CN2594812Y - Light conducting panel and surface light source devices - Google Patents
Light conducting panel and surface light source devices Download PDFInfo
- Publication number
- CN2594812Y CN2594812Y CN 02250620 CN02250620U CN2594812Y CN 2594812 Y CN2594812 Y CN 2594812Y CN 02250620 CN02250620 CN 02250620 CN 02250620 U CN02250620 U CN 02250620U CN 2594812 Y CN2594812 Y CN 2594812Y
- Authority
- CN
- China
- Prior art keywords
- light
- guide plate
- light guide
- scattering
- 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.)
- Expired - Lifetime
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- Planar Illumination Modules (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The utility model relates to a light conducting plate and a surface light source device which uses the light conducting plate. The light conducting plate comprises a light incident surface, a light outgoing surface and a light reflection surface which is opposite to the light outgoing surface, wherein, the light reflection surface is provided with a plurality of scattering netted points; optical scattering particles of which reflection surfaces are spherical are added in screen printing ink when the scattering netted points of the light conducting plate are printed by screen; consequently, the fine structure of the scattering netted points is changed so that the scattering power of each scattering netted point is enhanced.
Description
[technical field]
The utility model is about a kind of light guide plate and planar light source device, refers to a kind of having than the light guide plate of strong scattering ability and adopting the planar light source device of this light guide plate of liquid crystal indicator that be used for especially.
[background technology]
Because the liquid crystal itself in the display panels does not have the characteristics of luminescence, for reaching display effect, must provide a planar light source device to display panels, its function is to provide the area source that briliancy is abundant and be evenly distributed to display panels.
Existing planar light source device mainly is made up of light source, light guide plate, reflecting plate, diffuser plate and prism plate.Wherein, light source can be arranged at light guide plate one side or two opposite sides and with light emission to light guide plate.The effect of light guide plate is the transmission direction of direct light line, with the briliancy of raising panel and the homogeneity of panel briliancy, is assembly crucial in the planar light source device.The making of light guide plate generally can be divided into printing-type and non-printing-type.After the processing procedure of printing-type is the flat panel substrate injection molding, utilize wire mark (Screen Printing) technology in the scattering netted dot (Dot Pattern) of light guide plate light reflection surface printing-ink with the formation point-like, this principle is to utilize the scattering nature of scattering netted dot to destroy total reflection effect, and light is evenly penetrated by the light guide plate light-emitting face after the scattering netted dot scattering.
Fig. 1 is the light guide plate 12 of prior art, and this light guide plate 12 comprises a light entrance face 121, a light-emitting face 122 and a light reflection surface 123 relative with light-emitting face 122, and a plurality of scattering netted dots 124 distribute on this light reflection surface 123.
Fig. 2 is the enlarged drawing of II part among Fig. 1, and wherein, this scattering netted dot 124 is with titanium white (TiO
2) or the barium sulphate (BaSO of settleability
4) particle 125 that isoreflectance is high is printed on the light reflection surface 123 of light guide plate 12, harden then (Curing) is fixing and form.But in the microtexture of this scattering netted dot 124, limited because of the reflecting surface that particle 125 provides, its scattering power to light is not strong, and then makes that the uniformity coefficient of this light guide plate 12 is relatively poor.
[utility model content]
For overcoming the relatively poor defective of light guide plate outgoing light homogeneity in the prior art, the utility model provides a kind of scattering power stronger light guide plate, and this light guide plate has good outgoing light homogeneity.
The utility model also provides a kind of planar light source device that adopts above-mentioned light guide plate.
The utility model provides a light guide plate, and this light guide plate comprises that a light entrance face, that is used to receive light is used to export light-emitting face and a light reflection surface relative with this light-emitting face that enters the light of this light guide plate from this light entrance face.Wherein this light reflection surface is provided with a plurality of scattering netted dots, and these a plurality of scattering netted dots comprise that a plurality of reflectings surface are the optical scattering particle of sphere.
The planar light source device that the utility model provides comprises an at least one light source and a light guide plate, and wherein this light guide plate comprises that at least one light entrance face, that is used to receive the light that light source sends is used to export light-emitting face and a light reflection surface relative with this light-emitting face that enters the light of light guide plate from above-mentioned light entrance face.This at least one light source is positioned at corresponding light entrance face one side, and this light reflection surface is provided with a plurality of scattering netted dots, and wherein, these a plurality of scattering netted dots comprise that a plurality of reflectings surface are the optical scattering particle of sphere.
Compared to prior art, the utlity model has following advantage: adding reflecting surface in scattering netted dot is the optical scattering particle of sphere, make and form a plurality of small spherical reflectings surface in the microtexture of scattering netted dot, the optical beam ratio that reflects from scattering netted dot does not add this optical scattering particle and the light beam uniformity coefficient that reflects wants high like this, and then makes light guide plate and adopt the uniformity coefficient of the planar light source device of this light guide plate to be improved.
[description of drawings]
Fig. 1 is the sectional view of existing light guide plate.
Fig. 2 is the enlarged drawing of light guide plate II part shown in Figure 1.
Fig. 3 is the sectional view of the utility model planar light source device.
Fig. 4 is that the scattering netted dot microtexture of the utility model light guide plate is to the effect of light synoptic diagram.
Fig. 5 is that the utility model light guide plate is to the effect of light synoptic diagram.
[embodiment]
Please refer to Fig. 3, is the sectional view of the utility model planar light source device 2, and this planar light source device 2 comprises a light source 21, a light guide plate 22, a reflecting plate 23 and a diffuser plate 24.Wherein light guide plate 22 comprises that a light entrance face 221, that is used to receive from the light of light source 21 is used to export light-emitting face 222, a light reflection surface 223 and a plurality of scattering netted dot 224 that enters the light of light guide plate 22 from light entrance face 221, and wherein these a plurality of scattering netted dots 224 are to be printed on the light reflection surface 223 by fabrography.This light guide plate 22 is a wedge type, also can be plate.Light source 21 is positioned at light guide plate 22 light entrance faces 221 1 sides, and reflecting plate 23 is arranged at the light reflection surface 223 of light guide plate 22 and a side of light-emitting face 222 respectively with diffuser plate 24.
Please cooperate with reference to Fig. 4, the microtexture of scattering netted dot 224 that is the utility model light guide plate 22 is to the effect of light synoptic diagram.When the scattering netted dot 224 of wire mark light guide plate 22, in screen printing ink (not indicating), add optical scattering particle 225, this optical scattering particle is PMMA (Polymethyl Methacrylate, a polymethylmethacrylate), also can be the particle of other high reflectances.Wherein, this screen printing ink is IR (Infra-Red, an infrared ray) base material, the fine spherolite (Micro Sphere) that this optical scattering particle 225 is single particle size (Mono Disperse), its particle size is between 1 micron to 10 microns, and this optical scattering particle 225 has spherical reflecting surface.
The optical scattering particle 225 that will have spherical reflecting surface adds in the screen printing inks, just increases the reflecting surface in a plurality of little spherical surface cross sections in the microtexture of each scattering netted dot 224.When incident ray 15 incided the reflecting surface of optical scattering particle 225, it is very at random that the reflection angle of reflection ray 151 becomes, thereby make the angle of reflection ray 151 outgoing very at random.And since in scattering netted dot 224 structures optical scattering particle 225 numbers a lot, so the dispersion effect of the reflection ray 151 that comes out from scattering netted dot 224 overall emission is better than the dispersion effect of no optics scattering particle 225.
Please cooperate with reference to Fig. 5, be that the utility model light guide plate is to the effect of light synoptic diagram.Wherein because each scattering netted dot 224 all has stronger scattering power, the combination of a plurality of scattering netted dots 224 can realize the whole scattering power of light guide plate 22, make emergent ray 16 evenly penetrate, and then improve the uniformity coefficient of light guide plate 22 and planar light source device 2 from light-emitting face 222.Wherein the geometric size of the light scattering ability of scattering netted dot 224 and light-emitting uniformity and this scattering netted dot 224 is irrelevant, and is only relevant with size, concentration, the refraction coefficient of optical scattering particle 225 and the refraction coefficient of the ink material that adopted in each scattering netted dot 224.Scattering netted dot 224 sizes of the utility model light guide plate 22 can be the same, or with the different and regular variations of light source distance.
Claims (10)
1. light guide plate, comprise that a light entrance face, that is used to receive light is used to export light-emitting face and a light reflection surface relative with this light-emitting face that enters the light of light guide plate from this light entrance face, wherein this reflecting surface is provided with a plurality of scattering netted dots, it is characterized in that: these a plurality of scattering netted dots comprise that a plurality of reflectings surface are the optical scattering particle of sphere.
2. light guide plate as claimed in claim 1 is characterized in that: this optical scattering particle is the fine spherolite of single particle size.
3. light guide plate as claimed in claim 1 is characterized in that: this a plurality of scattering netted dots big or small identical.
4. light guide plate as claimed in claim 1 is characterized in that: the size of these a plurality of scattering netted dots is with rule changes with the variation of light source distance.
5. light guide plate as claimed in claim 1 is characterized in that: this light guide plate is plate.
6. light guide plate as claimed in claim 1 is characterized in that: this light guide plate is a wedge type.
7. planar light source device, comprise an at least one light source and a light guide plate, wherein this light guide plate comprises that at least one light entrance face, that is used to receive the light that light source sends is used to export light-emitting face and a light reflection surface relative with this light-emitting face that enters the light of light guide plate from this light entrance face, this at least one light source is positioned at a side of corresponding light entrance face, this light reflection surface is provided with a plurality of scattering netted dots, it is characterized in that: these a plurality of scattering netted dots comprise that a plurality of reflectings surface are the optical scattering particle of sphere.
8. planar light source device as claimed in claim 7 is characterized in that: this optical scattering particle is the fine spherolite of single particle size.
9. planar light source device as claimed in claim 7 is characterized in that: this planar light source device comprises a reflecting plate, is positioned at light reflection surface one side of light guide plate.
10. planar light source device as claimed in claim 7 is characterized in that: this planar light source device comprises a diffuser plate, is positioned at light-emitting face one side of light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02250620 CN2594812Y (en) | 2002-12-21 | 2002-12-21 | Light conducting panel and surface light source devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02250620 CN2594812Y (en) | 2002-12-21 | 2002-12-21 | Light conducting panel and surface light source devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2594812Y true CN2594812Y (en) | 2003-12-24 |
Family
ID=33720794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02250620 Expired - Lifetime CN2594812Y (en) | 2002-12-21 | 2002-12-21 | Light conducting panel and surface light source devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2594812Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100376965C (en) * | 2004-12-24 | 2008-03-26 | 群康科技(深圳)有限公司 | LCD device |
| WO2009003317A1 (en) * | 2007-07-04 | 2009-01-08 | Dongguan Memtech Electronic Products Co., Ltd | Printed ultra thin light guiding plate |
| CN101852394A (en) * | 2009-03-31 | 2010-10-06 | 富士胶片株式会社 | Lgp |
| WO2011026432A1 (en) * | 2009-09-04 | 2011-03-10 | 珠海格力电器股份有限公司 | Indoor unit of wall-hanging type air conditioner and light emitting plate thereof |
| CN102073090A (en) * | 2010-11-05 | 2011-05-25 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module |
| CN102382505A (en) * | 2010-09-01 | 2012-03-21 | 奇美实业股份有限公司 | Ink composition for forming patterns, light guide plate, luminous unit and liquid crystal display assembly provided with luminous unit |
| CN102483195A (en) * | 2009-06-24 | 2012-05-30 | 早水电机工业株式会社 | Lighting device |
| CN102734693A (en) * | 2011-04-12 | 2012-10-17 | 奇菱科技股份有限公司 | Light-emitting device |
| CN102914813A (en) * | 2011-08-04 | 2013-02-06 | 鸿富锦精密工业（深圳）有限公司 | Composite light guide plate and manufacturing method thereof |
| US8702293B2 (en) | 2010-11-05 | 2014-04-22 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Light guide plate and backlight module |
| CN104155715A (en) * | 2014-07-16 | 2014-11-19 | 合肥鑫晟光电科技有限公司 | Light guide device, backlight module group and display device |
| CN104991304B (en) * | 2015-06-25 | 2019-02-22 | 东莞轩朗实业有限公司 | Light guide plate, ink and inkjet printing method for manufacturing light guide plate |
-
2002
- 2002-12-21 CN CN 02250620 patent/CN2594812Y/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100376965C (en) * | 2004-12-24 | 2008-03-26 | 群康科技(深圳)有限公司 | LCD device |
| CN101652706B (en) * | 2007-07-04 | 2012-09-05 | 东莞万德电子制品有限公司 | Printed ultra thin light guiding plate |
| WO2009003317A1 (en) * | 2007-07-04 | 2009-01-08 | Dongguan Memtech Electronic Products Co., Ltd | Printed ultra thin light guiding plate |
| CN101852394A (en) * | 2009-03-31 | 2010-10-06 | 富士胶片株式会社 | Lgp |
| CN101852394B (en) * | 2009-03-31 | 2013-07-10 | 富士胶片株式会社 | Light guide plate |
| US8997387B2 (en) | 2009-06-24 | 2015-04-07 | Hayamizu Denki Kogyo Kabushikikaisha | Light guide plate having diffused light printed dot pattern |
| CN102483195A (en) * | 2009-06-24 | 2012-05-30 | 早水电机工业株式会社 | Lighting device |
| WO2011026432A1 (en) * | 2009-09-04 | 2011-03-10 | 珠海格力电器股份有限公司 | Indoor unit of wall-hanging type air conditioner and light emitting plate thereof |
| CN102382505A (en) * | 2010-09-01 | 2012-03-21 | 奇美实业股份有限公司 | Ink composition for forming patterns, light guide plate, luminous unit and liquid crystal display assembly provided with luminous unit |
| CN102073090A (en) * | 2010-11-05 | 2011-05-25 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module |
| CN102073090B (en) * | 2010-11-05 | 2012-08-22 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module |
| US8702293B2 (en) | 2010-11-05 | 2014-04-22 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Light guide plate and backlight module |
| WO2012058833A1 (en) * | 2010-11-05 | 2012-05-10 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module |
| CN102734693A (en) * | 2011-04-12 | 2012-10-17 | 奇菱科技股份有限公司 | Light-emitting device |
| CN102914813A (en) * | 2011-08-04 | 2013-02-06 | 鸿富锦精密工业（深圳）有限公司 | Composite light guide plate and manufacturing method thereof |
| CN104155715A (en) * | 2014-07-16 | 2014-11-19 | 合肥鑫晟光电科技有限公司 | Light guide device, backlight module group and display device |
| CN104991304B (en) * | 2015-06-25 | 2019-02-22 | 东莞轩朗实业有限公司 | Light guide plate, ink and inkjet printing method for manufacturing light guide plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121221 Granted publication date: 20031224 |