CN202018522U - Light guide plate capable of improving light extraction efficiency - Google Patents
Light guide plate capable of improving light extraction efficiency Download PDFInfo
- Publication number
- CN202018522U CN202018522U CN2011200449582U CN201120044958U CN202018522U CN 202018522 U CN202018522 U CN 202018522U CN 2011200449582 U CN2011200449582 U CN 2011200449582U CN 201120044958 U CN201120044958 U CN 201120044958U CN 202018522 U CN202018522 U CN 202018522U
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light guide
- light
- extraction efficiency
- light extraction
- Prior art date
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- Expired - Fee Related
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- 238000000605 extraction Methods 0.000 title claims abstract description 16
- 239000003973 paint Substances 0.000 claims abstract description 20
- 239000003086 colorant Substances 0.000 claims description 4
- 238000005286 illumination Methods 0.000 abstract description 5
- 230000003287 optical effect Effects 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model provides a light guide plate capable of improving light extraction efficiency, which belongs to an optical instrument and relates to backlight or illumination field. With a thinner structure compared with the traditional light guide plate and an auxiliary light-reflecting structure thereof, the light guide plate provided by the utility model comprises a light extraction surface, a back surface opposite to the light extraction surface, and lateral surfaces serving as side entering type light extraction surfaces, wherein a concave groove with the direction same with the lateral surfaces is formed on the back surface of the light guide plate; and reflectorized paint is coated on the entire back surface.
Description
Technical field
The utility model relates to a kind of light guide plate, is a kind of optical equipment of leaded light, can be used for backlight, also can be used for the illumination.
Background technology
Light guide plate is applied to LCD backlight more, also uses it in the ornamental lighting.The back side of existing light guide plate is equipped with the light emission rate that a reflectance coating or catoptron are used for increasing exiting surface.
Above-mentionedly the thickness of whole device can be increased, and cost can be increased by the scheme that increases reflection unit at the light guide plate back side.And for the side entering type structure, the light that light emitting source is sent by light guide plate one side can penetrate and lose in vain from the light guide plate opposite side.
The utility model content
Technical problem to be solved in the utility model is: a kind of light guide plate is provided, and it can improve light extraction efficiency, and has thinner structure with respect to traditional light guide plate and auxiliary reflective structure thereof.
In order to solve above-mentioned technical matters, the utility model proposes a kind of light guide plate that improves light extraction efficiency, comprise exiting surface, with the exiting surface opposing backside surface with as the side of side entering type incidence surface, and
The groove of a depression is arranged on the back side of described light guide plate, and the trend of this groove is consistent with described side;
Integral body scribbles reflectorised paint on the described back side.
Preferably: described groove is positioned at the centre position at the described light guide plate back side.When the light guide plate two sides were provided with light source, this structure can make luminous even.If groove is not located in the middle of the light guide plate back side, the axis is offset to some extent relatively, then more is applicable to asymmetric luminous situation.
Preferably: described reflectorised paint is the milky reflectorised paint.If light guide plate is applied on the decorative light-source, reflectorised paint can also be a color such as silvery white, yellow, pink, so that different illumination and decoration effects to be provided.
Preferably: the V-shaped shape in the cross section of described groove.The near more then light by this V-arrangement reflection of the most advanced and sophisticated distance from bottom exiting surface of this V-arrangement is many more, but the intensity of light guide plate is weakened, middle easily fractureing.
Preferably: the limit of the V-arrangement in described cross section and described side are 45 ° of angles.Under the exiting surface of the light guide plate situation parallel with the back side, incident ray can just in time vertically be penetrated by exiting surface in place, the limit reflection of V-arrangement, has reduced the loss of light in light guide plate, has increased light emission rate.
Preferably: described reflectorised paint is multilayer coated structure.
Preferably: the zones of different at the described back side is coated with the reflectorised paint of different colours.
The beneficial effects of the utility model:
Compared to existing technology, the utility model has directly increased reflective enamelled coating at the back side of light guide plate and has been used for reflective, the reflective membrane that is located at the catheter plate back or the mirror construction of prior art have been substituted, in order to strengthen light emission rate, make light guide plate more practical, also designed a kind of groove structure at the light guide plate back side, the wall of this groove can reflex to exiting surface with the light of side, a part of directive opposite, penetrate by exiting surface, thereby improved the light emission rate of light guide plate.The utility model is the reflective light conducting plate structure of a kind of straight-down negative, it can substitute the structure of existing light guide plate in conjunction with reflectance coating, catoptron fully, and meet or exceed the light emission rate of prior art, compared to existing technology, also has thinner design, therefore simpler structure can be saved cost and be reduced to use the thickness of the lighting device of this light guide plate.
Description of drawings
Fig. 1 is a three-dimensional structure diagram of the present utility model.
Fig. 2 is the cross-sectional structure figure of light guide plate of the present utility model.
Embodiment
The utility model proposes a kind of light guide plate that improves light extraction efficiency, comprise exiting surface, with the exiting surface opposing backside surface with as the side of side entering type incidence surface, and the groove that a depression is arranged on the back side of light guide plate, the trend of this groove is consistent with described side; Go up integral body overleaf and scribble reflectorised paint.
An embodiment of the present utility model as depicted in figs. 1 and 2.This light guide plate 1 is used light guide plate for illumination, also can be characterized in light utilization efficiency height, ultra-thin and simple structure as the light guide plate of backlight.
This light guide plate 1 comprises exiting surface 2, with exiting surface 2 opposing backside surface 3 with as the side 4 of side entering type incidence surface, and the groove 5 that a depression is arranged on the back side 3 of light guide plate, the trend of this groove 5 is consistent with side 4.Integral body scribbles reflectorised paint 7 on 3 overleaf
Groove 5 is positioned at the centre position at the light guide plate back side 3.When light guide plate two sides 4 were provided with light source, this structure can make luminous even.If groove 5 is not located at the centre at the light guide plate back side 3, axis 8 is offset to some extent relatively, then more is applicable to asymmetric luminous situation.Other flexible designs are as designing the deep mixed groove structure in the of many overleaf, also in protection domain of the present utility model.
The V-shaped shape in the cross section of groove 5.The near more then light by this V-arrangement reflection of the most advanced and sophisticated distance from bottom exiting surface of this V-arrangement is many more, but the intensity of light guide plate is weakened, middle easily fractureing.The bottom of V-shaped groove is preferably arc and connects but not the pointed end, V-shaped groove limit and catheter plate back side arc transition.The limit 500 and the side 4 of V-arrangement are 45 ° of angles.Under the parallel situation in the exiting surface 2 of light guide plate and the back side 3, incident ray can just in time vertically be penetrated by exiting surface in place, the limit reflection of V-arrangement, reduce the loss of light in light guide plate, has increased light emission rate.Arrow line is expressed as the route of light 9 among Fig. 2.The embodiment of Fig. 1 and Fig. 2 is the rectangular parallelepiped case for profile, and the contour shape of light guide plate also can be designed to other shapes such as wedge shape as required, can make different change designs according to the application of light guide plate.
Claims (7)
1. light guide plate that improves light extraction efficiency comprises exiting surface, with the exiting surface opposing backside surface with as the side of side entering type incidence surface, it is characterized in that:
The groove of a depression is arranged on the back side of described light guide plate, and the trend of this groove is consistent with described side;
Integral body scribbles reflectorised paint on the described back side.
2. the light guide plate of raising light extraction efficiency according to claim 1 is characterized in that: described groove is positioned at the centre position at the described light guide plate back side.
3. the light guide plate of raising light extraction efficiency according to claim 1 is characterized in that: described reflectorised paint is the milky reflectorised paint.
4. the light guide plate of raising light extraction efficiency according to claim 1 is characterized in that: the V-shaped shape in the cross section of described groove.
5. the light guide plate of raising light extraction efficiency according to claim 4 is characterized in that: the limit of the V-arrangement in described cross section and described side are 45 ° of angles.
6. the light guide plate of raising light extraction efficiency according to claim 1 is characterized in that: described reflectorised paint is multilayer coated structure.
7. the light guide plate of raising light extraction efficiency according to claim 1 is characterized in that: the zones of different at the described back side is coated with the reflectorised paint of different colours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200449582U CN202018522U (en) | 2011-02-23 | 2011-02-23 | Light guide plate capable of improving light extraction efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200449582U CN202018522U (en) | 2011-02-23 | 2011-02-23 | Light guide plate capable of improving light extraction efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202018522U true CN202018522U (en) | 2011-10-26 |
Family
ID=44812191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200449582U Expired - Fee Related CN202018522U (en) | 2011-02-23 | 2011-02-23 | Light guide plate capable of improving light extraction efficiency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202018522U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122012A (en) * | 2011-02-23 | 2011-07-13 | 江苏金来顺光电科技有限公司 | Light guide plate for improving light emitting efficiency |
| CN110007511A (en) * | 2017-12-22 | 2019-07-12 | 夏普株式会社 | Lighting device and image display device |
-
2011
- 2011-02-23 CN CN2011200449582U patent/CN202018522U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122012A (en) * | 2011-02-23 | 2011-07-13 | 江苏金来顺光电科技有限公司 | Light guide plate for improving light emitting efficiency |
| CN110007511A (en) * | 2017-12-22 | 2019-07-12 | 夏普株式会社 | Lighting device and image display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111026 Termination date: 20150223 |
|
| EXPY | Termination of patent right or utility model |