CN100468157C - Light guidance plate - Google Patents
Light guidance plate Download PDFInfo
- Publication number
- CN100468157C CN100468157C CNB2005101009748A CN200510100974A CN100468157C CN 100468157 C CN100468157 C CN 100468157C CN B2005101009748 A CNB2005101009748 A CN B2005101009748A CN 200510100974 A CN200510100974 A CN 200510100974A CN 100468157 C CN100468157 C CN 100468157C
- Authority
- CN
- China
- Prior art keywords
- flute profile
- microstructure
- guide plate
- light guide
- profile microstructure
- 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 - Fee Related
Links
Images
Abstract
A light guide plate consists of a light incoming surface, a light outgoing surface connected with light incoming surface and bottom surface being set in opposite to light outgoing surface. It is featured as arranging the first groove shaped microstructure the second groove shaped microstructure on light incoming surface and crossing two said microstructures with each other.
Description
[technical field]
The present invention relates to a kind of light guide plate.
[background technology]
Advantage such as liquid crystal indicator has gently, approaches, power consumption is little is widely used in the modernized information equipment.Because the liquid crystal panel itself in the liquid crystal indicator is not had a characteristics of luminescence, for reaching display effect, must provide a planar light source device to liquid crystal panel, as module backlight, the function of this planar light source device is to provide brightness area source adequately and uniformly to liquid crystal panel.Light guide plate is the key element in the planar light source device, and it must possess the good optical design, so that the light that light guide plate can guide light source to send is converted to brightness and colourity all can reach necessarily required area source.
A kind of light guide plate of the prior art, it comprises an incidence surface, one exiting surface that links to each other with incidence surface reaches and the exiting surface opposed bottom surface, this incidence surface is provided with the microstructure perpendicular to exiting surface, this microstructure is generally V-shaped groove, the light that light source sends enters the light guide plate internal transmission through incidence surface, and appear from exiting surface, its shortcoming is to be easy to generate light beam after light is by the incidence surface beam split, halation and blanking bar, after adding the bottom surface of light guide plate reflection, can't improve visual effect effectively, thereby feasible inhomogeneous from the light of exiting surface outgoing, cause the emitting brightness of light guide plate inhomogeneous.
[summary of the invention]
In view of this, provide the uniform leaded light of a kind of emitting brightness firm and hard for necessary.
A kind of light guide plate comprises an incidence surface, an exiting surface that links to each other with incidence surface and one and this exiting surface opposed bottom surface, this incidence surface is provided with the second flute profile microstructure and a plurality of first flute profile microstructure, and this second flute profile microstructure and each first flute profile microstructure intersect.
Compared with prior art, the incidence surface of this light guide plate is provided with the first flute profile microstructure and the second flute profile microstructure on the both direction, scattering can take place when being incident on this first flute profile microstructure and the second flute profile microstructure in light, therefore, when extraneous light is incident on the incidence surface, just can carry out beam split being parallel on exiting surface direction and other direction, reach preferable spectrophotometric result, can not produce light beam, halation and blanking bar phenomenon, thereby improve the homogeneity of the emitting brightness of light guide plate.
[description of drawings]
Fig. 1 is the schematic perspective view of first embodiment of the invention light guide plate.
Fig. 2 is the enlarged drawing of II part among Fig. 1.
Fig. 3 is the partial schematic diagram of second embodiment of the invention light guide plate.
Fig. 4 is the partial schematic diagram of third embodiment of the invention light guide plate.
[embodiment]
See also Fig. 1 and Fig. 2, it is the light guide plate 10 that first embodiment of the invention provides, exiting surface 14 and and exiting surface 14 opposed bottom surface 16 that this light guide plate 10 comprises incidence surface 12, links to each other with incidence surface 12.
This light guide plate 10 is plate shaped, and extraneous light enters light guide plate 10 inside through incidence surface 12, and appear from exiting surface 14 16 reflection backs in the bottom surface.
This incidence surface 12 is provided with a plurality of first flute profile microstructures 121 and a plurality of second flute profile microstructure 122, wherein, the bearing of trend of the first flute profile microstructure 121 is perpendicular to exiting surface 14, the second flute profile microstructure, 122 bearing of trends are parallel to exiting surface 14, promptly the first flute profile microstructure 121 and the second flute profile microstructure 122 intersect vertically, present embodiment is the example explanation so that two microstructures 122 to be set, and this second flute profile microstructure 122 also can be one.
This first flute profile microstructure 121 is the V-shaped groove of continuous distribution, and these two second flute profile microstructures 122 are the arc-shaped slot that is provided with at interval, and the degree of depth of this second flute profile microstructure 122 is less than the degree of depth of the first flute profile microstructure 121.
Owing to have the first flute profile microstructure 121, the second flute profile microstructure 122 on the both direction on the incidence surface 12, scattering can take place when being incident on this first flute profile microstructure and the second flute profile microstructure in light, therefore, when extraneous light is incident on the incidence surface 12, just can on parallel exiting surface 14 directions and other direction, carry out beam split, reach preferable spectrophotometric result, thereby can not have and utilize the homogeneity that improves light guide plate 10 emitting brightness in light guide plate 10 inner light beam, halation and the blanking bar phenomenons of producing.
The bearing of trend of this second flute profile microstructure 122 also can not parallel exiting surface 14, and promptly the angle between the second flute profile microstructure 122 and the first flute profile microstructure 121 is not equal to 90 °.
In addition, the 3rd microstructure 161 can be set to increase the emitting brightness and the homogeneity of exiting surface 14 on bottom surface 16, the 3rd microstructure 161 is site, V-shaped groove, U-lag or other shape.
This light guide plate 10 also can be wedge structure, and its thickness is reduced to the other end relative with incidence surface 12 gradually by incidence surface 12 1 ends.
As shown in Figure 3, it is the light guide plate 20 that second embodiment of the invention provided, exiting surface 24 and and exiting surface 24 opposed bottom surface 26 that this light guide plate 20 comprises incidence surface 22, links to each other with incidence surface 22.
This light guide plate 20 is plate shaped, and this incidence surface 22 is provided with the first flute profile microstructure 221 and the second flute profile microstructure 222.
These first flute profile microstructure, 221 bearing of trends are perpendicular to exiting surface 24, and these second flute profile microstructure, 222 bearing of trends are parallel to exiting surface 24.The first flute profile microstructure 221 is the V-shaped groove that is provided with continuously, and the second flute profile microstructure 222 is the dovetail groove that is provided with at interval, and the degree of depth of this second flute profile microstructure 222 is less than the degree of depth of the first flute profile microstructure 221.
In addition, the 3rd microstructure 261 can be set to increase the emitting brightness and the homogeneity of light guide plate 20 on bottom surface 26, the 3rd microstructure 261 is site, V-shaped groove, U-lag or other shape.
As shown in Figure 4, the light guide plate 30 that it provides for third embodiment of the invention, this light guide plate 30 comprises incidence surface 32, exiting surface 34 and bottom surface 36.
This incidence surface 32 is provided with the first flute profile microstructure 321 and the second flute profile microstructure 322 that intersects, and these first flute profile microstructure, 321 bearing of trends are parallel to exiting surface 34 perpendicular to exiting surface 34, the second flute profile microstructure, 322 bearing of trends.
This first flute profile microstructure 321 is the V-shaped groove that is provided with continuously, and this second flute profile microstructure 322 is the V-shaped groove that is provided with at interval, and the degree of depth of this second flute profile microstructure 322 is less than the degree of depth of the first flute profile microstructure 321.
In addition, the 3rd microstructure 361 also can be set to increase the emitting brightness and the homogeneity of light guide plate 30 on bottom surface 36, the 3rd microstructure 361 is site, V-shaped groove, U-lag or other shape.
Certainly, this first flute profile microstructure 121,221 and 321 also can be the microstructure of other shape, as U-lag, rectangular slot or arc-shaped slot etc., this second flute profile microstructure 122,222 and 322 also can be the microstructure of other shape, as rectangular slot, U-lag etc.
The material of this light guide plate 10,20,30 can be acryl resin, polycarbonate or polyvinyl resin etc.
In addition, those skilled in the art can also do other variation in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.
Claims (10)
1. light guide plate, comprise an incidence surface, an exiting surface that links to each other with this incidence surface and one and this exiting surface opposed bottom surface, this incidence surface is provided with the second flute profile microstructure and a plurality of first flute profile microstructure, it is characterized in that: this second flute profile microstructure and each first flute profile microstructure intersect.
2. light guide plate as claimed in claim 1 is characterized in that: the bearing of trend of the described first flute profile microstructure is perpendicular to exiting surface.
3. light guide plate as claimed in claim 1 is characterized in that: the bearing of trend of the described second flute profile microstructure and the angle of exiting surface are less than 90 °.
4. light guide plate as claimed in claim 1 is characterized in that: the described first flute profile microstructure is V-shaped groove, U-lag, rectangular slot or arc-shaped slot.
5. light guide plate as claimed in claim 1 is characterized in that: the described second flute profile microstructure is V-shaped groove, arc-shaped slot, rectangular slot, dovetail groove or U-lag.
6. light guide plate as claimed in claim 1 is characterized in that: the described second flute profile microstructure is one.
7. light guide plate as claimed in claim 1 is characterized in that: the described second flute profile microstructure is a plurality of, has one between the adjacent second flute profile microstructure at interval.
8. light guide plate as claimed in claim 1 is characterized in that: described light guide plate is plate shaped or wedge shape.
9. light guide plate as claimed in claim 1 is characterized in that: described bottom surface is provided with the 3rd microstructure.
10. light guide plate as claimed in claim 9 is characterized in that: described the 3rd microstructure is V-shaped groove, U-lag or site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101009748A CN100468157C (en) | 2005-11-01 | 2005-11-01 | Light guidance plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101009748A CN100468157C (en) | 2005-11-01 | 2005-11-01 | Light guidance plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1959491A CN1959491A (en) | 2007-05-09 |
| CN100468157C true CN100468157C (en) | 2009-03-11 |
Family
ID=38071258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101009748A Expired - Fee Related CN100468157C (en) | 2005-11-01 | 2005-11-01 | Light guidance plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100468157C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374414A (en) * | 2010-08-20 | 2012-03-14 | 奇菱科技股份有限公司 | Illumination device |
| CN107621733A (en) * | 2017-10-30 | 2018-01-23 | 深圳市巨世科技股份有限公司 | Side entrance back module |
| CN111352273A (en) * | 2020-03-16 | 2020-06-30 | 深圳市南极光电子科技股份有限公司 | Dig hole screen backlight |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5997148A (en) * | 1997-06-04 | 1999-12-07 | Enplas Corporation | Surface light source device of side light type |
| JP2000306411A (en) * | 1999-04-23 | 2000-11-02 | Enplas Corp | Light guide plate, sidelight surface light source device and liquid-crystal display device |
| CN2544305Y (en) * | 2002-05-28 | 2003-04-09 | 三和企业股份有限公司 | Light guiding board structure |
| JP2004319340A (en) * | 2003-04-17 | 2004-11-11 | Kawaguchiko Seimitsu Co Ltd | Backlight unit |
| CN1609682A (en) * | 2003-10-23 | 2005-04-27 | 鸿富锦精密工业（深圳）有限公司 | Area illuminating apparatus and light conducting plate thereof |
-
2005
- 2005-11-01 CN CNB2005101009748A patent/CN100468157C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5997148A (en) * | 1997-06-04 | 1999-12-07 | Enplas Corporation | Surface light source device of side light type |
| JP2000306411A (en) * | 1999-04-23 | 2000-11-02 | Enplas Corp | Light guide plate, sidelight surface light source device and liquid-crystal display device |
| CN2544305Y (en) * | 2002-05-28 | 2003-04-09 | 三和企业股份有限公司 | Light guiding board structure |
| JP2004319340A (en) * | 2003-04-17 | 2004-11-11 | Kawaguchiko Seimitsu Co Ltd | Backlight unit |
| CN1609682A (en) * | 2003-10-23 | 2005-04-27 | 鸿富锦精密工业（深圳）有限公司 | Area illuminating apparatus and light conducting plate thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1959491A (en) | 2007-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7401967B2 (en) | Prism sheet and backlight module incorporating same | |
| CN100498389C (en) | Light conducting plate and back light module | |
| US6074069A (en) | Backlight source device with circular arc diffusion units | |
| CN100426087C (en) | Light guide plate and backlight module using same | |
| US7254308B2 (en) | Light guide plate and backlight module using the same | |
| CN1932602A (en) | Light-conducting plate | |
| CN202196197U (en) | Irregularly-shaped light guide plate, backlight module and liquid crystal display device | |
| KR20080031958A (en) | Turning film having variable pitch | |
| CN102245960A (en) | Light guide, backlight and display | |
| CN101782218B (en) | Light guide plate, backlight module and light transmission method | |
| TW200702838A (en) | Light guide plate and backlight device | |
| CN200976055Y (en) | Light conducting plate and backlight module | |
| CN202275180U (en) | Light guide plate, back light module group and liquid crystal display device | |
| CN104763949A (en) | Backlight module and display device | |
| US7303338B2 (en) | Light guide plate with holes | |
| CN103901528A (en) | Surface light source device and its light guide plate | |
| CN101418930A (en) | Area source device for LED | |
| CN103672537B (en) | A kind of LED lamp bar, backlight source module and display unit | |
| CN100468157C (en) | Light guidance plate | |
| CN1619373A (en) | Light conducting board and back light module | |
| CN101649998B (en) | Optical element and backlight unit and liquid crystal display having the same | |
| CN205139533U (en) | Backlight module and display device | |
| CN105473933A (en) | Light guide plate, planar light source device, and transmissive image display device | |
| CN102518986A (en) | Backlight module and display device | |
| Käläntär | Modulation of viewing angle on an LCD surface through backlight optics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20091201 |