CN103292246B - A kind of blooming piece, backlight module and display device - Google Patents

A kind of blooming piece, backlight module and display device Download PDF

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Publication number
CN103292246B
CN103292246B CN201310218362.3A CN201310218362A CN103292246B CN 103292246 B CN103292246 B CN 103292246B CN 201310218362 A CN201310218362 A CN 201310218362A CN 103292246 B CN103292246 B CN 103292246B
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CN
China
Prior art keywords
blooming piece
backlight module
light source
light
micro structure
Prior art date
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Application number
CN201310218362.3A
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Chinese (zh)
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CN103292246A (en
Inventor
翟明
金亨奎
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Beijing BOE Optoelectronics Technology Co Ltd
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Beijing BOE Optoelectronics Technology Co Ltd
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Priority to CN201310218362.3A priority Critical patent/CN103292246B/en
Publication of CN103292246A publication Critical patent/CN103292246A/en
Priority to PCT/CN2013/088160 priority patent/WO2014194614A1/en
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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051Diffusing sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016Grooves, prisms, gratings, scattering particles or rough surfaces

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

The invention provides a kind of blooming piece, backlight module and display device, relate to Display Technique field, solve light at the gap between the blooming piece of backlight module in prior art and lamp bar and assemble the problem going out light inequality caused.A kind of blooming piece, including: upper surface, lower surface and the multiple sides between upper and lower surface, wherein, at least on the side of light source, it is being provided with multiple micro structure, is being used for making light deflection scattering send.The present invention is applicable to design and the manufacture of display device.

Description

A kind of blooming piece, backlight module and display device
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of blooming piece, backlight module and display device.
Background technology
Existing LCD (Liquid Crystal Display, liquid crystal display) does not sends out due to liquid crystal itself Light, needs to realize display function by backlight module.
As it is shown in figure 1, existing backlight module include lamp bar 10, light source 11, light guide plate 12 and Various blooming pieces 15 (including diffusion sheet 13 and two prismatic lenses 14), wherein, light source 11 is arranged On lamp bar 10.Light source 11 includes multiple LED (Light) Emitting Diode, light-emitting diodes Pipe) point source 111, as shown in Figure 2.The light that LED sends from the side of light guide plate enter light guide plate it After, penetrate from the upper surface of light guide plate through multiple reflections, scatter through diffusion sheet, then pass through two-layer Prismatic lens focus irradiation is on a display screen.
Owing to existing backlight module is all to be assembled by machine, it is contemplated that various assembling factors, at optics Gap can be there is, as it is shown in figure 1, the light that LED sends is by around here between diaphragm 15 and lamp bar 10 Gap sends, and without being scattered as normal light and converge, so can cause the luminescence of backlight module Brightness unevenness.
Summary of the invention
Embodiments of the invention provide a kind of blooming piece, backlight module and display device, described blooming piece The side of distance light source is provided with micro structure, light deflection scattering can be made to send, improve whole backlight module Uniformity of luminance.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that
Embodiments provide a kind of blooming piece, including: upper surface, lower surface and be positioned at upper table Multiple sides between face and lower surface, wherein, are at least being provided with multiple micro-knot on the side of light source Structure, is used for making light deflection scattering send.
Optionally, described micro structure is miniature circular arc granule or prism.
Optionally, the size of described micro structure is between 30-50 μm.
Optionally, two adjacent micro structures are connected.
Optionally, described blooming piece is prismatic lens or diffusion sheet.
Embodiments provide a kind of backlight module, including: light source and blooming piece, wherein, institute State arbitrary described blooming piece that blooming piece provides for the embodiment of the present invention.
Optionally, described blooming piece includes prismatic lens and diffusion sheet.
Optionally, described light source includes multiple LED point light source, and each LED point light source correspondence blooming At least one micro structure on sheet.
Embodiments provide a kind of display device, including the embodiment of the present invention provide arbitrary described Backlight module.
A kind of blooming piece, backlight module and the display device that the embodiment of the present invention provides, described blooming piece It is being provided with multiple micro structure, the light that can be penetrated from gap by described micro structure on the side of light source Deflect, partially deflected after light by repeatedly reflecting, reenter light guide plate, diffusion sheet and prism Sheet, again assembles through diffusion sheet scattering and prismatic lens and sends, it is achieved uniformly go out light.And by described micro-knot After light is deflected by structure, between two LED point light source the intensity of light and each LED point light source just to position The similar intensity of light, and then the uniformity of luminance of whole backlight module can be improved.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of backlight module of the prior art;
Fig. 2 is the plan structure schematic diagram of backlight module in prior art;
A kind of blooming piece schematic diagram that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 is the main TV structure schematic diagram of the blooming piece shown in Fig. 3;
Fig. 5 is the plan structure schematic diagram of the blooming piece shown in Fig. 3;
The schematic diagram of a kind of backlight module that Fig. 6 provides for the embodiment of the present invention;
The plan structure schematic diagram of a kind of backlight module that Fig. 7 provides for the embodiment of the present invention;
Reference:
10-lamp bar;11-light source;111-LED point source;12-light guide plate;13-diffusion sheet;14-prismatic lens; 15-blooming piece;20-miniature circular arc granule.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than Whole embodiments.
The invention provides a kind of blooming piece, as it is shown on figure 3, include: upper surface, lower surface and position Multiple sides between upper and lower surface, wherein, are at least provided with many on the side of close light source Individual micro structure, is used for making light deflection scattering send.
It should be noted that existing blooming piece, including diffusion sheet and prismatic lens, it is generally rectangular cross-section Structure, and they are in four sides of rectangle, including two sides and the correspondence two on corresponding two long limits Two sides of minor face.The typically side by corresponding minor face is the most right with the light source of backlight module.Above-mentioned near light After the side in source refers to that backlight module is completed, with light source just to the side near light source, with close light source The relative one side in side be the side away from light source.The blooming piece that the present invention provides is mainly used in backlight mould Group, is at least just being arranged on a side of backlight with described backlight in the most described blooming piece Multiple micro structures, are used for so that light deflection scattering sends.It is of course also possible in the side away from described light source Described micro structure is set, so on relative two side of blooming piece, is provided with micro structure, then in peace The either side of micro structure can will be provided with near described light source when filling described blooming piece.
Further, since LED has certain lighting angle, in this lighting angle, light intensity is very big, as Shown in Fig. 2, with LED just to the light intensity of position big, but two LED positions in the middle The intensity of light is little, if not being diffused and converging, the luminescence of backlight module there will be brightness unevenness, And then affecting image quality, the visual effect of end product is affected.In the embodiment of the present invention, such as figure Shown in 7, the light that LED point light source sends is through micro structure deflection light scattering, and whole backlight module is luminous uniformly, Between i.e. two LED point light source the intensity of light and each LED point light source just to the similar intensity of light of position, And then the uniformity of luminance of whole backlight module can be improved.
A kind of blooming piece that the embodiment of the present invention provides, described blooming piece is setting on the side of light source Being equipped with multiple micro structure, light can be made to deflect by described micro structure, part is after micro structure deflects Light is absorbed by other assemblies of surrounding;Light after the most partially deflected, by repeatedly reflecting, reenters leaded light Plate, diffusion sheet and prismatic lens, again assemble through diffusion sheet scattering and prismatic lens and send, it is achieved uniformly go out Light.And after light being deflected by described micro structure, the intensity of light and each LED between two LED point light source Point source just to the similar intensity of light of position, and then can improve whole backlight module luminous uniformly Property.
Optionally, described micro structure is uniformly arranged on the side of blooming piece.Micro structure is uniformly arranged, then Can outwards be scattered by the light that backlight module light source sends is more uniform.
Optionally, described micro structure is miniature circular arc granule or prism.As shown in Figure 3-Figure 5, the present invention is real Execute in example is all to be described in detail as a example by miniature circular arc granule by described micro structure.
Optionally, the size of described micro structure is between 30-50 μm.
Optionally, two adjacent micro structures are connected.Multiple micro structures are connected, then micro structure arrangement is closely, Can be more uniform through the light of microstructures scatters.
Optionally, described blooming piece is prismatic lens or diffusion sheet.In backlight module, blooming piece is main Including diffusion sheet and two prismatic lenses, in the embodiment of the present invention, described blooming piece can be diffusion sheet also It can be prismatic lens.As shown in Figure 3-Figure 5, it is described in detail as a example by described blooming piece is as diffusion sheet.
Embodiments provide a kind of backlight module, as shown in Figure 6, including: light source and blooming Sheet, wherein, arbitrary described blooming piece that described blooming piece provides for the embodiment of the present invention.
It should be noted that as shown in Figure 6, the light source 11 of described backlight module is fixed on lamp bar 10, And described light source 11 includes multiple LED point light source 111.The blooming piece of backlight module include diffusion sheet and Prismatic lens, then in the embodiment of the present invention, described blooming piece can be prismatic lens can also be diffusion sheet.And Preferably, described blooming piece is the prismatic lens on backlight module and diffusion sheet.The i.e. prism of backlight module Sheet and diffusion sheet are all provided with micro structure in the side close with light source.Described micro structure can be by light guide plate The luminous reflectance being introduced into diffusion sheet and prismatic lens launched is gone out, and part is after micro structure reflection deflection Light is absorbed by other assemblies of surrounding;Light after the most partially deflected, by repeatedly reflecting, reenters leaded light Plate, diffusion sheet and prismatic lens, again assemble through diffusion sheet scattering and prismatic lens and send, it is achieved uniformly go out Light.And the light that LED point light source sends is through micro structure deflection light scattering, whole backlight module is luminous uniformly, Between i.e. two LED point light source the intensity of light and each LED point light source just to the similar intensity of light of position, And then so that the luminescence of whole backlight module is uniform.
Optionally, as it is shown in fig. 7, described light source includes multiple LED point light source 111, and each LED point At least one micro structure on light source correspondence blooming piece.So each LED point light source all can pass through institute State the light that micro structure makes LED point light source send to be deflected outward by, and then make between two LED point light source The intensity of the light of position increases, the uniform in light emission of whole backlight module.
The invention provides a kind of display device, the arbitrary described backlight mould provided including the embodiment of the present invention Group.Described display device can be the display device such as liquid crystal display, Electronic Paper and include these display Any product with display function or the parts such as the TV of part, digital camera, mobile phone, panel computer.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to This, any those familiar with the art, in the technical scope that the invention discloses, can readily occur in Change or replacement, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention Should be as the criterion with described scope of the claims.

Claims (9)

1. a blooming piece, including: upper surface, lower surface and between upper and lower surface Multiple sides, it is characterised in that be at least provided with multiple micro structure on the side of light source, described micro- Structure is miniature circular arc granule or prism, and the light for making light source send is deflected outward by scattering and sends.
Blooming piece the most according to claim 1, it is characterised in that the plurality of micro structure is described Uniformly arrange on the side of blooming piece.
Blooming piece the most according to claim 1, it is characterised in that the size of described micro structure is at 30-50 Between μm.
Blooming piece the most according to claim 1, it is characterised in that two adjacent micro structures are connected.
Blooming piece the most according to claim 1, it is characterised in that described blooming piece is prismatic lens Or diffusion sheet.
6. a backlight module, including: light source and blooming piece, it is characterised in that described blooming piece For the blooming piece described in any one of claim 1-5.
Backlight module the most according to claim 6, it is characterised in that described blooming piece includes prism Sheet and diffusion sheet.
Backlight module the most according to claim 6, it is characterised in that described light source includes multiple LED At least one micro structure on point source, and each LED point light source correspondence blooming piece.
9. a display device, it is characterised in that include the backlight module described in any one of claim 6-8.
CN201310218362.3A 2013-06-04 2013-06-04 A kind of blooming piece, backlight module and display device Active CN103292246B (en)

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Application Number Priority Date Filing Date Title
CN201310218362.3A CN103292246B (en) 2013-06-04 2013-06-04 A kind of blooming piece, backlight module and display device
PCT/CN2013/088160 WO2014194614A1 (en) 2013-06-04 2013-11-29 Optical diaphragm, backlight module, and display apparatus

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Application Number Priority Date Filing Date Title
CN201310218362.3A CN103292246B (en) 2013-06-04 2013-06-04 A kind of blooming piece, backlight module and display device

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CN103292246B true CN103292246B (en) 2016-08-24

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CN103292246B (en) * 2013-06-04 2016-08-24 北京京东方光电科技有限公司 A kind of blooming piece, backlight module and display device
CN105278028A (en) * 2014-06-20 2016-01-27 群创光电股份有限公司 Light guide plate and display device using light guide plate
TWI773182B (en) 2021-03-11 2022-08-01 瑞儀光電股份有限公司 Backlight module and display device
TWI799306B (en) * 2021-03-11 2023-04-11 瑞儀光電股份有限公司 Backlight module and display device

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CN101295047A (en) * 2008-06-27 2008-10-29 长兴化学工业股份有限公司 Optical film
CN102661574A (en) * 2012-04-28 2012-09-12 深圳市华星光电技术有限公司 Light guide plate and backlight mould provided with same
CN102878525A (en) * 2012-09-21 2013-01-16 北京京东方光电科技有限公司 Prism film, side-light type backlight module and liquid crystal display device

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CN103292246A (en) 2013-09-11
WO2014194614A1 (en) 2014-12-11

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