CN107436507A - Backlight module and apply its display device - Google Patents

Backlight module and apply its display device Download PDF

Info

Publication number
CN107436507A
CN107436507A CN201610350728.6A CN201610350728A CN107436507A CN 107436507 A CN107436507 A CN 107436507A CN 201610350728 A CN201610350728 A CN 201610350728A CN 107436507 A CN107436507 A CN 107436507A
Authority
CN
China
Prior art keywords
backlight module
heat
backboard
light source
conducting glue
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
CN201610350728.6A
Other languages
Chinese (zh)
Inventor
罗文金
潘钧允
黄星童
韦干佑
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.)
Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
Original Assignee
Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry 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 Hongfujin Precision Industry Shenzhen Co Ltd, Hon Hai Precision Industry Co Ltd filed Critical Hongfujin Precision Industry Shenzhen Co Ltd
Priority to CN201610350728.6A priority Critical patent/CN107436507A/en
Publication of CN107436507A publication Critical patent/CN107436507A/en
Pending legal-status Critical Current

Links

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
    • 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
    • G02F1/133628Illuminating devices with cooling means

Landscapes

  • 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, it includes a backboard, the plastic frame for being arranged at backboard periphery and at least one light source, the backboard is made up of the material with heat conduction effect, the backlight module also includes the heat-conducting glue being fixedly installed on the backboard, and at least one light source is embedded in the heat-conducting glue.The present invention also provides the display device using this kind of backlight module.Light source of the present invention is embedded in heat-conducting glue, and this heat caused by light source to conduct to backboard, backboard by the heat-conducting glue to conduct heat to the external world again so that heat caused by light source can effectively be spread out.

Description

Backlight module and apply its display device
Technical field
The present invention relates to a kind of Bei Guang Mo Group and a kind of application the Bei Guang Mo Group display device.
Background technology
Liquid crystal display is a kind of by backlight module is luminous, a kind of display of the display image on liquid crystal display panel.As liquid crystal display direction slimming direction is developed, the design of backlight module also makes every effort to more frivolous.Backlight module generally use LED lamp source provides light source.Referring to Fig. 1, it is the structural representation of prior art backlight module 1.The backlight module 1 is arranged at the optical diaphragm group 12 that the plastic frame 11, one of the periphery of backboard 10 is arranged on backboard 10 and surrounded by plastic frame 11 including a backboard 10, one.The optical diaphragm group 12 includes the light guide plate 121 being arranged on backboard 10.The backlight module 1 also includes a LED light bar 13, and the LED light bar 13 includes a LED bases 131 and the LED 132 being arranged on LED bases 131.In order to effectively reduce the integral thickness of backlight module, LED light bar 13 is generally pasted onto on the plastic frame 11, and the face backboard 10 of LED 132.Such LED 132 is located in the cavity surrounded by LED bases 131, plastic frame 11, backboard 10, light guide plate 121, heat caused by LED 132 is caused not exported by backboard 10 or other media outside backlight module 1 effectively, concentrated so as to form thermal source in cavity, and thermal source concentration easily causes panel circuit failure, influences the appearance of the problems such as panel liquid crystal rotation, blooming piece deformation, reduction of LED efficiency etc..
The content of the invention
In view of this, it is necessary to a kind of backlight module of display device is provided, for solving the heat dissipation problem of backlight of display device module.
A kind of backlight module, it includes a backboard, the plastic frame for being arranged at backboard periphery and at least one light source, the backboard is made up of the material with heat conduction effect, the backlight module also includes the heat-conducting glue being fixedly installed on the backboard, and at least one light source is embedded in the heat-conducting glue.
Preferably, at least one groove is offered on the heat-conducting glue, a light source is correspondingly equipped with each described groove, and the light source directly contacts with heat-conducting glue.
Preferably, the backlight module also includes the light guide plate being arranged on backboard, and the light guide plate is located at the side of at least one light source.
Preferably, the backlight module also includes a reflector plate, and the reflector plate is arranged on light guide plate close to the side of backboard.
Preferably, the backlight module also includes an optical diaphragm group, and the optical diaphragm group is arranged on side of the light guide plate away from backboard, and the optical diaphragm group includes one first diffusion barrier, a brightness enhancement film and one second diffusion barrier being cascading.
Preferably, each described groove penetrates the heat-conducting glue towards the side of light guide plate, so that the light source being placed in groove can be directly toward the light guide plate.
Preferably, at least one light source is fixedly installed on a circuit board, and the circuit board cover is on the heat-conducting glue.
Preferably, the backboard is metal material.
Preferably, the heat-conducting glue is heat conductive silica gel.
In addition, also provide the display device using this kind of backlight module.
Light source of the present invention is embedded in heat-conducting glue, this enables heat caused by light source to be conducted by the heat-conducting glue to backboard, backboard conducts heat to the external world again, heat caused by light source is effectively spread out, so as to effectively avoid in backlight module formed thermal source concentrate, and then avoid because thermal source concentrate and caused by panel circuit failure, influence panel liquid crystal rotation, blooming piece deformation, light source efficiency reduce a series of problems, such as.
Brief description of the drawings
Fig. 1 is the diagrammatic cross-section of the backlight module of prior art.
Fig. 2 is the decomposing schematic representation of the backlight module of present pre-ferred embodiments.
Fig. 3 is the schematic diagram of the backlight module of present pre-ferred embodiments.
Fig. 4 is sectional views of the Fig. 3 along IV-IV directions.
Fig. 5 is sectional views of the Fig. 3 along V-V directions.
Fig. 6 is sectional views of the Fig. 3 along VI-VI directions.
Fig. 7 is the diagrammatic cross-section of the display device of present pre-ferred embodiments.
Main element symbol description
Backlight module 1、2
Backboard 10、20
Plastic frame 11、21
Receiving space 201
LED light bar 13
LED bases 131
LED 132
Optical diaphragm group 12
Reflector plate 220
Light guide plate 121、221
Blooming piece 222
Light source 23
Exiting surface 233
Incidence surface 224
Circuit board 231
Heat-conducting glue 24
Groove 241
Display module 110
Display device 100
Following embodiment will combine above-mentioned accompanying drawing and further illustrate the present invention.
Embodiment
Also referring to Fig. 2-3, the backlight module 2 of present pre-ferred embodiments, it includes a backboard 20, is arranged at the plastic frame 21 and at least one light source 23 of the periphery of backboard 20.The backboard 20 is combined as a whole with the plastic frame 21, forms a receiving space 201.At least one light source 23 is contained in the receiving space 201.For the light source 23 to provide the light needed for display, it can be light emitting diode (lighting emitting diode, LED) lamp or cathode fluorescent tube (Cold Cathode Fluorescent Lamp, CCFL), hot-cathode fluorescent lamp (Hot Cathode Fluorescent Lamp, HCFL) or luminous lamp strip.In the present embodiment, the light source 23 is LED.
The backboard 20 is made up of the material with heat conduction effect.In the present embodiment, the backboard 20 is metal material, such as stainless steel, aluminium alloy, titanium alloy, but is not limited to above-mentioned listed material, or commonly used in the art other as backboard and have a material of heat conduction effect.
Described backlight module 2 also includes a heat-conducting glue 24 for being fixedly installed on backboard 20 and being set adjacent to the side of plastic frame 21, and the heat-conducting glue 24 is located in receiving space 201.At least one light source 23 is embedded in the heat-conducting glue 24.At least one light source 23 directly contacts with heat-conducting glue 24 is conducted to heat-conducting glue 24 to realize by heat caused by light source 23, the heat-conducting glue 24 directly contacts with backboard 20 is conducted to backboard 20 to realize by the heat of heat-conducting glue 24, and the backboard 20 is further by heat diffusion to the outside of backlight module 2.
At least one light source 23 is fixedly installed on a circuit board 231.In the present embodiment, the circuit board 231 is a flexible PCB.The circuit board 231 and external power source(It is not shown)Connect to provide power supply to light source 23.
In the present embodiment, the heat-conducting glue 24 substantially strip, to should circuit board 231 be also configured as strip.
Fig. 2 and Fig. 4 are please referred to, at least one groove 241 is offered on the heat-conducting glue 24, and length direction of at least one groove 241 along heat-conducting glue 24 is intervally arranged.A light source 23 is equipped with each described groove 241, and the light source 23 directly contacts with heat-conducting glue 24.Preferably, the light source 23 directly contacts the bottom of groove 241.The quantity of the groove 241 is equal with the quantity of the light source 23, so as to house a pair of light sources 23 answered in each groove 241.
The heat-conducting glue 24 can be the good colloid of various heat conductivilitys commonly used in the art, such as heat conductive silica gel.When the light source 23 is placed in the groove 241, the light source 23 is directly contacted with heat-conducting glue, and heat caused by light source 23 is conducted into heat-conducting glue 24.
Further referring to Fig. 3, when the light source 23 is placed in the groove 241, the circuit board 231 is covered on the heat-conducting glue 24.
Fig. 5 is the sectional view along the V-V directions shown in Fig. 3, and fluted 241 are wherein correspondingly arranged at V-V hatchings;Fig. 6 is the sectional view along Fig. 3 VI-VI directions, and groove 241 is wherein correspondingly not provided with VI-VI hatchings.
Incorporated by reference to Fig. 5 and Fig. 6 is further regarded to, the backlight module 2 also includes a light guide plate 221 to guide radiation direction, to improve brilliant degree and control brightness uniformity.The light guide plate 221 is placed in receiving space 201 and positioned at the side of heat-conducting glue 24 and light source 23, and the heat-conducting glue 24 and light source 23 are between plastic frame 21 and light guide plate 221.As shown in figure 5, each described groove 241 penetrates heat-conducting glue 24 towards the side of light guide plate 221, so that the light source 23 being placed in groove 241 can be directly toward the incidence surface 224 of the light guide plate 221.
It should be understood that the exiting surface 233 of the light source 23 can be provided with an interval with the incidence surface 224 of the light guide plate 221(As shown in Figure 5), can also directly attach the incidence surface 224 of the light guide plate 221.
As shown in Figures 4 and 5, the size of the light source 23 is suitable with the size of groove 241, so that light source 23 is just contained in a groove 241.In other examples, the size of the light source 23 is also greater than the size of groove 241, and the part of light source 23 is placed in a groove 241, and in such cases, one end that preferably described light source 23 has exiting surface 233 is convexly equipped in outside groove 241.
In general, light guide plate 221 is that propylene is pressed into the smooth wedge-shaped plate in surface with the method for ejection formation, then apparatus high reflectance and the material of extinction does not stamp circular or square diffusion point with screen painting in the bottom surface of light guide plate 221.
It should be understood that the backlight module 2 also includes a reflector plate 220 and a blooming piece 222.The reflector plate 220 is arranged on light guide plate 221 close to the side of backboard 20, the light spilt is reflected back in light guide plate 221, to increase the service efficiency of light.The blooming piece 222 is arranged on side of the light guide plate 221 away from backboard 20, to correct the direction of light, and improves the briliancy of backlight module.The blooming piece 222 generally includes one first diffusion barrier being cascading(It is not shown), a brightness enhancement film(It is not shown)With one second diffusion barrier(It is not shown).
It should be understood that the backlight module 2 can also further comprise the conventional other elements in this area, herein without repeating.
In the present embodiment, the plastic frame 21 can use the various materials commonly used in the art as plastic frame.
Referring to Fig. 7, a display device 100 of the present invention also protection application backlight module 2, the display device 100 include the display module 110 of backlight module 2 and one.The display device 100 is liquid crystal display device.
The display module 110 is display module structure commonly used in the art, and such as described display module 110 may include one first polaroid stacked gradually(It is not shown), a colored filter substrate(It is not shown), a liquid crystal layer(It is not shown), a thin-film transistor array base-plate(It is not shown)And one second polaroid(It is not shown).First polaroid and the second polaroid are polaroid commonly used in the art, and the base layer of polaroid is made up of a polarisation material, and the polarisation material includes acid polyethylene (Poly Vinyl alcohol, PVA).
The backlight module 2 of the present invention on backboard 20 by directly setting heat-conducting glue 24, and light source 23 is embedded in the heat-conducting glue 24, heat caused by light source 23 is set directly to be conducted to heat-conducting glue 24, heat is further conducted to backboard 20 and outside by heat-conducting glue 24, heat caused by light source 23 is effectively spread out, so as to effectively avoid in backlight module 2 formed thermal source concentrate, and then avoid because thermal source concentrate and caused by panel circuit failure, influence panel liquid crystal rotation, blooming piece deformation, light source efficiency reduce a series of problems, such as.
In addition, those skilled in the art can also make various modifications, addition and replacement in other forms and details in the claims in the present invention scope of disclosure and spirit.Certainly, the change such as these various modifications, addition and replacements for being made according to present invention spirit, should all be included within scope of the present invention.

Claims (10)

1. a kind of backlight module, it includes a backboard, the plastic frame for being arranged at backboard periphery and at least one light source, the backboard and is made up of the material with heat conduction effect, it is characterised in that:The backlight module also includes the heat-conducting glue being fixedly installed on the backboard, and at least one light source is embedded in the heat-conducting glue.
2. backlight module as claimed in claim 1, it is characterised in that:At least one groove is offered on the heat-conducting glue, a light source is correspondingly equipped with each described groove, and the light source directly contacts with heat-conducting glue.
3. backlight module as claimed in claim 2, it is characterised in that:The backlight module also includes the light guide plate being arranged on backboard, and the light guide plate is located at the side of at least one light source.
4. backlight module as claimed in claim 3, it is characterised in that:The backlight module also includes a reflector plate, and the reflector plate is arranged on light guide plate close to the side of backboard.
5. backlight module as claimed in claim 3, it is characterised in that:The backlight module also includes an optical diaphragm group, and the optical diaphragm group is arranged on side of the light guide plate away from backboard, and the optical diaphragm group includes one first diffusion barrier, a brightness enhancement film and one second diffusion barrier being cascading.
6. backlight module as claimed in claim 3, it is characterised in that:Each described groove penetrates the heat-conducting glue towards the side of light guide plate, so that the light source being placed in groove can be directly toward the light guide plate.
7. backlight module as claimed in claim 1, it is characterised in that:At least one light source is fixedly installed on a circuit board, and the circuit board cover is on the heat-conducting glue.
8. backlight module as claimed in claim 1, it is characterised in that:The backboard is metal material.
9. backlight module as claimed in claim 1, it is characterised in that:The heat-conducting glue is heat conductive silica gel.
10. the display device of backlight module described in any one in a kind of 1-9 using claim, the display device also includes a display module.
CN201610350728.6A 2016-05-25 2016-05-25 Backlight module and apply its display device Pending CN107436507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610350728.6A CN107436507A (en) 2016-05-25 2016-05-25 Backlight module and apply its display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610350728.6A CN107436507A (en) 2016-05-25 2016-05-25 Backlight module and apply its display device

Publications (1)

Publication Number Publication Date
CN107436507A true CN107436507A (en) 2017-12-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610350728.6A Pending CN107436507A (en) 2016-05-25 2016-05-25 Backlight module and apply its display device

Country Status (1)

Country Link
CN (1) CN107436507A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109143686A (en) * 2018-09-30 2019-01-04 厦门天马微电子有限公司 A kind of backlight module, display module and electronic equipment
CN109375420A (en) * 2018-11-30 2019-02-22 武汉华星光电技术有限公司 Backlight module
CN110891401A (en) * 2018-09-10 2020-03-17 杜尔克普-阿德勒股份公司 Cooling device for at least one component on a printed circuit board and printed circuit board
CN114967240A (en) * 2022-08-02 2022-08-30 惠科股份有限公司 Backlight module and display device

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101017282A (en) * 2007-02-27 2007-08-15 友达光电股份有限公司 LCD and back light module thereof
CN101187463A (en) * 2007-12-27 2008-05-28 深圳帝光电子有限公司 LED light source module with heat guiding system and radiation system
CN101251682A (en) * 2008-04-09 2008-08-27 友达光电股份有限公司 Back board assembly for backlight module
CN201237679Y (en) * 2008-07-18 2009-05-13 天马微电子股份有限公司 LCD model with LED backlight
CN102621718A (en) * 2012-02-15 2012-08-01 深圳市华星光电技术有限公司 Liquid crystal display module
CN102661550A (en) * 2012-05-09 2012-09-12 深圳市华星光电技术有限公司 Backlight module
CN102798044A (en) * 2012-08-02 2012-11-28 深圳市华星光电技术有限公司 Edge-lighting backlight module
CN102914909A (en) * 2012-11-14 2013-02-06 深圳市华星光电技术有限公司 Anti-light-leaking edge-in-type backlight liquid crystal module and liquid crystal display
CN102997132A (en) * 2012-11-19 2013-03-27 京东方科技集团股份有限公司 Backlight source and display device
CN105527752A (en) * 2015-12-25 2016-04-27 厦门天马微电子有限公司 Backlight module and display device thereof

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101017282A (en) * 2007-02-27 2007-08-15 友达光电股份有限公司 LCD and back light module thereof
CN101187463A (en) * 2007-12-27 2008-05-28 深圳帝光电子有限公司 LED light source module with heat guiding system and radiation system
CN101251682A (en) * 2008-04-09 2008-08-27 友达光电股份有限公司 Back board assembly for backlight module
CN201237679Y (en) * 2008-07-18 2009-05-13 天马微电子股份有限公司 LCD model with LED backlight
CN102621718A (en) * 2012-02-15 2012-08-01 深圳市华星光电技术有限公司 Liquid crystal display module
CN102661550A (en) * 2012-05-09 2012-09-12 深圳市华星光电技术有限公司 Backlight module
CN102798044A (en) * 2012-08-02 2012-11-28 深圳市华星光电技术有限公司 Edge-lighting backlight module
CN102914909A (en) * 2012-11-14 2013-02-06 深圳市华星光电技术有限公司 Anti-light-leaking edge-in-type backlight liquid crystal module and liquid crystal display
CN102997132A (en) * 2012-11-19 2013-03-27 京东方科技集团股份有限公司 Backlight source and display device
CN105527752A (en) * 2015-12-25 2016-04-27 厦门天马微电子有限公司 Backlight module and display device thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110891401A (en) * 2018-09-10 2020-03-17 杜尔克普-阿德勒股份公司 Cooling device for at least one component on a printed circuit board and printed circuit board
CN109143686A (en) * 2018-09-30 2019-01-04 厦门天马微电子有限公司 A kind of backlight module, display module and electronic equipment
CN109143686B (en) * 2018-09-30 2021-11-19 厦门天马微电子有限公司 Backlight module, display module and electronic equipment
CN109375420A (en) * 2018-11-30 2019-02-22 武汉华星光电技术有限公司 Backlight module
CN114967240A (en) * 2022-08-02 2022-08-30 惠科股份有限公司 Backlight module and display device

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Application publication date: 20171205

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