CN104110649A - Diffusion plate and backlight module - Google Patents
Diffusion plate and backlight module Download PDFInfo
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- CN104110649A CN104110649A CN201310135281.7A CN201310135281A CN104110649A CN 104110649 A CN104110649 A CN 104110649A CN 201310135281 A CN201310135281 A CN 201310135281A CN 104110649 A CN104110649 A CN 104110649A
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- diffuser plate
- millimeter
- exiting surface
- triangular prism
- prism shaped
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Abstract
The invention relates to a diffusion plate comprising a body, a prism microstructure and a diffusion microstructure. The body is provided with an incident surface and an emergent surface which are opposite. The prism microstructure is disposed on the emergent surface and composed of multiple parallel triangular-prism-shaped protrusions, and the diffusion microstructure is located on the incident surface and composed of multiple parallel semi-cylindrical protrusions. The invention further relates to a backlight module with the diffusion plate.
Description
Technical field
The present invention relates to diffuser plate and backlight module, relate in particular to a kind of diffuser plate for down straight aphototropism mode set and there is the backlight module of this diffuser plate.
Background technology
Backlight module, as a kind of light source module, is often the electronic installation illuminations such as instrument, display unit.A kind of typical down straight aphototropism mode set comprises a plurality of light sources and the diffuser plate relative with the plurality of light source.The two-layer composite of common diffuser plate for being formed by being coated with and passing through polymerisation combination by printing opacity body and liquid state diffusion film.The common array arrangement of light source of backlight module is in the below of diffuser plate.Because the elongated size of backlight module is not square; like this; a plurality of light sources conventionally can exist arranging of light source inhomogeneous in the process of arranging in the length direction of backlight module or width, and cause occurring blanking bar, thereby make the bright dipping of light source module inhomogeneous.
Summary of the invention
In view of this, be necessary to provide a kind of diffuser plate and backlight module that can overcome the problems referred to above.
A kind of diffuser plate, it comprises a body, described body has relative incidence surface and exiting surface, described draw together fall apart also comprise prism microstructure and diffusion micro-structural, described micro-prism structure is on described exiting surface, described micro-prism structure is a plurality of triangular prism shaped projections that be arranged in parallel, and described diffusion micro-structural is positioned at described incidence surface, and described diffusion micro-structural is a plurality of half round post projections that are arranged in parallel.
A backlight module, it comprises described diffuser plate and a plurality of light source, described light source is relative with the incidence surface of described diffuser plate.
With respect to prior art, during light transmission diffuser plate that the light source in the technical program sends, first be diffused micro-structural diffusion, then by the light diffusion particle in body, spread, then through prism microstructure optimization,, during light transmission diffuser plate that light source sends through twice diffusion and be optimized, thereby can be so that stronger through the diffusivity of the light of diffuser plate, more even through the light of diffuser plate, and then it is more even to make to have the light that the backlight module of this diffuser plate sends.
Accompanying drawing explanation
Fig. 1 is the backlight module generalized section that first embodiment of the invention provides.
Fig. 2 is the generalized section of the backlight module other direction of Fig. 1.
Fig. 3 is the schematic perspective view of the diffuser plate of the backlight module in Fig. 1.
Main element symbol description
| Backlight module | 100 |
| Diffuser plate | 10 |
| Light source | 20 |
| Reflector plate | 30 |
| Body | 11 |
| Incidence surface | 110 |
| Exiting surface | 112 |
| Light diffusion particle | 101 |
| Prism microstructure | 12 |
| Triangular prism shaped projection | 121 |
| Diffusion micro-structural | 13 |
| Half-cylindrical projection | 131 |
The following specific embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
The specific embodiment
Refer to Fig. 1, Fig. 2 and Fig. 3, the backlight module 100 that first embodiment of the invention provides comprises a diffuser plate 10, a plurality of light source 20 and a reflector plate 30.
This diffuser plate 10 is located at the top of described a plurality of light source 20, that is to say, this diffuser plate 10 is relative with the plurality of light source 20.Described diffuser plate 10 comprises body 11 and is formed at the prism microstructure 12 of body 11 1 sides and is formed at the diffusion micro-structural 13 of the opposite side that body 11 is relative.
Described body 11 is made by light transmissive material, and it has relative incidence surface 110 and exiting surface 112.The material of described body 11 can be two kinds or more of the formed mixture in Merlon (PC), polymethyl methacrylate (PMMA), methyl methacrylate, styrene copolymerized compound (MS), PET (PETG), polystyrene (PS) or above-mentioned material.In described body 11, be dispersed with a plurality of smooth diffusion particles 101.The plurality of smooth diffusion particle 101 is for spreading the light that enters body 11 from incidence surface 110.The material of the plurality of smooth diffusion particle 101 can for two kinds in silicon, silica, titanium dioxide, methyl-propyl acid methyl esters, polymethyl methacrylate (PMMA), styrene copolymerized compound (MS), polystyrene (PS) or above-mentioned material or more in the mixture that forms.
Described prism microstructure 12 is located at described exiting surface 112, for to being optimized from the light of exiting surface 112 outgoing, to strengthen the scattering efficiency of described diffuser plate 10.In present embodiment, described prism microstructure 12 for a plurality of be arranged parallel to each other triangular prism shaped protruding 121.A described triangular prism shaped side and exiting surface 112 coincide.A plurality of triangular prism shaped shapes of protruding 121 are identical, and the distance between adjacent two triangular prism shaped protruding 121 equates.Particularly, described triangular prism shaped protruding 121 cross section is isosceles triangle, and the distance H between its summit away from exiting surface 112 and exiting surface 112 is about 0.05 millimeter to 0.2 millimeter, is preferably 0.1 millimeter.Away from the right length of side L of the drift angle of exiting surface 112, it is 0.5 millimeter to 0.7 millimeter.The length of side that is positioned at exiting surface 112 is 0.5 millimeter to 0.7 millimeter, is preferably 0.6 millimeter.Adjacent two triangular prism shaped protruding 121 distance D between exiting surface 112 are 2.5 millimeters to 3.5 millimeters, are preferably 3 millimeters.
Described diffusion micro-structural 13 is formed at diffuser plate 10 towards a side of light source 20.Described diffusion micro-structural 13 is arranged in parallel and interconnective half-cylindrical projection 131 for a plurality of.In the present embodiment, interconnective semi-cylinder surface forms described incidence surface 110.The cross section of described half-cylindrical projection 131 is semicircle, and described semicircular radius R is 0.4 millimeter to 0.6 millimeter, is preferably 0.5 millimeter.The radius of a plurality of half-cylindrical projections 131 equates.Two adjacent half-cylindrical projections 131 interconnect.
In the present embodiment, each length bearing of trend of triangular prism shaped protruding 121 is mutually vertical with the length bearing of trend of half-cylindrical projection 131.
Be understandable that, between two adjacent half-cylindrical projections 131, also can be separated from each other, two two adjacent half-cylindrical projections 131 interconnect by plane.
Described a plurality of light source 20 is between described diffuser plate 10 and reflector plate 30, for to described diffuser plate 10 emission of lights.
Described reflector plate 30 is located at the below of described a plurality of light source 20, that is, described reflector plate 30 is relative with described a plurality of light sources 20.Described reflector plate 30 for by the light reflection from light source 20 to diffuser plate 10, to improve the light utilization of light source 20.
Preferably, in the present embodiment, in order to prevent the molecular structure in the ultraviolet damage spreading plate 10 in light that light source 20 sends, occur be full of cracks or aetiolation, the incidence surface 110 of described diffuser plate 10 is provided with a ultra-violet absorber layer.Described ultra-violet absorber layer comprises the ultra-violet absorber that industry is conventional, and for example benzophenone series ultra-violet absorber, triazine are that ultra-violet absorber, BTA are that ultra-violet absorber, cyclic imide base ester are two kinds or two or more combinations of ultra-violet absorber or above-mentioned absorbent.
During light transmission diffuser plate 10 that the light source 20 in the technical program sends, first be diffused micro-structural 13 diffusions, then by the light diffusion particle 101 in body 11, spread, again through prism microstructure optimization, that is, during light transmission diffuser plate 10 that light source 20 sends through twice diffusion and be optimized, thereby can be so that stronger through the diffusivity of the light of diffuser plate 10, more even through the light of diffuser plate 10, and then it is more even to make to have the light that the backlight module 100 of this diffuser plate 10 sends.
Be understandable that, those skilled in the art also can do other and change in spirit of the present invention, within all should being included in the present invention's scope required for protection.
Claims (10)
1. a diffuser plate, it comprises a body, described body has relative incidence surface and exiting surface, it is characterized in that, described draw together fall apart also comprise prism microstructure and diffusion micro-structural, described micro-prism structure is on described exiting surface, described micro-prism structure is a plurality of triangular prism shaped projections that be arranged in parallel, described diffusion micro-structural is positioned at described incidence surface, and described diffusion micro-structural is a plurality of half round post projections that are arranged in parallel.
2. diffuser plate as claimed in claim 1, is characterized in that, is provided with a plurality of smooth diffusion particles in described body.
3. diffuser plate as claimed in claim 1, is characterized in that, the length direction of described triangular prism shaped projection is mutually vertical with the length direction of described half-cylindrical projection.
4. diffuser plate as claimed in claim 1, is characterized in that, the shape of a plurality of triangular prism shaped projections is identical, and the distance between two adjacent triangular prism shaped projections equates.
5. diffuser plate as claimed in claim 4, it is characterized in that, the cross section of described triangular prism shaped projection is isosceles triangle, its summit away from exiting surface and the distance between exiting surface are 0.05 millimeter to 0.2 millimeter, away from the right length of side of the drift angle of exiting surface, be 0.5 millimeter to 0.7 millimeter, the distance of two adjacent projections between exiting surface is 2.5 millimeters to 3.5 millimeters.
6. diffuser plate as claimed in claim 4, is characterized in that, described diffusion micro-structural is a plurality of being arranged in parallel and interconnective half-cylindrical projection, and interconnective semi-cylinder surface forms described incidence surface.
7. diffuser plate as claimed in claim 6, is characterized in that, the cross section of described half-cylindrical projection is semicircle, and described semicircular radius is 0.4 millimeter to 0.6 millimeter.
8. diffuser plate as claimed in claim 1, it is characterized in that, the shape of described a plurality of triangular prism shaped projections is identical, and the distance between two adjacent triangular prism shaped projections equates, the cross section of described triangular prism shaped projection is isosceles triangle, its summit away from exiting surface and the distance between exiting surface are 0.1 millimeter, away from the right length of side of the drift angle of exiting surface, it is 0.6 millimeter, the distance of two adjacent projections between exiting surface is 3 millimeters, the cross section of described half-cylindrical projection is semicircle, and described semicircular radius is 0.4 millimeter to 0.5 millimeter.
9. diffuser plate as claimed in claim 1, is characterized in that, described incidence surface is provided with a ultra-violet absorber layer.
10. a backlight module, it comprises that described light source is relative with the incidence surface of described diffuser plate as diffuser plate and a plurality of light source as described in arbitrary in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310135281.7A CN104110649A (en) | 2013-04-18 | 2013-04-18 | Diffusion plate and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310135281.7A CN104110649A (en) | 2013-04-18 | 2013-04-18 | Diffusion plate and backlight module |
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| Publication Number | Publication Date |
|---|---|
| CN104110649A true CN104110649A (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310135281.7A Pending CN104110649A (en) | 2013-04-18 | 2013-04-18 | Diffusion plate and backlight module |
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| CN (1) | CN104110649A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106647043A (en) * | 2016-12-08 | 2017-05-10 | 环球智达科技（北京）有限公司 | Backlight structure adopting aggregate type diffusion plate |
| CN108139512A (en) * | 2015-10-02 | 2018-06-08 | 迪睿合株式会社 | Diffuser plate, display device, projection arrangement and lighting device |
| CN109147562A (en) * | 2018-09-25 | 2019-01-04 | 京东方科技集团股份有限公司 | Display device and its control method |
| WO2020063569A1 (en) * | 2018-09-27 | 2020-04-02 | 欧普照明股份有限公司 | Diffusion plate and lamp having diffusion plate |
-
2013
- 2013-04-18 CN CN201310135281.7A patent/CN104110649A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108139512A (en) * | 2015-10-02 | 2018-06-08 | 迪睿合株式会社 | Diffuser plate, display device, projection arrangement and lighting device |
| US10859735B2 (en) | 2015-10-02 | 2020-12-08 | Dexerials Corporation | Diffuser plate, display device, projection device, and lighting device |
| CN108139512B (en) * | 2015-10-02 | 2021-10-08 | 迪睿合株式会社 | Diffusion plate, display device, projection device, and illumination device |
| CN106647043A (en) * | 2016-12-08 | 2017-05-10 | 环球智达科技（北京）有限公司 | Backlight structure adopting aggregate type diffusion plate |
| CN109147562A (en) * | 2018-09-25 | 2019-01-04 | 京东方科技集团股份有限公司 | Display device and its control method |
| WO2020063569A1 (en) * | 2018-09-27 | 2020-04-02 | 欧普照明股份有限公司 | Diffusion plate and lamp having diffusion plate |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141022 |