CN201487831U - Light guide plate and backlight module - Google Patents
Light guide plate and backlight module Download PDFInfo
- Publication number
- CN201487831U CN201487831U CN2009202043932U CN200920204393U CN201487831U CN 201487831 U CN201487831 U CN 201487831U CN 2009202043932 U CN2009202043932 U CN 2009202043932U CN 200920204393 U CN200920204393 U CN 200920204393U CN 201487831 U CN201487831 U CN 201487831U
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- China
- Prior art keywords
- lgp
- light source
- led light
- diffusion
- groove
- 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
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- 238000009792 diffusion process Methods 0.000 claims abstract description 31
- 239000002245 particle Substances 0.000 claims description 10
- 238000004020 luminiscence type Methods 0.000 claims description 6
- 241001502122 Pyrrhocoris apterus Species 0.000 abstract 1
- 230000003190 augmentative effect Effects 0.000 abstract 1
- 239000011859 microparticle Substances 0.000 abstract 1
- 241000254158 Lampyridae Species 0.000 description 21
- 230000007547 defect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 1
- -1 cyclic olefin Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Abstract
The utility model provides a light guide plate and a backlight module. The light guide plate is provided with at least one light incidence surface, wherein the light incidence surface is provided with at least one groove used for accommodating an LED light source; and the groove is internally provided with a diffusion micro-structure or a diffusion micro-particle that has a light diffusion function. By adopting the structure, the incidence angle of the LED light source is augmented, thus reducing the areas on the light guide plate on which the firebug phenomenon occurs, thereby improving the efficiency of the light guide plate.
Description
[technical field]
The utility model relates to a kind of LGP and module backlight, particularly a kind of module backlight that is used for the LGP of LCDs and possesses this LGP.
[background technology]
Along with development of science and technology, lcd technology is more and more ripe.LCDs generally needs module backlight 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 the CCFL light source that wire is come instead of linear as spot light.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 notion of environmental protection simultaneously.Yet, adopt LED as the side-light type of light source module backlight in, significantly bright dark alternately phenomenon can appear near the incidence surface of LGP, the firefly phenomenon that also promptly is commonly called as.If can not effectively handle this firefly phenomenon, will reduce effective light-emitting zone of LGP, and cause screen defect.
Fig. 1 a has shown the module backlight that the firefly phenomenon occurs.Fig. 1 b is the partial enlarged drawing of the module backlight shown in Fig. 1 a.With reference to figure 1a and Fig. 1 b, in this module backlight, the incidence surface of LGP 10 is provided with a plurality of led light sources 11 simultaneously.Because light intensity bigger highlights 101 and the less low light level district 102 of light intensity can appear in the rising angle problem of led light source 11 near the incidence surface of LGP 10.Highlights 101 and low light level district 102 have tangible light-intensity difference, also are so-called firefly phenomenon.If the shading region of LCDs can not effectively block the zone that this firefly phenomenon occurs, then can form screen defect.Suppose to occur on the LGP 10 the firefly phenomenon the zone length with H represent, centre distance between the led light source 11 of two adjacent settings on the incidence surface of LGP 10 represents with a, and the width of the shading region of LCDs is represented with b.At present, a kind of method that solves above-mentioned firefly phenomenon is the width b that increases shading region, makes the width b of shading region more than or equal to the length H:b＞=H in the zone that the firefly phenomenon occurs.Another kind method is under the constant situation of the width b of shading region, reduces the length H in the zone of firefly phenomenon by the centre distance a between the led light source 11 that reduces two adjacent settings.Yet, these two kinds of methods or the effective viewing area that has reduced LCDs, or increased the quantity of LED, improved the cost of product.
[summary of the invention]
Technical problem to be solved in the utility model provides a kind of efficient LGP and module backlight that can solve above-mentioned firefly phenomenon.
The utility model provides a kind of LGP, and this LGP has at least one incidence surface, and this incidence surface is provided with at least one groove that is used to hold led light source, is provided with the diffusion micro-structural or the diffusion particle that possess light diffusion function in the groove.
According to the utility model one preferred embodiment, the degree of depth of groove is more than or equal to the height of the encapsulated layer of led light source.
According to the utility model one preferred embodiment, the diffusion micro-structural is over against the luminescence chip of led light source.
According to the utility model one preferred embodiment, the diffusion micro-structural is the concave surface curved surface.
According to the utility model one preferred embodiment, the radius of curvature of concave surface curved surface is between 1 μ m-10mm.
According to the utility model one preferred embodiment, the diffusion micro-structural is the concave surface sphere.
According to the utility model one preferred embodiment, the radius of curvature of concave surface sphere is between 1 μ m-10mm.
According to the utility model one preferred embodiment, diffusion particle is over against the luminescence chip of led light source.
The present invention further provides a kind of module backlight, this module backlight comprises above-mentioned LGP and is arranged at the interior led light source of LGP groove.
According to LGP of the present utility model and module backlight, by on the incidence surface of LGP, being provided for holding at least one groove of led light source and diffusion micro-structural or diffusion particle is set in groove and effectively increased the incident angle of led light source, and then greatly reduced the zone that the firefly phenomenon occurs, make shading region can block the zone that the firefly phenomenon occurs fully, solved the screen defect that forms owing to the firefly phenomenon, improved the efficient of LGP, and implementation is simple, flexible, and effect is obvious.
[description of drawings]
Fig. 1 a has shown a kind of module backlight of appearance firefly phenomenon of prior art.
Fig. 1 b is the partial enlarged drawing of the module backlight shown in Fig. 1 a.
Fig. 2 a has shown module backlight of the present utility model.
Fig. 2 b is the partial enlarged drawing of the module backlight of the present utility model shown in Fig. 2 a.
[specific embodiment]
Below in conjunction with drawings and Examples the utility model is elaborated.
Fig. 2 a has shown module backlight of the present utility model.Fig. 2 b is the partial enlarged drawing of the module backlight of the present utility model shown in Fig. 2 a.Simultaneously with reference to figure 2a and Fig. 2 b, in module backlight of the present utility model,, on the incidence surface of LGP 20, be provided with the groove 22 that at least one is used to hold led light source 21 for the light that increases led light source 21 incides incident angle in the LGP 20.The degree of depth of groove 22 is more than or equal to the height of the encapsulated layer of led light source 21.In groove 22, diffusion micro-structural 23 is set in the position over against the luminescence chip of led light source 21.When light was mapped on this diffusion micro-structural 23, this diffusion micro-structural 23 made light spread, and made the incident angle that incides the light in the LGP 20 greater than 120 °, even reached 180 °.Along with the increase of incident angle, the zone that the firefly phenomenon occurs reduces, and then makes the shading region of LCDs can block the zone that the firefly phenomenon occurs fully.
In the present embodiment, diffusion micro-structural 23 can be rule or irregular concave surface curved surface, rule or irregular concave surface sphere.Wherein, the radius of curvature of above-mentioned concave surface sphere or concave surface curved surface is between 1 μ m-10mm.
In the above-described embodiment, be to adopt diffusion micro-structural 23 to increase incident angle, yet in other embodiments of the present utility model, also can increase incident angle in groove 22 by the mode that diffusion particle is set.Its principle is identical with the principle that employing diffusion micro-structural 23 increases incident angle, when the illumination that luminescence chip sent of led light source 21 be mapped to it over against diffusion particle on the time, diffusion particle makes light spread, and then make the incident angle that incides the light in the LGP 20, even reach 180 ° greater than 120 °.Like this, along with the increase of incident angle, the zone that the firefly phenomenon occurs reduces, and then makes the shading region of LCDs can block the zone that the firefly phenomenon occurs fully.
In the present embodiment, the diffusion particle in the groove 22 can be polymethacrylates (PMMA), Merlon (PC) or copolymerization cyclic olefin grog materials such as (COC).
According to LGP of the present utility model and module backlight, by on the incidence surface of LGP, being provided for holding at least one groove of led light source and diffusion micro-structural or diffusion particle is set in groove and effectively increased the incident angle of led light source, and then greatly reduced the zone that the firefly phenomenon occurs, make shading region can block the zone that the firefly phenomenon occurs fully, solved the screen defect that forms owing to the firefly phenomenon, improved the efficient of LGP, and implementation is simple, flexible, and effect is obvious.
Above with reference to description of drawings various preferred embodiments of the present utility model; but only otherwise deviate from essence of the present utility model and scope; those skilled in the art can carry out modifications and changes on the various forms to it, all belongs to protection domain of the present utility model.
Claims (9)
1. LGP, described LGP has at least one incidence surface, it is characterized in that, and described incidence surface is provided with at least one groove that is used to hold led light source, is provided with the diffusion micro-structural or the diffusion particle that possess light diffusion function in the described groove.
2. LGP according to claim 1 is characterized in that the degree of depth of described groove is more than or equal to the height of the encapsulated layer of described led light source.
3. LGP according to claim 1 is characterized in that, described diffusion micro-structural is over against the luminescence chip of described led light source.
4. LGP according to claim 3 is characterized in that, described diffusion micro-structural is the concave surface curved surface.
5. LGP according to claim 4 is characterized in that, the radius of curvature of described concave surface curved surface is between 1 μ m-10mm.
6. LGP according to claim 3 is characterized in that, described diffusion micro-structural is the concave surface sphere.
7. LGP according to claim 6 is characterized in that, the radius of curvature of described concave surface sphere is between 1 μ m-10mm.
8. LGP according to claim 1 is characterized in that described diffusion particle is over against the luminescence chip of described led light source.
9. a module backlight is characterized in that, described module backlight comprise as any described LGP of claim 1-8 and as described in being arranged in the groove as described in led light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202043932U CN201487831U (en) | 2009-09-08 | 2009-09-08 | Light guide plate and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202043932U CN201487831U (en) | 2009-09-08 | 2009-09-08 | Light guide plate and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201487831U true CN201487831U (en) | 2010-05-26 |
Family
ID=42426710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202043932U Expired - Fee Related CN201487831U (en) | 2009-09-08 | 2009-09-08 | Light guide plate and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201487831U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287648A (en) * | 2011-08-09 | 2011-12-21 | 陈晓锋 | Multidirectional light-emitting diode (LED) illumination lamp |
| WO2016183854A1 (en) * | 2015-05-19 | 2016-11-24 | 武汉华星光电技术有限公司 | Backlight unit and display device |
| CN111308826A (en) * | 2014-02-19 | 2020-06-19 | 广州奥翼电子科技股份有限公司 | Electronic paper display screen |
-
2009
- 2009-09-08 CN CN2009202043932U patent/CN201487831U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287648A (en) * | 2011-08-09 | 2011-12-21 | 陈晓锋 | Multidirectional light-emitting diode (LED) illumination lamp |
| CN111308826A (en) * | 2014-02-19 | 2020-06-19 | 广州奥翼电子科技股份有限公司 | Electronic paper display screen |
| WO2016183854A1 (en) * | 2015-05-19 | 2016-11-24 | 武汉华星光电技术有限公司 | Backlight unit and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FLAT PANEL DISPLAY TECHNOLOGY CENTER, NANHAI, FOSH |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518053 KONKA GROUP, OVERSEAS CHINESE TOWN, NANSHAN DISTRICT, SHENZHEN CITY,GUANGDONG PROVINCE TO: 518053 NO.9008, SHENNAN AVENUE, OVERSEAS CHINESE CITY, NANSHAN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101213 Address after: 518053 Nanshan District, Guangdong overseas Chinese town Shennan Road, No. 9008, No. Co-patentee after: Foshan Nanhai Panel Display Technology Center Patentee after: Konka Group Co., Ltd. Address before: 518053 Nanshan District, Guangdong, Oct Konka Group Patentee before: Konka Group Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20120908 |