CN1512198A - Reflective plate and area source device - Google Patents
Reflective plate and area source device Download PDFInfo
- Publication number
- CN1512198A CN1512198A CNA021399182A CN02139918A CN1512198A CN 1512198 A CN1512198 A CN 1512198A CN A021399182 A CNA021399182 A CN A021399182A CN 02139918 A CN02139918 A CN 02139918A CN 1512198 A CN1512198 A CN 1512198A
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- China
- Prior art keywords
- light
- plate
- guide plate
- light guide
- reflecting plate
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- 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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Abstract
The present invention relates to one kind of reflecting plate and area light source device. The reflecting plate includes one base plate and one reflecting layer with several distributed scattering netted points. The area light source device includes one reflecting plate, at least one light source, one light guiding plate, one diffusion plate and one prism plate.
Description
[technical field]
The invention relates to a kind of reflecting plate and planar light source device, refer to a kind of planar light source device that is used for the reflecting plate with scattering function of liquid crystal indicator and adopts this reflecting plate especially.
[background technology]
Because the liquid crystal itself in the display panels does not have the characteristics of luminescence, for reaching display effect, needing provides 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, its operation principles is: light enters light guide plate after light source penetrates, export via the scattering unit reflection of light guide plate light reflection surface and by the light-emitting face of light guide plate, cooperate the enhancing effect of diffuser plate and prismatic lens, briliancy distribution of light sources adequately and uniformly is provided.
Please refer to Fig. 1, is the planar light source device of prior art.This planar light source device 1 mainly is made up of light source 11, light guide plate 12, reflecting plate 13, diffuser plate 14 and prism plate 15.The effect of light guide plate 12 is the transmission direction of direct light line, and it is the key component of planar light source device 1.The light reflection surface 121 of light guide plate 12 is provided with scattering unit 122, to improve the briliancy and the homogeneity thereof of light guide plate 12.
This light guide plate 12 is to make with printing-type, after the processing procedure of printing-type is flat panel substrate (indicating) injection molding, utilize wire mark (Screen Printing) technology at light reflection surface 121 printing-inks of light guide plate 12 to form the scattering unit 122 of point-like.
The light guide plate of prior art also can be that non-printing-type is made, please refer to Fig. 2, it is the light guide plate 120 that non-printing-type is made, the leaded light pattern that it will design in advance is produced on the mould, adopt the direct injection method to make the zigzag scattering unit 1202 that is one of the forming on the light reflection surface 1201 of this light guide plate 120.
Please referring again to Fig. 1 and Fig. 2, no matter be that employing printing-type processing procedure also is non-printing-type processing procedure, scattering unit 122,1202 all is arranged on the light reflection surface 121,1201 of light guide plate 12,120.And the cost of light guide plate 12,120 is higher, for the printing-type processing procedure, light guide plate 12 has only the one side printing, one side is not printed in addition, cause easily being out of shape, be difficult for preserving, on light guide plate 12 light reflection surfaces 121, design the site simultaneously because of light guide plate 12 suctions, cause light guide plate 12 to damage in process of production easily, more than all can cause production cost to rise.For non-printing-type processing procedure, 120 needs ejection formations of light guide plate, relevant device and mould development expense are more expensive, and causing increases its production cost, and then increases the production cost of planar light source device 1.
[summary of the invention]
For overcoming the higher defective of the production cost of planar light source device in the prior art, the invention provides a kind of reflecting plate of tool scattering power, this reflecting plate can reduce the production cost of planar light source device.
The present invention also provides a kind of planar light source device that adopts said reflection plate.
Reflecting plate of the present invention comprises that a substrate and is positioned at the reflection horizon on the substrate, and a plurality of scattering netted dots wherein distribute on this reflection horizon.
Planar light source device of the present invention comprises a light guide plate, at least one light source and a reflecting plate, this light guide plate comprises at least one light entrance face, a light reflection surface and a light-emitting face relative with this light reflection surface that links to each other with this light entrance face, this at least one light source is positioned at this light guide plate light entrance face one side, this reflecting plate is positioned at this light guide plate light reflection surface one side, wherein this reflecting plate comprises that a substrate and is positioned at the reflection horizon on the substrate, and a plurality of scattering netted dots wherein distribute on this reflection horizon.
Compared to prior art, the present invention has following advantage: because the cost of reflecting plate is lower than light guide plate, even therefore can cause reflecting plate to damage when the wire mark scattering netted dot, its loss is also low than light guide plate, thereby reduces production costs; Simultaneously scattering netted dot is printed on the reflecting plate, thereby is easy to preserve owing to reflecting plate can not be out of shape because of suction.
[description of drawings]
Fig. 1 is the sectional view of existing planar light source device.
Fig. 2 is the sectional view of the light guide plate made from non-printing-type in the prior art.
Fig. 3 is the sectional view of reflecting plate of the present invention.
Fig. 4 is that reflecting plate of the present invention combines the effect of light synoptic diagram with light guide plate.
Fig. 5 is the sectional view of planar light source device of the present invention.
[embodiment]
Please refer to Fig. 3, is the sectional view of reflecting plate 23 of the present invention.Reflecting plate 23 is that the reflection horizon 233 that applies highly reflective material on substrate 232 forms.The material of substrate 232 is a silver (Ag), and also useable glass replaces, and reflection horizon 233 is white PET (PolyethyleneTerephthalate).Utilize fabrography to apply a plurality of scattering netted dots 231 on reflection horizon 233, this scattering netted dot 231 big or small identical is on the equidistant reflection horizon 233 that is evenly distributed on reflecting plate 23.The size of the scattering netted dot 231 of reflecting plate 23 of the present invention, density also can be with increasing with light source (figure do not show) distance, or the size of this scattering netted dot 231, density increase gradually in the middle of 233 2 side direction from the reflection horizon.
Please refer to Fig. 4, is that reflecting plate 23 of the present invention cooperates with light guide plate 22 light 3 effect synoptic diagram.This light guide plate 22 is the flat board of acryl (PMMA) material, and the light reflection surface 222 of this light guide plate 22 is smooth plane, and this light guide plate 22 also can be wedge type, and its thickness is with diminishing gradually away from light entrance face 221.Scattering netted dot 231 is close to the light reflection surface 222 of light guide plate 22, light 3 enters light guide plate 22 and propagates, incide scattering netted dot 231 surface and form many scattered beams (indicating) and penetrate from the light-emitting face 223 of light guide plate 22, the light trend is equivalent on the light reflection surface 222 that scattering netted dot 231 is arranged on light guide plate 22.Because the cost of reflecting plate 23 is lower than light guide plate 22, wire mark scattering netted dot 231 on the reflection horizon 233 of reflecting plate 23, even in the wire mark process, cause reflecting plate 23 to damage or the wire mark mistake, its loss is still low than wire mark scattering netted dot 231 on the light reflection surface 222 of light guide plate 23, is convenient to the designer simultaneously the design of scattering netted dot 231 is made amendment.
Please refer to Fig. 5, be the sectional view of planar light source device of the present invention, this planar light source device 2 comprises that diffuser plate 24 and that reflecting plate 23, that light source 21, that a light guide plate 22, is positioned at light guide plate 22 light entrance faces 221 1 sides is positioned at light guide plate 22 bottoms is positioned at light guide plate 22 tops is positioned at the prism plate 25 on diffuser plate 24 tops.Wherein this reflecting plate 23 comprises that a substrate 232 and is positioned at the reflection horizon 233 on the substrate 232, and a plurality of scattering netted dots 231 distribute on this reflection horizon 233.
Claims (10)
1. a reflecting plate comprises that a substrate and is positioned at the reflection horizon on the substrate, is characterized in that: a plurality of scattering netted dots of distribution on this reflection horizon.
2. reflecting plate as claimed in claim 1 is characterized in that: these a plurality of scattering netted dot sizes are identical, are evenly distributed on the reflection horizon.
3. reflecting plate as claimed in claim 1 is characterized in that: the size of these a plurality of scattering netted dots and distribution density are that one side direction opposite side increases setting gradually along the reflection horizon.
4. reflecting plate as claimed in claim 1 is characterized in that: the size of these a plurality of scattering netted dots and distribution density increase in the middle of two side direction gradually from the reflection horizon.
5. reflecting plate as claimed in claim 1 is characterized in that: this baseplate material is silver or glass.
6. reflecting plate as claimed in claim 1 is characterized in that: this reflection horizon is white PET.
7. planar light source device, comprise a light guide plate, at least one light source and a reflecting plate, this light guide plate comprises at least one light entrance face, a light reflection surface and a light-emitting face relative with this light reflection surface that links to each other with this light entrance face, this at least one light source is positioned at this light guide plate light entrance face one side, this reflecting plate is positioned at this light guide plate light reflection surface one side, it is characterized in that: this reflecting plate is each described reflecting plate in the claim 1 to 6.
8. planar light source device as claimed in claim 7 is characterized in that: the light reflection surface of this light guide plate is smooth plane.
9. planar light source device as claimed in claim 7 is characterized in that: it comprises that further one is positioned at the diffuser plate of light guide plate light-emitting face one side.
10. planar light source device as claimed in claim 9 is characterized in that: it comprises that further one is positioned at the prism plate of the relative light guide plate opposite side of diffuser plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021399182A CN1512198A (en) | 2002-12-27 | 2002-12-27 | Reflective plate and area source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021399182A CN1512198A (en) | 2002-12-27 | 2002-12-27 | Reflective plate and area source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1512198A true CN1512198A (en) | 2004-07-14 |
Family
ID=34231941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021399182A Pending CN1512198A (en) | 2002-12-27 | 2002-12-27 | Reflective plate and area source device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1512198A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620196A (en) * | 2012-03-14 | 2012-08-01 | 昆山市诚泰电气股份有限公司 | Light emitting diode (LED) flat lamp |
| CN102692672A (en) * | 2012-06-15 | 2012-09-26 | 昆山翰辉电子科技有限公司 | Colored light guide plate |
| CN102707369A (en) * | 2012-06-07 | 2012-10-03 | 昆山市诚泰电气股份有限公司 | Colored light guide plate and LED (Light Emitting Diode) plane light source provided with colored light guide plate |
| CN106200119A (en) * | 2011-03-29 | 2016-12-07 | 东丽株式会社 | Edge light type backlight white reflection film and use its back light for liquid crystal display device |
| CN107843951A (en) * | 2017-11-02 | 2018-03-27 | 合肥惠科金扬科技有限公司 | Light guide plate, backlight module and display device |
| CN108873129A (en) * | 2018-06-25 | 2018-11-23 | 深圳市华星光电技术有限公司 | Reflector plate, side entrance back module and liquid crystal display |
| CN113808478A (en) * | 2020-06-17 | 2021-12-17 | 北京小米移动软件有限公司 | Screen assembly, control method and control device thereof and electronic equipment |
-
2002
- 2002-12-27 CN CNA021399182A patent/CN1512198A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106200119A (en) * | 2011-03-29 | 2016-12-07 | 东丽株式会社 | Edge light type backlight white reflection film and use its back light for liquid crystal display device |
| CN106200119B (en) * | 2011-03-29 | 2020-01-21 | 东丽株式会社 | White reflective film for edge-light type backlight and backlight for liquid crystal display using same |
| CN102620196A (en) * | 2012-03-14 | 2012-08-01 | 昆山市诚泰电气股份有限公司 | Light emitting diode (LED) flat lamp |
| CN102707369A (en) * | 2012-06-07 | 2012-10-03 | 昆山市诚泰电气股份有限公司 | Colored light guide plate and LED (Light Emitting Diode) plane light source provided with colored light guide plate |
| CN102692672A (en) * | 2012-06-15 | 2012-09-26 | 昆山翰辉电子科技有限公司 | Colored light guide plate |
| CN107843951A (en) * | 2017-11-02 | 2018-03-27 | 合肥惠科金扬科技有限公司 | Light guide plate, backlight module and display device |
| CN108873129A (en) * | 2018-06-25 | 2018-11-23 | 深圳市华星光电技术有限公司 | Reflector plate, side entrance back module and liquid crystal display |
| WO2020000729A1 (en) * | 2018-06-25 | 2020-01-02 | 深圳市华星光电技术有限公司 | Reflective sheet, side-entry backlight module and liquid crystal display |
| CN113808478A (en) * | 2020-06-17 | 2021-12-17 | 北京小米移动软件有限公司 | Screen assembly, control method and control device thereof and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |