation method of a light-diffusion layer, the method of sticking a film-form light-diffusion layer on the surface on the opposite side to the printing layer of a light control layer is mentioned.

(3) Printed Layer The printed layer in the present disclosure has light transmissivity to transmit light incident on the display unit. That is, as shown in FIG. 2A, the print layer can transmit external light h _x incident on the display body 10. Also, as shown in FIG. 2B, the signal light h _y transmitted from the transmission unit 20 can be transmitted. The printing layer is a layer on which an image to be displayed by the display unit is drawn, and when the information communication device of the present disclosure is used in a bright environment such as daytime, external light such as sunlight is a light diffusion plate The reflected light reflected by the light source enables the user to view the image by illuminating the print layer from the back. On the other hand, when the information communication device of the present disclosure is used in a dark environment such as night, the print layer is illuminated from the back by irradiating light from the back of the display unit with a backlight or the like, and the user It becomes possible to visually recognize.

  The print layer is a layer on which a predetermined image is drawn. As a material used for drawing an image, it is a material which can be used for the printing method, and it is preferable that it is a material which has light transmittance. As such a material, an inorganic pigment, an organic pigment, etc. are mentioned, for example. Examples of the inorganic pigment include iron ferrocyanide, iron oxide, cadmium pigments, titanium oxide, alumina, calcium carbonate, barium sulfate and the like. In addition, as the organic pigment, for example, insoluble azo pigment pigment, azo lake pigment, stalocyanine pigment, chelate pigment, nitro pigment, geoindigo pigment, anthraquinone pigment, perylene pigment, quinacridone pigment, sulene As a system pigment and a dioxazine system pigment, a condensation type azo system pigment etc. are mentioned. In addition, you may mix and use 2 or more types of these pigments as needed. Moreover, additives, such as a filler, a plasticizer, a dispersing agent, a lubricant, an antistatic agent, an antioxidant, and a mildew-proof agent, can be suitably used for the said material as needed.

  The print layer can be obtained, for example, by printing the above-described material on a transparent substrate. In addition, about a transparent base material used for a printing layer, since a generally well-known material can be used and it does not specifically limit, description here is abbreviate | omitted.

  The thickness of the print layer can be appropriately adjusted in accordance with the image drawn on the print layer, the use of the information communication device, the size, and the like.

  The method of forming the printing layer is preferably a method capable of forming a printing layer on which a desired image is drawn, and for example, a method of drawing an arbitrary image by a printing method using the above-described material is mentioned. Be In addition, since a generally well-known method can be employ | adopted as a specific printing method, description here is abbreviate | omitted.

(4) Others The display unit in the present disclosure may have at least the light control layer, the light diffusion plate, and the print layer described above, but may have other layers as needed. As another layer, an optical function layer, a low reflective layer, an adhesion layer etc. are mentioned, for example.

(A) Optical Function Layer The display unit in the present disclosure has an optical function layer provided with a light collecting function for collecting the signal light transmitted from the transmission unit between the light diffusion plate and the light control layer. It is also good. Such an optical function layer is not particularly limited as long as it is a member having a light collecting function for collecting signal light. As a specific optical function layer, for example, a layer having a unit prism, a layer having a Fresnel lens, etc. may be mentioned. In the present specification, an optical functional layer having a unit prism will be described below as an example of the optical functional layer.

  The optical functional layer in the present disclosure may have an optical functional layer 4 between the light diffusion plate 3 and the light control layer 2 as shown in FIG. 11, for example. In addition, since the code | symbol which is not demonstrated in FIG. 11 can be made to be the same as that of other FIG. 2 (b) mentioned above, the description here is abbreviate | omitted. In the present disclosure, by including the optical function layer as another member, it is possible to condense signal light transmitted from the transmission unit, and to enable better reception of signal light.

  The optical functional layer in the present disclosure is a layer having a desired light collecting function. Such an optical functional layer is preferably, for example, a layer having a unit prism. Specifically, as shown in FIG. 12, it is preferable that it is the optical functional layer 4 in which a plurality of unit prisms 41 are arranged. Further, the arrangement direction X of the unit prisms 41 is perpendicular to the light guide direction Y. Further, it is preferable that the plurality of unit prisms 41 be arranged without gaps in the direction X perpendicular to the light guiding direction Y, and each unit prism 41 extends linearly along the light guiding direction Y. Is preferred. Furthermore, each unit prism 41 is preferably formed in a columnar shape, and preferably has the same cross-sectional shape along its longitudinal direction. The optical functional layer 4 shown in FIG. 12 is an example of a configuration having a plurality of unit prisms 41 and a main body 42.

  FIG. 13 is a cross-sectional view taken along the line B-B in FIG. As shown in FIG. 13, the cross-sectional shape 41 a of each unit prism 41 in the optical function layer 4 is a shape that protrudes to the emission surface side of the signal light transmitted from the transmission unit, that is, the user side of the information communication device of the present disclosure. It can be done. Here, the protrusion height of the cross-sectional shape of the unit prism is H, and the width of the bottom is W. FIG. 13 shows an example in which the cross-sectional shape of the unit prism 41 is triangular.

In the present disclosure, for example, as shown in FIG. 13, when the normal N to the bottom surface of the unit prism 41 is drawn, the signal light h _y incident on the optical function layer 4 is directed to the normal N side of the traveling direction of light. It can be narrowed down. That is, the light collecting effect can be exerted on the signal light h _y incident on the optical function layer 4.

The optical functional layer in the present disclosure may be a single layer, or two or more layers may be stacked. In the present disclosure, for example, as shown in FIG. 14, two layers are preferably stacked. When two or more optical functional layers are laminated, as shown in FIG. 14, it is preferable that the stretching directions of the unit prisms 41 formed in a columnar shape are different from each other. Among them, as shown in FIG. 14, it is preferable that the extension direction of the unit prism 41 in one optical function layer 4a and the extension direction of the unit prism 41 in the other optical function layer 4b are orthogonal to each other. The condensing action of the signal light h _y by the optical function layer can be made effective.

  The cross-sectional shape of the unit prism can be a shape that protrudes to the emission surface side of the signal light transmitted from the transmission unit, that is, the user side of the information communication device of the present disclosure. Here, the cross-sectional shape of the unit prism refers to, for example, the shape of the area surrounded by the broken line 41 a in FIG. 13. Specific cross-sectional shapes of the unit prisms include, for example, various polygonal shapes such as triangular shapes, quadrangular shapes such as trapezoidal shapes, pentagonal shapes, and hexagonal shapes. Also, the cross-sectional shape of the unit prism may be a shape corresponding to a part of a circular shape or an elliptical shape. Among them, the cross-sectional shape of the unit prism is preferably a triangle, and more preferably an isosceles triangle. In addition, as a cross-sectional shape of the unit prism, for example, as shown in FIG. In particular, it is preferable that the cross-sectional shape of the unit prisms is an isosceles triangle, and the isosceles triangles of the cross section be arranged to be symmetrical about the normal line N. This is because the luminance in the normal direction can be improved for the light emitted from the unit prism. Furthermore, when the cross-sectional shape of the unit prism is an isosceles triangle, from the viewpoint of improving the luminance in the normal direction, the apex angle located between the equal sides and projecting on the light emission surface side is 60 ° The angle is preferably 120 ° or less, more preferably 80 ° to 100 °, and particularly preferably 90 °.

  The protrusion height of the unit prism can be appropriately adjusted according to the size and the like of the information communication apparatus of the present disclosure, and is not particularly limited. The specific protrusion height of the unit prism is, for example, 10 μm or more, and may be 30 μm or more. Further, the protrusion height of the unit prism is, for example, 200 μm or less, and may be 100 μm or less. Further, the width of the bottom surface of the unit prism along the arrangement direction of the unit prism can be appropriately adjusted according to the size of the information communication apparatus of the present disclosure, etc., and is not particularly limited. The specific width of the bottom of the unit prism is, for example, 10 μm or more. Further, the specific width of the bottom surface of the unit prism is, for example, 200 μm or less, and may be 100 μm or less. The protruding height of the unit prism refers to the distance indicated by symbol H in FIG. 13, and the width of the bottom of the unit prism refers to the distance indicated by symbol W in FIG. 13.

  The arrangement direction of the plurality of unit prisms is preferably such an arrangement direction that can impart a desired light collecting function to the optical functional layer, and is not particularly limited. As described above, when two or more optical functional layers are laminated, for example, as shown in FIG. 14, the arrangement direction of the unit prisms 41 in each of the optical functional layers 4a and 4b is preferably different. It is preferable that each arrangement direction is orthogonal.

  The material of the unit prism is preferably a material that can form a unit prism having a desired light collecting function, and is not particularly limited. Examples of the material of the unit prism include general resin materials. Specifically, ionizing radiation curable resins such as ultraviolet curable resins and electron beam curable resins, thermosetting resins, thermoplastic resins and the like can be mentioned.

  The method of forming the unit prism can be the same as the method of forming a general unit prism, and thus the description thereof is omitted here. In addition, the method disclosed by Unexamined-Japanese-Patent No. 2012-209110 is employable, for example.

  For example, as shown in FIGS. 12 to 14, the unit prism can be configured to have the unit prism 41 on one surface of the main body 42. The main body portion can be generally in the form of a flat plate having a constant thickness. The thickness of the main body portion is not particularly limited as long as it can support the unit prism.

  The main body portion preferably has desired light transmittance. For example, the average transmittance of the main body in the visible light range of 380 nm to 720 nm is preferably 50% or more, more preferably 70% or more, and particularly preferably 85% or more. In addition, average transmittance | permeability can be measured in room temperature and air | atmosphere using a ultraviolet spectrophotometer (UV-3100PC, Shimadzu Corp. make).

  As a material of a main-body part, the resin material generally used for an optical function layer is mentioned. Specific examples of the material of the main body portion include ionizing radiation curable resins such as ultraviolet curable resins and electron beam curable resins, thermosetting resins, thermoplastic resins, and the like.

  The method of forming the main body can be the same as the method of forming a general main body, and thus the description thereof is omitted here. In addition, the method disclosed by Unexamined-Japanese-Patent No. 2012-209110 is employable, for example.

(B) Low Reflection Layer The display unit in the present disclosure may have a low reflection layer on the side opposite to the light control layer of the printing layer.

  For example, as shown in FIG. 15, the optical functional layer in the present disclosure may have the low reflective layer 5 on the surface of the printing layer 1 opposite to the light control layer 2. In addition, since the code | symbol which is not demonstrated in FIG. 15 can be made to be the same as that of the other FIG. 2 (b) mentioned above, the description here is abbreviate | omitted. In the present disclosure, the reflection of external light irradiated to the information communication device of the present disclosure can be suppressed by having the low reflective layer as another member, and the visibility of the image to be displayed by the display unit is reduced. Can be suppressed.

  The low reflection layer in the present disclosure may be disposed on the side opposite to the light control layer of the printing layer, and it is preferable to exhibit the above-described effects. In the display unit in the present disclosure, a front protective layer for protecting the display unit is disposed on the side opposite to the transmission unit of the display unit, that is, on the side of the user using the information communication device of the present disclosure. At this time, for example, as shown in FIG. 16, the low reflective layer 5 can be disposed on at least one surface of the front surface protective layer 6. The front protective layer can be the same as a general protective layer, and the description thereof is omitted here.

  As described above, the low reflection layer in the present disclosure can suppress the reflection of external light emitted to the information communication device of the present disclosure, and suppress the decrease in the visibility of the image to be displayed by the display unit. It is preferable that it is a layer which exhibits the effect of being able to Examples of the low reflection layer in the present disclosure include a light interference layer, a light absorption layer, and a light scattering layer.

(C) Adhesive Layer The display unit in the present disclosure may have an adhesive layer, as necessary, between the members constituting the display unit. Among them, in the present disclosure, it is preferable to have a pressure-sensitive adhesive layer excellent in weather resistance.

  It is preferable that it is a material which has a weather resistance as an adhesive used for an adhesion layer. Specific examples of the pressure-sensitive adhesive include pressure-sensitive adhesives such as acrylics, urethanes, silicones, and rubbers. Among them, as the adhesive having weather resistance, for example, it is preferable to use an acrylic adhesive having as a main component a polymer or copolymer of an acrylic monomer such as acrylic acid ester or methacrylic acid ester, particularly n- It is preferable to use butyl acrylate, 2-ethylhexyl acrylate or the like.

  The adhesive layer preferably further contains an ultraviolet absorber. Weather resistance can be improved by containing an ultraviolet absorber. The ultraviolet absorber used in the adhesive layer may be, for example, either an inorganic type or an organic type, and an ultraviolet absorber having a reactive group in the molecule can also be used.

  A generally known method can be mentioned as a method for forming the adhesive layer, and thus the description thereof is omitted.

2. Transmission Unit The transmission unit in the present disclosure is a member that has a light source that emits light from the back of the display unit, and transmits information by using the light emitted from the light source as signal light. Further, the signal light transmitted from the transmission unit is received by the portable terminal via the display unit.

  The light source included in the transmission unit has a function of transmitting signal light to the portable terminal. For example, a plurality of LEDs can be used as such a light source.

  In addition, about the specific description about the transmission part in this indication, the Unexamined-Japanese-Patent No. 2016-197552, Unexamined-Japanese-Patent 2014-017581, 2012-128209, and Unexamined-Japanese-Patent 2017-123696 are mentioned, for example. Since the content may be similar to the content disclosed in the like, the description here is omitted.

3. Others In addition to the display unit and the transmission unit described above, the information communication apparatus in the present disclosure may have other configurations as needed. As another configuration of the information communication apparatus, for example, when using the information communication apparatus in a dark environment such as night, a backlight for irradiating a display unit from the back and displaying a predetermined image for the user You may have. As the backlight, a flat array of LEDs can be used. Further, a control unit for performing various controls of the display unit and the transmission unit can be mentioned. The control unit can be the same as the control unit used in a general information communication apparatus, and thus the description thereof is omitted here. The control unit is, for example, the same as the contents disclosed in, for example, JP-A-2016-197552, JP-A-2014-017581, JP-A-2012-128209, and JP-A-2017-123696. can do.

  The information communication apparatus in the present disclosure can receive the signal light transmitted from the transmission unit by the portable terminal via the display unit. The portable terminal may be any terminal that can receive signal light, and can be selected appropriately according to the signal light. In addition, about a portable terminal, it can be made to be the same as that of the portable terminal described in Unexamined-Japanese-Patent No. 2016-197552, Unexamined-Japanese-Patent No. 2014-017581, and Unexamined-Japanese-Patent No. 2017-123696 etc., for example.

B. Display Unit The display unit of the present disclosure includes a light source that emits light, and a transmission unit that transmits information using the light emitted from the light source as signal light, and the signal light transmitted from the transmission unit The light diffusion plate, the light control layer, and the print layer are sequentially stacked from the side facing the transmitter, which is used in an information communication device to be received by a mobile terminal and used to display an image, and the print layer is A light transmitting portion having a light transmitting property for transmitting incident light, the light control layer having a plurality of grooves extending in an arbitrary direction, being made of a transparent resin and transmitting incident light; And a light absorbing portion arranged in the groove and configured to absorb light, wherein the light diffusing plate reflects the light transmitted through the light transmitting portion of the light control layer. It is a member which has sex.

  By using the display unit of the present disclosure for an information communication apparatus, it is possible to achieve better information reception by the portable terminal even in an environment where the illuminance of external light is high. The display unit of the present disclosure can be the same as the content described in the section “A. Information communication device 1. Display unit”, and thus the description thereof is omitted here.

C. Laminate The laminate of the present disclosure includes a light source that emits light, and a transmission unit that transmits information using the light emitted from the light source as signal light, and the signal light transmitted from the transmission unit Is used in a display unit used in an information communication apparatus, which is received by a portable terminal, the display unit displays an image, and has a light diffusion plate on the side facing the transmission unit, and the light diffusion plate The light control layer and the print layer are laminated in order from the side opposite to the side facing the transmission unit of the light diffusion plate, and the print layer is The light control layer has a plurality of grooves extending in an arbitrary direction, and the light control layer is made of transparent resin and transmits light incident thereon. And a light absorbing portion which is made of a light absorbing material disposed in the groove and which absorbs light. It is a member.

  By using the display unit of the layered information communication device of the present disclosure, it is possible to more favorably receive information by the portable terminal even in an environment where the illuminance of external light is high. The display unit of the present disclosure can be the same as the content described in the section “A. Information communication device 1. Display unit”, and thus the description thereof is omitted here.

  The present invention is not limited to the above embodiment. The above embodiment is an exemplification, and it has substantially the same configuration as the technical idea described in the claims of the present invention, and any one having the same function and effect can be used. It is included in the technical scope of the invention.

[Reference example]
As shown to Fig.17 (a), the laminated body on which the light control layer 2 and the light-diffusion plate 3 were laminated | stacked was prepared. On the light diffusion plate 3 side of the laminate, an LED box in which LEDs are arranged in parallel is disposed. Further, the hololight H was disposed so that the incident angle was 60 ° from the light control layer 2 side of the laminate. The LED emitted light h _y , and the hololight H emitted light h _x (illuminance: 15000 lx). That is, the light h _x is an external light, and the light h _y is an internal light.
-Light control layer: The light control layer as shown to Fig.3 (a), (b) was used. A urethane acrylate prepolymer (ultraviolet curable resin) was used as the material of the light transmitting portion (thickness: 195 μm, groove depth: 150 μm). Further, as the material of the light absorbing portion, 50 parts by mass of black spherical bead-like particles having a minimum particle diameter of 2 μm and a maximum particle diameter of 3 μm in 100 parts by mass of a transparent acrylic ultraviolet curable prepolymer As a liquid UV curable resin composition in which 2 parts by mass of 1-hydroxy-cyclohexyl-phenyl-ketone (trade name: Irgacure 184, manufactured by Ciba Specialty Chemicals) was mixed was used. In the light control layer, the groove portion formed in the light transmitting portion has a trapezoidal cross-sectional shape, and the light control layer is disposed so that the light h _x from the hololight H is incident from the upper bottom (shorter side) of the trapezoidal shape. .
Light diffusion plate: A milky white acrylic resin was used as a material of the light diffusion plate (thickness: 3 mm).

[Comparative example]
As shown in FIG. 17 (b), the same reference example was used except that the light control layer was not used.

[Evaluation]
As shown in FIGS. 17A and 17B, a luminance meter L is disposed at a distance of 2 m from the surface of the light control layer 2 of the laminated body, and the luminance is measured when light h _x and h _y are irradiated. did. Further, from the measurement results, the luminance when irradiated with only light h _x, and light h _y only to calculate the ratio of luminance when irradiated, were evaluated for contrast ratio (SN ratio). The results are shown in Table 1. In Table 1, ○ in the case of irradiation, and x in the case of no irradiation.

  From the results of the reference example and the comparative example, it was found that by using the light control layer, it is possible to suppress the incidence of external light and obtain an excellent contrast ratio.

1 ... printing layer 2 ... light control layer 3 ... light diffusion plate 4 ... optical function layer 5 ... low reflection layer h _x ... light, outside light h _y ... light, inside light, signal light 10 ... display unit 20 ... transmission unit 100 ... Information communication device

Claims (8)

It has a display part which displays an image, and a light source which irradiates light from the back of the display part, and has a transmission part which transmits information by making light irradiated from the light source into signal light, and it transmits from the transmission part The signal light may be received by a portable terminal via the display unit.
In the display unit, a light diffusion plate, a light control layer, and a print layer are sequentially stacked from the side facing the transmission unit,
The print layer is light transmissive to transmit light incident on the display unit.
The light control layer has a plurality of grooves extending in an arbitrary direction, and is formed of a light transmitting material which is made of a transparent resin and transmits incident light, and a light absorbing material disposed in the grooves. And a light absorbing portion that absorbs light,
The information communication apparatus, wherein the light diffusion plate has light reflectivity that reflects light transmitted through the light transmission portion of the light control layer.   The information communication device according to claim 1, wherein the light absorbing material contains a black coloring material exhibiting a blackish color.   The information communication apparatus according to claim 1, wherein a cross-sectional shape in a direction orthogonal to the extending direction of the groove is trapezoidal, and the trapezoidal leg has a convex in the cross section.   The information communication apparatus according to any one of claims 1 to 3, wherein the light control layer is stacked in direct contact with the light transmitting portion on the print layer.   The said display part has an optical function layer provided with the condensing function which condenses the said signal light transmitted from the said transmission part between the said light diffusing plate and the said light control layer. The information communication apparatus according to any one of claims 1 to 4.   The information communication apparatus according to any one of claims 1 to 5, wherein the display unit has a low reflective layer on the side opposite to the light control layer of the print layer. The information processing apparatus includes: a light source that emits light; and a transmission unit that transmits information by using the light emitted from the light source as signal light; the signal light transmitted from the transmission unit is received by a portable terminal Used in communication devices,
A light diffusion plate, a light control layer, and a print layer are laminated in order from the side that displays an image and faces the transmission unit,
The print layer is light transmissive to transmit incident light,
The light control layer has a plurality of grooves extending in an arbitrary direction, and is formed of a light transmitting material which is made of a transparent resin and transmits incident light, and a light absorbing material disposed in the grooves. And a light absorbing portion that absorbs light,
The display unit, wherein the light diffusion plate has light reflectivity that reflects light transmitted through the light transmission portion of the light control layer. The information processing apparatus includes: a light source that emits light; and a transmission unit that transmits information by using the light emitted from the light source as signal light; the signal light transmitted from the transmission unit is received by a portable terminal Used in the display unit used in the communication device,
The display unit displays an image, and has a light diffusion plate on the side facing the transmission unit.
The light diffusion plate has light reflectivity to reflect incident light,
A light control layer and a print layer are laminated in order from the side opposite to the side facing the transmission unit of the light diffusion plate,
The print layer is light transmissive to transmit light incident on the display unit.
The light control layer has a plurality of grooves extending in an arbitrary direction, and is formed of a light transmitting material which is made of a transparent resin and transmits incident light, and a light absorbing material disposed in the grooves. A laminate having a light absorbing portion that absorbs light.