CN101644856A - Direct backlight module - Google Patents
Direct backlight module Download PDFInfo
- Publication number
- CN101644856A CN101644856A CN200810303364A CN200810303364A CN101644856A CN 101644856 A CN101644856 A CN 101644856A CN 200810303364 A CN200810303364 A CN 200810303364A CN 200810303364 A CN200810303364 A CN 200810303364A CN 101644856 A CN101644856 A CN 101644856A
- Authority
- CN
- China
- Prior art keywords
- diffuser plate
- strip
- optical sheet
- mode set
- 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
Links
Images
Landscapes
- Optical Elements Other Than Lenses (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention relates to a direct backlight module which comprises a frame, a plurality of light-emitting diodes, a diffusion plate and an optical plate, wherein the optical plate is arranged above the diffusion plate at intervals; the diffusion plate comprises a first surface and a second surface which is opposite to the first surface, and the second surface of the diffusion plate is close to thelight-emitting diodes; the optical plate comprises a transparent body which comprises a first surface and a second surface that is opposite to the first surface, and the second surface of the opticalplate is close to the light-emitting diodes; the first surface of the diffusion plate is a plane, and the diffusion plate comprises a plurality of long-strip V-shaped ridge structures which are formed at the second surface and extend along at least two different directions; and the optical plate comprises a plurality of parallel long-strip arc-shaped heaves which are formed on the first surface and a plurality of parallel long-strip arc-shaped grooves which are formed on the second surface. The direct-lighting backlight module has better exit ray uniformity and is suitable for thinned design.
Description
Technical field
The present invention relates to a kind of down straight aphototropism mode set, relate in particular to a kind of down straight aphototropism mode set that is applied to liquid crystal display.
Background technology
Liquid crystal indicator is widely used in the electronic products such as personal digital assistant, notebook computer, digital camera, mobile phone, LCD TV.But because liquid crystal indicator itself can not be luminous, so it need could produce Presentation Function by module backlight.
See also Fig. 1, a kind of down straight aphototropism mode set 100, it comprises framework 10, reflecting plate 12, a plurality of light emitting diode 14, a diffuser plate 16 and an a plurality of optical sheet 18.A plurality of light emitting diodes 14 are arranged on the base plate of framework 10, and a plurality of optical sheets 18 are covered on the opening part of framework 10.Diffuser plate 16 is arranged at intervals between light emitting diode 14 and a plurality of optical sheet 18, thereby will be divided into first and second diffusion space 19,20 in the framework 10.Diffuser plate 16 is made by the resin material that contains scattering particle.A plurality of optical sheets 18 comprise prismatic lens, diffusion sheet or polarization by refraction film.
During use, the light that is produced by a plurality of light emitting diodes 14 enters diffuser plate 16 after through first diffusion space 19, after diffuser plate 16 diffusions, light enters second diffusion space 20 and spreads, after passing through the diffusion or congregation of a plurality of optical sheets 18 at last, evenly outgoing in the certain viewing angles scope.
Though the light that sends from light emitting diode 14 is through repeatedly diffusion, but still be difficult to avoid the generation of light emitting diode 14 light source ghosts.In order to reduce the generation of light source ghost as far as possible, industry can increase the degree of depth of framework 10 usually, promptly increases the height of first and second diffusion space 19,20.Yet the degree of depth that increases framework will reduce the brightness of emergent light.If the quantity of corresponding increase light emitting diode 14, the consumed power in the time of can increasing production cost and use, and the degree of depth of increase framework 10 will make module 100 backlight be difficult to satisfy the slimming designing requirement.
Summary of the invention
In view of above-mentioned condition, be necessary to provide the module backlight of the low and thinner thickness of a kind of cost.
A kind of down straight aphototropism mode set, it comprises a framework, a plurality of light emitting diode, a diffuser plate and an optical sheet.A plurality of light emitting diodes are arranged on the base plate of framework, and diffuser plate is positioned at the light emitting diode top, and optical sheet is disposed on the top of diffuser plate.Diffuser plate comprises that first surface reaches and the first surface opposing second surface, and the second surface of diffuser plate is near light emitting diode.Optical sheet comprises a transparent bodies, and transparent bodies comprises that first surface reaches and the first surface opposing second surface, and the second surface of optical sheet is near light emitting diode.The first surface of diffuser plate is the plane, and diffuser plate comprises a plurality of strip V-type ridge structures of at least two the different directions extensions in edge that are formed at second surface, and is interlaced along a plurality of V-type ridge structures of different directions.Optical sheet comprises a plurality of strip arc convex that are parallel to each other that are formed at first surface, and a plurality of strip arc grooves that are parallel to each other that are formed at second surface, the bearing of trend of a plurality of strip arc groove bearing of trends and a plurality of strip arc convex intersects.
In view of the foregoing, the diffuser plate of module backlight comprises a plurality of V-type ridge structures of at least two the different directions extensions in edge that are formed at second surface, it can increase the light path of light in module backlight, strengthens the space diffusion effect of light, helps eliminating the light source ghost.Simultaneously, microstructure on the optical sheet makes emergent ray that further diffusion take place and assembles in specific angular field of view, thereby form brightness height and homogeneity area source preferably, and the mode of the degree of depth of quantity that need not be by increasing light emitting diode and framework promotes the brightness and the uniformity coefficient of emergent light, so the cost of above-mentioned module backlight is lower, and be applicable to the slimming design.
Description of drawings
Fig. 1 is a kind of diagrammatic cross-section of module backlight.
Fig. 2 is the diagrammatic cross-section of the module backlight of the embodiment of the invention one.
Fig. 3 is the stereographic map of the diffuser plate of module backlight shown in Figure 2.
Fig. 4 is the stereographic map of the optical sheet of Fig. 2 module backlight.
Fig. 5 is the cut-open view of optical sheet V-V direction shown in Figure 4.
Fig. 6 is the cut-open view of optical sheet VI-VI direction shown in Figure 4.
Fig. 7 is the stereographic map of the diffuser plate of the embodiment of the invention two.
Fig. 8 is the stereographic map of the optical sheet of the embodiment of the invention three.
Embodiment
Below in conjunction with drawings and Examples module backlight of the present invention is described in further detail.
See also Fig. 2, the down straight aphototropism mode set 200 of the embodiment of the invention one comprises a framework 22, a plurality of light emitting diode 24, diffuser plate 26, an optical sheet 28 and an a plurality of optical sheet 30.A plurality of light emitting diodes 24 are arranged on the base plate of framework 22.Diffuser plate 26 is located in the framework 22 and is positioned at the top of a plurality of light emitting diodes 24.Optical sheet 28 and a plurality of optical sheet 30 are covered on the opening part of framework 22 successively.The distance that optical sheet 28 is certain at interval with diffuser plate 26, thus a diffusion space 31 formed.
Please in the lump referring to Fig. 3, diffuser plate 26 is made by the transparent material that is dispersed with scattering particle 262.Diffuser plate 26 comprises first surface 264 and and first surface 264 opposing second surface 266.Second surface 266 is near a plurality of light emitting diodes 24.
The first surface 264 of diffuser plate 26 is a smooth surface.Diffuser plate 26 forms along first direction X at second surface 266
1The a plurality of first V-type ridge structures 268 that extend, along second direction X
2The a plurality of second V-type ridge structures 270 that extend, along third direction X
3A plurality of the 3rd V-type ridge structures 272 that extend and along the four directions to X
4A plurality of the 4th V-type ridge structures 274 that extend.Above-mentioned V-type ridge structure is interlaced.Along second direction X
2The a plurality of second V-type ridge structures 270 that extend with along the four directions to X
4A plurality of the 4th V-type ridge structures 272 that extend all pass through along first direction X
1The first V-type ridge structure 268 that extends with along third direction X
3Intersection point between the 3rd V-type ridge structure 272 that extends.Four direction X wherein
1, X
2, X
3And X
4Angle between adjacent two directions is 45 degree.The span of the drift angle of the vertical section of above-mentioned all V-type ridge structures be 80 degree to 100 degree, the equidirectional centre distance that between the adjacent V-type ridge structure can be 0.025 millimeter to 1 millimeter.In the present embodiment, four direction X
1, X
2, X
3And X
4Centre distance between the adjacent V-type ridge structure is respectively D
1, D
2, D
3With D
4, and
In addition, need to prove:, can adjust the rate of adding lustre to and the bright dipping visual angle of diffuser plate 26 to a certain extent by adjusting the size of drift angle.First, second, third, fourth V-type ridge structure 268,270,272,274 is interlaced, and form a plurality of triangular pyramid grooves 276, closely link to each other between a plurality of triangular pyramid grooves 276, wherein also have four interconnective triangular pyramid groove 276 and interconnective sidewalls thereof to form four jiaos of stars 278 with common tie point.A plurality of four jiaos of stars 278 are arranged in array.
The general thickness of diffuser plate 26 can be 0.4 millimeter to 4 millimeters.Diffuser plate 26 can be formed by one or more the material doped scattering particle 262 back injection mo(u)ldings in polymethylmethacrylate, polycarbonate, polystyrene, the styrene methyl methacrylate multipolymer.Scattering particle 262 can be one or more the potpourri in titanium dioxide fine particles, silicon dioxide microparticle and the acryl resin particulate.Need in the preparation process on mould, to be provided with and triangular pyramid groove 276 corresponding bulge-structures, so that make the diffuser plate 26 can moulding in the single injection process.Being appreciated that by adjusting the transmitance that scattering particle 262 and the ratio between the material that constitutes transparent bodies can be regulated diffuser plate 26, is preferable selection but the transmittance of diffuser plate 26 is controlled at more than 80%.
See also Fig. 4 to Fig. 6, optical sheet 28 comprises a transparent bodies, and transparent bodies comprises first surface 282 and and first surface 282 opposing second surface 284.Second surface 284 is positioned at the side near a plurality of light emitting diodes 24.First surface 282 is formed with a plurality of strip V-type projection 286 and strip arc convex 288 of alternately arranging and being parallel to each other.Second surface 284 is formed with a plurality of strip arc grooves 290 that are parallel to each other.The bearing of trend of a plurality of strip V-type projectioies 286 or strip arc convex 288 and the bearing of trend of a plurality of strip arc grooves 290 intersect.In the present embodiment, the bearing of trend of a plurality of strip V-type projectioies 286 and strip arc convex 288 is vertical mutually with the bearing of trend of a plurality of strip arc grooves 290, the vertical cross-section of strip arc convex 288 is a semicircular arc, and the vertical cross-section of strip arc groove 290 is a semicircular arc.Be appreciated that the strip arc convex 288 and the vertical cross-section of strip arc groove 290 also can be ellipse arc.
The width of strip V-type projection 286 is designated as D, and drift angle is designated as θ, highly is designated as H
1Then D, θ, H
1Satisfy following relational expression: 0.025 millimeter≤D≤1 millimeter, 80 degree≤θ≤100 degree, 0.01 millimeter≤H
1≤ 3 millimeters.The width of strip arc convex 288 is designated as L, and radius is designated as R, highly is designated as H
2, then L, R, H
2Satisfy following relational expression: 0.025 millimeter≤L≤1.5 millimeters, L/4≤R≤2L, 0.01 millimeter≤H
2≤ R.By regulating D, θ, H
1, L, R, and H
2Numerical value, can adjust the shape of strip V-type projection 286 and strip arc convex 288, thereby regulate the rate of adding lustre to and the bright dipping visual angle of optical sheet 28.
The spacing of adjacent two strip arc grooves 290 is designated as p, and radius is designated as r, highly is designated as h, and then p, r and h satisfy following relational expression: 0.025 millimeter≤p≤1.5 millimeters, and p/4≤r≤2p, 0.01 millimeter≤h≤r.By regulating the numerical value of p, r and h, can adjust the surface curvature and the spacing of strip arc groove 290, thereby regulate diffusion effect 290 pairs of incident lights of a plurality of strip arc grooves.
The general thickness of optical sheet 28 can be 0.4 millimeter to 4 millimeters.Optical sheet 28 can be formed by one or more the material injection mo(u)lding in polymethylmethacrylate, polycarbonate, polystyrene, the styrene methyl methacrylate multipolymer.Need in the preparation process on mould, to be provided with and strip V-type projection 286 and strip arc convex 288 corresponding sunk structures, and with the projective structure of strip arc groove 290 so that make the optical sheet 28 can moulding in the single injection process.
A plurality of optical sheets 30 can be diffusion sheet, brightening piece or reflecting polarized wafer.
In down straight aphototropism mode set 200, the first surface of diffuser plate 26 264 is near light emitting diodes 24, and the distance between itself and light emitting diode 24 tops is for being less than or equal to 3 millimeters.Diffuser plate 26 can be supported by bracing frame, or is fixed in by bonding mode on the madial wall of framework 22.Optical sheet 28 is arranged at intervals at the top of diffuser plate 26, and in the present embodiment, the spacing between optical sheet 28 and the diffuser plate 26 is more than or equal to 10 millimeters.Certainly, the distance of the two can actual conditions adjust, usually, under the identical situation of outgoing light homogeneity, the degree of depth of framework 22 becomes anti-square with the quantity of light emitting diode 24, when the quantity of light emitting diode 24 more for a long time, the degree of depth of framework 22 is less, and optical sheet 28 can be provided with smallerly with diffuser plate 26 distance at interval, when the negligible amounts of light emitting diode 24, the degree of depth of framework 22 is bigger, and optical sheet 28 correspondingly is provided with more greatly with diffuser plate 26 distance at interval.
During use, can allow second surface 266 near light emitting diodes as incidence surface and first surface 264 away from light emitting diode as exiting surface.Owing to have scattering particle 262 in diffuser plate 26 bodies, and the second surface 266 of diffuser plate 26 is formed with a plurality of interlaced V-type ridge structures, optical effects such as specific refraction, scattering, reflection and diffraction can take place in the light of injecting diffuser plate 26, thereby can make specific diffusion takes place, and light self-diffusion plate 26 ejaculation backs are less with the angle of first surface 264 from the light of diffuser plate 26 outgoing.Like this, after light enters the diffusion space 31 of 28 of diffuser plate 26 and optical sheets,, thereby strengthen the space diffusion effect of light, help eliminating the light source ghost through long light path.Then, light is injected optical sheet 28, diffusion to a certain degree takes place in 290 pairs of light of the strip arc groove of the second surface 284 of optical sheet 28, staggered strip V-type on the first surface 282 of optical sheet 28 projection 286 and strip arc convex 288 then, specific optical effects such as refraction, reflection and diffraction take place in the light that correlation goes out optical sheet 28, so that emergent ray further diffusion takes place and assembles in specific angular field of view, promote front face brightness and form the even brightness area source.
A plurality of optical sheets 30 are covered on the optical sheet 28, can make emergent ray more soft, mild.Certainly, the spacing between light emitting diode 24 hour, a plurality of optical sheets 30 can omit.
This shows, the microstructure on diffuser plate 26 surfaces of down straight aphototropism mode set 200 of the present invention can effectively increase the light path of light in down straight aphototropism mode set 200, make light obtain preferable space diffusion, help reducing the degree of depth of framework 22, then, optical sheet 28 makes emergent ray that further diffusion take place and assembles in specific angular field of view, thereby forms brightness height and homogeneity area source preferably.Like this, just can weaken even avoid the light source ghost, and the mode of the degree of depth of quantity that need not be by increasing light emitting diode 24 and framework 22 promotes the brightness and the uniformity coefficient of emergent light, so the cost of down straight aphototropism mode set 200 is lower, and is applicable to the slimming design.
See also Fig. 7, be depicted as the diffuser plate 46 of the embodiment of the invention two.Diffuser plate 46 has similar structure to diffuser plate 26, and its difference is: second surface 466 is formed with a plurality of strip V-type ridge structures that extend along three different directions, and is interlaced along a plurality of strip V-type ridge structures that different directions extends.Wherein a plurality of V-type ridge structures that extend along direction by in addition along two different directions extend and a plurality of V-type ridge structures of intersecting between intersection point.The drift angle of a plurality of strip V-type ridge structures is 50 to 120 degree.Similar with diffuser plate 26, diffuser plate 46 can make the light of outgoing that specific diffusion takes place, and it is less with the angle of first surface 464 that light self-diffusion plate 46 penetrates the back.Like this, light through long light path, helps strengthening the space diffusion effect in framework 22.
In embodiment two, the second surface 466 of diffuser plate 46 also can be formed with a plurality of strip V-type ridge structures that extend along two different directions, and is interlaced along a plurality of strip V-type ridge structures that different directions extends.
See also Fig. 8, be depicted as the optical sheet 48 of the embodiment of the invention three.Optical sheet 48 has similar structure to optical sheet 28, and its difference is: optical sheet 48 first surfaces 482 are formed with a plurality of strip arc convex 486 that are parallel to each other and a plurality of strip V-type projection 488 that is parallel to each other.A plurality of strip V-type projectioies 488 intersect vertically with a plurality of strip arc convex 486, are a plurality of half-cylindrical protruding thereby strip arc convex 486 is separated.The bearing of trend of the strip arc convex 486 on the first surface 482 and the bearing of trend of the strip arc groove 490 on the second surface 484 intersect.Specifically in the present embodiment, a plurality of strip arc convex 486 are perpendicular with a plurality of strip V-type projectioies 488, and the bearing of trend of the strip arc groove 490 on the bearing of trend of a plurality of strip arc convex 486 and the second surface 484 is perpendicular.Similar with optical sheet 28, optical sheet 48 can make light that further diffusion takes place and assemble in specific angular field of view.
In addition, those skilled in the art also can do other variation in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention all should be included in the present invention's scope required for protection.
Claims (10)
1. down straight aphototropism mode set, it comprises a framework, a plurality of light emitting diodes, a diffuser plate and an optical sheet, these a plurality of light emitting diodes are arranged on the base plate of this framework, this diffuser plate is positioned at this light emitting diode top, this optical sheet is disposed on the top of this diffuser plate, this diffuser plate comprises that first surface reaches and this first surface opposing second surface, the second surface of this diffuser plate is near light emitting diode, this optical sheet comprises a transparent bodies, this transparent bodies comprises that first surface reaches and this first surface opposing second surface, the second surface of this optical sheet is near light emitting diode, it is characterized in that: the first surface of this diffuser plate is the plane, this diffuser plate also comprises a plurality of strip V-type ridge structures of at least two the different directions extensions in edge that are formed at this second surface, this is interlaced along a plurality of strip V-type ridge structures that different directions extends, this optical sheet comprises a plurality of strip arc convex that are parallel to each other that are formed at this first surface, and a plurality of strip arc grooves that are parallel to each other that are formed at second surface, these a plurality of strip arc groove bearing of trends intersect with the bearing of trend of these a plurality of strip arc convex.
2. down straight aphototropism mode set as claimed in claim 1 is characterized in that: the distance between the second surface of this diffuser plate and this a plurality of LED top is for being less than or equal to 3 millimeters, and the spacing between this optical sheet and this diffuser plate is more than or equal to 10 millimeters.
3. down straight aphototropism mode set as claimed in claim 1 is characterized in that: this optical sheet further comprises a plurality of strip V-type projectioies that are parallel to each other that are formed at first surface, and this strip V-type projection intersects vertically with this strip arc convex.
4. down straight aphototropism mode set as claimed in claim 1, it is characterized in that: this optical sheet comprises further and is formed at first surface a plurality of strip V-type projectioies that are parallel to each other also that these a plurality of strip V-types projectioies are alternately arranged and are parallel to each other with these a plurality of strip arc convex.
5. down straight aphototropism mode set as claimed in claim 1 is characterized in that: the vertical cross-section of this strip arc groove and this strip arc convex is one of circular arc and ellipse arc.
6. down straight aphototropism mode set as claimed in claim 1 is characterized in that: these a plurality of V-type ridge structures that are formed at the second surface of this diffuser plate extend along two different directions, and these two a plurality of V-type ridge structures that extend along different directions intersect vertically.
7. down straight aphototropism mode set as claimed in claim 1, it is characterized in that: these a plurality of V-type ridge structures that are formed at the second surface of this diffuser plate extend along three different directions, wherein, a plurality of V-type ridge structures that extend along direction by in addition along two different directions extend and a plurality of V-type ridge structures of intersecting between intersection point.
8. down straight aphototropism mode set as claimed in claim 1, it is characterized in that: these a plurality of V-type ridge structures that are formed at the second surface of this diffuser plate extend along four different directions, and wherein the V-type ridge structure that extends along both direction passes through along the intersection point between the V-type ridge structure of two other direction extension.
9. down straight aphototropism mode set as claimed in claim 8 is characterized in that: in these four different bearing of trends, the angle between adjacent two bearing of trends is 45 degree.
10. down straight aphototropism mode set as claimed in claim 1 is characterized in that: this diffuser plate is made by the transparent material that is dispersed with scattering particle, and this scattering particle is a kind of or its combination in titanium dioxide fine particles, silicon dioxide microparticle and the acryl resin particulate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810303364A CN101644856A (en) | 2008-08-04 | 2008-08-04 | Direct backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810303364A CN101644856A (en) | 2008-08-04 | 2008-08-04 | Direct backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101644856A true CN101644856A (en) | 2010-02-10 |
Family
ID=41656796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810303364A Pending CN101644856A (en) | 2008-08-04 | 2008-08-04 | Direct backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101644856A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832522A (en) * | 2010-04-28 | 2010-09-15 | 海洋王照明科技股份有限公司 | Lamp transparent part and LED lamp |
| CN111624818A (en) * | 2020-06-30 | 2020-09-04 | 中航华东光电有限公司 | Method for improving LCD backlight brightness |
| CN113325391A (en) * | 2017-12-08 | 2021-08-31 | 浙江舜宇智能光学技术有限公司 | Wide-angle TOF module and application thereof |
| CN115166879A (en) * | 2022-08-17 | 2022-10-11 | 富盛光电（吴江）有限公司 | Co-extrusion diffusion plate |
-
2008
- 2008-08-04 CN CN200810303364A patent/CN101644856A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832522A (en) * | 2010-04-28 | 2010-09-15 | 海洋王照明科技股份有限公司 | Lamp transparent part and LED lamp |
| CN113325391A (en) * | 2017-12-08 | 2021-08-31 | 浙江舜宇智能光学技术有限公司 | Wide-angle TOF module and application thereof |
| CN111624818A (en) * | 2020-06-30 | 2020-09-04 | 中航华东光电有限公司 | Method for improving LCD backlight brightness |
| CN115166879A (en) * | 2022-08-17 | 2022-10-11 | 富盛光电（吴江）有限公司 | Co-extrusion diffusion plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101644854A (en) | Direct backlight module | |
| CN101393282B (en) | Back light module unit and prismatic lens thereof | |
| CN101191847A (en) | Optical plate | |
| US7753565B2 (en) | Prism sheet and backlight module the same | |
| CN101126822A (en) | Optical board and the backlight module group using same | |
| CN101435885B (en) | Backlight module unit and prism lens | |
| KR20080067049A (en) | Light guide panel for back light unit of tft-lcd | |
| CN101191845A (en) | Optical plate | |
| CN101393284A (en) | Back light module unit and prismatic lens thereof | |
| CN101755166A (en) | Illumination device and display device | |
| CN101196582B (en) | Optical plate | |
| US20090073676A1 (en) | Prism sheet and backlight module using the same | |
| CN101196583A (en) | Optical plate | |
| CN101393277B (en) | Back light module unit and prismatic lens thereof | |
| CN101191850A (en) | Optical plate | |
| CN101639588A (en) | Direct type backlight module | |
| CN101625483A (en) | Backlight module and diffusion plate thereof | |
| CN101196573A (en) | Optical plate | |
| CN101644856A (en) | Direct backlight module | |
| CN101191852A (en) | Optical plate | |
| CN101191851A (en) | Optical plate | |
| CN101393286A (en) | Back light module unit and prismatic lens thereof | |
| CN101191849A (en) | Optical plate | |
| CN101196581A (en) | Optical plate | |
| CN101619836A (en) | Backlight module and diffusion plate thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100210 |