CN103246005B - Light guide plate - Google Patents
Light guide plate Download PDFInfo
- Publication number
- CN103246005B CN103246005B CN201210024195.4A CN201210024195A CN103246005B CN 103246005 B CN103246005 B CN 103246005B CN 201210024195 A CN201210024195 A CN 201210024195A CN 103246005 B CN103246005 B CN 103246005B
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- Prior art keywords
- guide plate
- micro
- structural
- light guide
- microstructures
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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
There is the light guide plate of micro-structural the present invention relates to a kind of support, more particularly to a kind of incidence surface.
Background technology
Liquid crystal display device has the advantages that light, thin, power consumption is small, is widely used in modernization information equipment.Due to liquid
Liquid crystal in LCD panel does not have the characteristics of luminescence in itself, to reach display effect, it is necessary to provide one side to liquid crystal display panel
Light supply apparatus, such as backlight module, the function of the planar light source device be to liquid crystal display panel provide briliancy fully and it is uniform it
Area source.It is larger with the energy at limited an angle of divergence and light extraction during due to LED light extractions for LED light source, so
When light guide plate is lighted by LED, obvious bright dim phenomenon can be seen in the light inlet of light guide plate, be the Hot Spot being commonly called as,
So can cause the quality of LED light inlets not good after light guide plate covers glass.
The content of the invention
In view of this, the light that the present invention provides a kind of light guide plate to enable LED light source to send enters effective during light guide plate
Uniform diverging.
A kind of light guide plate, including an incidence surface, an exiting surface being connected with incidence surface and a bottom relative with the exiting surface
Face, the incidence surface is provided with plural first micro-structural and the second micro-structural, and first micro-structural is located at the outer of second micro-structural
Side so that the light from light source can enter in the light guide plate through after second micro-structural is then passed through after first micro-structural.
The incidence surface of light guide plate of the invention has the first micro-structural and the second micro-structural, the light from light source through this
Can enter in the light guide plate after second micro-structural is then passed through after one micro-structural, by the first micro-structural 11 and the second micro-structural
13 refraction, the angle of divergence increase of LED light source so that the energy of LED light source can uniformly scatter, so as to be prevented effectively from Hot
Spot phenomenons.
Brief description of the drawings
Fig. 1 is the stereogram of light guide plate of the invention.
Fig. 2 is the top view of light guide plate of the invention.
Fig. 3 is the graph of a relation of the Energy distribution and beam angle for showing LED light source.
Main element symbol description
| Light guide plate | 100 |
| Incidence surface | 10 |
| First micro-structural | 11 |
| Second micro-structural | 13 |
| Gap | 15 |
| Exiting surface | 20 |
| Bottom surface | 30 |
Following specific embodiment will further illustrate the present invention with reference to above-mentioned accompanying drawing.
Specific embodiment
Refering to Fig. 1 and Fig. 2, light guide plate 100 includes incidence surface 10, exiting surface 20 and the bottom surface relative with exiting surface 20
30.In the present embodiment, it is in tabular that the light guide plate 100 is overall, and it can be by acrylic resin, makrolon or polyethylene tree
The materials such as fat are made.In other embodiments, the light guide plate 100 can be arranged as required to be other shapes, such as wedge shape.
The incidence surface 10 is provided with plural first micro-structural 11 and plural second micro-structural 13, and first micro-structural 11 is located at
The outside of second micro-structural 13, in this way, light source needs to be then passed through second micro-structural 13 side through after first micro-structural 11
Can enter in the light guide plate 100.
In the present embodiment, first micro-structural 11 has the cross section of arc, and it protrudes from the incidence surface 10, and it is certainly
Exiting surface 20 extends to the bottom surface 30, and it is formed with gap 15 between incidence surface 10.It is to be appreciated that first micro- knot
The cross section of structure 11 can be arranged as required to be other shapes, such as triangle.
In the present embodiment, second micro-structural 13 is the semi-cylindrical in configuration from the protrusion of incidence surface 10, and it is from exiting surface
20 extend to the bottom surface 30, and in the gap 15.
In the present embodiment, when the light guide plate 100 is manufactured, cut on blank first with Ultraprecision Machining
Go out plural first micro-structural 11, plural second micro-structural 13 is then cut out again.It is to be appreciated that being only to illustrate in Fig. 1 and 2
Go out the relative position relation of the micro-structural 13 of the first micro-structural 11 and second, being familiar with those skilled in the art can adjust as needed
The size and quantity of the micro-structural 13 of whole first micro-structural 11 and second.
Refering to Fig. 3, LED light source energy is that Gaussian Profile is presented, so 0 degree of energy of beam angle can be than 60 degree of beam angles
Energy is big, and by the refraction of the first micro-structural 11 and the second micro-structural 13, the angle of divergence of LED light source increases so that LED light source
Energy can uniformly scatter, so as to be prevented effectively from Hot Spot phenomenons.
Claims (6)
1. a kind of light guide plate, an including incidence surface, an exiting surface being connected with incidence surface and a bottom surface relative with the exiting surface,
The incidence surface is provided with plural first micro-structural and the second micro-structural, it is characterised in that：First micro-structural is convex from the incidence surface
Go out and be formed with gap between the incidence surface, second micro-structural is located at the gap of the inner side of first micro-structural, makes
Obtaining the light from light source can enter in the light guide plate through after second micro-structural is then passed through after first micro-structural.
2. light guide plate as claimed in claim 1, it is characterised in that first micro-structural has the cross section of arc.
3. light guide plate as claimed in claim 1, it is characterised in that second micro-structural has semi-cylindrical cross section.
4. light guide plate as claimed in claim 1, it is characterised in that second micro-structural is the semicolumn being formed on incidence surface
Shape is raised.
5. light guide plate as claimed in claim 1, it is characterised in that the light guide plate is plate shaped or wedge shape.
6. light guide plate as claimed in claim 1, it is characterised in that the material of the light guide plate is acrylic resin, makrolon
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 CN103246005A (en) | 2013-08-14 |
| CN103246005B true 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) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604066B (en) * | 2013-11-13 | 2015-09-09 | 深圳市华星光电技术有限公司 | A backlight module |
| CN107127987B (en) * | 2017-07-10 | 2018-08-07 | 东莞合安机电有限公司 | Light guide plate hits a machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196597A (en) * | 2006-12-08 | 2008-06-11 | 鸿富锦精密工业（深圳）有限公司 | Light guide plate and backlight module |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11265610A (en) * | 1998-03-17 | 1999-09-28 | Enplas Corp | Light emitting diode, side light type surface light source device and liquid crystal display device |
| TWI275846B (en) * | 2005-10-28 | 2007-03-11 | Hon Hai Prec Ind Co Ltd | Light guide plate |
| TWI327666B (en) * | 2006-03-17 | 2010-07-21 | Hon Hai Prec Ind Co Ltd | Light guide plate 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 guide plate with light source uniformly diffused |
| US7808578B2 (en) * | 2007-07-12 | 2010-10-05 | Wintek Corporation | Light guide place and light-diffusing structure thereof |
| TW201035641A (en) * | 2009-03-19 | 2010-10-01 | Advanced Optoelectronic Tech | Backlight module |
| CN101498810B (en) * | 2009-03-25 | 2011-12-21 | 友达光电股份有限公司 | Light guide plate and backlight module using the light guide plate |
| 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196597A (en) * | 2006-12-08 | 2008-06-11 | 鸿富锦精密工业（深圳）有限公司 | Light guide plate and backlight module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103246005A (en) | 2013-08-14 |
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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 |