CN1619373A - Light conducting board and back light module - Google Patents
Light conducting board and back light module Download PDFInfo
- Publication number
- CN1619373A CN1619373A CN 200310112276 CN200310112276A CN1619373A CN 1619373 A CN1619373 A CN 1619373A CN 200310112276 CN200310112276 CN 200310112276 CN 200310112276 A CN200310112276 A CN 200310112276A CN 1619373 A CN1619373 A CN 1619373A
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light guide
- light
- groove
- exiting surface
- 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.)
- Pending
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The present invention relates to a light-conducting plate, including a light-incoming plane, a light-outcoming plane adjacent to said light-incoming plane and a background plane opposite to said light-outcoming plane. On said light-outcoming plane the concentric channels whose spacing distances are changed are set.
Description
[technical field]
The present invention relates to a kind of light guide plate and adopt the module backlight of this light guide plate.
[background technology]
Liquid crystal indicator is mainly used in various information, communication, the consumer products, as PC, LCD TV, mobile phone, picture telephone, PDA etc.Because panel of LCD itself can not be luminous, need module backlight to provide uniform in-plane light, thereby obtain good visual effect for it.
Seeing also Fig. 1, is a kind of prior art module backlight that the United States Patent (USP) of on August 20th, 1996 bulletin is disclosed for the 5th, 548, No. 670.This module 1 backlight comprises that the parallel light source that is oppositely arranged 101 and 102, is arranged on the prismatic lens 14 that reflecting plate 13 and that light guide plate 12, between light source 101 and 102 is arranged on light guide plate 12 belows is positioned at these light guide plate 12 tops.In this module 1 backlight,,, need to adopt prismatic lens 14, so increased the cost of this module 1 backlight in order to improve the emitting brightness of this module 1 backlight because light guide plate 12 does not have light-focusing function.In addition, because adopt prismatic lens 14, must could outgoing from the light of light source 101 and 102 outgoing by prismatic lens, make the loss of luminous energy increase, reduced the light utilization efficiency of module backlight.
[summary of the invention]
In order to overcome prior art light guide plate cost height, shortcoming that light utilization efficiency is low, the invention provides a kind of light guide plate low, that light utilization efficiency is high of hanging down into.
In order to overcome prior art module cost backlight height, shortcoming that light utilization efficiency is low, the invention provides a kind of module backlight low, that light utilization efficiency is high that hangs down into.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of light guide plate, comprise the exiting surface and one and this exiting surface opposed bottom surface of an incidence surface, adjacent this incidence surface, and this exiting surface is provided with the concentric groove that spacing changes.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of module backlight, comprise a light source and a light guide plate, this light guide plate comprises the exiting surface and one and this exiting surface opposed bottom surface of an incidence surface, adjacent this incidence surface, this light source this incidence surface relatively is provided with, and this exiting surface is provided with the concentric groove that spacing changes.
Compared with prior art, the invention has the beneficial effects as follows: the exiting surface of light guide plate is provided with groove, can omit the viscose process of prismatic lens and prismatic lens and light guide plate, the luminous energy loss that reduces assembly, simplifies processing procedure and avoid light to cause through glue-line.In addition,, can strengthen the spotlight effect of all directions, save the cost of prismatic lens, improve emitting brightness, make this light guide plate and module backlight have the advantage that cost is low, light utilization efficiency is high because this groove is a concentric structure.
[description of drawings]
Fig. 1 is the stereographic map of a kind of prior art module backlight.
Fig. 2 is the side view of the present invention's module first embodiment backlight.
Fig. 3 is the light guide plate vertical view of the present invention's module first embodiment backlight.
Fig. 4 is the light guide plate vertical view of the present invention's module second embodiment backlight.
[embodiment]
Seeing also Fig. 2 and Fig. 3, is respectively the side view and the light guide plate vertical view of the present invention's module first embodiment backlight.This module 2 backlight comprises a light guide plate 20 and two light sources 21.This light guide plate 20 is plate shaped, and its material can be acryl resin, polycarbonate, polyvinyl resin or glass etc.This light guide plate 20 comprises two relative incidence surfaces 22, an exiting surface 23 adjacent with this two incidence surface 22 and one and these exiting surface 23 opposed bottom surface 24.Wherein, this exiting surface 23 is provided with the concentric grooves 26 that spacing changes, this concentric grooves 26 is to be the concentric structure that the center of circle forms to external diffusion gradually with light guide plate 20 centers, and wherein the cross section of each groove is a V-arrangement, also can be trapezoidal, circular-arc, ellipticity etc.This concentric grooves 26 can with method manufacturings such as light guide plate 20 one ejection formations, also available chemical method for etching, laser direct-writing method and precision optical machinery delineation method.This bottom surface 24 is provided with a plurality of sites 25, and these a plurality of sites 25 sizes are to increase progressively arrangement along the direction away from incidence surface 22, and are near more from light source, and size is more little and distribute thin more; Far away more from light source, size is big more and distribute close more.This two light source 21 is two incidence surfaces, 22 settings of this light guide plate 20 relatively respectively.
Light sends from this two light source 21, enters this light guide plate 20 through incidence surface 22, through more than 25 scatter reflections in a plurality of sites on the bottom surface 24, finally is mapped to exiting surface 23.Because this exiting surface 23 is provided with the concentric grooves 26 that spacing changes, it can assemble light in all directions, plays the effect of prismatic lens, improves emitting brightness.The density degree of this concentric circles flute 26 can change according to real needs, as being designed to linear distribution, polynomial expression distribution, trigonometric function distribution etc.
Seeing also Fig. 4, is the light guide plate vertical view of the present invention's module second embodiment backlight.The present embodiment and first embodiment are roughly the same, difference is that this concentric groove is a concentration ellipse groove 36, this concentration ellipse groove 36 is to be formed to external diffusion gradually by the light guide plate center, and the density degree of this concentration ellipse flute 36 can change according to real needs, as being designed to linear distribution, polynomial expression distribution, trigonometric function distribution etc.
Light guide plate of the present invention and module backlight are not limited to said structure, and for example: in order to cooperate different light source positions, this light guide plate shape also can be wedge shape or triangle; A plurality of sites that the bottom surface distributed can be circular, also can be square, rhombus, ellipse or other shape, and these a plurality of sites can be protruded or be recessed, and it can be by printing or the mode of ejection formation is produced on this bottom surface; This light source can be cold cathode fluorescent lamp or light emitting diode.
Claims (8)
1. light guide plate comprises the exiting surface and one and this exiting surface opposed bottom surface of an incidence surface, adjacent this incidence surface, and it is characterized in that: this exiting surface is provided with the concentric groove that spacing changes.
2. light guide plate according to claim 1 is characterized in that: this groove is concentric circles or concentration ellipse.
3. light guide plate according to claim 1 is characterized in that: the trench cross section of this groove is V-arrangement, trapezoidal, circular arc or ellipse.
4. light guide plate according to claim 1 is characterized in that: this groove and light guide plate one ejection formation.
5. light guide plate according to claim 1 is characterized in that: this light guide plate is plate shaped, wedge shape or triangle.
6. light guide plate according to claim 1 is characterized in that: this bottom surface further is provided with a plurality of sites, and these a plurality of sites can be shapes such as circular, square, rhombus or ellipse.
7. module backlight, comprise a light source and a light guide plate, this light guide plate comprises an incidence surface, an exiting surface adjacent with this incidence surface and one and this exiting surface opposed bottom surface, and this light source this incidence surface relatively is provided with, and it is characterized in that: this exiting surface is provided with the concentric groove that spacing changes.
8. module backlight according to claim 7 is characterized in that: this light source is cold cathode fluorescent lamp or light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310112276 CN1619373A (en) | 2003-11-17 | 2003-11-17 | Light conducting board and back light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310112276 CN1619373A (en) | 2003-11-17 | 2003-11-17 | Light conducting board and back light module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1619373A true CN1619373A (en) | 2005-05-25 |
Family
ID=34759686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310112276 Pending CN1619373A (en) | 2003-11-17 | 2003-11-17 | Light conducting board and back light module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1619373A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104508353A (en) * | 2013-07-30 | 2015-04-08 | 镭亚股份有限公司 | Multibeam diffraction grating-based backlighting |
| CN104808280A (en) * | 2015-04-28 | 2015-07-29 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module with same |
| US9557466B2 (en) | 2014-07-30 | 2017-01-31 | Leia, Inc | Multibeam diffraction grating-based color backlighting |
| CN107632332A (en) * | 2017-10-31 | 2018-01-26 | 维沃移动通信有限公司 | A kind of bright enhancement film, backlight module, LCM and electronic equipment |
| US10373544B1 (en) | 2016-01-29 | 2019-08-06 | Leia, Inc. | Transformation from tiled to composite images |
| CN110737136A (en) * | 2019-10-31 | 2020-01-31 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN110824608A (en) * | 2019-12-25 | 2020-02-21 | 美智光电科技有限公司 | Light guide plate and lamp |
| US10578793B2 (en) | 2015-05-09 | 2020-03-03 | Leia Inc. | Color-scanning grating-based backlight and electronic display using same |
| US10670920B2 (en) | 2015-03-16 | 2020-06-02 | Leia Inc. | Unidirectional grating-based backlighting employing an angularly selective reflective layer |
| US10684404B2 (en) | 2015-01-10 | 2020-06-16 | Leia Inc. | Diffraction grating-based backlighting having controlled diffractive coupling efficiency |
| US10703375B2 (en) | 2015-05-30 | 2020-07-07 | Leia Inc. | Vehicle monitoring system |
| US10768357B2 (en) | 2015-01-10 | 2020-09-08 | Leia Inc. | Polarization-mixing light guide and multibeam grating-based backlighting using same |
| WO2020177620A1 (en) * | 2019-03-07 | 2020-09-10 | 京东方科技集团股份有限公司 | Light guide plate, backlight module, and display apparatus |
| US10788619B2 (en) | 2015-04-23 | 2020-09-29 | Leia Inc. | Dual light guide grating-based backlight and electronic display using same |
| US10852560B2 (en) | 2015-01-10 | 2020-12-01 | Leia Inc. | Two-dimensional/three-dimensional (2D/3D) switchable display backlight and electronic display |
| US10948647B2 (en) | 2015-01-19 | 2021-03-16 | Leia Inc. | Unidirectional grating-based backlighting employing a reflective island |
| US11194086B2 (en) | 2015-01-28 | 2021-12-07 | Leia Inc. | Three-dimensional (3D) electronic display |
-
2003
- 2003-11-17 CN CN 200310112276 patent/CN1619373A/en active Pending
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10830939B2 (en) | 2013-07-30 | 2020-11-10 | Leia Inc. | Multibeam diffraction grating-based backlighting |
| CN109100887B (en) * | 2013-07-30 | 2021-10-08 | 镭亚股份有限公司 | Backlight, electronic display, multi-view display and method of operation |
| CN104508353B (en) * | 2013-07-30 | 2018-08-31 | 镭亚股份有限公司 | Back lighting based on multi beam diffraction grating |
| CN109100887A (en) * | 2013-07-30 | 2018-12-28 | 镭亚股份有限公司 | Backlight body, electronic console, multi-view display and operating method |
| CN104508353A (en) * | 2013-07-30 | 2015-04-08 | 镭亚股份有限公司 | Multibeam diffraction grating-based backlighting |
| US9557466B2 (en) | 2014-07-30 | 2017-01-31 | Leia, Inc | Multibeam diffraction grating-based color backlighting |
| US10345505B2 (en) | 2014-07-30 | 2019-07-09 | Leia, Inc. | Multibeam diffraction grating-based color backlighting |
| US10852560B2 (en) | 2015-01-10 | 2020-12-01 | Leia Inc. | Two-dimensional/three-dimensional (2D/3D) switchable display backlight and electronic display |
| US10768357B2 (en) | 2015-01-10 | 2020-09-08 | Leia Inc. | Polarization-mixing light guide and multibeam grating-based backlighting using same |
| US10684404B2 (en) | 2015-01-10 | 2020-06-16 | Leia Inc. | Diffraction grating-based backlighting having controlled diffractive coupling efficiency |
| US10948647B2 (en) | 2015-01-19 | 2021-03-16 | Leia Inc. | Unidirectional grating-based backlighting employing a reflective island |
| US11194086B2 (en) | 2015-01-28 | 2021-12-07 | Leia Inc. | Three-dimensional (3D) electronic display |
| US10670920B2 (en) | 2015-03-16 | 2020-06-02 | Leia Inc. | Unidirectional grating-based backlighting employing an angularly selective reflective layer |
| US10788619B2 (en) | 2015-04-23 | 2020-09-29 | Leia Inc. | Dual light guide grating-based backlight and electronic display using same |
| CN104808280B (en) * | 2015-04-28 | 2019-02-12 | 深圳市华星光电技术有限公司 | Light guide plate and the backlight module for using the light guide plate |
| WO2016173085A1 (en) * | 2015-04-28 | 2016-11-03 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module using same |
| CN104808280A (en) * | 2015-04-28 | 2015-07-29 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module with same |
| US10578793B2 (en) | 2015-05-09 | 2020-03-03 | Leia Inc. | Color-scanning grating-based backlight and electronic display using same |
| US10703375B2 (en) | 2015-05-30 | 2020-07-07 | Leia Inc. | Vehicle monitoring system |
| US11203346B2 (en) | 2015-05-30 | 2021-12-21 | Leia Inc. | Vehicle monitoring system |
| US10373544B1 (en) | 2016-01-29 | 2019-08-06 | Leia, Inc. | Transformation from tiled to composite images |
| CN107632332A (en) * | 2017-10-31 | 2018-01-26 | 维沃移动通信有限公司 | A kind of bright enhancement film, backlight module, LCM and electronic equipment |
| WO2020177620A1 (en) * | 2019-03-07 | 2020-09-10 | 京东方科技集团股份有限公司 | Light guide plate, backlight module, and display apparatus |
| CN110737136A (en) * | 2019-10-31 | 2020-01-31 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN110737136B (en) * | 2019-10-31 | 2022-07-12 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN110824608A (en) * | 2019-12-25 | 2020-02-21 | 美智光电科技有限公司 | Light guide plate and lamp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100370329C (en) | Light conducting plate and back light module | |
| KR101329413B1 (en) | Optical lens, optical module having the optical lens and backlight unit having the optical module | |
| CN100445827C (en) | Light-conducting board and backlight mould set | |
| CN101097349B (en) | Backlight assembly and liquid crystal display device having the same | |
| CN1619373A (en) | Light conducting board and back light module | |
| CN100462797C (en) | Light guiding plate | |
| CN101661188A (en) | Liquid crystal display | |
| CN2588388Y (en) | Light conducting board device | |
| CN1570720A (en) | Backlight source device and liquid crystal display | |
| CN100575992C (en) | Planar light source device and use therein light conductor | |
| CN1580901A (en) | Back light assembly and its light guide board | |
| CN1434335A (en) | Improvement method for arca source of LED | |
| CN1797106A (en) | Plate for guiding light and backlight module | |
| CN1266411C (en) | Light board device | |
| CN202521382U (en) | Light guide plate, backlight module and display device | |
| CN2604706Y (en) | Back light module block | |
| CN1619376A (en) | Light conducting board and back light module | |
| CN201007743Y (en) | Structure improvement of reflection plate | |
| CN2769945Y (en) | Backlight module | |
| CN1508601A (en) | Back light system | |
| CN1220102C (en) | A double-faced light guiding plate and LCD having the same | |
| CN1612017A (en) | Back light module assembly and its light guide board | |
| CN2837891Y (en) | Optical guide structure of optical guide plate | |
| CN1580899A (en) | Back light module and its light guide board | |
| CN2763838Y (en) | Light guiding board |
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 |