CN103292246A - Optical diaphragm, backlight module and display device - Google Patents
Optical diaphragm, backlight module and display device Download PDFInfo
- Publication number
- CN103292246A CN103292246A CN2013102183623A CN201310218362A CN103292246A CN 103292246 A CN103292246 A CN 103292246A CN 2013102183623 A CN2013102183623 A CN 2013102183623A CN 201310218362 A CN201310218362 A CN 201310218362A CN 103292246 A CN103292246 A CN 103292246A
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- China
- Prior art keywords
- blooming piece
- micro
- light
- structural
- light source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means 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
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means 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
- G02B6/0051—Diffusing sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light 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
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means 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
- G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
Abstract
The invention provides an optical diaphragm, a backlight module and a display device, and relates to the field of display technologies. The problem of uneven light emission due to light gathering at gaps between an existing optical diaphragm of an existing backlight module and a lamp strip in the prior art is solved. The optical diaphragm comprises an upper surface, a lower surface and a plurality of side surfaces. The side surfaces are positioned between the upper surface and the lower surface, and a plurality of micro-structures are at least arranged on the side surfaces which are close to a light source, and are used for deflecting, scattering and emitting light. The invention is applicable to designing and manufacturing display devices.
Description
Technical field
The present invention relates to the Display Technique field, relate in particular to a kind of blooming piece, module backlight and display unit.
Background technology
Existing LCD (Liquid Crystal Display, LCD) needs to realize Presentation Function by module backlight because liquid crystal itself is not luminous.
As shown in Figure 1, existing module backlight comprises lamp bar 10, light source 11, LGP 12 and various blooming piece 15 (comprising diffusion sheet 13 and two prismatic lenses 14), and wherein, light source 11 is arranged on the lamp bar 10.Light source 11 comprises a plurality of LED (Light) Emitting Diode, light emitting diode) spot light 111, as shown in Figure 2.The light that LED sends penetrates through repeatedly reflecting from the upper surface of LGP after the side of LGP enters LGP, through the diffusion sheet scattering, again by two-layer prismatic lens focus irradiation on display screen.
Because existing module backlight all is to be assembled by machine, consider various assembling factors, between blooming piece 15 and lamp bar 10, can there be the gap, as shown in Figure 1, the light that LED sends sends by this gap, and can not carry out scattering and converge as normal light, can cause the luminance of module backlight secretly uneven like this.
Summary of the invention
Embodiments of the invention provide a kind of blooming piece, module backlight and display unit, and the side of described blooming piece distance light source is provided with micro-structural, and light deflection scattering is sent, and improve the entire aphototropism mould uniformity of luminance.
For achieving the above object, embodiments of the invention adopt following technical scheme:
The embodiment of the invention provides a kind of blooming piece, comprising: upper surface, lower surface and a plurality of sides between upper surface and lower surface, wherein, the side near light source is provided with a plurality of micro-structurals at least, is used for light deflection scattering is sent.
Optionally, described micro-structural is miniature circular arc particle or prism.
Optionally, the size of described micro-structural is between 30-50 μ m.
Optionally, two adjacent micro-structurals link to each other.
Optionally, described blooming piece is prismatic lens or diffusion sheet.
The embodiment of the invention provides a kind of module backlight, comprising: light source and blooming piece, wherein, the arbitrary described blooming piece that described blooming piece provides for the embodiment of the invention.
Optionally, described blooming piece comprises prismatic lens and diffusion sheet.
Optionally, described light source comprises a plurality of LED spot lights, and at least one micro-structural on the corresponding blooming piece of each LED spot light.
The embodiment of the invention provides a kind of display unit, comprises the arbitrary described module backlight that the embodiment of the invention provides.
A kind of blooming piece that the embodiment of the invention provides, module backlight and display unit, described blooming piece is provided with a plurality of micro-structurals near the side of light source, the light that can penetrate from the gap by described micro-structural deflects, light after the part deflection is by repeatedly refraction, reenter LGP, diffusion sheet and prismatic lens, send through diffusion sheet scattering and prismatic lens gathering again, realize even bright dipping.And by described micro-structural with after the light deflection, between two LED spot lights light intensity and each LED spot light over against the light intensity of position close, and then can improve the uniformity of luminance of entire aphototropism mould.
Description of drawings
Fig. 1 is the schematic diagram of module backlight of the prior art;
Fig. 2 is the plan structure schematic diagram of module backlight in the prior art;
A kind of blooming piece schematic diagram that Fig. 3 provides for the embodiment of the invention;
Fig. 4 is the main TV structure schematic diagram of blooming piece shown in Figure 3;
Fig. 5 is the plan structure schematic diagram of blooming piece shown in Figure 3;
The schematic diagram of a kind of module backlight that Fig. 6 provides for the embodiment of the invention;
The plan structure schematic diagram of a kind of module backlight that Fig. 7 provides for the embodiment of the invention;
Reference numeral:
10-lamp bar; The 11-light source; The 111-LED spot light; The 12-LGP; The 13-diffusion sheet; The 14-prismatic lens; The 15-blooming piece; The miniature circular arc particle of 20-.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.
The invention provides a kind of blooming piece, as shown in Figure 3, comprising: upper surface, lower surface and a plurality of sides between upper surface and lower surface, wherein, the side near light source is provided with a plurality of micro-structurals at least, is used for light deflection scattering is sent.
Need to prove that existing blooming piece comprises diffusion sheet and prismatic lens, it is generally rectangular configuration, and it comprises two sides on corresponding two long limits and two sides of corresponding two minor faces in four sides of rectangle.Generally with the light source of the side of corresponding minor face and module backlight over against.After above-mentioned side near light source referred to that module assembling backlight is finished, with the side of light source over against close light source, the one side relative with the side of close light source was the side away from light source.Blooming piece provided by the invention is mainly used in module backlight, then over against a side near backlight a plurality of micro-structurals is being set with described backlight at least in the described blooming piece, is used for making light deflection scattering send.Certainly, also described micro-structural can be set in the side away from described light source, two relative sides of blooming piece are provided with micro-structural like this, then can will be provided with the either side of micro-structural near described light source when described blooming piece is installed.
In addition, because LED has certain lighting angle, light intensity is very big in this lighting angle, as shown in Figure 2, with LED over against the luminous intensity of position big, but little at two LED position in the middle light intensities, if do not spread and converge, bright dark inequality can appear in the luminous of module backlight, and then influences image quality, and the visual effect of end product is affected.In the embodiment of the invention, as shown in Figure 7, the light that the LED spot light sends is through the scattering of micro-structural deflection light, entire aphototropism mould is luminous evenly, namely between two LED spot lights light intensity and each LED spot light over against the light intensity of position close, and then can improve the uniformity of luminance of entire aphototropism mould.
A kind of blooming piece that the embodiment of the invention provides, described blooming piece is provided with a plurality of micro-structurals near the side of light source, by described micro-structural light is deflected, and the light of part after micro-structural deflection is absorbed by other assemblies on every side; Light after the part deflection reenters LGP, diffusion sheet and prismatic lens by repeatedly refraction in addition, sends through diffusion sheet scattering and prismatic lens gathering again, realizes even bright dipping.And by described micro-structural with after the light deflection, between two LED spot lights light intensity and each LED spot light over against the light intensity of position close, and then can improve the uniformity of luminance of entire aphototropism mould.
Optionally, described micro-structural is evenly arranged on the side of blooming piece.Micro-structural is evenly arranged, and then the outside scattering of light that die set light source backlight can be sent is more even.
Optionally, described micro-structural is miniature circular arc particle or prism.As shown in Figure 3-Figure 5, be that miniature circular arc particle is that example is elaborated with described micro-structural all in the embodiment of the invention.
Optionally, the size of described micro-structural is between 30-50 μ m.
Optionally, two adjacent micro-structurals link to each other.A plurality of micro-structurals link to each other, and then micro-structural is arranged closely, can be more even through the light of micro-structural scattering.
Optionally, described blooming piece is prismatic lens or diffusion sheet.In module backlight, blooming piece mainly comprises diffusion sheet and two prismatic lenses, and in the embodiment of the invention, described blooming piece can also can be prismatic lens for diffusion sheet.As shown in Figure 3-Figure 5, be that diffusion sheet is that example is elaborated with described blooming piece.
The embodiment of the invention provides a kind of module backlight, as shown in Figure 6, comprising: light source and blooming piece, wherein, the arbitrary described blooming piece that described blooming piece provides for the embodiment of the invention.
Need to prove that as shown in Figure 6, the light source 11 of described module backlight is fixed on the lamp bar 10, and described light source 11 comprises a plurality of LED spot lights 111.The blooming piece of module backlight comprises diffusion sheet and prismatic lens, and then in the embodiment of the invention, described blooming piece can be that prismatic lens also can be diffusion sheet.And preferred, described blooming piece is prismatic lens and the diffusion sheet on the module backlight.Be that the prismatic lens of module backlight and diffusion sheet all are being provided with micro-structural with the close side of light source.Described micro-structural can reflect away the light that does not enter diffusion sheet and prismatic lens of LGP emission, and the light of part after micro-structural reflection deflection is absorbed by other assemblies on every side; Light after the part deflection reenters LGP, diffusion sheet and prismatic lens by repeatedly refraction in addition, sends through diffusion sheet scattering and prismatic lens gathering again, realizes even bright dipping.And the light that the LED spot light sends is through the scattering of micro-structural deflection light, entire aphototropism mould is luminous evenly, namely between two LED spot lights light intensity and each LED spot light over against the light intensity of position close, and then can so that entire aphototropism mould luminous evenly.
Optionally, as shown in Figure 7, described light source comprises a plurality of LED spot lights 111, and at least one micro-structural on the corresponding blooming piece of each LED spot light.Each LED spot light all can make light that the LED spot light sends to extrinsic deflection by described micro-structural like this, and then makes the light intensity of the position between two LED spot lights increase, and the bright dipping of entire aphototropism mould is even.
The invention provides a kind of display unit, comprise the arbitrary described module backlight that the embodiment of the invention provides.Described display unit can be display devices such as LCD, Electronic Paper and any product or the parts with Presentation Function such as TV, digital camera, mobile phone, panel computer that comprise these display devices.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (10)
1. blooming piece comprises: upper surface, lower surface and a plurality of sides between upper surface and lower surface, it is characterized in that the side near light source is provided with a plurality of micro-structurals at least, and be used for light deflection scattering is sent.
2. blooming piece according to claim 1 is characterized in that, described a plurality of micro-structurals are evenly arranged on the side of described blooming piece.
3. blooming piece according to claim 1 is characterized in that, described micro-structural is miniature circular arc particle or prism.
4. blooming piece according to claim 1 is characterized in that, the size of described micro-structural is between 30-50 μ m.
5. blooming piece according to claim 1 is characterized in that, two adjacent micro-structurals link to each other.
6. blooming piece according to claim 1 is characterized in that, described blooming piece is prismatic lens or diffusion sheet.
7. module backlight, comprising: light source and blooming piece is characterized in that described blooming piece is claim 1) 6 each described blooming pieces.
8. module backlight according to claim 7 is characterized in that, described blooming piece comprises prismatic lens and diffusion sheet.
9. module backlight according to claim 7 is characterized in that, described light source comprises a plurality of LED spot lights, and at least one micro-structural on the corresponding blooming piece of each LED spot light.
10. a display unit is characterized in that, comprises each described module backlight of claim 7-9.
Priority Applications (2)
| 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 |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103292246A true CN103292246A (en) | 2013-09-11 |
| CN103292246B CN103292246B (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310218362.3A Active CN103292246B (en) | 2013-06-04 | 2013-06-04 | A kind of blooming piece, backlight module and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103292246B (en) |
| WO (1) | WO2014194614A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014194614A1 (en) * | 2013-06-04 | 2014-12-11 | 北京京东方光电科技有限公司 | Optical diaphragm, backlight module, and display apparatus |
| 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 |
| US11372283B1 (en) | 2021-03-11 | 2022-06-28 | Radiant Opto-Electronics Corporation | 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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- 2013-11-29 WO PCT/CN2013/088160 patent/WO2014194614A1/en active Application Filing
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| CN102791811A (en) * | 2010-02-26 | 2012-11-21 | 斑马株式会社 | W/O-type emulsion ink composition for writing utensil and writing utensil |
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| WO2014194614A1 (en) * | 2013-06-04 | 2014-12-11 | 北京京东方光电科技有限公司 | Optical diaphragm, backlight module, and display apparatus |
| 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 |
| US11372283B1 (en) | 2021-03-11 | 2022-06-28 | Radiant Opto-Electronics Corporation | Backlight module and display device |
| TWI773182B (en) * | 2021-03-11 | 2022-08-01 | 瑞儀光電股份有限公司 | Backlight module and display device |
| US11487155B2 (en) | 2021-03-11 | 2022-11-01 | Radiant Opto-Electronics Corporation | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014194614A1 (en) | 2014-12-11 |
| CN103292246B (en) | 2016-08-24 |
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