CN2349629Y - Back light source device with arc-shaped diffusion unit - Google Patents
Back light source device with arc-shaped diffusion unit Download PDFInfo
- Publication number
- CN2349629Y CN2349629Y CN 98247976 CN98247976U CN2349629Y CN 2349629 Y CN2349629 Y CN 2349629Y CN 98247976 CN98247976 CN 98247976 CN 98247976 U CN98247976 U CN 98247976U CN 2349629 Y CN2349629 Y CN 2349629Y
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- CN
- China
- Prior art keywords
- diffusion unit
- circular
- tool
- arc
- guide plate
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- 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 - Lifetime
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Abstract
The utility model relates to a back light source device with an arc-shaped diffusion unit, comprising a transparent light-conducting plate whose front side or back side is provided with an arc-shaped diffusion unit with a plurality of centers of circle, a diffusion sheet-shaped element which is arranged above the light-conducting plate, a reflecting sheet-shaped element which is arranged below the light-conducting plate, and a side-direction light source. The dark band and the bright region of the back light source device can be eliminated, and the brightness of the back light area is more uniform, and the brightness is raised.
Description
The utility model relates to a kind of backlight arrangement, refers to the backlight arrangement of the circular-arc diffusion unit of a kind of tool especially.
The utility model is applicable to makes LCD, display screen, lantern slide backlight, advertisement plate, and any equipment that utilizes backlight arrangement.
Needs along with science and technology environment, no matter back lighting device is for LCD, display screen, lantern slide backlight, advertisement plate, and any equipment that utilizes backlight arrangement, must be in a large number demand and being employed at large, be one still more and can improve brightness, can make the even brightness backlight arrangement again simultaneously.
As shown in Figure 1, the light guide plate 1 of known backlit source apparatus, the light guide plate pattern of its guiding side direction light source 11, be most grooves of the parallel distribution that constitutes in the screen painting mode, or raised line, or diffusion unit such as matrix dot, or equidistantly reach parallel most grooves of the degree of depth, in order to diffusion and reflection side to light source.
The shortcoming of known backlight arrangement light guide plate: with regard to mode of printing, the light utilization efficiency of its frontal is low, be because the angle of each diffusion unit can not change, so the light direction after the light diffusion can not be controlled.
In addition, the straight line parallel groove of known backlight arrangement light guide plate can form the uneven phenomenon of light belt, and the light that reflects near the zone of side direction light source 11 center sections is stronger, and part far away more is then weak more.And, equidistantly wait dark groove can't make light equably outgoing in light guide plate.
The rising angle of known backlit source apparatus light guide plate is wayward, the two side areas of diffusion unit 12 particularly, get over the convergence two side areas, it is connected in the imaginary line and the common parallel lines angle of each diffusion unit of side direction light source 11, can't present the perpendicular projection state more, so that make rising angle be difficult to control.
The primary and foremost purpose of the utility model is to provide the backlight arrangement of the circular-arc diffusion unit of a kind of tool, and the light that the side direction light source is reflected on the diffusion sheet becomes more even.
Another purpose of the utility model is to provide the backlight arrangement of the circular-arc diffusion unit of a kind of tool, can avoid backlight to form " clear zone " and " blanking bar ".
A purpose again of the utility model is to provide the backlight arrangement of the circular-arc diffusion unit of a kind of tool, with the simplest design, and the rising angle of control backlight arrangement, and significantly improve its brightness.
For reaching above-mentioned purpose, the backlight arrangement of the circular-arc diffusion unit of tool that the utility model provides comprises: a transparent light guide plate, a diffusion sheet linear element above this light guide plate; One reflector plate linear element below this light guide plate; And a side direction light source, of the present utility model being characterised in that in the front of this transparent light guide plate or the one side at least of reverse side, has the circular arc diffusion unit in most centers of circle.
The circular arc diffusion unit of light guide plate is a protrusion diffusion unit, or a recessed diffusion unit.The wall thickness of light guide plate (meat is thick) can increase along with the distance of distance light source and reduce, to reduce optical energy loss.
The circular arc diffusion unit is to distribute in not equidistant mode.Preferably, this circular arc diffusion unit is with different reflecting surface height, and is far away more and increase gradually with the distance of this side direction light source.The section of this circular arc diffusion unit is a V-arrangement, or circular arc.Diffusion unit can be interspersed on this light guide plate by two groups of above-mentioned diffusion units, is reverse concentric distribution for example, or distributes towards diagonal line.
The projected area of circular arc diffusion unit on this light guide plate can be along with apart from the increase of this side direction light source distance and strengthen.The projected area of circular arc diffusion unit on this light guide plate is along with the width that increases apart from this side direction light source distance is 0.05mm-1mm.
In order further to understand feature of the present utility model and technology contents, see also following detailed description and accompanying drawing about the utility model, however appended graphic only for reference and explanation usefulness, and be not to be used for the utility model is done any restriction.
Fig. 1 is the vertical view of known backlight arrangement;
Fig. 2 to 6 is vertical views of the various different embodiment of backlight arrangement of the circular-arc diffusion unit of the utility model tool;
Fig. 7 to 9 is cross-sectional side synoptic diagram of the various different embodiment of backlight arrangement of the circular-arc diffusion unit of the utility model tool.
Backlight arrangement of the present utility model shown in Fig. 2 to 9, mainly comprises: a transparent light guide plate 2, this light guide plate material can be transparent materials such as plastic cement (acryl, polycarbonate) or glass; One diffusion sheet linear element 3 above light guide plate 2 can add prismatic lens on this light guide plate or the diffusion sheet; One reflector plate linear element 4 below light guide plate 2; And a side direction light source 5, generally speaking this side direction light source 5 is preferably uses linear light source.
The utility model is at the front or the reverse side of transparent light guide plate 2, and the circular arc that has at least one side to have most centers of circle is protruded diffusion unit 21 (as Fig. 7 or 8) or recessed diffusion unit 21 (as Fig. 9).The cross section of diffusion unit 21 can be V-arrangement (as Fig. 7 or 8), or circular arc (as Fig. 9), or other suitable shapes, as hyperbolic curve, ellipse etc., the surface of this circular arc diffusion unit, can be smoothly or coarse, if minute surface, diffusion effect will weaken.
Further, the utility model is most diffusion units 21 of above-mentioned light guide plate 2, with not equidistant mode distribute (with reference to figure 8, space D 1＞D2＞D3) wherein.Preferably, the reflecting surface height that each diffusion unit 21 tool of the utility model are different, far away more and increase this reflecting surface height (as Fig. 7 to 9) gradually with the distance of light source.
Location mode as for the circular arc diffusion unit 21 in most centers of circle, can two groups of above-mentioned diffusion units 21 be interspersed on light guide plate 2 (as Fig. 5, Fig. 6), each circular arc of diffusion unit 21 can reverse concentric distribution (as Fig. 3, be compared to Fig. 2), or can distribute towards diagonal line (as Fig. 4), can be by two groups of diffusion units be interspersed (as Fig. 5, Fig. 6).Be used for the distributing distribution of circular arc diffusion unit 21 in most centers of circle that other are various is as long as the circular arc diffusion unit 21 that includes the most centers of circle of the utility model all belongs to scope of the present utility model in interior creation.
The diffusion unit of light guide plate 2 of the present utility model, modes such as available cutting, discharge, laser-induced thermal etching form.The then available ejection formation of light guide plate 2, hot pressing, crowded type, casting are made.
The projected area of diffusion unit 21 on light guide plate can strengthen along with the increase of distance light source distance, and preferable width W is 0.05mm-1mm.The wall thickness of light guide plate 2 (meat is thick) can increase with the distance of distance light source and reduce, to reduce optical energy loss.
Effect of the present utility model:
1. the utility model can increase the intensity of reflected light of the face of facing, and reduces leakage, and the mean flow rate of back lighting device is increased.
2. the utility model can make the unit normal of each diffusion unit try one's best perpendicular to light source, is convenient to control rising angle, and increases brightness.
3. the utility model can be eliminated the blanking bar and the clear zone of back lighting device, makes the brightness (luminosity) of area backlight more even.
4. the utility model is easy to manufacture, and its manufacture method can variation.
In sum, the utility model is distributed on the light guide plate 2 with the circular arc diffusion unit 21 in most centers of circle, can eliminate the blanking bar and the clear zone of back lighting device, improves brightness, makes the brightness (luminosity) of area backlight more even, meets the requirement of utility model really.
As is well known, those of ordinary skills carry out the variation of some details if use principal character of the present utility model, all must belong to scope of the present utility model and include.
Claims (13)
1. the backlight arrangement of the circular-arc diffusion unit of tool comprises:
One transparent light guide plate;
One diffusion sheet linear element above this light guide plate;
One reflector plate linear element below this light guide plate; And
One side direction light source is characterized in that, in the front of this transparent light guide plate or the one side at least of reverse side, has the circular arc diffusion unit in most centers of circle.
2. the backlight arrangement of the circular-arc diffusion unit of tool as claimed in claim 1 is characterized in that, the circular arc diffusion unit of this transparent light guide plate is a protrusion diffusion unit.
3. the backlight arrangement of the circular-arc diffusion unit of tool as claimed in claim 1 is characterized in that, the circular arc diffusion unit of this transparent light guide plate is a recessed diffusion unit.
4. the backlight arrangement of the circular-arc diffusion unit of tool as claimed in claim 1 is characterized in that, this circular arc diffusion unit is to distribute in not equidistant mode.
5. the backlight arrangement of the circular-arc diffusion unit of tool as claimed in claim 1 is characterized in that, this circular arc diffusion unit is with different reflecting surface height, and is far away more and increase gradually with the distance of this side direction light source.
6. the backlight arrangement of the circular-arc diffusion unit of tool as claimed in claim 1 is characterized in that, this circular arc diffusion unit is to be interspersed on this light guide plate with two groups of above-mentioned diffusion units.
7. the backlight arrangement of the circular-arc diffusion unit of tool as claimed in claim 1 is characterized in that the cross section of this circular arc diffusion unit is a V-arrangement.
8. the backlight arrangement of the circular-arc diffusion unit of tool as claimed in claim 1 is characterized in that the cross section of this circular arc diffusion unit is a circular arc.
9. the backlight arrangement of the circular-arc diffusion unit of tool as claimed in claim 1 is characterized in that, the projected area of this circular arc diffusion unit on this light guide plate can be along with apart from the increase of this side direction light source distance and strengthen.
10. the backlight arrangement of the circular-arc diffusion unit of tool as claimed in claim 1 is characterized in that, the projected area of this circular arc diffusion unit on this light guide plate is along with the width that increases apart from this side direction light source distance is 0.05mm-1mm.
11. the backlight arrangement of the circular-arc diffusion unit of tool as claimed in claim 1 is characterized in that, the wall thickness of this light guide plate can increase with the distance of distance light source and reduce, to reduce optical energy loss.
12. the backlight arrangement of the circular-arc diffusion unit of tool as claimed in claim 1 is characterized in that, each circular arc of this diffusion unit is reverse concentric distribution.
13. the backlight arrangement of the circular-arc diffusion unit of tool as claimed in claim 1 is characterized in that, each circular arc of this diffusion unit is to distribute towards diagonal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98247976 CN2349629Y (en) | 1998-12-10 | 1998-12-10 | Back light source device with arc-shaped diffusion unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98247976 CN2349629Y (en) | 1998-12-10 | 1998-12-10 | Back light source device with arc-shaped diffusion unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2349629Y true CN2349629Y (en) | 1999-11-17 |
Family
ID=33993090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98247976 Expired - Lifetime CN2349629Y (en) | 1998-12-10 | 1998-12-10 | Back light source device with arc-shaped diffusion unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2349629Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392491C (en) * | 2001-07-27 | 2008-06-04 | 株式会社恩普乐 | Surface light source device and light guide plate |
| CN100395630C (en) * | 2003-07-04 | 2008-06-18 | 鸿富锦精密工业（深圳）有限公司 | Surface luminous source apparatus |
| CN100443980C (en) * | 2003-01-03 | 2008-12-17 | 三星电子株式会社 | Light beam guiding method, optical fiber equipment, back light assembly and liquid crystal display device |
| CN101149522B (en) * | 2006-09-18 | 2011-05-25 | 胜华科技股份有限公司 | Backlight module |
| CN101750666B (en) * | 2008-12-05 | 2012-05-30 | 清华大学 | Light guide plate and backlight module using thereof |
| CN103377597A (en) * | 2012-04-11 | 2013-10-30 | 欧司朗股份有限公司 | Panel used for groove-shaped luminous characters, and groove-shaped luminous character with panel |
| CN109448216A (en) * | 2018-10-30 | 2019-03-08 | 杭州晴朗体育设施有限公司 | Intelligent lottery case |
-
1998
- 1998-12-10 CN CN 98247976 patent/CN2349629Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392491C (en) * | 2001-07-27 | 2008-06-04 | 株式会社恩普乐 | Surface light source device and light guide plate |
| CN100392495C (en) * | 2001-07-27 | 2008-06-04 | 株式会社恩普乐 | Surface light source device and light guide plate |
| CN100443980C (en) * | 2003-01-03 | 2008-12-17 | 三星电子株式会社 | Light beam guiding method, optical fiber equipment, back light assembly and liquid crystal display device |
| CN100395630C (en) * | 2003-07-04 | 2008-06-18 | 鸿富锦精密工业（深圳）有限公司 | Surface luminous source apparatus |
| CN101149522B (en) * | 2006-09-18 | 2011-05-25 | 胜华科技股份有限公司 | Backlight module |
| CN101750666B (en) * | 2008-12-05 | 2012-05-30 | 清华大学 | Light guide plate and backlight module using thereof |
| CN103377597A (en) * | 2012-04-11 | 2013-10-30 | 欧司朗股份有限公司 | Panel used for groove-shaped luminous characters, and groove-shaped luminous character with panel |
| CN109448216A (en) * | 2018-10-30 | 2019-03-08 | 杭州晴朗体育设施有限公司 | Intelligent lottery case |
| CN109448216B (en) * | 2018-10-30 | 2021-07-27 | 杭州晴朗体育设施有限公司 | Intelligent lottery ticket box |
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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 | ||
| CX01 | Expiry of patent term |