CN104360537A - Direct type backlight module and display device - Google Patents

Direct type backlight module and display device Download PDF

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Publication number
CN104360537A
CN104360537A CN201410617979.7A CN201410617979A CN104360537A CN 104360537 A CN104360537 A CN 104360537A CN 201410617979 A CN201410617979 A CN 201410617979A CN 104360537 A CN104360537 A CN 104360537A
Authority
CN
China
Prior art keywords
led lamp
blue led
mode set
lens
down straight
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
CN201410617979.7A
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Chinese (zh)
Inventor
孟长军
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.)
Shenzhen Skyworth RGB Electronics Co Ltd
Original Assignee
Skyworth LCD Shenzhen 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 Skyworth LCD Shenzhen Co Ltd filed Critical Skyworth LCD Shenzhen Co Ltd
Priority to CN201410617979.7A priority Critical patent/CN104360537A/en
Publication of CN104360537A publication Critical patent/CN104360537A/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
    • G02F1/133609Direct backlight including means for improving the color mixing, e.g. white
    • 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
    • G02F1/133603Direct backlight with LEDs
    • 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

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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)
  • Liquid Crystal (AREA)

Abstract

The invention discloses a direct type backlight module and a display device. The direct type backlight module comprises a back panel, a backlight source and a diffusion plate, wherein the backlight source is arranged in the back panel; the diffusion plate is arranged above the backlight source; the backlight source comprises a plurality of LED (Light Emitting Diode) light bars; each LED light bar comprises a circuit board, a plurality of blue LED lamps and a lens; the blue LED lamps are fixedly and electrically connected to the circuit boards; the lenses are arranged above the blue LED lamps; the surface, which is away from the blue LED lamps, of each lens is provided with a red and green fluorescent powder layer; the blue LED lamps emit blue light, the blue light is mixed by the red and green fluorescent powder layer son the lenses to form white light, and the white light is provided for the diffusion plate; thus the phenomenon of non-uniform chromaticity formed on the diffusion plate due to dispersion of light emitted by the existing white LED after passing through the conventional lens can be effectively avoided, and meanwhile the color field of a liquid crystal module can be improved after a liquid crystal panel is matched.

Description

Down straight aphototropism mode set and display device
Technical field
The present invention relates to plane display field, particularly relate to a kind of down straight aphototropism mode set and display device.
Background technology
Plane display field of today, LCD TV becomes main flow, and the proportion wherein shared by LED backlight LCD TV is increasing.Splendid colour gamut display is one of the most noticeable advantage of LED backlight, and bright in luster and saturation degree is two important behaviours of colour gamut.Along with growth in the living standard, people more and more focus on the performance of television colors aspect, are not only satisfied with the performance of the common colour gamut of original TV, so high colour gamut TV enters the sight line of people.
The display module of tradition LED-backlit high colour gamut mainly realizes being the fluorescent powder by adjusting LED, changes the different red green fluorescence powder of crest and realizes mating with panel and form high colour gamut and show.
After dispersion phenomenon refers to that polychromatic light enters refractive index different medium, because it has different refractivity to the light of various frequency, there is deviation in various degree the direction of propagation of various coloured light, and the thus just dispersion separately when leaving prism, forms spectrum, this phenomenon.
Straight lower backlight module carries out luminous intensity distribution to realize through secondary lens by LED bright dipping, become the process of area source from pointolite.
The light that LED penetrates needs through the uniform hot spot of lens forming, and lens material is generally optical-grade plastic PMMA; Because lens are different from the refractive index of air, be directed to the polychromatic light that white light that blue-light excited red green fluorescence powder sends is a kind of mixing, dispersion phenomenon can be there is at lens interior, the light of outgoing can form colored striped in diffusion version, affects the display effect of the display device with this backlight module.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of down straight aphototropism mode set and display device, and the diffuser plate being intended to solve existing down straight aphototropism mode set can form color fringe, and then the impact technical matters of the display device display effect of this backlight module.
For achieving the above object, the invention provides a kind of down straight aphototropism mode set, described down straight aphototropism mode set comprises backboard, the diffuser plate be located at the backlight in backboard and be located at above described backlight, described backlight comprises several LED lamp bar, each LED lamp bar comprises circuit board, fix and the several blue LED lamp be electrically connected on described circuit board and the lens be located at above described blue LED lamp, described lens are provided with red green fluorescence bisque away from the surface of described blue LED lamp, described blue LED lamp sends blue light, white light is formed after described red green fluorescence bisque mixed light, be supplied to described diffuser plate.
Preferably, described red green fluorescence bisque comprises red fluorescence powder, green emitting phosphor and epoxy resin or silica gel, and described red fluorescence powder, green emitting phosphor are evenly coated on the surface of described lens away from described blue LED lamp after mixing with epoxy resin or silica gel.
Preferably, described red green fluorescence bisque comprises red fluorescence powder, green emitting phosphor and polycarbonate, polymethylmethacrylate or glass, described red fluorescence powder, green emitting phosphor make by injection mo(u)lding the lens case matched with described lens with after polycarbonate, polymethylmethacrylate or glass Homogeneous phase mixing, and are installed on the side of blue LED lamp described in described lens.
Preferably, described blue LED lamp comprises blue light emitting chip.
Preferably, described blue light emitting chip is gallium nitride chip.
Preferably, described backboard comprises base plate and is connected to several side plates of described base portion peripheral, and described backlight is installed on described base plate, and described diffuser plate is installed on described side plate in the top of described backlight.
Preferably, described down straight aphototropism mode set also comprises and is located at the optical diaphragm group of described diffuser plate away from described backlight side.
In addition, to achieve these goals, the present invention also provides a kind of display device, described display device comprises backlight module and is located at the display panel above described backlight module, described backlight module comprises backboard, the diffuser plate be located at the backlight in backboard and be located at above described backlight, described backlight comprises several LED lamp bar, each LED lamp bar comprises circuit board, fix and the several blue LED lamp be electrically connected on described circuit board and the lens be located at above described blue LED lamp, described lens are provided with red green fluorescence bisque away from the surface of described blue LED lamp, described blue LED lamp sends blue light, white light is formed after described red green fluorescence bisque mixed light, be supplied to described diffuser plate.
Preferably, described display panel is display panels, and described display panels comprises the colored filter substrate that thin film transistor base plate and described thin film transistor base plate are oppositely arranged and the liquid crystal layer be located between described thin film transistor base plate and described colored filter substrate.
Down straight aphototropism mode set of the present invention and display device, blue LED lamp sends blue light, white light is formed after being arranged at the red green fluorescence bisque mixed light on lens, be supplied to described diffuser plate, the colourity uneven phenomenon formed on diffuser plate after effectively avoiding existing white light LEDs that dispersion occurs after conventional lenses, can promote the colour gamut of liquid crystal module after liquid crystal panel of simultaneously arranging in pairs or groups.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of down straight aphototropism mode set of the present invention;
Fig. 2 is the cross-sectional view of the first embodiment of the LED lamp bar of down straight aphototropism mode set of the present invention;
Fig. 3 is the cross-sectional view of the second embodiment of the LED lamp bar of down straight aphototropism mode set of the present invention;
Fig. 4 is the cross-sectional view of display device of the present invention;
Fig. 5 is the cross-sectional view of an embodiment of the display panel of display device of the present invention.
The object of the invention realization, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of down straight aphototropism mode set, with reference to Fig. 1 and Fig. 2, in one embodiment, described down straight aphototropism mode set comprises backboard 200, the diffuser plate 600 be located at the backlight 400 in backboard 200 and be located at above described backlight 400, described backlight 400 comprises several LED lamp bar 420, each LED lamp bar 420 comprises circuit board 422, fix and the several blue LED lamps 424 be electrically connected on described circuit board 422 and the lens 426 be located at above described blue LED lamp 424, described lens 426 are provided with red green fluorescence bisque 428 away from the surface of described blue LED lamp 424, described blue LED lamp 424 sends blue light, white light is formed after described red green fluorescence bisque 428 mixed light, be supplied to described diffuser plate 600.The colourity uneven phenomenon formed on diffuser plate after can avoiding existing white light LEDs that dispersion occurs after conventional lenses, can promote the colour gamut of liquid crystal module after liquid crystal panel of simultaneously arranging in pairs or groups.
Further, described red green fluorescence bisque 428 comprises red fluorescence powder and green emitting phosphor and epoxy resin or silica gel.
Particularly, in the present embodiment, described red green fluorescence bisque 428 also comprises silica gel or epoxy resin.Described red fluorescence powder, green emitting phosphor are evenly coated on the surface of described lens 426 away from described blue LED lamp 424 after mixing with epoxy resin or silica gel, form described red green fluorescence bisque 428.Blue LED lamp 424 sends blue light and forms red-green glow at the red green fluorescence bisque 428 of lens 426 surface excitation, the blue light that mixing blue LED lamp 424 sends produces white light outgoing, the colourity uneven phenomenon formed on diffuser plate after can avoiding existing white light LEDs that dispersion occurs after conventional lenses, can promote the colour gamut of module after liquid crystal panel of simultaneously arranging in pairs or groups.
With reference to the cross-sectional view that Fig. 3, Fig. 3 are the second embodiment of the LED lamp bar of down straight aphototropism mode set of the present invention.
In the present embodiment, described red green fluorescence bisque 428 comprises red fluorescence powder and green emitting phosphor and polycarbonate (PC), polymethylmethacrylate (PMMA) or glass, described red fluorescence powder, green emitting phosphor with made the lens case matched with described lens 426 after polycarbonate, polymethylmethacrylate or glass Homogeneous phase mixing by injection mo(u)lding, then the side of blue LED lamp 424 described in described lens 426 is fixedly installed in, form described red green fluorescence bisque 428, above-mentioned technique effect can be realized equally.
Further, in the present embodiment, described blue LED lamp 424 comprises blue light emitting chip 425, and preferably, described blue light emitting chip 425 is gallium nitride chip.Blue LED lamp 424 of the present invention does not encapsulate fluorescent powder, avoids due to luminescence chip heating and causes the problem that fluorescence pink colour declines, and then effectively extending the serviceable life of backlight 400.
Further, described backboard 200 comprises base plate 220 and is connected to several side plates 240 of described base plate 220 periphery, and described backlight 400 is installed on described base plate 220, and described diffuser plate 600 is installed on described side plate 240 in the top of described backlight 400.Preferably, on described base plate 220, Shanghai is provided with end reflector plate (not shown), the light that described backlight 400 sends directly or after launching via reflector plate of the described end carries out described diffuser plate 600, and propagates in diffuser plate, and pointolite is converted to area source.
Further, described down straight aphototropism mode set also comprises and is located at the optical diaphragm group 650 of described diffuser plate 600 away from described backlight 400 side.Described optical diaphragm group 650 comprises diffusion barrier, brightness enhancement film etc., effective improving optical grade.
With reference to Fig. 4, the present invention also provides a kind of display device, described display device comprises backlight module 500 and is located at the display panel 700 above described backlight module 500, described backlight module 500 comprises earlier figures 1 to technical schemes all in embodiment illustrated in fig. 3, its detailed construction can refer to previous embodiment, does not repeat at this.
Further, with reference to Fig. 5, in the present embodiment, described display panel 700 is display panels, and described display panels comprises the colored filter substrate 740 that thin film transistor base plate 720 and described thin film transistor base plate 720 are oppositely arranged and the liquid crystal layer 760 be located between described thin film transistor base plate 720 and described colored filter substrate 740.Described backlight module 500 provides area source to described liquid crystal panel, is selected light by polaroid (sign) and liquid crystal molecule, realizes image display.
In sum, down straight aphototropism mode set of the present invention and display device, blue LED lamp sends blue light, white light is formed after being arranged at the red green fluorescence bisque mixed light on lens, be supplied to described diffuser plate, the colourity uneven phenomenon formed on diffuser plate after effectively avoiding existing white light LEDs that dispersion occurs after conventional lenses, can promote the colour gamut of liquid crystal module after liquid crystal panel of simultaneously arranging in pairs or groups.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (9)

1. a down straight aphototropism mode set, it is characterized in that, described down straight aphototropism mode set comprises backboard, the diffuser plate be located at the backlight in backboard and be located at above described backlight, described backlight comprises several LED lamp bar, each LED lamp bar comprises circuit board, fix and the several blue LED lamp be electrically connected on described circuit board and the lens be located at above described blue LED lamp, described lens are provided with red green fluorescence bisque away from the surface of described blue LED lamp, described blue LED lamp sends blue light, white light is formed after described red green fluorescence bisque mixed light, be supplied to described diffuser plate.
2. down straight aphototropism mode set as claimed in claim 1, it is characterized in that, described red green fluorescence bisque comprises red fluorescence powder, green emitting phosphor and epoxy resin or silica gel, and described red fluorescence powder, green emitting phosphor are evenly coated on the surface of described lens away from described blue LED lamp after mixing with epoxy resin or silica gel.
3. down straight aphototropism mode set as claimed in claim 1, it is characterized in that, described red green fluorescence bisque comprises red fluorescence powder, green emitting phosphor and polycarbonate, polymethylmethacrylate or glass, described red fluorescence powder, green emitting phosphor make by injection mo(u)lding the lens case matched with described lens with after polycarbonate, polymethylmethacrylate or glass Homogeneous phase mixing, and are installed on the side of blue LED lamp described in described lens.
4. down straight aphototropism mode set as claimed in claim 1, it is characterized in that, described blue LED lamp comprises blue light emitting chip.
5. down straight aphototropism mode set as claimed in claim 4, it is characterized in that, described blue light emitting chip is gallium nitride chip.
6. down straight aphototropism mode set as claimed in claim 1, it is characterized in that, described backboard comprises base plate and is connected to several side plates of described base portion peripheral, and described backlight is installed on described base plate, and described diffuser plate is installed on described side plate in the top of described backlight.
7. down straight aphototropism mode set as claimed in claim 1, it is characterized in that, described down straight aphototropism mode set also comprises is located at the optical diaphragm group of described diffuser plate away from described backlight side.
8. a display device, is characterized in that, described display device comprises backlight module and is located at the display panel above described backlight module, and described backlight module is the down straight aphototropism mode set described in any one of the claims 1 to 7.
9. display device as claimed in claim 8, it is characterized in that, described display panel is display panels, and described display panels comprises the colored filter substrate that thin film transistor base plate and described thin film transistor base plate are oppositely arranged and the liquid crystal layer be located between described thin film transistor base plate and described colored filter substrate.
CN201410617979.7A 2014-11-05 2014-11-05 Direct type backlight module and display device Pending CN104360537A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105425452A (en) * 2015-12-03 2016-03-23 青岛海信电器股份有限公司 Backlight module and display device
CN106681056A (en) * 2017-03-20 2017-05-17 青岛骐骥光电科技有限公司 Backlight module containing quantum-dot diffusion plate
CN107238969A (en) * 2017-05-24 2017-10-10 深圳Tcl新技术有限公司 A kind of LED/light source backlight module and display device
CN107246563A (en) * 2017-07-26 2017-10-13 合肥惠科金扬科技有限公司 Quantum dot backlight module, display and quantum dot lens making methods
CN110501842A (en) * 2018-05-18 2019-11-26 深圳Tcl新技术有限公司 A kind of backlight module and display device
CN111208672A (en) * 2020-01-15 2020-05-29 安徽康佳电子有限公司 Direct type module with double-layer light mixing cavity
CN111240086A (en) * 2018-11-28 2020-06-05 深圳Tcl新技术有限公司 LED lens subassembly is shaded
CN111240093A (en) * 2020-03-04 2020-06-05 深圳创维-Rgb电子有限公司 Light source module, lamp strip and TV set
CN112485945A (en) * 2020-11-27 2021-03-12 广东长虹电子有限公司 Novel quantum dot structure backlight module for liquid crystal display television

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007080863A (en) * 2005-09-09 2007-03-29 Matsushita Electric Works Ltd Light-emitting device
JP2011009052A (en) * 2009-06-25 2011-01-13 Panasonic Corp Surface light source, and liquid crystal display device
CN201902859U (en) * 2010-11-12 2011-07-20 王钧迪 White light LED lamp
CN102237351A (en) * 2010-04-30 2011-11-09 三星Led株式会社 Light emitting device package, light source module, backlight unit, and illumination apparatus
CN103887415A (en) * 2014-03-14 2014-06-25 深圳市联腾科技有限公司 Long-afterglow LED illuminant, outdoor LED display screen and afterglow display and control method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007080863A (en) * 2005-09-09 2007-03-29 Matsushita Electric Works Ltd Light-emitting device
JP2011009052A (en) * 2009-06-25 2011-01-13 Panasonic Corp Surface light source, and liquid crystal display device
CN102237351A (en) * 2010-04-30 2011-11-09 三星Led株式会社 Light emitting device package, light source module, backlight unit, and illumination apparatus
CN201902859U (en) * 2010-11-12 2011-07-20 王钧迪 White light LED lamp
CN103887415A (en) * 2014-03-14 2014-06-25 深圳市联腾科技有限公司 Long-afterglow LED illuminant, outdoor LED display screen and afterglow display and control method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105425452A (en) * 2015-12-03 2016-03-23 青岛海信电器股份有限公司 Backlight module and display device
CN106681056A (en) * 2017-03-20 2017-05-17 青岛骐骥光电科技有限公司 Backlight module containing quantum-dot diffusion plate
CN107238969A (en) * 2017-05-24 2017-10-10 深圳Tcl新技术有限公司 A kind of LED/light source backlight module and display device
CN107238969B (en) * 2017-05-24 2020-12-29 深圳Tcl新技术有限公司 LED light source backlight module and display device
CN107246563A (en) * 2017-07-26 2017-10-13 合肥惠科金扬科技有限公司 Quantum dot backlight module, display and quantum dot lens making methods
CN110501842A (en) * 2018-05-18 2019-11-26 深圳Tcl新技术有限公司 A kind of backlight module and display device
CN111240086A (en) * 2018-11-28 2020-06-05 深圳Tcl新技术有限公司 LED lens subassembly is shaded
CN111208672A (en) * 2020-01-15 2020-05-29 安徽康佳电子有限公司 Direct type module with double-layer light mixing cavity
CN111240093A (en) * 2020-03-04 2020-06-05 深圳创维-Rgb电子有限公司 Light source module, lamp strip and TV set
CN112485945A (en) * 2020-11-27 2021-03-12 广东长虹电子有限公司 Novel quantum dot structure backlight module for liquid crystal display television

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Effective date of registration: 20160201

Address after: 518057 Guangdong city of Shenzhen province Nanshan District Gao Xin Road SKYWORTH building A block 13-16

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