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CN107976840A - A kind of backlight module and display device - Google Patents

A kind of backlight module and display device Download PDF

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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
Authority
CN
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.)
Pending
Application number
CN201710974362.4A
Other languages
Chinese (zh)
Inventor
徐向阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to CN201710974362.4A priority Critical patent/CN107976840A/en
Publication of CN107976840A publication Critical patent/CN107976840A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133608Direct backlight including particular frames or supporting means
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133605Direct backlight including specially adapted reflectors
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133628Illuminating 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

A kind of backlight module and display device
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)

  1. 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. 2. backlight module according to claim 1, it is characterised in that the heat sink is made of metal material.
  3. 3. backlight module according to claim 2, it is characterised in that the heat sink includes aluminum strip.
  4. 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. 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. 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. 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. 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. 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. 10. a kind of display device, it is characterised in that including the backlight module any one of claim 1-9.
CN201710974362.4A 2017-10-19 2017-10-19 A kind of backlight module and display device Pending CN107976840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710974362.4A CN107976840A (en) 2017-10-19 2017-10-19 A kind of backlight module and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710974362.4A CN107976840A (en) 2017-10-19 2017-10-19 A kind of backlight module and display device

Publications (1)

Publication Number Publication Date
CN107976840A true CN107976840A (en) 2018-05-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710974362.4A Pending CN107976840A (en) 2017-10-19 2017-10-19 A kind of backlight module and display device

Country Status (1)

Country Link
CN (1) CN107976840A (en)

Citations (4)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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