CN102374493A - Light guide plate, backlight source and illuminating device - Google Patents
Light guide plate, backlight source and illuminating device Download PDFInfo
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- CN102374493A CN102374493A CN2010102541808A CN201010254180A CN102374493A CN 102374493 A CN102374493 A CN 102374493A CN 2010102541808 A CN2010102541808 A CN 2010102541808A CN 201010254180 A CN201010254180 A CN 201010254180A CN 102374493 A CN102374493 A CN 102374493A
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Abstract
The invention is suitable for the field of illumination, and provides a light guide plate, a backlight source and an illuminating device. The light guide plate is made of ultra-white glass and is provided with at least one light incident surface for receiving light beams, a bottom surface connected with the light incident surface and a light-emitting surface opposite to the bottom surface, wherein the light-emitting surface is used for guiding light in the light guide plate out; in the ultra-white glass, oxide glass of silicate glass, phosphate glass or borate glass or non-oxide glass of chalcogenide glass and halide glass is used as a matrix; the light-emitting surface of the light guide plate is a mirror surface or a rough surface; and pits or bulges are etched, carved or printed on the bottom surface of the light guide plate. In the invention, the ultra-white glass is used as the light guide plate, the light-emitting surface of the light guide plate is used as the mirror surface or the rough surface, and a plurality of pits or bulges are formed on the bottom surface, so that the light emitted from the light-emitting surface of the light guide plate is distributed uniformly, and the light-emitting uniformity of the light guide plate is improved greatly.
Description
Technical field
The invention belongs to lighting field, relate 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 like 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 processed 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 is prone to deform when big, particularly for the large scale backlight, owing to the light inequality that the LGP distortion causes is particularly evident; (2) be prone to the 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 has limited oxygen index to be merely about 17.3; Be prone to when (4) having static absorb dust, influence the exiting surface bright dipping.
Recently a kind of LGP of processing by ultra-clear glasses occurs, solved the problems referred to above basically.But poor through the uniformity of light of this LGP outgoing, have a strong impact on its application.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of LGP, is intended to solve the existing uneven problem of LGP bright dipping.
The embodiment of the invention is to realize like this; A kind of LGP; Process by ultra-clear glasses; Said LGP has bottom surface that at least one incidence surface in order to receiving beam, links to each other with said incidence surface and an exiting surface relative with said bottom surface, and said exiting surface is in order to going out the photoconduction in the said LGP, and said 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 said LGP is minute surface or hair side, the bottom surface etching of said LGP, carves or be printed with pit or convexity.
Another purpose of the embodiment of the invention is to provide a kind of backlight; Said backlight comprise light source and with the LGP of said light source optical coupled; Said LGP has at least one bottom surface that links to each other with said incidence surface in order to the incidence surface, of the light that receives said light source and send and an exiting surface relative with said bottom surface; Said exiting surface is in order to going out the photoconduction in the said LGP, and said 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 said LGP is minute surface or hair side, the bottom surface etching of said LGP, carves or be printed with pit or convexity.
Another purpose of the embodiment of the invention is to provide a kind of lighting device, and said lighting device has above-mentioned LGP.
The embodiment of the invention 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 convexity, 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 embodiment of the invention;
Fig. 2 is point-like pit or a protruding distribution schematic diagram on the bottom surface of the LGP that provides of the embodiment of the invention;
Fig. 3 is strip pit or a protruding distribution schematic diagram on the bottom surface of the LGP that provides of the embodiment of the invention;
Fig. 4 is the pit or the protruding distribution schematic diagram of point-like and hexagon shape on the bottom surface of the LGP that provides of the embodiment of the invention;
Fig. 5 is another structural representation of the backlight that provides of the embodiment of the invention.
The specific embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention 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 convexity, 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 embodiment of the invention provides is processed by ultra-clear glasses; Said LGP has bottom surface that at least one incidence surface in order to receiving beam, links to each other with said incidence surface and an exiting surface relative with said bottom surface; Said exiting surface is in order to going out the photoconduction in the said LGP, and said 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 said LGP is minute surface or hair side, the bottom surface etching of said LGP, carves or be printed with pit or convexity.
The backlight that the embodiment of the invention provides comprise light source and with the LGP of said light source optical coupled; Said LGP has at least one bottom surface that links to each other with said incidence surface in order to the incidence surface, of the light that receives said light source and send and an exiting surface relative with said bottom surface; Said exiting surface is in order to going out the photoconduction in the said LGP, and said 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 said LGP is minute surface or hair side, the bottom surface etching of said LGP, carves or be printed with pit or convexity.
The lighting device that the embodiment of the invention provides has above-mentioned LGP.
Below be that example is described in detail realization of the present invention with the backlight.
As shown in Figure 1, the backlight that the embodiment of the invention provides comprise a LGP 1 and with the light source 2 of LGP 1 optical coupled.LGP 1 has at least one bottom surface 12 that links to each other with incidence surface 11 in order to the incidence surface 11, of the light that receives light source 2 and send 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 convexity 14, and light source 2 is located at the incidence surface 11 of LGP 1.
In the embodiment of the invention, LGP 1 is processed 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 processed.
Above-mentioned a plurality of pit or protruding 14 is through etching, the bottom surface 12 of carving or being printed in LGP 1, and this pit or protruding 14 is point-like or strip.Pit or protruding 14 size and density confirms 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 protruding 14 can be polygon or bent limit shape.
In the embodiment of the invention, pit or protruding 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 protruding 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 protruding 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 the area of single pit or protruding 14 is big more, just strong more from the light of exiting surface 13 outgoing, pit or protruding 14 shape are relevant with the direction of the light that light source 2 sends.The light that gets into LGPs 1 when light source 2 is during perpendicular to the tangent plane in LGP 1 bottom surface and pit or protruding 14 surfaces, and at this moment, the light energy on the vertical line is maximum, and brightness is the highest, and other tangent plane parallel with light is not have to reflect and catoptrical.Be the tangent face in LGP 1 bottom surface and pit or protruding 14 surfaces when getting into LGPs 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 through the shape and the size of adjustment pit or protruding 14, the light that makes light source 2 entering LGPs 1 as far as possible helps to improve the light extraction efficiency of LGP 1 perpendicular to LGP 1 bottom surface and the tangent plane of pit or protruding 14 surfaces.
The bottom surface 12 of above-mentioned LGP 1 is distributed with the pit or the convexity 14 of same shape, the pit of the two or more shapes that also can distribute or protruding 14.Pit or protruding 14 is point-like pit or convexity, and is as shown in Figure 2; Pit or protruding 14 is strip pit or convexity, and is as shown in Figure 3; Pit or protruding 14 is for being made up of point-like pit or protruding and hexagon pit or convexity, and is as shown in Figure 4.
If pit or protruding 14 is covered with the bottom surface 12 of LGP 1, the length at the long edge of pit or convexity 14 equates with the length or the width of LGP 1 at this moment.If pit or protruding 14 parts that are distributed in the bottom surface 12 of LGP 1, the length at the long edge of pit or convexity 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 gets into 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 embodiment of the invention 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 said LGP is minute surface or hair side, its bottom surface etching, carves or be printed with pit or convexity, 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 protruding 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 get into 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 is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. LGP; Process by ultra-clear glasses; Said LGP has bottom surface that at least one incidence surface in order to receiving beam, links to each other with said incidence surface and an exiting surface relative with said bottom surface; Said exiting surface is characterized in that in order to the photoconduction in the said LGP is gone out, and said 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 said LGP is minute surface or hair side, the bottom surface etching of said LGP, carves or be printed with pit or convexity.
2. LGP as claimed in claim 1 is characterized in that, said pit or convexity are polygon or bent limit shape, are point-like or strip.
3. LGP as claimed in claim 1 is characterized in that, said pit or protruding edge are extremely close by dredging away from the direction of said 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 said pit or convexity is no more than the length or the width of said LGP.
5. LGP as claimed in claim 1 is characterized in that, plane that the bottom surface of said LGP and said pit or raised surface are tangent and light source send the ray intersection that gets into said LGP.
6. LGP as claimed in claim 5 is characterized in that, it is vertical that the tangent plane of the bottom surface of said LGP and said pit or raised surface and light source send the light that gets into said LGP.
7. LGP as claimed in claim 1 is characterized in that, said pit or convexity have two or more shapes.
8. backlight; Comprise light source and with the LGP of said light source optical coupled; Said LGP has at least one bottom surface that links to each other with said incidence surface in order to the incidence surface, of the light that receives said light source and send and an exiting surface relative with said bottom surface; Said exiting surface is in order to go out the photoconduction in the said LGP; It is characterized in that said 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 said LGP is minute surface or hair side, the bottom surface etching of said LGP, carves or be printed with pit or convexity.
9. backlight as claimed in claim 8 is characterized in that, said incidence surface is a plurality of; Each incidence surface is equipped with said light source; The outside of said light source also is provided with a pure white reflector layer, and the bottom surface of said LGP is provided with the reflecting layer, and the exiting surface of said LGP is provided with diffusion layer.
10. a lighting device is characterized in that, said lighting device has like each described LGP of claim 1～7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102541808A CN102374493A (en) | 2010-08-16 | 2010-08-16 | Light guide plate, backlight source and illuminating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102541808A CN102374493A (en) | 2010-08-16 | 2010-08-16 | Light guide plate, backlight source and illuminating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102374493A true CN102374493A (en) | 2012-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102541808A Pending CN102374493A (en) | 2010-08-16 | 2010-08-16 | Light guide plate, backlight source and illuminating device |
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| CN (1) | CN102374493A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675990A (en) * | 2013-12-26 | 2014-03-26 | 深圳Tcl新技术有限公司 | Curved light guide plate and manufacturing method thereof |
| CN104880760A (en) * | 2015-06-01 | 2015-09-02 | 京东方科技集团股份有限公司 | Backlight module and peep-proof display device |
| US9902644B2 (en) | 2014-06-19 | 2018-02-27 | Corning Incorporated | Aluminosilicate glasses |
| CN111602001A (en) * | 2018-01-12 | 2020-08-28 | Lg伊诺特有限公司 | Lighting module and lighting device with same |
| CN114137652A (en) * | 2021-12-07 | 2022-03-04 | 华玻视讯(珠海)科技有限公司 | Novel glass light guide plate |
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| CN2336378Y (en) * | 1998-03-02 | 1999-09-01 | 宋义 | Uniform high-efficiency side-luminous backlight source |
| CN1397827A (en) * | 2001-07-13 | 2003-02-19 | 三星电子株式会社 | Optical plate, its mfg. and liquid crystal display having same optical plate |
| CN101452146A (en) * | 2007-11-28 | 2009-06-10 | 维妙实业有限公司 | Area light source device and method for making same |
| CN201787495U (en) * | 2010-08-16 | 2011-04-06 | 深圳帝光电子有限公司 | Light guide plate, backlight source and lighting device |
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2010
- 2010-08-16 CN CN2010102541808A patent/CN102374493A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2336378Y (en) * | 1998-03-02 | 1999-09-01 | 宋义 | Uniform high-efficiency side-luminous backlight source |
| CN1397827A (en) * | 2001-07-13 | 2003-02-19 | 三星电子株式会社 | Optical plate, its mfg. and liquid crystal display having same optical plate |
| CN101452146A (en) * | 2007-11-28 | 2009-06-10 | 维妙实业有限公司 | Area light source device and method for making same |
| CN201787495U (en) * | 2010-08-16 | 2011-04-06 | 深圳帝光电子有限公司 | Light guide plate, backlight source and lighting device |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675990A (en) * | 2013-12-26 | 2014-03-26 | 深圳Tcl新技术有限公司 | Curved light guide plate and manufacturing method thereof |
| CN103675990B (en) * | 2013-12-26 | 2017-05-03 | 深圳Tcl新技术有限公司 | Curved light guide plate and manufacturing method thereof |
| US9902644B2 (en) | 2014-06-19 | 2018-02-27 | Corning Incorporated | Aluminosilicate glasses |
| US10173920B2 (en) | 2014-06-19 | 2019-01-08 | Corning Incorporated | Aluminosilicate glasses |
| US11001521B2 (en) | 2014-06-19 | 2021-05-11 | Corning Incorporated | Aluminosilicate glasses |
| CN104880760A (en) * | 2015-06-01 | 2015-09-02 | 京东方科技集团股份有限公司 | Backlight module and peep-proof display device |
| US9885821B2 (en) | 2015-06-01 | 2018-02-06 | Boe Technology Group Co., Ltd. | Backlight module and anti-peeping display device |
| CN111602001A (en) * | 2018-01-12 | 2020-08-28 | Lg伊诺特有限公司 | Lighting module and lighting device with same |
| US11519568B2 (en) | 2018-01-12 | 2022-12-06 | Lg Innotek Co., Ltd. | Lighting module and lighting device having same |
| US11796139B2 (en) | 2018-01-12 | 2023-10-24 | Lg Innotek Co., Ltd. | Lighting module and lighting device having same |
| CN114137652A (en) * | 2021-12-07 | 2022-03-04 | 华玻视讯(珠海)科技有限公司 | Novel glass light guide plate |
| CN114137652B (en) * | 2021-12-07 | 2023-11-28 | 华玻视讯(珠海)科技有限公司 | Glass light guide plate |
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Application publication date: 20120314 |