CN1627152A - Light guiding plate - Google Patents
Light guiding plate Download PDFInfo
- Publication number
- CN1627152A CN1627152A CN 200310112593 CN200310112593A CN1627152A CN 1627152 A CN1627152 A CN 1627152A CN 200310112593 CN200310112593 CN 200310112593 CN 200310112593 A CN200310112593 A CN 200310112593A CN 1627152 A CN1627152 A CN 1627152A
- Authority
- CN
- China
- Prior art keywords
- shaped groove
- guide plate
- light guide
- incidence surface
- light
- 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.)
- Granted
Links
Images
Abstract
This invention provides a light conducting plate for solving the problem of low light exit and low uniformlity, which includes a light inlet face receiving incident light beams, an exit face conducting light out and a bottom opposite to the exit face, said inlet face is crossed with the exit face, multiple v-shaped grooves parallel to said inlet face and multiple v-shaped grooves vertical to said inlet face are set on the bottom.
Description
[technical field]
The invention relates to a kind of light guide plate, especially about a kind of light guide plate that is used for LCD.
[background technology]
In recent years, along with the colorize and the maximization of LCD, its application is more extensive, as notebook computer, various desk-top computer, LCD TV etc.Because liquid crystal itself can not be luminous, need utilize the light source of a light-source system as LCD, as module backlight (Backlight Module), wherein, light guide plate is the significant components in the module backlight, be used to guide the transmission direction of sending light beam from light source, convert line source or pointolite to the area source outgoing.
A kind of light guide plate of prior art as shown in Figure 1, this light guide plate 10 comprises an incidence surface 101, an exiting surface 102 that links to each other with this incidence surface 101 and one and these exiting surface 102 opposed bottom surface 103.Wherein, this bottom surface 103 is provided with multirow V-shaped groove 11, and the direction of this V-shaped groove 11 is parallel with the direction of this incidence surface 101.
Please together consulting Fig. 2, is the side view and the index path of light guide plate shown in Figure 1.Light imports this light guide plate 10 through this incidence surface 101, part light (figure does not show) is arranged directly by exiting surface 102 outgoing of this light guide plate 10, and part light is the bottom surface 103 of this light guide plate 10 of directive then, and reflects in this bottom surface 103.Because this bottom surface 103 is provided with V-shaped groove 11, can destroy the total reflection condition that light takes place in this bottom surface 103, make light reflect along different directions, and part light total reflection can not take place at the exiting surface 102 of this light guide plate 10, final light can be from these exiting surface 102 outgoing.In addition, reflection direction after the light reflection can be controlled, thereby the beam projecting scope of whole light guide plate can be controlled by the drift angle size that changes this V-shaped groove 11.Yet, these light guide plate 10 bottom surfaces 103 only are provided with the V-shaped groove 11 of single direction, be V-shaped groove 11 parallel these incidence surfaces 101, though can improve the emitting brightness and the uniformity coefficient of light guide plate 10 by the drift angle size that changes this V-shaped groove 11, but because the direction of incident ray is from all directions, the V-shaped groove 11 of single direction setting can not be fully with light refraction, reflect away, still can cause the part light losing, can't satisfy the requirement of the emitting brightness and the uniformity coefficient of whole light guide plate.
[summary of the invention]
In order to overcome the lower defective of prior art light guide plate outgoing light homogeneity and brightness, the invention provides the light guide plate that a kind of outgoing light homogeneity is higher and brightness is higher.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of light guide plate is provided, comprise exiting surface that an incidence surface that is used to receive irradiating light beam, is derived light beam and one and this exiting surface opposed bottom surface, this incidence surface and this exiting surface intersect, and this bottom surface is provided with multirow and is parallel to the V-shaped groove of this incidence surface and the multirow V-shaped groove perpendicular to this incidence surface.
Compare with prior art, because light guide plate of the present invention is except that being provided with the V-shaped groove that multirow is parallel to this incidence surface in its bottom surface, the V-shaped groove of multirow perpendicular to this incidence surface also is set in its bottom surface, can destroy the condition of incident ray better in bottom surface of light guide plate generation total reflection, more rays is reflexed to exiting surface, improve the emitting brightness and the uniformity coefficient of light guide plate.
[description of drawings]
Fig. 1 is a kind of stereographic map of prior art light guide plate.
Fig. 2 is the side view and the light path synoptic diagram of light guide plate shown in Figure 1.
Fig. 3 is the stereographic map of light guide plate first embodiment of the present invention.
Fig. 4 is the bottom isometric view of light guide plate shown in Figure 3.
Fig. 5 is the bottom surface V-shaped groove distribution schematic diagram of light guide plate shown in Figure 3.
Fig. 6 is the bottom surface V-shaped groove distribution schematic diagram of light guide plate second embodiment of the present invention.
Fig. 7 is the bottom surface V-shaped groove distribution schematic diagram of light guide plate the 3rd embodiment of the present invention.
Fig. 8 is the bottom surface V-shaped groove distribution schematic diagram of light guide plate the 4th embodiment of the present invention.
Fig. 9 is the bottom surface V-shaped groove distribution schematic diagram of light guide plate the 5th embodiment of the present invention.
Figure 10 is the bottom surface V-shaped groove distribution schematic diagram of light guide plate the 6th embodiment of the present invention.
[embodiment]
Seeing also Fig. 3, is the schematic perspective view of first embodiment of light guide plate of the present invention.This light guide plate 2 comprises an incidence surface 21, enters light guide plate 2 in order to guiding light; One exiting surface 22 is in order to derive light and one and these exiting surface 22 opposed bottom surface 23.Wherein, this light guide plate 2 is plate shaped light guide plate, and material is a polymeric resin material, as polyacrylic resin, polycarbonate, polyvinyl resin or polymethylmethacrylate, also can make with glass.This exiting surface 22 has a plurality of prism structures 221, and this prism structure 221 is parallel with this incidence surface 21.Multirow V-shaped groove 231,232 is set on this bottom surface 23.
Seeing also Fig. 4 and Fig. 5, is respectively the bottom surface schematic perspective view and the bottom surface V-shaped groove distribution schematic diagram of light guide plate 2 of the present invention.These V-shaped groove 231 parallel these incidence surfaces 21 are arranged near these incidence surface 21 places.This V-shaped groove 232 is perpendicular to this incidence surface 21, and is arranged on away from this incidence surface one side.
When light imports these light guide plate 20 by incidence surface 21 and 23 reflects in the bottom surface, the V-shaped groove 231 of this parallel incidence surface 21 destroys the condition of light 23 generation total reflections in the bottom surface, makes light 23 total reflection can't take place but reflect to different directions in the bottom surface.Total reflection can not take place at exiting surface 22 in this reflection ray yet, thereby can be penetrated by this exiting surface 22, and the emergent ray deflection can improve the emitting brightness and the uniformity coefficient of light guide plate 2 away from these incidence surface 21 1 sides.
Light is incident upon V-shaped groove 232 and reflects, and light reflected has the effect of optically focused, incident ray can be condensed back reflection and penetrate to exiting surface 22 and by exiting surface 22.Therefore, light guide plate of the present invention can further improve emitting brightness.
The structure of light guide plate 2 of the present invention is not limited to first embodiment, the V-shaped groove 231 of this parallel incidence surface 21 and the V-shaped groove 232 of this vertical incidence surface can change with respect to the position of incidence surface 21, promptly the V-shaped groove 232 of this vertical incidence surface 21 is provided with near this incidence surface 21, and the V-shaped groove 231 of this parallel incidence surface 21 is provided with away from this incidence surface 21.In addition, this spacing that is parallel to the V-shaped groove 231 of incidence surface 21 can be arranged with underrange, more away from this incidence surface, the spacing that this V-shaped groove is 231 is more little, this structure can improve emitting brightness and the uniformity coefficient of light guide plate away from the zone of light source (figure does not show) better, thereby makes the outgoing light homogeneity of whole light guide plate 2 and emitting brightness improve.
Please together consulting Fig. 6 to Figure 10, is respectively the bottom surface V-shaped groove distribution schematic diagram of light guide plate second to the 6th embodiment of the present invention.
As seen from Figure 6, in light guide plate second embodiment of the present invention, two groups of V-shaped grooves that are parallel to incidence surface 31 are separately positioned near incidence surface 31 with away from incidence surface 31 1 sides, are arranged on two groups of centres that are parallel to the V-shaped groove of incidence surface 31 perpendicular to the V-shaped groove of incidence surface 31.
As seen from Figure 7, in light guide plate the 3rd embodiment of the present invention, the V-shaped groove that is parallel to incidence surface 41 is arranged on a side 44 1 sides away from light guide plate 4, is arranged on a side near side 44 perpendicular to the V-shaped groove of incidence surface 41.And, be parallel to the V-shaped groove of incidence surface 41 and also can exchange with respect to the position distribution of side 44 perpendicular to the V-shaped groove of incidence surface 41.
As seen from Figure 8, in light guide plate the 4th embodiment of the present invention, two groups of V-shaped grooves perpendicular to incidence surface 51 are separately positioned near a side of light guide plate 5 one sides 54 with away from a side of side 54, and the V-shaped groove that is parallel to incidence surface 51 is arranged on two groups of centres perpendicular to the V-shaped groove of incidence surface 51.
As seen from Figure 9, in light guide plate the 5th embodiment of the present invention, two groups of V-shaped grooves that are parallel to incidence surface 61 are separately positioned near a side of light guide plate 6 one sides 64 with away from a side of side 64, are arranged on two groups of centres that are parallel to the V-shaped groove of incidence surface 61 perpendicular to the V-shaped groove of incidence surface 61.
As seen from Figure 10, in light guide plate the 6th embodiment of the present invention, be parallel to the V-shaped groove of incidence surface 71 and intersect mutually perpendicular to the V-shaped groove of incidence surface 71, and the V-shaped groove that is parallel to incidence surface 71 is the closer to incidence surface 71, its spacing is big more.
The leaded light principle of second to the 6th embodiment is identical with first embodiment.
The shape of light guide plate of the present invention also can be a wedge shape, and the distribution of the prism structure of exiting surface also can change, and as the closer to incidence surface, the spacing between prism structure is big more.Spacing also can change between the V-shaped groove of the parallel incidence surface of bottom surface, and the closer to incidence surface, the spacing between V-shaped groove is more little.In addition, the variation of the prism structure of exiting surface also can combine with the variation of the V-shaped groove structure of bottom surface, can be according to the required design of reality.
Light guide plate of the present invention is by being provided with the V-shaped groove that is parallel to incidence surface simultaneously and perpendicular to the V-shaped groove of incidence surface in its bottom surface, the V-shaped groove that only is parallel to incidence surface compared to prior art in the bottom surface of light guide plate setting, the V-shaped groove that is parallel to incidence surface except that the tool setting can better improve light guide plate emitting brightness and the uniformity coefficient, and the emitting brightness that also can further improve light guide plate perpendicular to the V-shaped groove of incidence surface is set.
Claims (6)
1. light guide plate, comprise that one is used to receive the incidence surface of irradiating light beam, one exiting surface that light beam is derived and one and this exiting surface opposed bottom surface, this incidence surface and this exiting surface intersect, this bottom surface is provided with the V-shaped groove that multirow is parallel to this incidence surface, it is characterized in that: this bottom surface is provided with the V-shaped groove of multirow perpendicular to this incidence surface simultaneously.
2. light guide plate as claimed in claim 1 is characterized in that: this multirow is parallel to the V-shaped groove of this incidence surface and this multirow and intersects perpendicular to the V-shaped groove of this incidence surface.
3. light guide plate as claimed in claim 1 is characterized in that: it is the zones of different of this bottom surface of distributing perpendicular to the V-shaped groove of this incidence surface that this multirow is parallel to the V-shaped groove of this incidence surface and this multirow.
4. light guide plate as claimed in claim 3 is characterized in that: it is spaced apart perpendicular to the V-shaped groove of this incidence surface that this multirow is parallel to the V-shaped groove of this incidence surface and this multirow.
5. light guide plate as claimed in claim 1 is characterized in that: this multirow is parallel to that spacing equates between the V-shaped groove of this incidence surface.
6. light guide plate as claimed in claim 1 is characterized in that: the V-shaped groove that this multirow is parallel to this incidence surface is big more the closer to this incidence surface spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101125932A CN100395610C (en) | 2003-12-11 | 2003-12-11 | Light guiding plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101125932A CN100395610C (en) | 2003-12-11 | 2003-12-11 | Light guiding plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1627152A true CN1627152A (en) | 2005-06-15 |
| CN100395610C CN100395610C (en) | 2008-06-18 |
Family
ID=34759837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101125932A Expired - Fee Related CN100395610C (en) | 2003-12-11 | 2003-12-11 | Light guiding plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100395610C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460959C (en) * | 2006-03-30 | 2009-02-11 | 友达光电股份有限公司 | Backlight module and LCD using same |
| CN101334550B (en) * | 2007-06-29 | 2010-08-25 | 群康科技(深圳)有限公司 | Liquid crystal display device and driving method thereof |
| CN102095141A (en) * | 2011-02-22 | 2011-06-15 | 青岛海信电器股份有限公司 | Backlight module and display equipment |
| CN102331598A (en) * | 2011-09-19 | 2012-01-25 | 苏州向隆塑胶有限公司 | Light guide plate, manufacturing method thereof and light source device |
| CN103123051A (en) * | 2011-11-21 | 2013-05-29 | 鸿富锦精密工业（深圳）有限公司 | Light source module assembly and light-emitting device |
| CN103728681A (en) * | 2012-10-15 | 2014-04-16 | 三星显示有限公司 | Prism sheet, back light unit with same and manufacturing method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5999685A (en) * | 1997-02-07 | 1999-12-07 | Sanyo Electric Co., Ltd. | Light guide plate and surface light source using the light guide plate |
| US6123431A (en) * | 1997-03-19 | 2000-09-26 | Sanyo Electric Co., Ltd | Backlight apparatus and light guide plate |
| GB2334806A (en) * | 1998-02-26 | 1999-09-01 | Taiwan Liton Electronic Co Ltd | Enhanced back light structure |
-
2003
- 2003-12-11 CN CNB2003101125932A patent/CN100395610C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460959C (en) * | 2006-03-30 | 2009-02-11 | 友达光电股份有限公司 | Backlight module and LCD using same |
| CN101334550B (en) * | 2007-06-29 | 2010-08-25 | 群康科技(深圳)有限公司 | Liquid crystal display device and driving method thereof |
| CN102095141A (en) * | 2011-02-22 | 2011-06-15 | 青岛海信电器股份有限公司 | Backlight module and display equipment |
| CN102095141B (en) * | 2011-02-22 | 2014-03-26 | 青岛海信电器股份有限公司 | Backlight module and display equipment |
| CN102331598A (en) * | 2011-09-19 | 2012-01-25 | 苏州向隆塑胶有限公司 | Light guide plate, manufacturing method thereof and light source device |
| CN103123051A (en) * | 2011-11-21 | 2013-05-29 | 鸿富锦精密工业（深圳）有限公司 | Light source module assembly and light-emitting device |
| CN103123051B (en) * | 2011-11-21 | 2016-05-11 | 鸿富锦精密工业（深圳）有限公司 | Light source module and light-emitting device |
| CN103728681A (en) * | 2012-10-15 | 2014-04-16 | 三星显示有限公司 | Prism sheet, back light unit with same and manufacturing method thereof |
| CN103728681B (en) * | 2012-10-15 | 2018-06-08 | 三星显示有限公司 | Prismatic lens, the back light unit including the prismatic lens and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100395610C (en) | 2008-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20070024994A1 (en) | Structured optical film with interspersed pyramidal structures | |
| KR20070085349A (en) | Optical film having a structured surface with rectangular based prisms | |
| KR20090085059A (en) | Back-lit displays with high illumination uniformity | |
| KR20090086552A (en) | Back-lit displays with high illumination uniformity | |
| CN1504803A (en) | Backlight source and liquid crystal display device | |
| US20110157912A1 (en) | Light guide plate and related backlight module | |
| CN1627152A (en) | Light guiding plate | |
| CN1266411C (en) | Light board device | |
| CN2586972Y (en) | Light conductor of sheet type | |
| CN1746741A (en) | High-brilliance light-negative module | |
| CN1504805A (en) | Backlight module | |
| CN2586979Y (en) | Liquid crystal display module | |
| CN1508601A (en) | Back light system | |
| CN1619375A (en) | Back light module | |
| CN1504776A (en) | Light conducting element | |
| CN1510439A (en) | Light conducting board and background module set | |
| CN2580452Y (en) | Large size light conduction plate | |
| CN1580900A (en) | Back light assembly | |
| CN2607593Y (en) | Poor light source | |
| CN1614470A (en) | Light conductive board | |
| CN1542465A (en) | Backlight module and light conducting plate | |
| CN100351655C (en) | Backlight module and light conducting plate | |
| CN2586980Y (en) | Back light module | |
| CN2613784Y (en) | Light reflector module set with double-side lighting | |
| CN2586983Y (en) | Back light system |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080618 Termination date: 20151211 |
|
| EXPY | Termination of patent right or utility model |