CN102943980A - Backlight module and liquid crystal display device - Google Patents
Backlight module and liquid crystal display device Download PDFInfo
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- CN102943980A CN102943980A CN2012104602839A CN201210460283A CN102943980A CN 102943980 A CN102943980 A CN 102943980A CN 2012104602839 A CN2012104602839 A CN 2012104602839A CN 201210460283 A CN201210460283 A CN 201210460283A CN 102943980 A CN102943980 A CN 102943980A
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- backlight module
- reflector plate
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- crystal display
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Abstract
The embodiment of the invention discloses a backlight module and a liquid crystal display device, which relate to the field of the liquid crystal display, and can effectively reduce the overall weight of the liquid crystal display device. The backlight module comprises a rear panel and a light source which is arranged on one side of the rear panel, and the backlight module also comprises a reflection sheet which is arranged on the rear panel and an optical membrane material which is arranged above the reflection sheet, an optical cavity is formed between the reflection sheet and the optical membrane material, the reflection sheet is provided with a plurality of micro structure projections, and the distribution density of the micro structure projections on the reflection sheet is gradually reduced along the direction of the light source.
Description
Technical field
The present invention relates to field of liquid crystal display, relate in particular to a kind of backlight module and liquid crystal indicator.
Background technology
Along with the progress of technology, liquid crystal display is towards more and more lighter, thin future development.In the prior art, LGP is an important optical element of liquid crystal display, itself and other optical element such as light source, reflecting plate, diffuser plate and prism plate consist of back light system, its effect be the light that sends of guiding point light source or line source from the exit facet outgoing, improve simultaneously the uniformity of panel glorious degrees and glorious degrees thereof.
The inventor finds that in research process there is following problem at least in prior art: because LGP has occupied the suitable weight and volume of liquid crystal display, so that the gross weight of liquid crystal display is difficult to reduce at present.
Summary of the invention
Embodiments of the invention technical problem to be solved is to provide a kind of backlight module and liquid crystal indicator, can effectively reduce the gross weight of liquid crystal display.
The application's one side, a kind of backlight module is provided, the light source that comprises backboard and be arranged on described backboard one side, also comprise the reflector plate that is arranged on the described backboard and the optical film material that is positioned at described reflector plate top, form optical cavities between described reflector plate and the described optical film material, be provided with a plurality of micro-structural projections on the described reflector plate, the distribution density of described micro-structural projection on described reflector plate reduces successively along the direction near described light source.
The height of formed optical cavities is 0.8mm-1.8mm between described reflector plate and the described optical film material.
The height of described micro-structural projection is 0.5mm-1mm.
The combination that is shaped as any one or at least two kinds of shapes in prism, pyramid, the spherical surface body of described micro-structural projection.
The surface of described micro-structural projection is coated with highly reflective material.
The height of described optical cavities is 1mm, 1.2mm or 1.5mm.
Described micro-structural projection is staggered at described reflector plate.
The application also provides a kind of liquid crystal indicator on the other hand, comprises above-described backlight module.
The backlight module of the embodiment of the invention and liquid crystal indicator, the micro-structural projection that changes successively by the density of setting at reflector plate, so that the light that light source sends enters reflector plate and optical film material form optical cavities after, can be uniformly from the optical film material outgoing, has identical effect with the backlight module that has LGP in the prior art, because the backlight module of present embodiment has saved this structure of LGP, so that the gross weight of liquid crystal display has reduced, has also saved production cost.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural scheme of mechanism of backlight module in the embodiment of the invention;
Fig. 2 is the schematic diagram that has the reflector plate of micro-structural projection in the embodiment of the invention.
The specific embodiment
The embodiment of the invention provides a kind of backlight module and liquid crystal indicator, can effectively reduce the gross weight of liquid crystal display.
In below describing, in order to illustrate rather than in order limiting, to have proposed the detail such as particular system structure, interface, technology, understand the present invention in order to thoroughly cut.Yet, not it will be clear to one skilled in the art that in having other embodiment of these details and can realize the present invention yet.In other situation, omit the detailed description to well-known device, circuit and method, in order to avoid unnecessary details hinders description of the invention.
The backlight module of present embodiment, as depicted in figs. 1 and 2, the light source 2 that comprises backboard 1 and be arranged on described backboard 1 one sides, wherein, light source 2 can be led light source, can be the light source of other kind also, is not construed as limiting at this.The backlight module of present embodiment also comprises the reflector plate 3 that is arranged on the described backboard 1 and the optical film material 4 that is positioned at described reflector plate 3 tops, form optical cavities between described reflector plate 3 and the described optical film material 4, be provided with a plurality of micro-structural projections 31 on the described reflector plate 3, the distribution density of described micro-structural projection 31 on described reflector plate 3 reduces successively along the direction near described light source 2.After the light that light source 2 sends enters optical cavities, because the effect of optical film material 4, total reflection occurs and propagates forward through the reflection continuation of reflector plate 3 in the light part that light source 2 sends at optical film material 4 places, another part is radiated on the micro-structural projection 31, because micro-structural projection 31 can change the direction of irradiation light thereon, makes light towards several direction outgoing, therefore, light is understood some outgoing and is gone out optical film material 4 after the effect of micro-structural projection 31.Obviously, intensity from the received light of the micro-structural projection 31 of light source 2 close to more is stronger, but because the distribution density of the micro-structural projection 31 of present embodiment on reflector plate 3 reduces successively along the direction near light source 2, namely the density of the position micro-structural projection 31 far away apart from light source 2 is larger, quantity is more, therefore, see on the whole that the light of outgoing is uniform substantially on whole optical film material 4 planes.
The backlight module of present embodiment, the micro-structural projection that changes successively by the density of setting at reflector plate, so that the light that light source sends enters reflector plate and optical film material form optical cavities after, can be uniformly from the optical film material outgoing, has identical effect with the backlight module that has LGP in the prior art, because the backlight module of present embodiment has saved this structure of LGP, so that the gross weight of liquid crystal display has reduced, has also saved production cost.
Further, the height H of formed optical cavities is 0.8mm-1.8mm between described reflector plate 3 and the described optical film material 4.In the prior art, because the restriction of the factors such as production technology, LGP must reach certain thickness, and the thinnest LGP can reach 2mm at present.Among the present invention, owing to saved LGP, therefore, apart from the restriction that can not be subjected to above-mentioned factor, can further dwindle between reflector plate 3 and the optical film material 4,0.8mm-1.8mm for example, and then can make liquid crystal display thinner.Preferably, the height H of optical cavities is 1mm, 1.2mm or 1.5mm.Accordingly, the height of micro-structural projection 31 is 0.5mm-1mm, and in design, the height of micro-structural projection 31 is generally half of height H of optical cavities.
Further, the combination that is shaped as any one or at least two kinds of shapes in prism, pyramid, the spherical surface body of described micro-structural projection.In the backlight module illustrated in figures 1 and 2, micro-structural projection 31 is the pyramid bodily form.
Further, for strengthening the reflecting effect of micro-structural projection 31, the surface of described micro-structural projection 31 is coated with highly reflective material.
Further, more even for making emergent light, avoid " bright line " occurring, as shown in Figure 2, described micro-structural projection 31 is staggered at described reflector plate 3.
The application also provides a kind of liquid crystal indicator on the other hand, comprises above-described backlight module.The structure of this backlight module does not repeat them here with above-mentioned embodiment.
The backlight module of the embodiment of the invention and liquid crystal indicator, the micro-structural projection that changes successively by the density of setting at reflector plate, so that the light that light source sends enters reflector plate and optical film material form optical cavities after, can be uniformly from the optical film material outgoing, has identical effect with the backlight module that has LGP in the prior art, because the backlight module of present embodiment has saved this structure of LGP, so that the gross weight of liquid crystal display has reduced, has also saved production cost.In addition, owing to saved LGP, therefore, distance can further be dwindled between reflector plate and the optical film material, and then can make liquid crystal display thinner.
The above; be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (8)
1. backlight module, the light source that comprises backboard and be arranged on described backboard one side, it is characterized in that, also comprise the reflector plate that is arranged on the described backboard and the optical film material that is positioned at described reflector plate top, form optical cavities between described reflector plate and the described optical film material, be provided with a plurality of micro-structural projections on the described reflector plate, the distribution density of described micro-structural projection on described reflector plate reduces successively along the direction near described light source.
2. backlight module according to claim 1 is characterized in that, the height of formed optical cavities is 0.8mm-1.8mm between described reflector plate and the described optical film material.
3. backlight module according to claim 1 and 2 is characterized in that, the height of described micro-structural projection is 0.5mm-1mm.
4. backlight module according to claim 1 and 2 is characterized in that, the combination that is shaped as any one or at least two kinds of shapes in prism, pyramid, the spherical surface body of described micro-structural projection.
5. backlight module according to claim 1 and 2 is characterized in that, the surface of described micro-structural projection is coated with highly reflective material.
6. backlight module according to claim 2 is characterized in that, the height of described optical cavities is 1mm, 1.2mm or 1.5mm.
7. backlight module according to claim 1 and 2 is characterized in that, described micro-structural projection is staggered at described reflector plate.
8. a liquid crystal indicator is characterized in that, comprises each described backlight module of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104602839A CN102943980A (en) | 2012-11-15 | 2012-11-15 | Backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104602839A CN102943980A (en) | 2012-11-15 | 2012-11-15 | Backlight module and liquid crystal display device |
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| CN102943980A true CN102943980A (en) | 2013-02-27 |
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| CN2012104602839A Pending CN102943980A (en) | 2012-11-15 | 2012-11-15 | Backlight module and liquid crystal display device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995311A (en) * | 2014-05-16 | 2014-08-20 | 京东方科技集团股份有限公司 | Light guide plate, backlight module and display device |
| WO2014166154A1 (en) * | 2013-04-07 | 2014-10-16 | 京东方科技集团股份有限公司 | Light guide plate and manufacturing method therefor, backlight source comprising same, and display device |
| CN104238186A (en) * | 2013-06-20 | 2014-12-24 | 扬升照明股份有限公司 | Backlight module |
| CN104375236A (en) * | 2014-11-26 | 2015-02-25 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and display |
| CN104375235A (en) * | 2014-11-26 | 2015-02-25 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and display |
| WO2016086451A1 (en) * | 2014-12-02 | 2016-06-09 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module, and liquid crystal display device |
| WO2016134562A1 (en) * | 2015-02-26 | 2016-09-01 | 深圳市华星光电技术有限公司 | Liquid crystal display and backlight module |
| WO2018145449A1 (en) * | 2017-02-09 | 2018-08-16 | 京东方科技集团股份有限公司 | Light guide plate positioning structure, backlight module, and display apparatus |
| CN109539186A (en) * | 2018-12-29 | 2019-03-29 | 深圳市晨北科技有限公司 | Backing structure |
| CN114815298A (en) * | 2022-04-28 | 2022-07-29 | 浙江大学 | Waveguide type high-uniformity directional backlight system for naked eye three-dimensional display |
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| KR101187748B1 (en) * | 2011-12-28 | 2012-10-09 | 주식회사 세코닉스 | Edge type back light unit without light guide plate and display apparatus using the same |
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| CN201867507U (en) * | 2010-10-29 | 2011-06-15 | 京东方科技集团股份有限公司 | Light guide plate, backlight module and liquid crystal display |
| CN102287690A (en) * | 2011-04-29 | 2011-12-21 | 友达光电股份有限公司 | Backlight module |
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Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014166154A1 (en) * | 2013-04-07 | 2014-10-16 | 京东方科技集团股份有限公司 | Light guide plate and manufacturing method therefor, backlight source comprising same, and display device |
| US9823410B2 (en) | 2013-04-07 | 2017-11-21 | Boe Technology Group Co., Ltd. | Light guiding plate and method for manufacturing the same and backlight source and display device comprising the same |
| CN104238186A (en) * | 2013-06-20 | 2014-12-24 | 扬升照明股份有限公司 | Backlight module |
| US9435929B2 (en) | 2013-06-20 | 2016-09-06 | Young Lighting Technology Inc. | Back light module |
| US20150331173A1 (en) * | 2014-05-16 | 2015-11-19 | Boe Technology Group Co., Ltd. | Light guide plate, backlight module and display device |
| CN103995311A (en) * | 2014-05-16 | 2014-08-20 | 京东方科技集团股份有限公司 | Light guide plate, backlight module and display device |
| US10018766B2 (en) * | 2014-05-16 | 2018-07-10 | Boe Technology Group Co., Ltd. | Light guide plate, backlight module and display device |
| CN103995311B (en) * | 2014-05-16 | 2017-01-25 | 京东方科技集团股份有限公司 | Light guide plate, backlight module and display device |
| CN104375236B (en) * | 2014-11-26 | 2017-10-24 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and display |
| CN104375236A (en) * | 2014-11-26 | 2015-02-25 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and display |
| CN104375235A (en) * | 2014-11-26 | 2015-02-25 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and display |
| CN104375235B (en) * | 2014-11-26 | 2017-03-08 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and display |
| WO2016086451A1 (en) * | 2014-12-02 | 2016-06-09 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module, and liquid crystal display device |
| GB2548752A (en) * | 2014-12-02 | 2017-09-27 | Shenzhen China Star Optoelect | Light guide plate, backlight module, and liquid crystal device |
| GB2548752B (en) * | 2014-12-02 | 2021-06-23 | Shenzhen China Star Optoelect | Light guide plate, backlight module, and liquid crystal display device |
| WO2016134562A1 (en) * | 2015-02-26 | 2016-09-01 | 深圳市华星光电技术有限公司 | Liquid crystal display and backlight module |
| WO2018145449A1 (en) * | 2017-02-09 | 2018-08-16 | 京东方科技集团股份有限公司 | Light guide plate positioning structure, backlight module, and display apparatus |
| KR20180110128A (en) * | 2017-02-09 | 2018-10-08 | 보에 테크놀로지 그룹 컴퍼니 리미티드 | A light guide plate positioning structure, a backlight module and a display device |
| AU2017398581B2 (en) * | 2017-02-09 | 2019-09-12 | Boe Technology Group Co., Ltd. | Light guide plate positioning structure, backlight module, and display apparatus |
| US10718893B2 (en) | 2017-02-09 | 2020-07-21 | Boe Technology Group Co., Ltd. | Light guide plate (LGP) positioning structure, backlight module and display device |
| EP3581994A4 (en) * | 2017-02-09 | 2020-12-16 | Boe Technology Group Co. Ltd. | POSITIONING STRUCTURE FOR LIGHT GUIDE PLATE, BACKLIGHTING MODULE AND DISPLAY DEVICE |
| KR102207056B1 (en) * | 2017-02-09 | 2021-01-25 | 보에 테크놀로지 그룹 컴퍼니 리미티드 | Light guide plate positioning structure, backlight module and display device |
| CN109539186A (en) * | 2018-12-29 | 2019-03-29 | 深圳市晨北科技有限公司 | Backing structure |
| CN114815298A (en) * | 2022-04-28 | 2022-07-29 | 浙江大学 | Waveguide type high-uniformity directional backlight system for naked eye three-dimensional display |
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Application publication date: 20130227 |