CN103246005A - Light guide plate - Google Patents
Light guide plate Download PDFInfo
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- CN103246005A CN103246005A CN2012100241954A CN201210024195A CN103246005A CN 103246005 A CN103246005 A CN 103246005A CN 2012100241954 A CN2012100241954 A CN 2012100241954A CN 201210024195 A CN201210024195 A CN 201210024195A CN 103246005 A CN103246005 A CN 103246005A
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- microstructure
- guide plate
- light guide
- microstructures
- light
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- Light Guides In General And Applications Therefor (AREA)
- Liquid Crystal (AREA)
Abstract
The invention provides a light guide plate which comprises a light incident surface, a light emitting surface connected with the light incident surface, and a bottom surface opposite to the light emitting surface, wherein a plurality of first microstructures and second microstructures are arranged on the light incident surface, and the first microstructures are positioned on outer sides of the second microstructures, so that light from the light source penetrates through the first microstructures and the second microstructures and then enters the light guide plate. According to the invention, as the light incident surface of the light guide plate is provided with first microstructures and second microstructures, and light from the light source penetrates through the first microstructures and the second microstructures and then enters the light guide plate, through refraction of the first microstructures 11 and the second microstructures 13, the divergence angle of the LED light source is increased, and energy of the LED light source can be uniformly spread out, so that the Hot Spot phenomenon can be effectively avoided.
Description
Technical field
The present invention relates to a kind of support, relate in particular to the light guide plate that a kind of incidence surface has microstructure.
Background technology
Advantage such as that liquid crystal indicator has is light, thin, power consumption is little is widely used in the modernized information equipment.Because the liquid crystal itself in the display panels is not had a characteristics of luminescence, for reaching display effect, must provide a planar light source device to display panels, as backlight module, the function of this planar light source device is to provide briliancy abundant and even area source to display panels.For led light source, because it is bigger to have the energy of a limited angle of divergence and bright dipping place during the LED bright dipping, so when light guide plate is lighted by LED, can see significantly bright dark phenomenon at the light inlet of light guide plate, namely be the Hot Spot that is commonly called as, so after light guide plate covers glass, can cause the quality of LED light inlet not good.
Summary of the invention
In view of this, the invention provides a kind of light guide plate so that the light that led light source sends can effectively evenly be dispersed when entering light guide plate.
A kind of light guide plate, comprise an incidence surface, exiting surface and with this an exiting surface relative bottom surface continuous with incidence surface, this incidence surface is provided with plural first microstructure and second microstructure, this first microstructure is positioned at the outside of this second microstructure, can enter in this light guide plate after making light from light source pass to pass this second microstructure again after this first microstructure.
The incidence surface of light guide plate of the present invention has first microstructure and second microstructure, pass from the light of light source and can enter in this light guide plate after passing this second microstructure again after this first microstructure, refraction through first microstructure 11 and second microstructure 13, the angle of divergence of led light source increases, make the energy of led light source evenly to scatter, thereby effectively avoid Hot Spot phenomenon.
Description of drawings
Fig. 1 is the stereographic map of light guide plate of the present invention.
Fig. 2 is the vertical view of light guide plate of the present invention.
Fig. 3 is the energy distribution of demonstration led light source and the graph of a relation of beam angle.
The main element symbol description
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100 |
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10 |
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11 |
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13 |
| The |
15 |
| Exiting |
20 |
| The |
30 |
Following embodiment will further specify the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Consult Fig. 1 and Fig. 2, light guide plate 100 comprise incidence surface 10, exiting surface 20 and with exiting surface 20 opposed bottom surface 30.In the present embodiment, these light guide plate 100 integral body are tabular, and it can be made by materials such as acryl resin, polycarbonate or polyvinyl resins.In other embodiments, this light guide plate 100 can be set to other shape as required, as wedge shape.
This incidence surface 10 is provided with plural first microstructure 11 and plural second microstructure 13, this first microstructure 11 is positioned at the outside of this second microstructure 13, so, light source need pass and pass this second microstructure 13 again after this first microstructure 11 and can enter in this light guide plate 100.
In the present embodiment, this first microstructure 11 has the xsect of arc, and it protrudes from this incidence surface 10, and it extends to this bottom surface 30 from exiting surface 20 always, is formed with gap 15 between itself and the incidence surface 10.Be appreciated that ground, the xsect of this first microstructure 11 can have more and need be set to other shape, as triangle.
In the present embodiment, this second microstructure 13 is the semi-cylindrical in configuration of protruding from incidence surface 10, and it extends to this bottom surface 30 from exiting surface 20 always, and is positioned at this gap 15.
In the present embodiment, when making this light guide plate 100, at first utilize Ultraprecision Machining to cut out this plural number first microstructure 11 at blank, and then cut out plural second microstructure 13.Being appreciated that ground, only is the relative position relation that illustrates this first microstructure 11 and second microstructure 13 among Fig. 1 and 2, is familiar with size and quantity that those skilled in the art can adjust first microstructure 11 and second microstructure 13 as required.
Consult Fig. 3, the led light source energy is to present Gaussian distribution, so the energy of 0 degree beam angle can be bigger than the energy of 60 degree beam angles, refraction through first microstructure 11 and second microstructure 13, the angle of divergence of led light source increases, make the energy of led light source evenly to scatter, thereby effectively avoid Hot Spot phenomenon.
Claims (6)
1. light guide plate, comprise an incidence surface, exiting surface and with this an exiting surface relative bottom surface continuous with incidence surface, this incidence surface is provided with plural first microstructure and second microstructure, it is characterized in that: this first microstructure is positioned at the outside of this second microstructure, can enter in this light guide plate after making light from light source pass to pass this second microstructure again after this first microstructure.
2. light guide plate as claimed in claim 1 is characterized in that, this first microstructure has the xsect of arc.
3. light guide plate as claimed in claim 1 is characterized in that, this second microstructure has half-cylindrical xsect.
4. light guide plate as claimed in claim 1 is characterized in that, this second microstructure is the half-cylindrical projection that is formed on the incidence surface, this first microstructure from incidence surface protrude and and incidence surface between be formed with the gap to hold second microstructure.
5. light guide plate as claimed in claim 1 is characterized in that, this light guide plate is plate shaped or wedge shape.
6. light guide plate as claimed in claim 1 is characterized in that, the material of this light guide plate is acryl resin, polycarbonate or polyvinyl resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210024195.4A CN103246005B (en) | 2012-02-04 | 2012-02-04 | Light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210024195.4A CN103246005B (en) | 2012-02-04 | 2012-02-04 | Light guide plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103246005A true CN103246005A (en) | 2013-08-14 |
| CN103246005B CN103246005B (en) | 2017-05-24 |
Family
ID=48925637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210024195.4A Active CN103246005B (en) | 2012-02-04 | 2012-02-04 | Light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103246005B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604066A (en) * | 2013-11-13 | 2014-02-26 | 深圳市华星光电技术有限公司 | Backlight module |
| CN107127987A (en) * | 2017-07-10 | 2017-09-05 | 东莞合安机电有限公司 | Light guide plate hits a machine |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11265610A (en) * | 1998-03-17 | 1999-09-28 | Enplas Corp | Light emitting diode, sidelight type surface light source device and liquid crystal displace device |
| US20070139968A1 (en) * | 2005-10-28 | 2007-06-21 | Hon Hai Precision Industry Co., Ltd. | Light guide plate and backlight module using the same |
| US20070217226A1 (en) * | 2006-03-17 | 2007-09-20 | Hon Hai Precision Industry Co., Ltd. | Light guide plate with light diffusing cutout and backlight module using the same |
| CN201004094Y (en) * | 2007-01-22 | 2008-01-09 | 瑞仪光电股份有限公司 | Light guiding board for light source with equable dispersion |
| CN101196597A (en) * | 2006-12-08 | 2008-06-11 | 鸿富锦精密工业（深圳）有限公司 | Light conducting plate and back light module unit |
| US20090015753A1 (en) * | 2007-07-12 | 2009-01-15 | Wintek Corporation | Light guide place and light-diffusing structure thereof |
| CN101498810A (en) * | 2009-03-25 | 2009-08-05 | 友达光电股份有限公司 | Light conducting plate and backlight module employing the same |
| US20100238684A1 (en) * | 2009-03-19 | 2010-09-23 | Advanced Optoelectronic Technology, Inc. | Backlight module |
| CN102081189A (en) * | 2011-02-22 | 2011-06-01 | 苏州茂立光电科技有限公司 | Light guide plate, illuminating device and manufacturing method of light guide plate |
-
2012
- 2012-02-04 CN CN201210024195.4A patent/CN103246005B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11265610A (en) * | 1998-03-17 | 1999-09-28 | Enplas Corp | Light emitting diode, sidelight type surface light source device and liquid crystal displace device |
| US20070139968A1 (en) * | 2005-10-28 | 2007-06-21 | Hon Hai Precision Industry Co., Ltd. | Light guide plate and backlight module using the same |
| US20070217226A1 (en) * | 2006-03-17 | 2007-09-20 | Hon Hai Precision Industry Co., Ltd. | Light guide plate with light diffusing cutout and backlight module using the same |
| CN101196597A (en) * | 2006-12-08 | 2008-06-11 | 鸿富锦精密工业（深圳）有限公司 | Light conducting plate and back light module unit |
| CN201004094Y (en) * | 2007-01-22 | 2008-01-09 | 瑞仪光电股份有限公司 | Light guiding board for light source with equable dispersion |
| US20090015753A1 (en) * | 2007-07-12 | 2009-01-15 | Wintek Corporation | Light guide place and light-diffusing structure thereof |
| US20100238684A1 (en) * | 2009-03-19 | 2010-09-23 | Advanced Optoelectronic Technology, Inc. | Backlight module |
| CN101498810A (en) * | 2009-03-25 | 2009-08-05 | 友达光电股份有限公司 | Light conducting plate and backlight module employing the same |
| CN102081189A (en) * | 2011-02-22 | 2011-06-01 | 苏州茂立光电科技有限公司 | Light guide plate, illuminating device and manufacturing method of light guide plate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604066A (en) * | 2013-11-13 | 2014-02-26 | 深圳市华星光电技术有限公司 | Backlight module |
| WO2015070452A1 (en) * | 2013-11-13 | 2015-05-21 | 深圳市华星光电技术有限公司 | Backlight module |
| CN107127987A (en) * | 2017-07-10 | 2017-09-05 | 东莞合安机电有限公司 | Light guide plate hits a machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103246005B (en) | 2017-05-24 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cai Qiang Inventor after: Deng Guohua Inventor after: Yu Xiaofeng Inventor after: Yao Shu Inventor after: Li Weiping Inventor before: Wang Heliying |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170420 Address after: 523000 Guangdong city of Dongguan province Hengli Town West industrial area two building, building B5 (B4 C, D plant) Applicant after: DONGGUAN HENGYANG PHOTOELECTRIC Co.,Ltd. Address before: Tianhe District Tong East Road Guangzhou city Guangdong province 510665 B-101 No. 5, room B-118 Applicant before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20170420 Address after: Tianhe District Tong East Road Guangzhou city of Guangdong Province, No. 5, room B-118 B-101 Applicant after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Applicant before: HONG FU JIN PRECISION INDUSTRY (SHENZHEN) Co.,Ltd. Applicant before: HON HAI PRECISION INDUSTRY Co.,Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |