CN201029016Y - Two-sided luminous back light source - Google Patents
Two-sided luminous back light source Download PDFInfo
- Publication number
- CN201029016Y CN201029016Y CNU200620159439XU CN200620159439U CN201029016Y CN 201029016 Y CN201029016 Y CN 201029016Y CN U200620159439X U CNU200620159439X U CN U200620159439XU CN 200620159439 U CN200620159439 U CN 200620159439U CN 201029016 Y CN201029016 Y CN 201029016Y
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- Prior art keywords
- guide plate
- light guide
- light
- pit
- double
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Abstract
The utility model discloses a double-faced light emitting backlight source, comprising a LED illuminant, a light guide plate, a rubber frame for fixing the light guide plate, a lower diffusion film and a lower light enhancement film positioned on the lower underside of the light guide plate, and an upper diffusion film and an upper light enhancement film positioned on the upper surface of the light guide plate. The utility model is characterized in that the aforesaid backlight source is a single light guide plate, and the lower surface of the aforesaid light guide plate is a concave pit, or a raised dot shape or a line decorative design; the concave pit or the decorative design are arranged in an array shape according to the rule from big to small. The super surface of the light guide plate is made as a grinding surface, or a mirror face or a discharging face, and the distribution rule of the concave pit or the heave on the surface of the aforesaid light guide plate is: the concave pit or the heave is smaller when approaching the light source, or the distance is bigger, and the concave pit or the heave is farther when closing to the light source, or the distance is smaller. The utility model can overcome the defects of the prior art, so as to improve the efficiency, save the material and energy, which is a double-faced light emitting backlight source with equal light emitting and small size.
Description
Technical field
The utility model relates to a kind of light source, relates to a kind of double-side backlight that ambient light illumination is provided for liquid crystal LCD display etc. specifically.
Background technology
Present existing luminous backlight is always seen the strong or weak shade that reverse side is windowed and caused when providing ambient light illumination for a slice liquid crystal LCD display, because the develop rapidly of current display technique, the double screen technique that secondary screen is opened fenestella has obtained using widely, such as: field of mobile communication, multimedia audio receiver, toy etc. all press for the double-side backlight that power consumption is little, luminous evenly, the little particularly gauge of size is little.
The utility model content
The purpose of this utility model is at the deficiencies in the prior art, and a kind of double-side backlight is provided, and the utility model can overcome the defective of prior art, raise the efficiency, save material, the saving energy is the two-sided backlight that a kind of double-side is even, size is little.
The technical solution of the utility model is as described below: the double-side backlight, comprise the glue frame of LED luminophor, light guide plate, lightguide plate fixing, the following diffusion barrier that is positioned at the light guide plate bottom surface and following bright enhancement film and the last diffusion barrier and the last bright enhancement film that are positioned at the light guide plate upper surface, it is characterized in that, described backlight is single light guide plate, described light guide plate lower surface is the round point shape or the linear decorative pattern of pit or projection, the decorative pattern of pit or projection is regularly arranged into array-like by size, and the upper surface of light guide plate is flour milling, minute surface or discharge face.
The utility model according to said structure, its feature also is, the arranging rule of the pit on described light guide plate surface or projection is: apart near more its pit of light source or projection is just more little or spacing is big more, apart from light source its pit far away more or projection is just big more or spacing is more little.
According to the utility model of said structure, its feature is that also one-sided (or single angle) LED luminophor or both sides (or two angle) its LED quantity of LED luminophor can be that simple grain also can be many.
According to the utility model of said structure, its feature also is, described light guide plate light-conductive rate＞80%, and described single light guide plate is embedded in the high reflectance glue frame.
Described light guide plate is because lower surface all has pit or projection, when light source when the side of light guide plate is injected, pit, the reflection of projection process, refraction by the light guide plate lower surface, make the upper and lower surface of light guide plate all have very strong light to appear, thereby realization lighting at two sides, and open fenestella part because of pit, be raised with tangible increasing, the light of refraction is just many, this has just replenished the light leak of windowing the front being caused, make the front can't see shade, thereby can provide efficient background light source uniformly for two LCD simultaneously.
The following diffusion barrier at described light guide plate lower surface place, because of on it being the pair screen of double-screen LCD, can shield the required background luminance requirement of LCD according to pair, adopt the diffusion barrier of different transmittances, when LCD requires background luminance low, can adopt the low diffusion barrier of transmittance, can adopt the high diffusion barrier of transmittance on the contrary, also can increase one or more layers bright enhancement film with spotlight effect or light enhancing effect on this diffusion barrier improves brightness in addition.
The last diffusion barrier at the upper surface place of described light guide plate because of on it being the main screen of double-screen LCD, because main screen needs brightness higher, can adopt light conductivity diffusion barrier preferably, also can increase by one to two layer of bright enhancement film with spotlight effect and increase brightness.
Compared with prior art, the beneficial effects of the utility model are:
1, the utility model can two-sided uniformly light-emitting, and the intensity of double-side can ratio on demand be adjusted, this just is that positive and negative liquid crystal LCD shows that the luminosity of (double screen) distributes any selection of ratio work from 1: 1 to 5: 1, ratio commonly used is 3: 1, thereby has widened its usable range greatly;
2, the utility model carries out design and use because two backlights are combined into a backlight, therefore the raw-material consumption of minimizing at double and the consumption of the energy, its slip can reach 50% at most, and this high efficiency energy-conservation backlight can be realized wide brightness range, can be used in monochromatic light, polychromatic light (nearly seven glories), the backlight of full-color screen light;
3, the utility model improvement structurally can make the gauge of ultrathin double screen liquid crystal LCD display reach very little.Its backlight gauge is partly compared with former pair of light guide plate backlight, can reduce 40%～50%, thereby provides more wide space for structural design, the appearance design of double screen liquid crystal LCD display.
Description of drawings
Below in conjunction with the drawings and the specific embodiments the utility model is described in detail.
Accompanying drawing 1 is the utility model front view;
Accompanying drawing 2 is the utility model lateral plan;
Accompanying drawing 3 is the utility model rear view;
Accompanying drawing 4 is an A part zoomed-in view;
Accompanying drawing 5 is the utility model zoomed-in view of band site face.
LED luminophor in the drawings, 1; 2, light guide plate; 3, go up diffusion barrier; 4, go up bright enhancement film; 5, following diffusion barrier; 6, following bright enhancement film; 7, glue frame; 8, site face; 9, reverse side fenestella
Embodiment
Shown in Fig. 1,2,3,4,5, the double-side backlight, comprise the glue frame 7 of LED luminophor 1, light guide plate 2, lightguide plate fixing, the following diffusion barrier 5 that is positioned at light guide plate 2 bottom surfaces and following bright enhancement film 6 and the last diffusion barrier 3 and the last bright enhancement film 4 that are positioned at light guide plate 2 upper surfaces, it is characterized in that: described backlight is single light guide plate, described light guide plate 2 lower surfaces are round point shape or linear decorative patterns of pit or projection, the decorative pattern of pit or projection is regularly arranged into array-like by size, and the upper surface of light guide plate is flour milling, minute surface or discharge face.
According to the utility model of said structure, the arranging rule of the pit on described light guide plate 2 surfaces or projection is: apart near more its pit of light source or projection is just more little or spacing is big more, apart from light source its pit far away more or projection is just big more or spacing is more little.
According to the utility model of said structure, one-sided (or single angle) LED luminophor or both sides (or two angle) its LED quantity of LED luminophor can be that simple grain also can be many.
According to the utility model of said structure, described light guide plate 2 light-conductive rates＞80%, described single light guide plate is embedded in the glue frame 7.
Claims (3)
1. double-side backlight, comprise the glue frame (7) of LED luminophor (1), light guide plate (2), lightguide plate fixing, the following diffusion barrier (5) that is positioned at light guide plate (2) bottom surface and following bright enhancement film (6) and the last diffusion barrier (3) and the last bright enhancement film (4) that are positioned at light guide plate (2) upper surface, it is characterized in that, described backlight is single light guide plate, described light guide plate (2) lower surface is the round point shape or the linear decorative pattern of pit or projection, the decorative pattern of pit or projection is regularly arranged into array-like by size, and the upper surface of light guide plate is flour milling, minute surface or discharge face.
2. double-side backlight according to claim 1, its feature also is, the arranging rule of the pit on described light guide plate (2) surface or projection is: apart near more its pit of light source or projection is just more little or spacing is big more, apart from light source its pit far away more or projection is just big more or spacing is more little.
3. double-side backlight according to claim 1, its feature also are, described light guide plate (2) light-conductive rate＞80%, and described single light guide plate is embedded in the glue frame (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620159439XU CN201029016Y (en) | 2006-11-14 | 2006-11-14 | Two-sided luminous back light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620159439XU CN201029016Y (en) | 2006-11-14 | 2006-11-14 | Two-sided luminous back light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201029016Y true CN201029016Y (en) | 2008-02-27 |
Family
ID=39133232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200620159439XU Expired - Fee Related CN201029016Y (en) | 2006-11-14 | 2006-11-14 | Two-sided luminous back light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201029016Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010034154A1 (en) * | 2008-09-25 | 2010-04-01 | Hong Kong Applied Science And Technology Research Institute Co., Ltd | Light guiding strip and double-sided planar light apparatus |
| CN101725915B (en) * | 2008-10-21 | 2012-03-28 | 鸿富锦精密工业（深圳）有限公司 | Back light module |
| CN102480250A (en) * | 2010-11-24 | 2012-05-30 | 吉富新能源科技(上海)有限公司 | Transparent light-emitting type solar cell for build facade with additional light-emitting model at bottom |
| CN101566289B (en) * | 2008-04-24 | 2014-07-16 | 三星显示有限公司 | Backlight assembly and display device having the same |
| CN104345495A (en) * | 2013-07-31 | 2015-02-11 | 美蓓亚株式会社 | Spread illuminating apparatus and method for manufacturing light guide plate |
| CN107527566A (en) * | 2016-07-26 | 2017-12-29 | 安科瑞电气股份有限公司 | A kind of fire-fighting evacuation indicating lamp |
| CN109324366A (en) * | 2018-10-31 | 2019-02-12 | 熊铭慧 | A kind of double-sided light guide plate and the light emitting device with double-sided light guide plate |
-
2006
- 2006-11-14 CN CNU200620159439XU patent/CN201029016Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566289B (en) * | 2008-04-24 | 2014-07-16 | 三星显示有限公司 | Backlight assembly and display device having the same |
| WO2010034154A1 (en) * | 2008-09-25 | 2010-04-01 | Hong Kong Applied Science And Technology Research Institute Co., Ltd | Light guiding strip and double-sided planar light apparatus |
| CN101542189B (en) * | 2008-09-25 | 2012-03-21 | 香港应用科技研究院有限公司 | Light guide bars and plane lighting device with dual-surface lighting |
| CN101725915B (en) * | 2008-10-21 | 2012-03-28 | 鸿富锦精密工业（深圳）有限公司 | Back light module |
| CN102480250A (en) * | 2010-11-24 | 2012-05-30 | 吉富新能源科技(上海)有限公司 | Transparent light-emitting type solar cell for build facade with additional light-emitting model at bottom |
| CN104345495A (en) * | 2013-07-31 | 2015-02-11 | 美蓓亚株式会社 | Spread illuminating apparatus and method for manufacturing light guide plate |
| CN104345495B (en) * | 2013-07-31 | 2019-03-22 | 美蓓亚株式会社 | The production method of planar illuminating device and light guide plate |
| CN107527566A (en) * | 2016-07-26 | 2017-12-29 | 安科瑞电气股份有限公司 | A kind of fire-fighting evacuation indicating lamp |
| CN109324366A (en) * | 2018-10-31 | 2019-02-12 | 熊铭慧 | A kind of double-sided light guide plate and the light emitting device with double-sided light guide plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 Termination date: 20091214 |