CN1504770A - Light conducting plate and its preparing process - Google Patents
Light conducting plate and its preparing process Download PDFInfo
- Publication number
- CN1504770A CN1504770A CNA021521085A CN02152108A CN1504770A CN 1504770 A CN1504770 A CN 1504770A CN A021521085 A CNA021521085 A CN A021521085A CN 02152108 A CN02152108 A CN 02152108A CN 1504770 A CN1504770 A CN 1504770A
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- Prior art keywords
- light
- guide plate
- light guide
- spherolite
- organic filler
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- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention relates to a light conducting board and process for manufacture, wherein the light conducting board comprises a light-transparent plate and a light diffusion arrangement, the light-transparent plate is made of transparent synthetic resin material or glass, which includes at least incidence plane for receiving light beams, an outgoing plane for letting light beams emit and a bottom plane, the light diffusion arrangement is arranged on the light outgoing plane of the light-transparent plate.
Description
[technical field]
The present invention relates to a kind of light guide plate and manufacture method thereof, relate in particular to a kind of light guide plate and manufacture method thereof with diffusion function.
[background technology]
Because liquid crystal itself is not had a characteristics of luminescence, can only control passing through or not passing through of light, so must provide a light-source system to display panels, as back light system, its function is to provide briliancy fully and the area source that is evenly distributed for display panels.
Existing back light system is made of light source, reflecting plate, light guide plate, diffuser plate and prism plate etc., wherein light guide plate is the key element of back light system, its role is to light that pilot point light source or line source send through light guide plate scattering and total reflection and convert area source to.For making being more evenly distributed of this area source briliancy, can one diffuser plate be set in light guide plate exit facet side.
A kind of prior art back light system sees also No. the 368081st, the Taiwan patent announcement (with reference to Fig. 1) of on August 21st, 1999 bulletin, and this back light system 100 comprises that reflecting plate 120, that the light guide plate 110, of a light-permeable is affixed on light guide plate 110 bottom surfaces is affixed on the light-diffusing film 130 and a light source 140 of light guide plate 110 exiting surfaces.Light guide plate 110 surfaces have many trapezoidal elongated tracks of arranging in the same way 111, and light source 140 is arranged at head end one side of this trapezoidal elongated track 111, the side in addition of track 111 trapezoidal shape tail ends, light guide plate 110 then is provided with a reflecting piece 150, source light is compensated at track 111 tail ends, thereby light guide plate 110 have uniform briliancy.The function of light-diffusing film 130 for diffusion from light source 140 send, see through light guide plate 110 or through reflecting plate 120 reflection backs the light through light guide plate 110 so that the briliancy homogenising of back light system 100 outgoing beams.
But employed light guide plate 110 itself can not make light evenly distribute in this back light system 100, and needs to adopt light-diffusing film 130, makes the material cost height of this astigmatism mould 130.And two-layer light transmission interface is arranged between this light guide plate 110 and the light-diffusing film 130, and this two-layer light transmission interface can cause certain optical loss, causes briliancy to reduce, thereby influences the whole optical property of back light system 100.
[summary of the invention]
Can not make the equally distributed defective of light for overcoming the prior art light guide plate, the invention provides the light guide plate that a kind of bright dipping briliancy is evenly distributed and the bright dipping briliancy is high.
The present invention also provides a kind of above-mentioned manufacturing method of light conducting board.
The technical scheme that technical solution problem of the present invention is adopted is: a light guide plate is provided, it comprises a light-passing board and an optical scattering structure, this light-passing board comprises at least one plane of incidence in order to receiving beam, a usefulness so that the exit facet of light beam outgoing and a bottom surface, and this optical scattering structure is arranged at the exit facet of this light-passing board.This optical scattering structure comprises organic filler spherolite and bonding agent, and the organic filler spherolite evenly is mixed in the bonding agent.
The above-mentioned manufacturing method of light conducting board of the present invention may further comprise the steps: a light-passing board is provided; Be mixed in the organic filler spherolite in the bonding agent and fully stirring, make its even distribution; Coat the exit facet of light-passing board with being mixed in organic filler spherolite in the bonding agent.
Compare with the prior art light guide plate, the present invention has the following advantages: light guide plate of the present invention comprises an optical scattering structure, this optical scattering structure comprises the organic filler spherolite, fully scattering is from the light of light-emitting face outgoing, thereby, need not adopt scatter plate can make the briliancy of emergent ray evenly distribute.And the organic filling spherolite of this optical scattering structure and the exit facet contact area of light-passing board are little, and to make the optical loss of emergent ray also reduce to minimum thereupon, and then improve the bright dipping briliancy of light guide plate.In addition,,, also reduced the light transmission interface simultaneously, can improve light utilization efficiency so can reduce the production cost of back light system because need not adopt scatter plate.
[description of drawings]
Fig. 1 is the three-dimensional exploded view of prior art back light system.
Fig. 2 is the stereographic map of light guide plate first embodiment of the present invention.
Fig. 3 is the front view of light guide plate shown in Figure 2.
Fig. 4 is the optical scattering structure distribution schematic diagram of light guide plate shown in Figure 2.
Fig. 5 is the network point distribution synoptic diagram of light guide plate shown in Figure 2.
Fig. 6 is the front elevation of light guide plate second embodiment of the present invention.
[embodiment]
See also Fig. 2, be first embodiment of the invention, light guide plate 10 of the present invention comprises a light-passing board 20 and an optical scattering structure 30.Light-passing board 20 is made by transparent resin material or glass, and it comprises light entrance face 25, light-emitting face 21 and bottom surface 23 (as shown in Figure 3), and wherein light-emitting face 21 is relative with bottom surface 23, and light-emitting face 21 all intersects with light entrance face 25 with bottom surface 23.
Please consult Fig. 2, Fig. 3 and Fig. 4 together, the light-emitting face 21 of this light-passing board 20 is provided with optical scattering structure 30.This optical scattering structure 30 comprises organic filler spherolite 31 and bonding agent 33, and it can make beam spread from light-emitting face 21 outgoing to improve homogeneity.This organic filler spherolite 31 evenly is mixed in the bonding agent 33, adheres to the exit facet 21 of light-passing board 20 by bonding agent 33.Organic filler spherolite 31 general polymethylmethacrylate (the Polymthyl Metharylate that adopt, PMMA) material, also can adopt polycarbonate (Polycarbonate) or metallocene cyclic olefin copolymer (Metallocene Cyclic OlefinCopolymer, MCOC), its sphere diameter size is 10 μ m～50 μ m, and 33 in bonding agent is generally selected acrylic adhesive agent for use.
Please consult Fig. 2, Fig. 3 and Fig. 5 together, light guide plate 10 also comprises a plurality of equally distributed sites 41, it is arranged at the bottom surface 23 of light-passing board 20, these a plurality of sites 41 adopt high diverging light material to make, can make the light generation scattering and the reflection that are incident to light entrance face 25, in light-passing board 20 internal transmission, and then destroy the total reflection condition that the light be incident to light entrance face 25 transmits in light-passing board 20, make light by light-emitting face 21 even outgoing.
Please join Fig. 6, be second embodiment of the present invention, light guide plate 10 ' of the present invention comprises a light-passing board 20 ' and an optical scattering structure 30 '.This light-passing board 20 ' comprises light entrance face 25 ', light-emitting face 21 ' and bottom surface 23 ', is provided with as the described optical scattering structure of first embodiment (not indicating) at the plane of incidence 25 ', can improve the briliancy and the homogeneity of emergent light.
Manufacturing method of light conducting board of the present invention may further comprise the steps: the light-passing board that provides a synthetic resin material or glass to make; With particle size is that the organic filler spherolite of 10/ μ m～50/ μ m is mixed in the acrylic adhesive agent, fully stirs, and wherein the organic filler spherolite generally adopts polymethyl methacrylate materials, also can adopt polycarbonate or metallocene cyclic olefin copolymer; Evenly coat the light-emitting face of light-passing board with being mixed in organic filler spherolite in the acrylic adhesive agent.The bottom surface that manufacturing method of light conducting board of the present invention can further be included in light-passing board forms the step of a plurality of sites.
Claims (12)
1. light guide plate, comprise a light-passing board, this light-passing board comprises that at least one plane of incidence in order to receiving beam, a usefulness are so that the exit facet of light outgoing and a bottom surface, it is characterized in that this light guide plate further comprises an optical scattering structure, this optical scattering structure is arranged at the exit facet of light-passing board, comprise organic filler spherolite and bonding agent, this organic filler spherolite evenly is mixed in the bonding agent.
2. light guide plate as claimed in claim 1 is characterized in that this organic filler spherolite evenly is arranged at exit facet, and its particle size is 10 μ m～50 μ m.
3. light guide plate as claimed in claim 1, the material that it is characterized in that this organic filler spherolite are polymethylmethacrylate, polycarbonate or metallocene cyclic olefin copolymer.
4. light guide plate as claimed in claim 1 is characterized in that this bonding agent adopts acrylic adhesive agent.
5. light guide plate as claimed in claim 1 is characterized in that the size of this organic filler spherolite, density increase gradually along the direction away from the plane of incidence.
6. light guide plate as claimed in claim 1 is characterized in that this light-passing board is plate shaped or wedge shape, and its bottom surface is provided with a plurality of sites.
7 light guide plate as claimed in claim 6 is characterized in that the size of these a plurality of sites, density increase gradually along the direction away from the plane of incidence.
The method for making of 8 one kinds of light guide plate may further comprise the steps: a light-passing board is provided; Evenly be mixed in the organic filler spherolite in the bonding agent; Evenly coat the exit facet of light guide plate with being mixed in organic filler spherolite in the bonding agent.
9 manufacturing method of light conducting board as claimed in claim 8, the particle size that it is characterized in that this organic filler spherolite are 10 μ m～50 μ m.
The described manufacturing method of light conducting board of 10 claims 8, the material that it is characterized in that this organic filler spherolite are polymethylmethacrylate, polycarbonate or metallocene cyclic olefin copolymer.
11 manufacturing method of light conducting board as claimed in claim 8 is characterized in that this bonding agent adopts acrylic adhesive agent.
12 manufacturing method of light conducting board as claimed in claim 8 is characterized in that this manufacturing method of light conducting board comprises that further a surface of light-passing board forms the step of a plurality of sites.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02152108 CN1291247C (en) | 2002-11-28 | 2002-11-28 | Light conducting plate and its preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02152108 CN1291247C (en) | 2002-11-28 | 2002-11-28 | Light conducting plate and its preparing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1504770A true CN1504770A (en) | 2004-06-16 |
| CN1291247C CN1291247C (en) | 2006-12-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02152108 Expired - Fee Related CN1291247C (en) | 2002-11-28 | 2002-11-28 | Light conducting plate and its preparing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1291247C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100376962C (en) * | 2004-07-24 | 2008-03-26 | 鸿富锦精密工业（深圳）有限公司 | Light conducting plate |
| CN100381836C (en) * | 2004-07-01 | 2008-04-16 | 长兴化学工业股份有限公司 | Spreading film |
| CN100389346C (en) * | 2004-08-07 | 2008-05-21 | 鸿富锦精密工业（深圳）有限公司 | Light guiding plate and manufacturing method thereof |
| CN1790065B (en) * | 2004-12-16 | 2010-05-26 | 三星电子株式会社 | Light dispersion assembly,backlight and display device having the same |
| CN102298253A (en) * | 2010-06-25 | 2011-12-28 | 鸿富锦精密工业（深圳）有限公司 | Miniature silicon crystal projector |
| CN105698045A (en) * | 2014-11-28 | 2016-06-22 | 江苏欧密格光电科技股份有限公司 | High-reflectance LED backlight plate |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900300B (en) * | 2010-07-30 | 2012-01-11 | 深圳市华星光电技术有限公司 | Light-conducting board and production method thereof |
| US8500318B2 (en) | 2010-07-30 | 2013-08-06 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Light guide plate and manufacturing method thereof |
-
2002
- 2002-11-28 CN CN 02152108 patent/CN1291247C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381836C (en) * | 2004-07-01 | 2008-04-16 | 长兴化学工业股份有限公司 | Spreading film |
| CN100376962C (en) * | 2004-07-24 | 2008-03-26 | 鸿富锦精密工业（深圳）有限公司 | Light conducting plate |
| CN100389346C (en) * | 2004-08-07 | 2008-05-21 | 鸿富锦精密工业（深圳）有限公司 | Light guiding plate and manufacturing method thereof |
| CN1790065B (en) * | 2004-12-16 | 2010-05-26 | 三星电子株式会社 | Light dispersion assembly,backlight and display device having the same |
| CN102298253A (en) * | 2010-06-25 | 2011-12-28 | 鸿富锦精密工业（深圳）有限公司 | Miniature silicon crystal projector |
| CN105698045A (en) * | 2014-11-28 | 2016-06-22 | 江苏欧密格光电科技股份有限公司 | High-reflectance LED backlight plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1291247C (en) | 2006-12-20 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061220 Termination date: 20151128 |