CN1661437A - Backlight module and plate of guiding light - Google Patents
Backlight module and plate of guiding light Download PDFInfo
- Publication number
- CN1661437A CN1661437A CN 200410015530 CN200410015530A CN1661437A CN 1661437 A CN1661437 A CN 1661437A CN 200410015530 CN200410015530 CN 200410015530 CN 200410015530 A CN200410015530 A CN 200410015530A CN 1661437 A CN1661437 A CN 1661437A
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- China
- Prior art keywords
- guide plate
- light guide
- light
- plate
- diffusion particle
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Abstract
The present invention discloses a backlight module, including a light source, a light-conducting plate, a light-reflecting plate, a light-collecting plate and a diffusion plate, in which said light-conducting plate has a light-entering surface, opposite undersurface and a light-exiting surface. Said light source is placed opposite to said light-entering surface, and said under surface is equipped with V-shaped groove structure, and said light-exiting surface is rough surface.
Description
[technical field]
The invention relates to a kind of backlight module and light guide plate thereof.
[background technology]
Liquid crystal indicator is a kind of non-self-emission display apparatus, it shows mainly passing through or the obstructed realization of coming by control light beam that external light source sends, therefore need corresponding backlight or preceding optical mode group, this backlight or preceding optical mode group can realize Presentation Function with the beam direction display panel that external light source sent.
Seeing also Fig. 1, is a kind of prior art backlight module.This backlight module 8 comprises a reflecting plate 81, a light guide plate 82, first diffuser plate 83, first solar panel 84, second solar panel 85, second diffuser plate 86, a fluorescent tube 87 and light source cover 88.This light guide plate 82 comprises an incidence surface 821, a bottom surface 822 and an exiting surface 823.Reflecting plate 81, light guide plate 82, first diffuser plate 83, first solar panel 84, second solar panel 85, second diffuser plate 86 are docile and obedient preface and are stacked, and fluorescent tube 87 and light source cover 88 place light guide plate incidence surface 821 sides.The a part of light that sends from fluorescent tube 87 directly enters light guide plate 82 from incidence surface 821, another part light enters in the light guide plate 82 from incidence surface 821 after light source cover 88 reflections, this incident light is through reflecting plate 81 reflection guiding first diffuser plate 83, light beam becomes diffuse light through 83 diffusions of first diffuser plate, diffusion light becomes the gathered light that brightness is concentrated through first solar panel 84 and second solar panel, 85 optically focused, and this gathered light becomes uniform surface light source after 86 diffusions of second scatter plate.
Because this backlight module 8 is formed by stacking by 83,86, two solar panels 84,85 of two diffuser plates and light guide plate 82, make this backlight module thicker, heavy, its cost is also higher simultaneously.
[summary of the invention]
For the module backlight that overcomes prior art is more thick and heavy, and the cost problem of higher, the invention provides a kind of more frivolous and module backlight that cost is low.
More thick and heavy for the light guide plate that overcomes prior art, and also problem of higher of cost the invention provides a kind of thin and low light guide plate of cost.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of module backlight is provided, comprise a light source, a light guide plate, a reflecting plate, a solar panel and a diffuser plate, wherein this light guide plate has an incidence surface, bottom surface and exiting surface, this light source this incidence surface relatively is provided with, this bottom surface is provided with V-type groove structure, and this exiting surface is a uneven surface.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of light guide plate is provided, comprises an incidence surface, bottom surface and exiting surface, this bottom surface is provided with V-type groove structure, and this exiting surface is a uneven surface.
Compared to prior art, because the bottom surface of light guide plate that backlight module of the present invention adopts is provided with V-type groove structure, the effect of V-type groove structure and solar panel is similar, and can reduce by a solar panel, and the exiting surface of light guide plate is uneven surface, the effect of uneven surface and diffuser plate is similar, thereby can reduce by a diffuser plate, when promptly adopting backlight modular structure of the present invention, a solar panel and a diffuser plate can be reduced, thereby thickness, weight and the cost of the product that uses this backlight module can be reduced.
[description of drawings]
Fig. 1 is the three-dimensional exploded view of a kind of prior art module backlight.
Fig. 2 is the three-dimensional exploded view of the present invention's module first embodiment backlight.
Fig. 3 is the three-dimensional exploded view of the present invention's module second embodiment backlight.
Fig. 4 is the diagrammatic cross-section of the present invention's module second embodiment backlight.
[embodiment]
Consulting Fig. 2, is the stereographic map of backlight module first embodiment of the present invention.This backlight module 1 comprises a reflecting plate 11, a light guide plate 12, a solar panel 13, a diffuser plate 14, a light source 15 and light source cover 16.Light guide plate 12 comprises an incidence surface 121, bottom surface 122 and exiting surface 123.The bottom surface 122 of light guide plate 12 is provided with and light guide plate 11 integrated V-type groove structures, and the exiting surface 123 of light guide plate 12 is and the integrated uneven surface of light guide plate.The light beam that fluorescent tube 15 sends enters from the incidence surface 121 of light guide plate 12, penetrate from exiting surface 123 through reflecting plate 11 reflection and behind the V-type groove structure optically focused of bottom surface 122, because exiting surface 123 is a uneven surface, thereby this light beam forms scattered light comparatively uniformly to all directions scattering.But this scattered light through solar panel 13 once more optically focused, become the uniform area light source that the feed flow crystal panel is used once more after the scattering through diffuser plate 14.
Seeing also Fig. 3 and Fig. 4, is respectively the stereographic map and the sectional view of backlight module second embodiment of the present invention.The backlight module 3 of second embodiment and the backlight module 1 of above-mentioned first embodiment are roughly the same, also comprise a reflecting plate 31, one light guide plate 32, one solar panel 33, one diffuser plate 34, one light source 35 and light source cover 36, its difference is, the diffusion particle of mainly being made by silicon dioxide 325 is arranged in this light guide plate 32, this diffusion particle 325 with incident beam to all directions scattering, therefore can improve the diffusivity of light beam, the size of this diffusion particle 325 and quantity can influence the diffusivity of light guide plate 32, the many more diffusion effects of the big more quantity of particle can be better, the visual angle also can be big more, but the brightness meeting reduces, by rationally choosing the size of diffusion particle 325, can realize the optimization of light guide plate 32, diffusion particle 325 sizes of present embodiment are between 1 μ m～50 μ m, light are from the light source 35 strong weak more situation of distance light more in the corresponding light guide plate 32, and the size or density of this diffusion particle 325 should be designed to improve the homogeneity of light beam along increasing gradually away from the incidence surface direction with this.
Claims (10)
1. backlight module, it comprises a light source, a light guide plate, a reflecting plate, a solar panel and a diffuser plate, wherein this light guide plate has an incidence surface, bottom surface and exiting surface, this light source this incidence surface relatively is provided with, it is characterized in that: the bottom surface of this light guide plate is provided with V-type groove structure, and this exiting surface is a uneven surface.
2. module backlight as claimed in claim 1 is characterized in that: in this light guide plate diffusion particle is arranged.
3. module backlight as claimed in claim 2 is characterized in that: this diffusion particle is mainly made by silicon dioxide.
4. module backlight as claimed in claim 2 is characterized in that: the size of this diffusion particle is between 1 μ m～50 μ m.
5. module backlight as claimed in claim 2 is characterized in that: the size or density of this diffusion particle is along increasing gradually away from the incidence surface direction.
6. light guide plate, it comprises an incidence surface, bottom surface and exiting surface, it is characterized in that: this bottom surface is provided with V-type groove structure, and this exiting surface is a uneven surface.
7. light guide plate as claimed in claim 6 is characterized in that: in this light guide plate diffusion particle is arranged.
8. light guide plate as claimed in claim 7 is characterized in that: this diffusion particle is mainly made by silicon dioxide.
9. light guide plate as claimed in claim 7 is characterized in that: the size of this diffusion particle is between 1 μ m～50 μ m.
10. light guide plate as claimed in claim 7 is characterized in that: the size or density of this diffusion particle is along increasing gradually away from the incidence surface direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410015530XA CN100426073C (en) | 2004-02-27 | 2004-02-27 | Backlight module and plate of guiding light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410015530XA CN100426073C (en) | 2004-02-27 | 2004-02-27 | Backlight module and plate of guiding light |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1661437A true CN1661437A (en) | 2005-08-31 |
| CN100426073C CN100426073C (en) | 2008-10-15 |
Family
ID=35010839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410015530XA Expired - Fee Related CN100426073C (en) | 2004-02-27 | 2004-02-27 | Backlight module and plate of guiding light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100426073C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129097A (en) * | 2010-12-28 | 2011-07-20 | 友达光电股份有限公司 | Backlight module, light guide device and light guide plate manufacturing method |
| CN108267810A (en) * | 2018-03-02 | 2018-07-10 | 深圳创维－Rgb电子有限公司 | A kind of light guide plate, backlight module and display equipment |
| US11294220B2 (en) * | 2018-06-29 | 2022-04-05 | Boe Technology Group Co., Ltd. | Display panel and method for manufacturing same, and display device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5375234B2 (en) * | 2009-03-19 | 2013-12-25 | 住友化学株式会社 | Edge light type lighting device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5542017A (en) * | 1991-09-27 | 1996-07-30 | Koike; Yasuhiro | Light scattering light guide and applied optical apparatuses |
| US5461547A (en) * | 1993-07-20 | 1995-10-24 | Precision Lamp, Inc. | Flat panel display lighting system |
| JP3734547B2 (en) * | 1995-11-21 | 2006-01-11 | シャープ株式会社 | Method for manufacturing light guide plate and method for manufacturing backlight device |
| CN2408471Y (en) * | 2000-02-17 | 2000-11-29 | 东莞宇宙电子有限公司 | Two-way light conductive plate |
| AUPR518801A0 (en) * | 2001-05-22 | 2001-06-14 | Poly Optics Australia Pty Ltd | Side scattering fibre-optic and method of manufacturing a side scattering fibre-optic |
-
2004
- 2004-02-27 CN CNB200410015530XA patent/CN100426073C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129097A (en) * | 2010-12-28 | 2011-07-20 | 友达光电股份有限公司 | Backlight module, light guide device and light guide plate manufacturing method |
| CN102129097B (en) * | 2010-12-28 | 2013-07-03 | 友达光电股份有限公司 | Backlight module, light guide device and light guide plate manufacturing method |
| CN108267810A (en) * | 2018-03-02 | 2018-07-10 | 深圳创维－Rgb电子有限公司 | A kind of light guide plate, backlight module and display equipment |
| US11294220B2 (en) * | 2018-06-29 | 2022-04-05 | Boe Technology Group Co., Ltd. | Display panel and method for manufacturing same, and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100426073C (en) | 2008-10-15 |
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Granted publication date: 20081015 Termination date: 20180227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |