CN103376495A - Light guide plate and backlight module - Google Patents
Light guide plate and backlight module Download PDFInfo
- Publication number
- CN103376495A CN103376495A CN2012101134216A CN201210113421A CN103376495A CN 103376495 A CN103376495 A CN 103376495A CN 2012101134216 A CN2012101134216 A CN 2012101134216A CN 201210113421 A CN201210113421 A CN 201210113421A CN 103376495 A CN103376495 A CN 103376495A
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- guide plate
- light guide
- thin film
- optical thin
- film layer
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Abstract
The invention discloses a light guide plate. The light guide plate has at least one surface of incidence, wherein an optical thin film layer is adhered onto the surface of incidence; and a plurality of trenches are disposed in one side face of the optical thin film layer, the side face being far away from the light guide plate. The light guide plate is simple in structure and convenient for processing, and can rapidly improve a firefly problem of a lateral LED liquid crystal display screen.
Description
Technical field
The present invention relates to a kind of light guide plate and backlight module, especially a kind of for the light guide plate of LCDs and the backlight module that possesses this kind light guide plate.
Background technology
Along with the development of science and technology, liquid crystal display is more and more ripe.Liquid crystal display generally needs backlight module that light source is provided as passive luminous display screen.Compared to the CCFL light source, LED generally adopts a plurality of discrete LED to be arranged in wire and replaces linear CCFL light source as pointolite.The advantages such as that LED not only has is frivolous, power saving, volume is little, the life-span is long, low-voltage, startup are fast also possess the concept of environmental protection simultaneously.Yet, in adopting the side-light backlight module of LED as light source, near the incidence surface of light guide plate the significantly bright effective light-emitting zone that secretly replaces, the firefly phenomenon that also namely is commonly called as can appear.If can not effectively process this firefly phenomenon, will reduce effective light-emitting zone of light guide plate, and cause screen defect.
The method one that solves above-mentioned firefly phenomenon is the width that adopt to increase shading region, makes it at least greater than the length in the zone that the firefly phenomenon occurs; Two of method is in the constant situation of shading region width, thereby reduces the length that firefly phenomenon zone occurs by the distance between two led light sources that reduce adjacent setting.Yet, these two kinds of methods or the effective display area territory that has reduced LCDs, or increased the quantity of LED, improved the cost of product.
So people begin to adopt the incidence surface in light guide plate to carry out design grid point or machining place groove, but net-pont design is loaded down with trivial details, and the proving time is long; Machining groove cost is high, and the time is also long, and can't effectively improve fast the light inlet section firefly phenomenon of backlight.
Summary of the invention
In order to overcome defects, the invention provides a kind of light guide plate and backlight module, this light conducting plate structure is simple, and is easy to process, can improve fast the firefly problem of side entering type LED LCDs.
The present invention for the technical scheme that solves its technical matters and adopt is: a kind of light guide plate, has at least one incidence surface, attach one deck optical thin film layer at described incidence surface, and this optical thin film layer is provided with several grooves in the side away from described light guide plate.
As a further improvement on the present invention, several grooves on the described optical thin film layer are the periodic regularity distribution of same structure unit.
As a further improvement on the present invention, several grooves on the described optical thin film layer are the regular combination distribution in different structure unit.
As a further improvement on the present invention, the profile of described several grooves is band pinnacle corner saw profile of tooth.
As a further improvement on the present invention, the profile of described several grooves is the serrate with the dome angle.
The present invention also provides a kind of backlight module, and described backlight module comprises the above-mentioned light guide plate of power and is attached at optical thin film layer on the light guide plate incidence surface, and this optical thin film layer is provided with several grooves in the side away from described light guide plate.
The invention has the beneficial effects as follows: attach by the incidence surface in light guide plate and be with fluted optical thin film, incidence surface formation broached-tooth design in light guide plate increases beam angle and shortens light mixing distance, improves the firefly problem of side entering type LED LCDs thereby can arrange in pairs or groups fast.It is not only easy to process, and cost is low, and the cycle is short, can dwindle cost of products, and enterprise competitiveness is provided.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is A section structure for amplifying synoptic diagram among Fig. 1;
Fig. 3 is optical principle synoptic diagram of the present invention;
Fig. 4 is B section structure for amplifying synoptic diagram among Fig. 3.
By reference to the accompanying drawings, make the following instructions:
1---light guide plate 2---incidence surface
3---optical thin film layer 4---groove
5---led light source 6---substrate
7---light
Embodiment
A kind of light guide plate 1, as shown in Figure 1, 2, at incidence surface 2 attaching one deck optical thin film layers 3 of light guide plate 1, and this optical thin film layer 3 is provided with several grooves 4 in the side away from light guide plate 1.In the present embodiment, several grooves are the distribution of same structure unit periodic regularity, and the profile of each groove is band pinnacle corner saw profile of tooth.Certainly, several grooves also can be the regular combination in different structure unit and distribute, and the profile of its groove also can be the serrate with the dome angle.
A kind of backlight module, (only draw the part assembly) as shown in Figure 3, it comprises substrate 6, led light source 5 and above-mentioned light guide plate 1, incidence surface in light guide plate 1 is the optical thin film layer 3 that is pasted with serrate ditch 4 near a side of led light source 5, and like this, the light 7 that led light source sends is through the refraction action of the groove on the optical thin films of with groove, spread, thereby the shortening light mixing distance reduces firefly phenomenon zone, and its optical principle as shown in Figure 4.
Above embodiment is with reference to accompanying drawing; to a preferred embodiment of the present invention will be described in detail; those skilled in the art is by carrying out modification or the change on the various forms to above-described embodiment, but do not deviate from the situation of essence of the present invention, all belongs within protection scope of the present invention.
Claims (6)
1. a light guide plate has at least one incidence surface, it is characterized in that: attach one deck optical thin film layer at described incidence surface, and this optical thin film layer is provided with several grooves in the side away from described light guide plate.
2. light guide plate according to claim 1 is characterized in that: several grooves on the described optical thin film layer are same structure unit periodic regularity and distribute.
3. light guide plate according to claim 1 is characterized in that: several grooves on the described optical thin film layer are the regular combination in different structure unit and distribute.
4. light guide plate according to claim 1 is characterized in that: the profile of described several grooves is band pinnacle corner saw profile of tooth.
5. light guide plate according to claim 1, it is characterized in that: the profile of described several grooves is the serrate with the dome angle.
6. backlight module, it is characterized in that: described backlight module comprises each described light guide plate in the claim 1 to 5 and is attached at optical thin film layer on the light guide plate incidence surface, and this optical thin film layer is provided with several grooves in the side away from described light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101134216A CN103376495A (en) | 2012-04-18 | 2012-04-18 | Light guide plate and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101134216A CN103376495A (en) | 2012-04-18 | 2012-04-18 | Light guide plate and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103376495A true CN103376495A (en) | 2013-10-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101134216A Pending CN103376495A (en) | 2012-04-18 | 2012-04-18 | Light guide plate and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103376495A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016058332A1 (en) * | 2014-10-13 | 2016-04-21 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN106125188A (en) * | 2016-06-29 | 2016-11-16 | 中国人民解放军63983部队 | A kind of area source leaded light colour mixture structure and there is the illuminating lamp of this leaded light colour mixture structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601353A (en) * | 2003-09-23 | 2005-03-30 | 统宝光电股份有限公司 | Backlight modular of Two-D display |
| CN201606821U (en) * | 2009-12-26 | 2010-10-13 | 比亚迪股份有限公司 | Light guide plate and back light module |
| CN201858541U (en) * | 2010-07-22 | 2011-06-08 | 歌尔声学股份有限公司 | LED (light-emitting module) backlight module and display equipment with same |
| CN202583503U (en) * | 2012-04-18 | 2012-12-05 | 昆山康佳电子有限公司 | Light guide plate and backlight module |
-
2012
- 2012-04-18 CN CN2012101134216A patent/CN103376495A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601353A (en) * | 2003-09-23 | 2005-03-30 | 统宝光电股份有限公司 | Backlight modular of Two-D display |
| CN201606821U (en) * | 2009-12-26 | 2010-10-13 | 比亚迪股份有限公司 | Light guide plate and back light module |
| CN201858541U (en) * | 2010-07-22 | 2011-06-08 | 歌尔声学股份有限公司 | LED (light-emitting module) backlight module and display equipment with same |
| CN202583503U (en) * | 2012-04-18 | 2012-12-05 | 昆山康佳电子有限公司 | Light guide plate and backlight module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016058332A1 (en) * | 2014-10-13 | 2016-04-21 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN106125188A (en) * | 2016-06-29 | 2016-11-16 | 中国人民解放军63983部队 | A kind of area source leaded light colour mixture structure and there is the illuminating lamp of this leaded light colour mixture structure |
| CN106125188B (en) * | 2016-06-29 | 2019-11-26 | 中国人民解放军63983部队 | A kind of area source leaded light colour mixture structure and the headlamp with the leaded light colour mixture structure |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131030 |