CN201787495U - Light guide plate, backlight source and lighting device - Google Patents

Light guide plate, backlight source and lighting device Download PDF

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Publication number
CN201787495U
CN201787495U CN2010202929378U CN201020292937U CN201787495U CN 201787495 U CN201787495 U CN 201787495U CN 2010202929378 U CN2010202929378 U CN 2010202929378U CN 201020292937 U CN201020292937 U CN 201020292937U CN 201787495 U CN201787495 U CN 201787495U
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CN
China
Prior art keywords
lgp
glass
light
pit
projection
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
Application number
CN2010202929378U
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Chinese (zh)
Inventor
宋义
邹华德
定毛山
张俊锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Diguang Electronics Co., Ltd.
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Shenzhen Diguang Electronics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority to CN2010202929378U priority Critical patent/CN201787495U/en
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Publication of CN201787495U publication Critical patent/CN201787495U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model is applicable to the field of illumination, and provides a light guide plate, a backlight source and a lighting device; the light guide plate is made of ultra-white glass, and is provided with at least one incidence surface used for receiving a light beam, a bottom surface connected with the incidence surface, and a light-emitting surface opposite to the bottom surface; the light-emitting surface is used for leading the light in the light guide plate outside; the ultra-white glass takes oxide glass of silicate glass, phosphate glass or borate glass, or nonoxide glass of chalcogenide glass or halide glass as matrix; the light-emitting surface of the light guide plate is a mirror surface or a rough surface; and the bottom surface of the light guide plate is etched, carved or printed with pits or bulges. The ultra-white glass is adopted as the light guide plate, the light-emitting surface of the light guide plate is set to be the mirror surface or the rough surface, and the bottom surface of the light guide plate is provided with the plurality of pits or bulges, so that the light emitted from the light-emitting surface of the light guide plate is even in distribution, and the uniformity of the light emitted by the light guide plate is greatly improved.

Description

A kind of LGP, backlight and lighting device
Technical field
The utility model belongs to lighting field, relates in particular to a kind of LGP, backlight and lighting device.
Background technology
Along with the development of flat panel display, the range of application in planar backlight source is increasing, and with backlight etc., these all need uniform planar backlight as LCD backlight, illuminating planar backlight source, indicator lamp.As the optical property of the LGP of side-light type back light important component part, determined the light effect that in entire backlight source.
Though the LGP of being made by acrylic, Merlon (PC), polymethyl methacrylate (PMMA) can meet the demands to a certain extent, but, still there is very big defective: (1) poor rigidity, area easily deforms when big, particularly for the large scale backlight, owing to the light inequality that the LGP distortion causes is particularly evident; (2) easily expanded by heating distortion, the thermal coefficient of expansion of LGP is big, hardness step-down when its temperature surpasses 40 degrees centigrade, scratch easily; (3) non-refractory and inflammable, it only is about 17.3 that limited oxygen index is arranged; Easily absorb dust when (4) having static, influence the exiting surface bright dipping.
Recently a kind of LGP of making by ultra-clear glasses occurs, solved the problems referred to above substantially.But poor through the uniformity of light of this LGP outgoing, have a strong impact on its application.
The utility model content
The purpose of the utility model embodiment is to provide a kind of LGP, is intended to solve the existing uneven problem of LGP bright dipping.
The utility model embodiment realizes like this, a kind of LGP, make by ultra-clear glasses, described LGP has at least one incidence surface in order to receiving beam, a bottom surface and an exiting surface relative with described bottom surface that links to each other with described incidence surface, described exiting surface is in order to going out the photoconduction in the described LGP, and described ultra-clear glasses is a matrix with the oxide glass of silicate glass, phosphate glass or borate glass or with the nonoxide glass of chalcogenide glass, halide glass; The exiting surface of described LGP is minute surface or hair side, the bottom surface etching of described LGP, carves or be printed with pit or projection.
In the utility model embodiment, described pit or projection are extremely close by dredging along the direction away from described incidence surface, and are extremely arranged greatly by little.
As preferably, it is vertical that the tangent plane of the bottom surface of described LGP and described pit or raised surface and light source send the light that enters described LGP.
Another purpose of the utility model embodiment is to provide a kind of backlight, described backlight comprise light source and with the LGP of described light source optical coupled, described LGP has at least one incidence surface, a bottom surface and exiting surface relative with described bottom surface that links to each other with described incidence surface in order to the light that receives described light source and send, described exiting surface is in order to going out the photoconduction in the described LGP, and described ultra-clear glasses is a matrix with the oxide glass of silicate glass, phosphate glass or borate glass or with the nonoxide glass of chalcogenide glass, halide glass; The exiting surface of described LGP is minute surface or hair side, the bottom surface etching of described LGP, carves or be printed with pit or projection.
Another purpose of the utility model embodiment is to provide a kind of lighting device, and described lighting device has above-mentioned LGP.
The utility model embodiment adopts with the oxide glass of silicate glass, phosphate glass or borate glass or is that the ultra-clear glasses of matrix is made LGP with the nonoxide glass of chalcogenide glass, halide glass; And the exiting surface of LGP is set to minute surface or hair side, and the bottom surface is provided with a plurality of pits or projection, makes from the light of the exiting surface outgoing of LGP to be evenly distributed, and improved LGP greatly and gone out uniformity of light.This LGP can be used for various lighting devices, outstanding suitable LGP as backlight.
Description of drawings
Fig. 1 is the structural representation of the backlight that provides of the utility model embodiment;
Fig. 2 is the distribution schematic diagram of point-like pit or projection on the bottom surface of the LGP that provides of the utility model embodiment;
Fig. 3 is the distribution schematic diagram of strip pit or projection on the bottom surface of the LGP that provides of the utility model embodiment;
Fig. 4 is point-like and the pit of hexagon shape or the distribution schematic diagram of projection on the bottom surface of the LGP that provides of the utility model embodiment;
Fig. 5 is another structural representation of the backlight that provides of the utility model embodiment.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The utility model embodiment adopts with the oxide glass of silicate glass, phosphate glass or borate glass or is that the ultra-clear glasses of matrix is made LGP with the nonoxide glass of chalcogenide glass, halide glass; And the exiting surface of LGP is set to minute surface or hair side, and the bottom surface is provided with a plurality of pits or projection, makes from the light of the exiting surface outgoing of LGP to be evenly distributed, and improved LGP greatly and gone out uniformity of light.
The LGP that the utility model embodiment provides is made by ultra-clear glasses, described LGP has at least one incidence surface in order to receiving beam, a bottom surface and an exiting surface relative with described bottom surface that links to each other with described incidence surface, described exiting surface is in order to going out the photoconduction in the described LGP, and described ultra-clear glasses is a matrix with the oxide glass of silicate glass, phosphate glass or borate glass or with the nonoxide glass of chalcogenide glass, halide glass; The exiting surface of described LGP is minute surface or hair side, the bottom surface etching of described LGP, carves or be printed with pit or projection.
The backlight that the utility model embodiment provides comprise light source and with the LGP of described light source optical coupled, described LGP has at least one incidence surface, a bottom surface and exiting surface relative with described bottom surface that links to each other with described incidence surface in order to the light that receives described light source and send, described exiting surface is in order to going out the photoconduction in the described LGP, and described ultra-clear glasses is a matrix with the oxide glass of silicate glass, phosphate glass or borate glass or with the nonoxide glass of chalcogenide glass, halide glass; The exiting surface of described LGP is minute surface or hair side, the bottom surface etching of described LGP, carves or be printed with pit or projection.
The lighting device that the utility model embodiment provides has above-mentioned LGP.
Below be that example is described in detail realization of the present utility model with the backlight.
As shown in Figure 1, the backlight that provides of the utility model embodiment comprise a LGP 1 and with the light source 2 of LGP 1 optical coupled.LGP 1 has at least one incidence surface 11 in order to the light that receives light source 2 and send, a bottom surface 12 that links to each other with incidence surface 11 and an exiting surface 13 relative with bottom surface 12, and exiting surface 13 is set to minute surface or hair side, in order to LGP 1 interior photoconduction is gone out.The bottom surface 12 of LGP 1 is distributed with a plurality of pits or projection 14, and light source 2 is located at the incidence surface 11 of LGP 1.
Among the utility model embodiment, LGP 1 is made by ultra-clear glasses.Ultra-clear glasses is a matrix with the oxide glass of silicate glass, phosphate glass or borate glass or with the nonoxide glass of chalcogenide glass, halide glass, the ultra-clear glasses of this matrix have high transmission rate, high temperature resistant, heat endurance is good, characteristics such as not yielding, and is even by LGP 1 bright dipping that this ultra-clear glasses is made.
Above-mentioned a plurality of pit or projection 14 are through etching, the bottom surface 12 of carving or being printed in LGP 1, and this pit or projection 14 are point-like or strip.Pit or projection 14 size and density determines according to the light transmittance of thickness, the size of LGP 1 and the LCD LCD that joined, makes from the light of exiting surface 13 outgoing of LGP 1 to be evenly distributed.Better go out light effect in order to reach, the exiting surface 13 of LGP 1 is minute surface or hair side, establishes diffusion layer 17 on the exiting surface 13.In addition, pit or projection 14 can be polygon or bent limit shape.
Among the utility model embodiment, pit or projection 14 along away from the direction of the incidence surface 11 of LGP 1 by dredge to close and by little to arranging greatly.If the luminosity of the part of exiting surface 13 is higher, then can reduce the size of pit or projection 14 or reduce its density, be evenly distributed thereby make from the light of exiting surface 13 outgoing; If the luminosity of the part of exiting surface 13 is on the low side, then can increase the size of pit or projection 14 or strengthen its density, be evenly distributed thereby make from the light of exiting surface 13 outgoing.
Should be noted that not to be that single pit or projection 14 area are big more, just strong more from the light of exiting surface 13 outgoing, the shape of pit or projection 14 is relevant with the direction of the light that light source 2 sends.The light that enters LGP 1 when light source 2 is during perpendicular to the tangent plane in LGP 1 bottom surface and pit or projection 14 surfaces, at this moment, the light energy maximum on the vertical line, brightness is the highest, and other tangent plane parallel with light is not have to reflect and catoptrical.Be the tangent face of LGP 1 bottom surface and pit or projection 14 surfaces when entering LGP 1 ray intersection, just have light to reflect and reflect that light intensity is the strongest when intersecting vertically, and becomes parallel place all unglazed with light with light source 2.Thereby, by adjusting the shape and the size of pit or projection 14, make light that light source 2 enters LGP 1 as far as possible perpendicular to the surperficial tangent planes of LGP 1 bottom surface and pit or projection 14, help to improve the light extraction efficiency of LGP 1.
The bottom surface 12 of above-mentioned LGP 1 is distributed with pit or projection 14, the pit of the two or more shapes that also can distribute or the projection 14 of same shape.Pit or projection 14 are point-like pit or projection, as shown in Figure 2; Pit or projection 14 are strip pit or projection, as shown in Figure 3; Pit or projection 14 are for being made of point-like pit or projection and hexagon pit or projection, as shown in Figure 4.
If pit or projection 14 are covered with the bottom surface 12 of LGP 1, the length at the long edge of pit or projection 14 equates with the length or the width of LGP 1 at this moment.If pit or 14 parts that are distributed in the bottom surface 12 of LGP 1 of projection, the length at the long edge of pit or projection 14 equates less than the length or the width of LGP 1 at this moment.
As shown in Figure 5, two light sources 2 are divided into two incidence surfaces 11 of LGP 1, and the light that light source 2 sends enters LGP 1 from the incidence surface 11 of LGP 1.According to the requirement of back light source brightness, LGP 1 also can have three or four incidence surfaces 11, and correspondingly, light source 2 has three or four, to improve the emitting brightness of LGP 1.The bottom surface 12 of LGP 1 is provided with reflecting layer 15, can establish the reflection layer (not shown) in the side that LGP 1 is not established light source 2 in addition, to improve light utilization.Light source 2 is led light source or CCFL light source, and its outside also is provided with a pure white reflector layer 16, is coupled into LGP 1 so that the light that light source 2 is sent reflects better.
The utility model embodiment adopts with the oxide glass of silicate glass, phosphate glass or borate glass or is that the ultra-clear glasses of matrix is made LGP with the nonoxide glass of chalcogenide glass, halide glass; The exiting surface of described LGP is minute surface or hair side, its bottom surface etching, carves or be printed with pit or projection, makes from the light of the exiting surface outgoing of LGP to be evenly distributed, and has improved LGP greatly and has gone out uniformity of light.A plurality of pits or projection edge are extremely close by dredging away from the direction of the incidence surface of LGP, and are extremely arranged greatly by little, help further to improve LGP and go out uniformity of light.In addition, make light source enter bottom surface and pit or the raised surface tangent plane of the light of LGP, help to improve the light extraction efficiency of LGP perpendicular to LGP.This LGP can be used for various lighting devices, outstanding suitable LGP as backlight.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims (10)

1. LGP, make by ultra-clear glasses, described LGP has at least one incidence surface in order to receiving beam, a bottom surface and an exiting surface relative with described bottom surface that links to each other with described incidence surface, described exiting surface is in order to go out the photoconduction in the described LGP, it is characterized in that described ultra-clear glasses is a matrix with the oxide glass of silicate glass, phosphate glass or borate glass or with the nonoxide glass of chalcogenide glass, halide glass; The exiting surface of described LGP is minute surface or hair side, the bottom surface etching of described LGP, carves or be printed with pit or projection.
2. LGP as claimed in claim 1 is characterized in that, described pit or projection are polygon or bent limit shape, are point-like or strip.
3. LGP as claimed in claim 1 is characterized in that, described pit or projection are extremely close by dredging along the direction away from described incidence surface, and is extremely arranged greatly by little.
4. LGP as claimed in claim 1 is characterized in that, the length at the long edge of described pit or projection is no more than the length or the width of described LGP.
5. LGP as claimed in claim 1 is characterized in that, plane and light source that the bottom surface of described LGP and described pit or raised surface are tangent send the ray intersection that enters described LGP.
6. LGP as claimed in claim 5 is characterized in that, it is vertical that the tangent plane of the bottom surface of described LGP and described pit or raised surface and light source send the light that enters described LGP.
7. LGP as claimed in claim 1 is characterized in that, described pit or projection have two or more shapes.
8. backlight, comprise light source and with the LGP of described light source optical coupled, described LGP has at least one incidence surface, a bottom surface and exiting surface relative with described bottom surface that links to each other with described incidence surface in order to the light that receives described light source and send, described exiting surface is in order to go out the photoconduction in the described LGP, it is characterized in that described ultra-clear glasses is a matrix with the oxide glass of silicate glass, phosphate glass or borate glass or with the nonoxide glass of chalcogenide glass, halide glass; The exiting surface of described LGP is minute surface or hair side, the bottom surface etching of described LGP, carves or be printed with pit or projection.
9. backlight as claimed in claim 8 is characterized in that, described incidence surface is a plurality of, each incidence surface is equipped with described light source, the outside of described light source also is provided with a pure white reflector layer, and the bottom surface of described LGP is provided with the reflecting layer, and the exiting surface of described LGP is provided with diffusion layer.
10. a lighting device is characterized in that, described lighting device has as each described LGP of claim 1~7.
CN2010202929378U 2010-08-16 2010-08-16 Light guide plate, backlight source and lighting device Expired - Fee Related CN201787495U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202929378U CN201787495U (en) 2010-08-16 2010-08-16 Light guide plate, backlight source and lighting device

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Application Number Priority Date Filing Date Title
CN2010202929378U CN201787495U (en) 2010-08-16 2010-08-16 Light guide plate, backlight source and lighting device

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102374493A (en) * 2010-08-16 2012-03-14 深圳帝光电子有限公司 Light guide plate, backlight source and illuminating device
CN107422532A (en) * 2017-08-16 2017-12-01 京东方科技集团股份有限公司 A kind of transparent display panel, its preparation method and display system
US9902644B2 (en) 2014-06-19 2018-02-27 Corning Incorporated Aluminosilicate glasses
CN107848873A (en) * 2015-05-15 2018-03-27 康宁股份有限公司 Glassware and its manufacture method comprising light extraction features
CN108680988A (en) * 2018-07-04 2018-10-19 苏州亿光源光电科技有限公司 A kind of edge-type light guide plate and its preparation and application

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102374493A (en) * 2010-08-16 2012-03-14 深圳帝光电子有限公司 Light guide plate, backlight source and illuminating device
US11001521B2 (en) 2014-06-19 2021-05-11 Corning Incorporated Aluminosilicate glasses
US9902644B2 (en) 2014-06-19 2018-02-27 Corning Incorporated Aluminosilicate glasses
US10173920B2 (en) 2014-06-19 2019-01-08 Corning Incorporated Aluminosilicate glasses
CN107848873A (en) * 2015-05-15 2018-03-27 康宁股份有限公司 Glassware and its manufacture method comprising light extraction features
CN107422532A (en) * 2017-08-16 2017-12-01 京东方科技集团股份有限公司 A kind of transparent display panel, its preparation method and display system
CN108680988A (en) * 2018-07-04 2018-10-19 苏州亿光源光电科技有限公司 A kind of edge-type light guide plate and its preparation and application
CN108680988B (en) * 2018-07-04 2021-04-02 苏州亿光源光电科技有限公司 Lateral light guide plate and preparation and application thereof

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GR01 Patent grant
C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20160721

Address after: 523000 Changshan village, Qingxi Town, Guangdong, Dongguan

Patentee after: Dongguan Diguang Electronics Co., Ltd.

Address before: Futian District Shenzhen City, Guangdong Province, CaiTian road 518026 No. 3069 Galaxy A 23 storey Century Towers

Patentee before: Diguang Electronic Co., Ltd., Shenzhen

C41 Transfer of patent application or patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110406

Termination date: 20170816

CF01 Termination of patent right due to non-payment of annual fee