CN103454713A - Light guide plate, backlight module and liquid crystal display device - Google Patents
Light guide plate, backlight module and liquid crystal display device Download PDFInfo
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- CN103454713A CN103454713A CN 201210176215 CN201210176215A CN103454713A CN 103454713 A CN103454713 A CN 103454713A CN 201210176215 CN201210176215 CN 201210176215 CN 201210176215 A CN201210176215 A CN 201210176215A CN 103454713 A CN103454713 A CN 103454713A
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- guide plate
- light guide
- diffusion structure
- light
- diffusion
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Abstract
The invention relates to a light guide plate, a backlight module with the light guide plate, and a liquid crystal display device with the backlight module. The light guide plate comprises a light-entering face, a light-emitting face, a bottom face, and a plurality of hollow diffusion structures disposed inside the guide plate. The bottom face is opposite to the light-emitting face. The light-entering face intersects with the light-emitting face and the bottom face.
Description
Technical field
The present invention relates to a kind of light guide plate, backlight module and liquid crystal indicator.
Background technology
Liquid crystal indicator generally includes a display panels and and provides the backlight module of planar light to display panels.Wherein, light guide plate is the critical elements in backlight module, for the homogenizer diffusion that will send from light source, penetrates, and to reach, makes the uniform purpose of liquid crystal indicator brightness.At present, traditional light guide plate is the surface printing dot light guide plate or forms the light guide plate of microstructure form with ejection formation on the light guide plate surface.Yet, printing net-point or microstructure are arranged on the surface of light guide plate usually, easily wear and tear and come off, cause the light-emitting uniformity of light guide plate to reduce, and then the light-emitting uniformity of the backlight module of this light guide plate is used in impact, further, the display effect of the liquid crystal indicator of this light guide plate is used in impact.
Summary of the invention
Cause the poor technical matters of light guide plate light-emitting uniformity for solution prior art light guide plate surface micro-structure easily comes off, the light guide plate that provides a kind of light-emitting uniformity good is provided.
Be necessary to provide a kind of backlight module that adopts this light guide plate.
Also be necessary to provide a kind of liquid crystal indicator that adopts this light guide plate.
A kind of light guide plate, a plurality of diffusion structures that it comprises incidence surface, exiting surface, bottom surface and is arranged at this light guide plate inside, this bottom surface and this exiting surface are oppositely arranged, and this incidence surface and this bottom surface, this exiting surface intersect, and this diffusion structure is hollow-core construction.
A kind of backlight module, it comprises a light source and a light guide plate, this light guide plate receives the light beam that this light source sends and makes its diffusion evenly, this light guide plate comprises incidence surface, exiting surface, bottom surface and is arranged at a plurality of diffusion structures of this light guide plate inside, this bottom surface and this exiting surface are oppositely arranged, this incidence surface and this bottom surface, this exiting surface intersect, and this diffusion structure is hollow-core construction.
A kind of liquid crystal indicator, it comprises a display panels and a backlight module, this backlight module provides planar light for this display panels, this backlight module comprises a light source and a leaded light plate, this light guide plate receives the light beam that this light source sends and makes its diffusion evenly, this light guide plate comprises incidence surface, exiting surface, bottom surface and is arranged at a plurality of diffusion structures of this light guide plate inside, this bottom surface and this exiting surface are oppositely arranged, this incidence surface and this bottom surface, this exiting surface intersect, and this diffusion structure is hollow-core construction.
Compared to prior art, because light guide plate contains the diffusion structure of a plurality of hollow-core constructions, this diffusion structure is not easy wearing and tearing and comes off, and, because this diffusion structure is hollow, makes the transmittance of this light guide plate higher, and the light utilization efficiency of this light guide plate is higher.Therefore, the diffusivity of this light guide plate is good, and light mixing effect is good, and light utilization efficiency is high, and light is better in the homogeneity of exiting surface, and brightness is higher.And then use the backlight module homogeneity of this light guide plate better, brightness is higher.When liquid crystal indicator adopts this backlight module, the light of injecting this display panels due to this backlight module certainly is more even, and brightness is improved, and then the picture taste of this liquid crystal indicator while showing image better.
The accompanying drawing explanation
Fig. 1 is the perspective exploded view of liquid crystal indicator one better embodiment of the present invention.
Fig. 2 is light guide plate the first embodiment vertical view of the present invention.
Fig. 3 is the sectional view of light guide plate the first embodiment of the present invention along the III-III direction.
Fig. 4 is light guide plate the second embodiment sectional view of the present invention.
Fig. 5 is light guide plate of the present invention the 3rd embodiment sectional view.
Fig. 6 is light guide plate of the present invention the 4th embodiment sectional view.
Fig. 7 is light guide plate of the present invention the 5th embodiment sectional view.
The main element symbol description
Incidence surface 211,311,411,511,611
Bottom surface 212,612
Exiting surface 213,313,413,513,613
Diffusion structure 214,314,414,514,614
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Please refer to Fig. 1, is the perspective exploded view of liquid crystal indicator one better embodiment of the present invention.Liquid crystal indicator 1 comprises display panels 10 and the backlight module 20 be oppositely arranged with this display panels 10, and backlight module 20 provides planar light for display panels 10.This backlight module 20 is the side-light backlight module.
This light guide plate 21 has incidence surface 211, bottom surface 212, exiting surface 213 and is arranged at a plurality of diffusion structures 214 of these light guide plate 21 inside, wherein, contiguous this light source 24 of this incidence surface 211 arranges, this bottom surface 212 is oppositely arranged with this exiting surface 213, and this incidence surface 211 intersects with this bottom surface 212, this exiting surface 213.This diffusion structure 214 is hollow-core construction.This diffusion structure 214 is that spherical, ellipsoid or cone etc. can be to the structures of light diffusion.In this diffusion structure 214 hollow, be filled with into air or neon or this diffusion structure 214 hollow for vacuum.This diffusion structure 214 is of a size of 5 μ m and～1000 μ m, is preferably 10 μ m～30 μ m.The plurality of diffusion structure 214 is layered distribution in this light guide plate 21, is positioned at the geometric center of this diffusion structure 214 of same layer on the same plane parallel with the bottom surface 212 of this light guide plate 21.The number of plies of this diffusion structure 214 in this light guide plate 21 is at least one deck.
22 pairs of this reflector plates should light guide plate 21 this bottom surface 212 arrange, with the light reflection these bottom surface 212 outgoing of this light guide plate 21 certainly, return in this light guide plate 21.Contiguous this incidence surface 211 of this light source 24 arranges, and this light source 24 is from this incidence surface 211 to these light guide plate 21 incident raies, and wherein, this light source 24 is pointolite.The light beam that these light guide plate 21 these light sources 24 of reception send also makes its diffusion evenly.
This optical diaphragm group 25 comprises at least one blooming piece, and this at least one blooming piece can be diffusion sheet, brightening piece or diffusion sheet and brightening piece through the blooming piece after integrated and other functional form blooming pieces that can be improved emergent ray of superposeing.Contiguous this exiting surface 213 of this optical diaphragm group 25 arranges, for after the optical processing such as the light to these exiting surface 213 outgoing is certainly spread, adds lustre to, offering this display panels 10.
See also Fig. 2 and Fig. 3, Fig. 2 is light guide plate the first embodiment vertical view of the present invention, and Fig. 3 is the sectional view of light guide plate the first embodiment of the present invention along the III-III direction.In the present embodiment, take that being shaped as of this diffusion structure 214 is spherical to be described as example.Every layer of diffusion structure 214 is array-like and is uniformly distributed on same plane, and diffusion structure 214 numbers of each layer are identical, and upper and lower corresponding the setting, every layer of diffusion structure 214 measure-alike.When the light of these light source 24 (not shown) outgoing certainly through this incidence surface 211 enter this light guide plate 21 interior after, be incident upon on this diffusion structure 214, light again by these exiting surface 213 outgoing, changes the travel path of light after the refraction of this diffusion structure 214.
Referring to Fig. 4, is light guide plate the second embodiment sectional view of the present invention.The structure of the light guide plate 21 in present embodiment in light guide plate 31 and the first embodiment is similar, and its difference is: along with the increase of the distance of the incidence surface 311 that enters light guide plate 31 apart from this, the diameter that is positioned at the diffusion structure 314 of same layer increases gradually.The size of this diffusion structure 314 is set to more larger away from incidence surface 311, can increase the reflection of light away from these incidence surface 311 places, improves the homogeneity at exiting surface 313 of light.
Referring to Fig. 5, is light guide plate of the present invention the 3rd embodiment sectional view.In present embodiment in light guide plate 41 and the first embodiment the structure of light guide plate 21 similar, its difference is: along with the increase of the distance of the incidence surface 411 that enters light guide plate 41 apart from this, the spacing between the diffusion structure 414 of same layer reduces gradually.Because the spacing of this diffusion structure 414 is less in the spacing away between this this diffusion structure of incidence surface 411 places, can, in the reflection that increases light away from these incidence surface 411 places, improve the homogeneity of light at exiting surface 413.
Referring to Fig. 6, is light guide plate of the present invention the 4th embodiment sectional view.In present embodiment in light guide plate 51 and the first embodiment the difference of light guide plate 21 be: when the number of plies of the plurality of diffusion structure 514 is more than or equal to two, the number difference of the diffusion structure 514 of every layer, and, along with the increase of the distance of the bottom surface 512 apart from this light guide plate 51, the number of every layer of diffusion structure 514 reduces gradually.In the plane of parallel and this incidence surface 511, this diffusion structure 514 is layered distribution, be positioned at the geometric center of diffusion structure 514 of same layer on the same plane parallel with the incidence surface 511 of this light guide plate 51, along with the increase of the distance of the incidence surface 511 apart from this light guide plate 51, the number of every layer of this diffusion structure 514 increases gradually.Preferably, the pattern that the plurality of diffusion structure 514 is wedge shape at the interior formation of this light guide plate 21 interface.Can, in the reflection that increases light away from these incidence surface 511 places of this light guide plate 51, improve the homogeneity of light at exiting surface 513.
Referring to Fig. 7, is light guide plate of the present invention the 5th embodiment sectional view.In present embodiment, the vertical view of light guide plate 61 is identical with the vertical view of light guide plate 21 in the first embodiment.In the present embodiment, a plurality of these diffusion structures 614 are arranged in a plurality of arc queues that are parallel to each other, and an end of this exiting surface 613 of each this light guide plate 61 of arc queue vicinity arrives this bottom surface 612 away from this light guide plate 61, the center of circle apart from large and this arc queue of this incidence surface 611 to the distance of this incidence surface 611 than an end of this bottom surface 612 of close this light guide plate 61 of corresponding arc queue.The radian of this arc can adjust to reach the reflection that increases light as required, improves the homogeneity of light at exiting surface 613.
Compared to prior art, because light guide plate contains the diffusion structure of a plurality of hollow-core constructions, this diffusion structure is not easy wearing and tearing and comes off, and because this diffusion structure is hollow, the light loss that enters this diffusion structure is less, make the transmittance of this light guide plate higher, the light utilization efficiency of this light guide plate is higher.Therefore, the diffusivity of this light guide plate is good, and light mixing effect is good, and light utilization efficiency is high, and light is better in the homogeneity of exiting surface, and brightness is higher.And then use the backlight module homogeneity of this light guide plate better, brightness is higher.When liquid crystal indicator adopts this backlight module, the light of injecting this display panels due to this backlight module certainly is more even, and brightness is improved, and then the picture taste of this liquid crystal indicator while showing image better.
Above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (15)
1. a light guide plate, a plurality of diffusion structures that it comprises incidence surface, exiting surface, bottom surface and is arranged at this light guide plate inside, this bottom surface and this exiting surface are oppositely arranged, and this incidence surface and this bottom surface, this exiting surface intersect, it is characterized in that, this diffusion structure is hollow-core construction.
2. light guide plate as claimed in claim 1, is characterized in that, the shape of each diffusion structure is identical, and this is shaped as one of spherical, ellipsoid shape and cone.
3. light guide plate as claimed in claim 1, is characterized in that, is filled with air or neon gas in each diffusion structure hollow or is vacuum.
4. light guide plate as claimed in claim 1, is characterized in that, the plurality of diffusion structure is layered distribution in this light guide plate, is positioned at the geometric center of diffusion structure of same layer on the same plane paralleled with bottom surface of light guide plate.
5. light guide plate as claimed in claim 4, is characterized in that, when the number of plies of the plurality of diffusion structure is more than or equal to two, along with the increase of the distance of distance bottom surface, the number of every layer of diffusion structure reduces gradually.
6. light guide plate as claimed in claim 5, it is characterized in that, in the plane of parallel and this incidence surface, this diffusion structure is by being layered distribution, be positioned at the geometric center of diffusion structure of same layer on the same plane parallel with the incidence surface of this light guide plate, along with the increase of the distance of distance incidence surface, the number of every layer of diffusion structure increases gradually.
7. light guide plate as claimed in claim 6, is characterized in that, the plurality of diffusion structure pattern that Formation cross-section is wedge shape in this light guide plate.
8. light guide plate as claimed in claim 4, is characterized in that, along with the increase of the distance of distance incidence surface, the size that is positioned at the diffusion structure of same layer increases gradually.
9. light guide plate as claimed in claim 4, is characterized in that, along with the increase of the distance of distance incidence surface, the spacing between the diffusion structure of same layer reduces gradually.
10. light guide plate as claimed in claim 4, is characterized in that, every layer of diffusion structure number is identical, and upper and lower corresponding the setting.
11. light guide plate as claimed in claim 4, is characterized in that, same layer diffusion structure measure-alike.
12. light guide plate as claimed in claim 1, it is characterized in that, be distributed in the interior the plurality of diffusion structure of this light guide plate and be arranged in a plurality of arc queues that are parallel to each other, an end of each this exiting surface of arc queue vicinity arrives this bottom surface away from this light guide plate, the center of circle apart from large and this corresponding arc queue of this incidence surface to the distance of this incidence surface than an end of contiguous this bottom surface of corresponding arc queue.
13. light guide plate as claimed in claim 1, is characterized in that, each diffusion structure is of a size of 5～1000 μ m.
14. a backlight module, it comprises a light source and a light guide plate, and this light guide plate receives the light beam that this light source sends and makes its diffusion evenly, it is characterized in that, this light guide plate is the described light guide plate of claim 1 to 13 any one.
A 15. liquid crystal indicator, it comprises a display panels and a backlight module, this backlight module provides planar light for this display panels, this backlight module comprises a light source and a light guide plate, this light guide plate receives the light beam that this light source sends and makes its diffusion evenly, and it is characterized in that: this light guide plate is the described light guide plate of claim 1 to 13 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210176215 CN103454713A (en) | 2012-05-31 | 2012-05-31 | Light guide plate, backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210176215 CN103454713A (en) | 2012-05-31 | 2012-05-31 | Light guide plate, backlight module and liquid crystal display device |
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| Publication Number | Publication Date |
|---|---|
| CN103454713A true CN103454713A (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210176215 Pending CN103454713A (en) | 2012-05-31 | 2012-05-31 | Light guide plate, backlight module and liquid crystal display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019218819A1 (en) * | 2018-05-16 | 2019-11-21 | 京东方科技集团股份有限公司 | Light source apparatus, backlight module and liquid crystal display apparatus |
| WO2022100440A1 (en) * | 2020-11-10 | 2022-05-19 | 苏州欧普照明有限公司 | Optical device and illumination lamp |
-
2012
- 2012-05-31 CN CN 201210176215 patent/CN103454713A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019218819A1 (en) * | 2018-05-16 | 2019-11-21 | 京东方科技集团股份有限公司 | Light source apparatus, backlight module and liquid crystal display apparatus |
| US11106084B2 (en) | 2018-05-16 | 2021-08-31 | Hefei Xinsheng Optoelectronics Technology Co., Ltd. | Light source device, backlight module and liquid crystal display device |
| WO2022100440A1 (en) * | 2020-11-10 | 2022-05-19 | 苏州欧普照明有限公司 | Optical device and illumination lamp |
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Application publication date: 20131218 |