CN1828385A - Light-guiding plate - Google Patents
Light-guiding plate Download PDFInfo
- Publication number
- CN1828385A CN1828385A CN 200510033473 CN200510033473A CN1828385A CN 1828385 A CN1828385 A CN 1828385A CN 200510033473 CN200510033473 CN 200510033473 CN 200510033473 A CN200510033473 A CN 200510033473A CN 1828385 A CN1828385 A CN 1828385A
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- China
- Prior art keywords
- guide plate
- light guide
- holes
- light
- incidence surface
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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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- Light Guides In General And Applications Therefor (AREA)
- Planar Illumination Modules (AREA)
Abstract
Wherein, the plate comprises a light-input surface, a near light-output surface, a bottom opposite to the light-output surface, and a plurality of through holes every with at least one end through bottom or the light-output surface in the plate. This invention has high light usage.
Description
[technical field]
The invention relates to a kind of light guide plate.
[background technology]
Because the liquid crystal itself in the panel of LCD does not possess the characteristics of luminescence, thereby, for reaching display effect, a planar light source device is provided must for the LCD panel, as module backlight, its function is area source abundant to panel of LCD supply brightness and that be evenly distributed.
Prior art module backlight is made of light source, reflecting plate, light guide plate, diffuser plate and layers of prisms etc., and wherein light guide plate is the key component in the module backlight, its role is to guide incident light through light guide plate scattering and reflection and convert area source to.
, be a kind of synoptic diagram of existing module backlight please referring to Fig. 1.This module 200 backlight comprises light source 210, one light guide plate, 220, one reflecting plates 230 and a diffuser plate 240.This light guide plate 220 comprises the exiting surface 223 that an incidence surface 222, is adjacent with this incidence surface, and one with these exiting surface 223 opposed bottom surface 224.These light source 210 contiguous these incidence surfaces 222 are provided with, and these reflecting plate 230 contiguous these bottom surfaces 224 are provided with, and these diffuser plate 240 contiguous these exiting surfaces 223 are provided with.This bottom surface 224 is provided with equally distributed a plurality of circular diffusion point 226.But these diffusion point 226 usable reflections and diffusion are incident upon the light on it, thereby improve the light utilization efficiency and the outgoing light homogeneity of this light guide plate 220 and this module 200 backlight.
But the light that this light source 210 sends is after incidence surface 222 enters light guide plate 220, and part light needs to pass in the middle of light guide plate 220, and light path is longer, and needs can cause light loss through repeatedly reflection, thereby causes the light utilization efficiency of this light guide plate 220 to reduce.
[summary of the invention]
Be to solve the lower problem of prior art light guide plate light utilization efficiency, provide a kind of leaded light with high light utilization factor firm and hard for necessary.
A kind of technical scheme that solves this technical problem is: a kind of light guide plate is provided, and it comprises an incidence surface, an exiting surface adjacent with this incidence surface, and one with this exiting surface opposed bottom surface.This light guide plate inside has a plurality of through holes, and each through hole has at least an end to run through bottom surface or exiting surface.
The light guide plate of this technical scheme includes a plurality of through holes, and these a plurality of through holes can provide a plurality of reflections and plane of refraction for incident ray at a plurality of curved surfaces of the inner formation of this light guide plate.After the light that light source sends entered light guide plate, light can and reflect to exiting surface by these a plurality of camber reflections, can avoid oversize the reaching of light path repeatedly to reflect the light loss that causes, thereby can improve the light utilization efficiency of light guide plate.Light guide plate inside is provided with a plurality of through holes, can also alleviate the weight of light guide plate, meets the more and more light-weighted development trend of leaded light component more.
[description of drawings]
Fig. 1 is a kind of side view of existing light guide plate.
Fig. 2 is the cut-open view of light guide plate first embodiment of the present invention.
Fig. 3 is the vertical view of light guide plate first embodiment of the present invention.
Fig. 4 is the cut-open view of light guide plate second embodiment of the present invention.
Fig. 5 is the cut-open view of light guide plate the 3rd embodiment of the present invention.
Fig. 6 is the cut-open view of light guide plate the 4th embodiment of the present invention.
Fig. 7 is the cut-open view of light guide plate the 5th embodiment of the present invention.
Fig. 8 is the cut-open view of light guide plate the 6th embodiment of the present invention.
Fig. 9 is the cut-open view of light guide plate the 7th embodiment of the present invention.
Figure 10 is the cut-open view of light guide plate the 8th embodiment of the present invention.
Figure 11 is the cut-open view of light guide plate the 9th embodiment of the present invention.
[embodiment]
, be respectively the cut-open view and the vertical view of light guide plate first embodiment of the present invention please referring to Fig. 2 and Fig. 3.This light guide plate 10 comprises the exiting surface 14 that an incidence surface 12, one and this incidence surface 12 are adjacent, and one with this exiting surface opposed bottom surface 16.The material of this light guide plate 10 is transparent materials, as polymethylmethacrylate (Polymthyl Metharylate, PMMA) or polycarbonate (Polycarbonate, PC).When this light guide plate 10 was assembled into module backlight, its incidence surface 12 sides can be provided with at least one light source 19.
This light guide plate 10 also comprises a plurality of manholes 18.These a plurality of through holes 18 substantially parallel this light guide plate 10 inside that are arranged at, with the 16 one-tenth one fixed angle α in this bottom surface, the size of this angle [alpha] is 0＜α＜180 °.These a plurality of through holes 18 equidistantly are provided with, and its diameter is all identical.
These a plurality of through holes 18 can be incident ray a plurality of reflections and plane of refraction are provided at a plurality of curved surfaces of light guide plate 10 inner formation.After the light that light source 19 sends entered light guide plate 10, light can and reflect to exiting surface by these a plurality of camber reflections, can avoid oversize the reaching of light path repeatedly to reflect the light loss that causes, thereby can improve the light utilization efficiency of light guide plate 10.Light guide plate 10 inside are provided with a plurality of through holes 18, can also alleviate the weight of light guide plate 10, meet the more and more light-weighted development trend of leaded light component more.
, be the cut-open view of light guide plate second embodiment of the present invention please referring to Fig. 4.The difference of the light guide plate 10 of this light guide plate 20 and first embodiment is: the diameter and the disunity of a plurality of through holes 28 of this light guide plate 20, can according to bright dipping require to be set to along gradually wide away from incidence surface 22 directions, gradually narrow or width is alternately distributed.
, be the cut-open view of light guide plate the 3rd embodiment of the present invention please referring to Fig. 5.The difference of the light guide plate 10 of this light guide plate 30 and first embodiment is: a plurality of through holes 38 non-equidistant settings of this light guide plate 30, can according to bright dipping require to be set to along gradually close away from incidence surface 32 directions, gradually dredge or density is alternately distributed.
, be the cut-open view of light guide plate the 4th embodiment of the present invention please referring to Fig. 6.The difference of the light guide plate 10 of this light guide plate 40 and first embodiment is: a plurality of through holes 48 1 ends of this light guide plate 40 and the bottom surface of this light guide plate 40 46 connect, the other end then is distributed on the diagonal plane of this light guide plate 40, and these a plurality of through holes 48 are along edging up, gradually fall away from incidence surface 42 direction height or just being alternately distributed.
, be the cut-open view of light guide plate the 5th embodiment of the present invention please referring to Fig. 7.The difference of the light guide plate 10 of this light guide plate 50 and first embodiment is: a plurality of through holes 58 1 ends of this light guide plate 50 and the exiting surface of this light guide plate 50 54 connect, the other end then is distributed on the diagonal plane of this light guide plate 50, and these a plurality of through holes 58 are along edging up, gradually fall away from incidence surface 52 direction height or just being alternately distributed.
, be the cut-open view of light guide plate the 6th embodiment of the present invention please referring to Fig. 8.The difference of the light guide plate 10 of this light guide plate 60 and first embodiment is: a plurality of through holes 68 non-parallel settings of this light guide plate 60, the angle of itself and bottom surface 66 is β, the size of this angle β is 0＜β＜180 °, and along cumulative away from incidence surface 62 directions or decrescence.
, be the cut-open view of light guide plate the 7th embodiment of the present invention please referring to Fig. 9.The difference of the light guide plate 10 of this light guide plate 70 and first embodiment is: a plurality of through holes 78 of this light guide plate 70 cross one another, and the through hole 78 of intersection is positioned on the plane perpendicular to incidence surface (indicate).Certainly, the through hole 78 of intersection lays respectively on the different planes perpendicular to incidence surface, and its orthogonal projection crosses one another, and also can realize same effect.
, be the cut-open view of light guide plate the 8th embodiment of the present invention please referring to Figure 10.The difference of the light guide plate 10 of this light guide plate 80 and first embodiment is: a plurality of through holes 88 of this light guide plate 80 are the opening broken line shape of incidence surface 82 dorsad.The light guide plate 80 of present embodiment also has unexpected effect, promptly can be used for double-side module backlight, can strengthen two-sided luminous effect greatly.
, be the cut-open view of light guide plate the 9th embodiment of the present invention please referring to Figure 11.The difference of the light guide plate 10 of this light guide plate 90 and first embodiment is: a plurality of through holes 98 of this light guide plate 90 be shaped as taper shape.
Light guide plate of the present invention also has other numerous embodiments, and for example: a plurality of through holes also can and highly be made multiple combination and variation in conjunction with diameter, spacing; A plurality of through holes also can be highly identical, and its only an end run through the bottom surface or the exiting surface of light guide plate; The shape of a plurality of through holes also can be pyramid or truncated cone-shaped; The exiting surface of light guide plate and bottom surface can be provided with the diffusion point or do atomizing and handle.
Claims (15)
1. light guide plate, it comprises an incidence surface, an exiting surface adjacent with this incidence surface, and one with this exiting surface opposed bottom surface, it is characterized in that: this light guide plate inside has a plurality of through holes, each through hole has at least an end to run through bottom surface or exiting surface.
2. light guide plate as claimed in claim 1 is characterized in that: the material of this light guide plate is polymethylmethacrylate or polycarbonate.
3. light guide plate as claimed in claim 1 is characterized in that: these a plurality of through holes are isometrical manholes, and substantially parallel equidistant setting.
4. light guide plate as claimed in claim 1 is characterized in that: the diameter edge of these a plurality of through holes is gradually wide away from the incidence surface direction, gradually narrow or width is alternately distributed.
5. light guide plate as claimed in claim 1 is characterized in that: this a plurality of through holes edge is gradually close away from the incidence surface direction, gradually thin or density is alternately distributed.
6. light guide plate as claimed in claim 1 is characterized in that: these a plurality of through hole one ends and this bottom surface connect, and the other end then is distributed on the diagonal plane of this light guide plate, and these a plurality of through holes are along edging up away from incidence surface direction height, decrescence or just being alternately distributed.
7. light guide plate as claimed in claim 1 is characterized in that: these a plurality of through hole one ends and this exiting surface connect, and the other end then is distributed on the diagonal plane of this light guide plate, and these a plurality of through holes are along edging up away from incidence surface direction height, decrescence or just being alternately distributed.
8. light guide plate as claimed in claim 1 is characterized in that: these a plurality of through hole height are identical, and its only an end run through this exiting surface or bottom surface.
9. light guide plate as claimed in claim 1 is characterized in that: the corner dimension of these a plurality of through holes and bottom surface is along cumulative away from the incidence surface direction or decrescence.
10. light guide plate as claimed in claim 1 is characterized in that: these a plurality of through holes cross one another.
11. light guide plate as claimed in claim 1 is characterized in that: these a plurality of through holes are the opening broken line shape of incidence surface dorsad.
12. light guide plate as claimed in claim 1 is characterized in that: these a plurality of through holes be shaped as taper shape, pyramid or truncated cone-shaped.
13. light guide plate as claimed in claim 1 is characterized in that: this exiting surface is an atomization surface.
14. light guide plate as claimed in claim 1 is characterized in that: this bottom surface is provided with a plurality of diffusion points.
15. a light guide plate, it comprises an incidence surface, an exiting surface adjacent with this incidence surface, and one with this exiting surface opposed bottom surface, it is characterized in that: this light guide plate inside has a plurality of holes, and these a plurality of holes become a fixed angle with this bottom surface, and this angle is greater than 0 and less than 180 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100334732A CN100454098C (en) | 2005-03-05 | 2005-03-05 | Light-guiding plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100334732A CN100454098C (en) | 2005-03-05 | 2005-03-05 | Light-guiding plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1828385A true CN1828385A (en) | 2006-09-06 |
| CN100454098C CN100454098C (en) | 2009-01-21 |
Family
ID=36946852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100334732A Expired - Fee Related CN100454098C (en) | 2005-03-05 | 2005-03-05 | Light-guiding plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100454098C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017098718A1 (en) * | 2015-12-07 | 2017-06-15 | 富士フイルム株式会社 | Backlight unit |
| WO2019136572A1 (en) * | 2018-01-15 | 2019-07-18 | 璩泽明 | Light guide plate having array of light guide holes with high aspect ratio and manufacturing method therefor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6565225B2 (en) * | 2000-07-19 | 2003-05-20 | Sanyo Electric Co., Ltd. | Bar-shaped light guide, beam lighting device using the bar-shaped light guide, and surface lighting device using the beam lighting device |
| WO2002101448A1 (en) * | 2001-06-08 | 2002-12-19 | Fawoo Technology Co., Ltd. | Light guide plate used for backlight unit |
| JP2003257229A (en) * | 2002-02-27 | 2003-09-12 | Alps Electric Co Ltd | Backlight, front light, and liquid crystal display device |
| JP4216577B2 (en) * | 2002-12-20 | 2009-01-28 | シチズン電子株式会社 | Light guide plate |
| CN2763846Y (en) * | 2004-12-30 | 2006-03-08 | 群康科技(深圳)有限公司 | Light guiding board |
-
2005
- 2005-03-05 CN CNB2005100334732A patent/CN100454098C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017098718A1 (en) * | 2015-12-07 | 2017-06-15 | 富士フイルム株式会社 | Backlight unit |
| WO2019136572A1 (en) * | 2018-01-15 | 2019-07-18 | 璩泽明 | Light guide plate having array of light guide holes with high aspect ratio and manufacturing method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100454098C (en) | 2009-01-21 |
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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: 20090121 Termination date: 20170305 |