CN107976840A - A kind of backlight module and display device - Google Patents
A kind of backlight module and display device Download PDFInfo
- Publication number
- CN107976840A CN107976840A CN201710974362.4A CN201710974362A CN107976840A CN 107976840 A CN107976840 A CN 107976840A CN 201710974362 A CN201710974362 A CN 201710974362A CN 107976840 A CN107976840 A CN 107976840A
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- China
- Prior art keywords
- guide plate
- backlight module
- light guide
- light
- light emitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000009792 diffusion process Methods 0.000 claims description 20
- 239000007769 metal material Substances 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000758 substrate Substances 0.000 description 11
- 239000010410 layer Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 239000004973 liquid crystal related substance Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- -1 acryl Chemical group 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000027756 respiratory electron transport chain Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133628—Illuminating devices with cooling means
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention provides a kind of backlight module and display device, which includes:Organic light emitting diode lamp bar, it has a flexible base board and the Organic Light Emitting Diode being arranged on the flexible base board;Heat sink, is provided with the organic light emitting diode lamp bar.The present invention can eliminate the gap between light emitting source and light guide plate in backlight module, increase effective lighting area of backlight module.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of backlight module and display device.
Background technology
Thin film transistor-liquid crystal display (Thin Film Transistor-Liquid Crystal Display, letter
Claim TFT-LCD) have the advantages that fast response time, colour gamut are high, resolution is high, low in energy consumption, ultra-thin, thus obtained widely should
With.TFT-LCD generally comprises liquid crystal panel and backlight, wherein liquid crystal panel include TFT substrate, color membrane substrates, TFT substrate and
Liquid crystal layer between color membrane substrates, further include upper polaroid above color membrane substrates and below TFT substrate it is lower partially
Mating plate.
It is the structure diagram of TFT-LCD of the prior art a kind of as shown in Figure 1, which includes backlight
110th, down polaroid 120, liquid crystal panel 130 and upper polaroid 140, wherein, liquid crystal panel 130 is arranged at 140 He of upper polaroid
Between down polaroid 120, backlight 11 is arranged at side of the down polaroid 120 away from liquid crystal panel 130.
A kind of structure diagram of backlight in the prior art is illustrated in figure 2, it uses LED as light emitting source 260.Should
LED light emitting sources are arranged at one side of light guide plate 220, its illumination launched is incident upon on light guide plate 220.The backlight further includes difference
The reflector plate 210 and diffusion sheet 230 of 220 both sides of light guide plate are arranged at, and is arranged on diffusion sheet 230 away from light guide plate 220 1
The prismatic lens 260 of side.
LED light emitting sources are made of multiple LED light-emitting components, and each LED light-emitting component is respectively provided with certain volume, occupies
Certain space.Due to the limitation of LED light-emitting component volume itself, there are certain gap between LED light emitting sources and light guide plate, make
Obtain backlight narrow frame to be restricted, cause the effective lighting area of backlight to reduce.
The content of the invention
To solve problem above, the present invention provides a kind of backlight module and display device, for eliminating in backlight module
Gap between light emitting source and light guide plate, increases effective lighting area of backlight module.
According to an aspect of the invention, there is provided a kind of backlight module, including:
Organic light emitting diode lamp bar, it has a flexible base board and the organic light emission two being arranged on the flexible base board
Pole pipe;
Heat sink, is provided with the organic light emitting diode lamp bar.
According to one embodiment of present invention, the heat sink is made of metal material.
According to one embodiment of present invention, the heat sink includes aluminum strip.
According to one embodiment of present invention, light guide plate is further included, at least one side of the light guide plate is close to set
There is the organic light emitting diode lamp bar.
According to one embodiment of present invention, organic light emission described in the light emission side face of the organic light emitting diode lamp bar
The light guide plate side of light guide plate side face where diode light bar.
According to one embodiment of present invention, reflector plate is further included, the light guide plate is provided with the reflector plate, is used for
By the light reflection exposed on the reflector plate into the light guide plate.
According to one embodiment of present invention, diffusion sheet is further included, the diffusion sheet is arranged at the light guide plate away from institute
The side of reflector plate is stated, the light for being projected based on the light guide plate forms uniform area light source.
According to one embodiment of present invention, prismatic lens is further included, the prismatic lens is arranged at the diffusion sheet away from institute
The side of light guide plate is stated, the light for the diffusion sheet to be transmitted is converged in predetermined angular range and projected.
According to one embodiment of present invention, four sides of the light guide plate are both provided with the Organic Light Emitting Diode
Lamp bar.
According to a further aspect of the invention, a kind of display device, including above-described backlight module are additionally provided.
Beneficial effects of the present invention:
The present invention, as the light emitting source in backlight module, can eliminate light emitting source using the OLED being arranged on flexible base board
Gap between light guide plate, realizes display panel narrow frame, increases the effective lighting area of light emitting source.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by specification, rights
Specifically noted structure is realized and obtained in claim and attached drawing.
Brief description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, it is required in being described below to embodiment
Attached drawing does simple introduction:
Fig. 1 is a kind of TFT-LCD structure diagrams in the prior art;
Fig. 2 is a kind of back light module unit structure schematic diagram using LED as light emitting source in the prior art;
Fig. 3 is organic light emitting diode lamp bar structure diagram according to an embodiment of the invention;
Fig. 4 is light guide plate sectional schematic diagram according to an embodiment of the invention;
Fig. 5 is light guide plate schematic top plan view according to an embodiment of the invention;
Fig. 6 is back light module unit structure schematic diagram according to an embodiment of the invention.
Embodiment
Carry out the embodiment that the present invention will be described in detail below with reference to accompanying drawings and embodiments, how the present invention is applied whereby
Technological means solves technical problem, and that reaches technique effect realizes that process can fully understand and implement according to this.Need to illustrate
As long as not forming conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other,
The technical solution formed is within protection scope of the present invention.
The present invention provides a kind of backlight module, which includes organic light-emitting diode light bar and heat sink.Its
In, organic light emitting diode lamp bar has a flexible base board and the Organic Light Emitting Diode being arranged on the flexible base board.This has
Machine light-emitting diode light bar is arranged on heat sink, specifically, the flexible base board of the organic light emitting diode lamp bar be arranged at it is scattered
On hot plate.
In the present invention, it since the flexible base board has pliability, and can be bent, Organic Light Emitting Diode is set
On flexible substrates, organic light emitting diode lamp bar can be caused to be close to set with the other structures of backlight module, reduced organic
The space that light-emitting diode light bar occupies, improves effective lighting area of light emitting source.Further, by the Organic Light Emitting Diode
Lamp bar is arranged on heat sink, is conducive to as early as possible lose heat caused by the work of organic light emitting diode lamp bar.
It is OLED lamp bars (Organic Light- according to an embodiment of the invention as shown in Figure 3
EmittingDiode, Organic Light Emitting Diode) structure diagram, the OLED lamp bars 250 are including a flexible base board and are arranged at this
Organic Light Emitting Diode on flexible base board.Wherein, side of the OLED lamp bars 250 away from heat sink 270 is light emission side.
Specifically, as shown in figure 3, OLED lamp bars 250 are arranged on heat sink 270, wherein, OLED lamp bars 250 are using soft
Property substrate, without that using the rigid substrate substrate such as glass, organic light emitting diode lamp bar can be caused to bend.The flexible base board connects
Be close to heat sink 270, be conducive to heat sink comprehensive engagement, and then be conducive to heat and distribute.OLED lamp bars 250 are away from flexible base
The side of plate and heat sink 270 is as light emission side, for sending light beam.Heat sink 270 is close to the flexible base of OLED lamp bars 250
Plate, distributes in time for heat caused by OLED is shone, to prevent the shine heats of generation of OLED from can not distribute and influence
Its performance.
In one embodiment of the invention, which is made of metal material.The heat transfer system of metal material
Number is high, good heat dissipation effect.The heat sink 270 can be made of different metal materials.Due to metal material ceramics relatively etc.
Other materials has preferably heat dissipation effect, when OLED can be shone in time using heat sink made of metal material 610
The heat of generation distributes, and the heat sink 270 is made preferably by metal material.Simultaneously as the heat conduction of different metal material
Ability is different, considers heat-sinking capability and production cost etc. factor, preferably aluminum strip is as heat sink 270.
In one embodiment of the invention, which further includes light guide plate, at least one side of the light guide plate
It is provided with the organic light emitting diode lamp bar.
Specifically, it is that light guide plate one side according to an embodiment of the invention is provided with OLED lamp bars as shown in Figure 4
Schematic diagram.The one side of light guide plate 220 is provided with OLED lamp bars 250, wherein, which is close to light guide plate 220
One side is set.Due to using OLED in OLED lamp bars 250, as light emitting source, OLED is usually by anode, hole transmission layer, hole
Several film layers such as implanted layer, luminescent layer, electron transfer layer and cathode are formed, and OLED is made on flexible substrates.Pass through
The flexible base board can realize that OLED lamp bars 250 and light guide plate 220 are close to set, and then realize both seamless connections.This
Sample eliminates the need for the connection gap between OLED lamp bars 250 and light guide plate 220, adds effective lighting area of OLED, at the same time
The footprint area of 220 surrounding OLED lamp bars 250 of light guide plate is also reduced, realizes the setting of display panel narrow frameization.
, can be equal in any two side of light guide plate 220 or any three sides to increase the brightness of backlight module
It is provided with OLED lamp bars 250, it might even be possible to be both provided with OLED lamp bars 250 in four sides of light guide plate 220.As shown in Figure 5
It is the top view that four side of light guide plate according to an embodiment of the invention is both provided with OLED lamp bars 250, in light guide plate 220
Four sides are both provided with OLED lamp bars 250, and OLED lamp bars 250 are close to the side of light guide plate 220.
In one embodiment of the invention, light guide plate where the light emission side face of the OLED lamp bars 250 OLED lamp bars
The light guide plate side of side face.Specifically, as shown in figure 4, light guide plate 220 is with certain thickness platy structure.OLED
Lamp bar 250 is set along 220 side of light guide plate, is close to side A where a sides of light guide plate 220, where its light emission side face b sides
Side B.
In one embodiment of the invention, which further includes reflector plate 210, as shown in Figure 6.Wherein, at this
Light guide plate 220 is provided with reflector plate 210, the light reflection that it is used to expose on the reflector plate is into light guide plate 220.Reflection
The light reflection that piece 210 is used to be emitted onto thereon enters in light guide plate 220, to improve the utilization rate of organic light emitting diode lamp bar.
As shown in figure 4, OLED lamp bars 250 are located at the one side of light guide plate 220, its light sent enters after light guide plate 220, some light
It can expose from light guide plate 220.The light reflection that reflector plate 210 exposes these is returned in light guide plate 220, can improve the profit of light emitting source
With rate.Wherein, the reflectivity of reflector plate 210 is higher, and reflecting effect is better.
In one embodiment of the invention, which further includes diffusion sheet 230.The diffusion sheet 230, which is arranged at, leads
Side of the tabula rasa 220 away from reflector plate 210, the light for being projected based on light guide plate 220 form uniform area source, such as Fig. 6 institutes
Show.Diffusion sheet 230 is usually made of diffusion layer, base material, three layers of protective layer, and base material is the high material of light transmission rate, diffusion layer and
Protective layer is generally made of acryl resin.Transparent little particle can be also added in diffusion layer as diffusion particle, in protective layer
The little particle of addition can play the role of anti stickness.By the light that light guide plate 220 is sent through that can be realized after diffusion sheet 230
It is uniformly distributed so that brightness uniforms in backlight face.
In one embodiment of the invention, which further includes prismatic lens 240.The prismatic lens 240 is arranged at expansion
Side of the discrete piece 230 away from light guide plate 220, the light for diffusion sheet 230 to be transmitted are converged in predetermined angular range and projected,
As shown in Figure 6.Specifically, the prismatic lens 240 is concentrated on the light that diffusion sheet 230 transmits necessarily using total reflection and refraction
Outgoing in angular range, so as to improve brightness within the vision.Discrete piece 230 is transmitted through the light of prismatic lens 240, only a certain
It can be just emitted within angular range by refraction action, remaining light is reflected back because being unsatisfactory for refracting condition by prism edge
The reflector plate of light source bottom, then acted on by reflector plate and be emitted again.
According to another aspect of the present invention, a kind of display device is additionally provided, which includes above-described
Backlight module.Using above-described backlight module, the gap between the light emitting source in backlight module and light guide plate can be eliminated,
The effective lighting area of light emitting source is added, can also realize that display panel narrow frameization designs.
While it is disclosed that embodiment as above, but the content only to facilitate understand the present invention and adopt
Embodiment, is not limited to the present invention.Any those skilled in the art to which this invention pertains, are not departing from this
On the premise of the disclosed spirit and scope of invention, any modification and change can be made in the implementing form and in details,
But the scope of patent protection of the present invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
- A kind of 1. backlight module, it is characterised in that including:Organic light emitting diode lamp bar, it has a flexible base board and the organic light-emitting diodes being arranged on the flexible base board Pipe;Heat sink, is provided with the organic light emitting diode lamp bar.
- 2. backlight module according to claim 1, it is characterised in that the heat sink is made of metal material.
- 3. backlight module according to claim 2, it is characterised in that the heat sink includes aluminum strip.
- 4. backlight module according to any one of claim 1-3, it is characterised in that further include light guide plate, the leaded light At least one side of plate is provided with the organic light emitting diode lamp bar.
- 5. backlight module according to claim 4, it is characterised in that the light emission side of the organic light emitting diode lamp bar is just To the light guide plate side of light guide plate side face where the organic light emitting diode lamp bar.
- 6. backlight module according to claim 5, it is characterised in that further include reflector plate, be provided with the reflector plate The light guide plate, for the light reflection that will expose on the reflector plate into the light guide plate.
- 7. backlight module according to claim 6, it is characterised in that further include diffusion sheet, the diffusion sheet is arranged at institute Side of the light guide plate away from the reflector plate is stated, the light for being projected based on the light guide plate forms uniform area light source.
- 8. backlight module according to claim 7, it is characterised in that further include prismatic lens, the prismatic lens is arranged at institute Side of the diffusion sheet away from the light guide plate is stated, the light for the diffusion sheet to be transmitted is converged in predetermined angular range and penetrated Go out.
- 9. backlight module according to claim 4, it is characterised in that four sides of the light guide plate are both provided with described Organic light emitting diode lamp bar.
- 10. a kind of display device, it is characterised in that including the backlight module any one of claim 1-9.
Priority Applications (1)
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CN201710974362.4A CN107976840A (en) | 2017-10-19 | 2017-10-19 | A kind of backlight module and display device |
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CN201710974362.4A CN107976840A (en) | 2017-10-19 | 2017-10-19 | A kind of backlight module and display device |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101819989A (en) * | 2010-03-29 | 2010-09-01 | 友达光电股份有限公司 | White organic light emitting diode |
CN203082693U (en) * | 2013-01-08 | 2013-07-24 | 苏州福华电子科技有限公司 | Backlight module |
US20130242600A1 (en) * | 2012-03-15 | 2013-09-19 | Jeremy C. Franklin | Backlight Structures and Backlight Assemblies for Electronic Device Displays |
CN204879695U (en) * | 2015-08-03 | 2015-12-16 | 上海江燕电梯配件研究所 | Backlight for display |
-
2017
- 2017-10-19 CN CN201710974362.4A patent/CN107976840A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101819989A (en) * | 2010-03-29 | 2010-09-01 | 友达光电股份有限公司 | White organic light emitting diode |
US20130242600A1 (en) * | 2012-03-15 | 2013-09-19 | Jeremy C. Franklin | Backlight Structures and Backlight Assemblies for Electronic Device Displays |
CN203082693U (en) * | 2013-01-08 | 2013-07-24 | 苏州福华电子科技有限公司 | Backlight module |
CN204879695U (en) * | 2015-08-03 | 2015-12-16 | 上海江燕电梯配件研究所 | Backlight for display |
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Applicant after: TCL China Star Optoelectronics Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Applicant before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |
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Application publication date: 20180501 |