CN2800298Y - Light guide plate and back light module - Google Patents
Light guide plate and back light module Download PDFInfo
- Publication number
- CN2800298Y CN2800298Y CN 200520059240 CN200520059240U CN2800298Y CN 2800298 Y CN2800298 Y CN 2800298Y CN 200520059240 CN200520059240 CN 200520059240 CN 200520059240 U CN200520059240 U CN 200520059240U CN 2800298 Y CN2800298 Y CN 2800298Y
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- CN
- China
- Prior art keywords
- guide plate
- light guide
- cavity
- incidence surface
- light
- 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 - Lifetime
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- Light Guides In General And Applications Therefor (AREA)
- Planar Illumination Modules (AREA)
Abstract
The utility model discloses a light guiding plate and a backlight module set. The light guiding plate comprises a light-in surface and a light-out surface which is adjacent to the light-in surface, wherein the side of the light guiding plate, which is adjacent to the light-in surface, comprises a cavity, the light guiding plate surrounds the cavity, and the surface which is adjacent to the light-in surface comprises a plurality of prism structures. The homogeneity of incident light can be improved by the light guiding plate and the backlight module set of the utility model.
Description
[technical field]
The utility model relates to a kind of light guide plate and module backlight, particularly a kind of light guide plate and module backlight that is used in liquid crystal indicator.
[background technology]
Module backlight is widely used in display device, as LCD monitor, mobile phone etc., but many display device are non-autoluminescences to be shown, mainly by controlling passing through or the obstructed realization of coming of light that external light source sends, therefore need corresponding backlight module or preceding optical mode group, this module backlight or preceding optical mode group can realize Presentation Function with photoconduction that external light source sent to display panel.
Seeing also Fig. 1, is the synoptic diagram of a kind of prior art module backlight.This module 10 backlight comprises a light guide plate 100 and two light sources 110, and this light guide plate comprises the exiting surface 104 of an incidence surface 102 and adjacent this incidence surface 102, and this exiting surface 104 comprises an effective viewing area 106; This two light source 110 relative these incidence surfaces 102 are provided with, its be light emitting diode (Light Emit Diode, LED).The light that sends from light source 110 enters light guide plate 100 through incidence surface 102, and penetrates from exiting surface 104 through scatter reflections, refraction back in light guide plate 100.But the lighting angle of light emitting diode 110 generally is limited in 90 degree～110 degree, therefore can form a blanking bar zone 108 because incident ray is less in effective viewing area 106 of incidence surface 102 sides, thereby influences the outgoing light homogeneity of light guide plate 100.
[utility model content]
For overcoming the uneven shortcoming of prior art light guide plate light inlet, be necessary to provide a kind of light inlet uniform light guide plate.
For overcoming the uneven shortcoming of prior art light guide plate light inlet, be necessary to provide another kind of light inlet uniform light guide plate.
For overcoming the uneven shortcoming of prior art module light inlet backlight, be necessary to provide a kind of light inlet uniform module backlight.
For overcoming the uneven shortcoming of prior art module light inlet backlight, be necessary to provide another kind of light inlet uniform module backlight.
One better embodiment provides a kind of light guide plate, comprises the exiting surface of an incidence surface and adjacent this incidence surface, and wherein the contiguous incidence surface side of this light guide plate comprises a cavity, and the face that this light guide plate is surrounded cavity and contiguous incidence surface comprises a plurality of prism structures.
Another better embodiment provides a kind of light guide plate, comprises the exiting surface of an incidence surface and adjacent this incidence surface, and wherein the contiguous incidence surface side of this light guide plate comprises a cavity, and this light guide plate is surrounded cavity and have to expand away from the mask of incidence surface and penetrate pattern.
One better embodiment provides a kind of module backlight, comprise a light guide plate and a light source, this light guide plate comprises the exiting surface of an incidence surface and adjacent this incidence surface, this light source this incidence surface relatively is provided with, wherein the contiguous incidence surface side of this light guide plate comprises a cavity, and the face of this light guide plate encirclement cavity and contiguous incidence surface comprises a plurality of prism structures.
Another better embodiment provides a kind of module backlight, comprise a light guide plate and a light source, this light guide plate comprises the exiting surface of an incidence surface and adjacent this incidence surface, this light source this incidence surface relatively is provided with, wherein the contiguous incidence surface side of this light guide plate comprises a cavity, and this light guide plate is surrounded cavity and have to expand away from the mask of incidence surface and penetrate pattern.
Compared with prior art, the utility model is provided with a plurality of prism structures or pattern is penetrated in expansion what light guide plate formed cavity away from incidence surface one side, when the light that enters light guide plate passes through this cavity, be refracted, behind the scatter reflections, evenly penetrate this cavity again, further in light guide plate, propagate, make light inlet even, the blanking bar phenomenon is eliminated, thereby improves the outgoing light homogeneity of light guide plate.
[description of drawings]
Fig. 1 is the synoptic diagram of a kind of prior art module backlight.
Fig. 2 is the synoptic diagram of the utility model module first embodiment backlight.
Fig. 3 is the cavity part enlarged diagram of the utility model module second embodiment backlight.
Fig. 4 is the cavity part enlarged diagram of the utility model module the 3rd embodiment backlight.
Fig. 5 is the synoptic diagram of the utility model module the 4th embodiment backlight.
Fig. 6 is the synoptic diagram of the utility model module the 5th embodiment backlight.
Fig. 7 is the synoptic diagram of the utility model module the 6th embodiment backlight.
[embodiment]
Seeing also Fig. 2, is the synoptic diagram of the utility model module first embodiment backlight.This module 20 backlight comprises a light guide plate 200 and two light sources 210, and this light guide plate 200 comprises the exiting surface 204 of an incidence surface 202 and adjacent this incidence surface 202, and this exiting surface 204 comprises an effective viewing area 206; These two light sources, 210 relative these incidence surfaces 202 are provided with, and it is a light emitting diode.These light guide plate 200 contiguous incidence surfaces 202 places comprise a cavity 208, and this cavity 208 is single continuous cavity, and it connects light guide plate 200, and light guide plate 200 each face that form this cavity 208 are shiny surface.
The light that sends from light source 210 enters light guide plate 200 through incidence surface 202, and part light enters this cavity 208, and within it by the air dielectric scatter reflections, evenly penetrates this cavity 208 again, further propagates in light guide plate 200.Because when light was refracted into light guide plate 200 again by the air dielectric scatter reflections, it was injected angle and has been partial to light guide plate 200 middle parts, can be at formation blanking bar in the effective viewing area 206.
Seeing also Fig. 3, is the synoptic diagram of the utility model module second embodiment backlight.This embodiment and first embodiment are roughly the same, each face of light guide plate (figure does not show) that its difference is to form this cavity 308 is non-shiny surface, and the face of contiguous incidence surface (figure does not show) comprises a plurality of prism structures 320, and this a plurality of prism mechanism 320 is a vee-cut.
Seeing also Fig. 4, is the synoptic diagram of the utility model module the 3rd embodiment backlight.This embodiment and first embodiment are roughly the same, and each face of light guide plate (figure does not show) that its difference is to form this cavity 408 is non-shiny surface, and has expansion to penetrate pattern away from the mask of incidence surface (figure does not show), and it can be formed by a plurality of expansion radions 420.
See also Fig. 5, be the synoptic diagram of the utility model module the 4th embodiment backlight, this embodiment and first embodiment are roughly the same, and its difference is that this cavity 508 is a plurality of interruption cavitys, it is a linear distribution, and does not run through light guide plate (figure does not show).
Seeing also Fig. 6, is the synoptic diagram of the utility model module the 5th embodiment backlight, and this embodiment and first embodiment are roughly the same, and its difference is that this cavity 608 is a plurality of interruption cavitys, and it is an array distribution.
Seeing also Fig. 7, is the synoptic diagram of the utility model module the 6th embodiment backlight.This embodiment and first embodiment are roughly the same, and its difference is the combination of this cavity 708 for single continuous cavity and a plurality of interruption cavitys.
The utility model is provided with prism structure or diffusion patterned at the face of the light guide plate of surrounding cavity according to the different optical demand, when the light that enters light guide plate passes through this cavity, this prism structure or the diffusion patterned incident light that can make are even, eliminate the blanking bar phenomenon, improve the outgoing light homogeneity of module backlight.
It is described that light guide plate of the present utility model and module backlight are not limited to present embodiment, can also adjust according to required visual effect as the prism structure in this cavity to be local distribution; This module backlight also can further comprise reflector plate, prismatic lens etc.
Claims (11)
1. light guide plate comprises the exiting surface of an incidence surface and adjacent this incidence surface, and it is characterized in that: contiguous incidence surface one side of this light guide plate comprises a cavity, and the face that this light guide plate is surrounded cavity and contiguous incidence surface comprises a plurality of prism structures.
2. light guide plate as claimed in claim 1 is characterized in that: these a plurality of prism structures are vee-cut.
3. light guide plate as claimed in claim 1 is characterized in that: this cavity is single continuous cavity.
4. light guide plate as claimed in claim 1 is characterized in that: this cavity is a plurality of interruption cavitys.
5. light guide plate as claimed in claim 4 is characterized in that: this cavity is a linear array.
6. light guide plate as claimed in claim 4 is characterized in that: this cavity is an arrayed.
7. light guide plate as claimed in claim 1 is characterized in that: this cavity is the combination of single continuous cavity and a plurality of interruption cavitys.
8. light guide plate comprises the exiting surface of an incidence surface and adjacent this incidence surface, and it is characterized in that: the contiguous incidence surface side of this light guide plate comprises a cavity, and this light guide plate mask of surrounding cavity and contiguous incidence surface has to expand and penetrates pattern.
9. light guide plate as claimed in claim 8 is characterized in that: it is a plurality of diffusion particles that pattern is penetrated in this expansion.
10. module backlight, comprise a light guide plate and a light source, this light guide plate comprises the exiting surface of an incidence surface and adjacent this incidence surface, this light source this incidence surface relatively is provided with, it is characterized in that: the contiguous incidence surface side of this light guide plate comprises a cavity, and the face of this light guide plate encirclement cavity and contiguous incidence surface comprises a plurality of prism structures.
11. module backlight, comprise a light guide plate and a light source, this light guide plate comprises the exiting surface of an incidence surface and adjacent this incidence surface, this light source this incidence surface relatively is provided with, it is characterized in that: the contiguous incidence surface side of this light guide plate comprises a cavity, and the mask of this light guide plate encirclement cavity and contiguous incidence surface has expansion to penetrate pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520059240 CN2800298Y (en) | 2005-05-28 | 2005-05-28 | Light guide plate and back light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520059240 CN2800298Y (en) | 2005-05-28 | 2005-05-28 | Light guide plate and back light module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2800298Y true CN2800298Y (en) | 2006-07-26 |
Family
ID=36842794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520059240 Expired - Lifetime CN2800298Y (en) | 2005-05-28 | 2005-05-28 | Light guide plate and back light module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2800298Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501045A (en) * | 2014-12-23 | 2015-04-08 | 苏州茂立光电科技有限公司 | Laterally-incoming-type backlight module and light guide plate thereof |
| CN106066554A (en) * | 2016-06-30 | 2016-11-02 | 京东方科技集团股份有限公司 | A kind of backlight module and display device |
-
2005
- 2005-05-28 CN CN 200520059240 patent/CN2800298Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501045A (en) * | 2014-12-23 | 2015-04-08 | 苏州茂立光电科技有限公司 | Laterally-incoming-type backlight module and light guide plate thereof |
| CN106066554A (en) * | 2016-06-30 | 2016-11-02 | 京东方科技集团股份有限公司 | A kind of backlight module and display device |
| CN106066554B (en) * | 2016-06-30 | 2020-04-24 | 京东方科技集团股份有限公司 | Backlight module and display device |
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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 |
Expiration termination date: 20150528 Granted publication date: 20060726 |