CN204667011U - A kind of light guide plate of uniform in light emission - Google Patents
A kind of light guide plate of uniform in light emission Download PDFInfo
- Publication number
- CN204667011U CN204667011U CN201520292784.XU CN201520292784U CN204667011U CN 204667011 U CN204667011 U CN 204667011U CN 201520292784 U CN201520292784 U CN 201520292784U CN 204667011 U CN204667011 U CN 204667011U
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- light
- guide
- lighting block
- guide plate
- light guiding
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Abstract
The utility model discloses a kind of light guide plate of uniform in light emission, comprise an incidence surface, two relative bottom surfaces and an exiting surface, this incidence surface is provided with multiple vee-cut, this bottom surface has the array of V-shaped column and uneven distribution in multiple scattering particles of this bottom surface, described exiting surface is provided with the guide-lighting block of multiple polygon, the light guiding surface of this guide-lighting block is smooth surface, and the base of light guiding surface is the arcuation form of multi-line section composition, diffusion effect is to a certain degree had after this guide-lighting block with arcuate structure can make incident light deviation, therefore bright spot can be spread, it is made to debate knowledge, great help is had for lifting visual effect, can not need arrange in pairs or groups diffuser plate or only need the diffuser plate that collocation mist degree is lower, make the integral brightness of backlight module promote further simultaneously.
Description
Technical field
The utility model relates to blooming piece art, refers in particular to a kind of for the light guide plate in LCD TV, computer monitor and LCDs.
Background technology
Even to this day, had various types of thin plate display device, wherein main flow is exactly liquid crystal display.Liquid crystal display is applied to the various device such as display, guider, camera, removable computer, game machine comprising thin plate wall-hanging TV, notebook computer, desk-top computer.Because the liquid crystal of liquid crystal display can not be independently luminous, in order to show information on a liquid crystal display, need a kind of distinct faces light-emitting device being called backlight module, for from back side illuminaton liquid crystal display.
Traditional backlight module comprises light source 2, light guide plate, diffusion sheet, prism and screening glass.For its light source 2, usually use such as cold-cathode fluorescence lamp CCFL or LED.Light guide plate is used for the homogenizer from light source 2 to boot up.Diffusion sheet scattered light, to realize uniform luminance.Prism vertical and flatly refract light collect light, thus improve brightness.Screening glass prevents external substance from entering the groove of prism and preventing its surface of scratch.
In recent years because LED technology has more environmental protection and energy saving, more long-life advantage compared to traditional cold-cathode fluorescence lamp CCFL, therefore apply more and more extensive in backlight module.But due to LED size less, its luminescence is too concentrated, too concentrated after the light therefore sent at LED enters to inject light guide plate, although through light guide plate scattering, still easily produces the problem such as bright dark space or Eight characters bright line.
On light guide plate incidence surface, form various smooth incidence structure to increase the design of emergent light homogeneity though have in prior art, effect is not all very desirable.Therefore, provide a kind of there is the light guide plate of improvement light incidence structure thus increase light guide plate light-emitting uniformity in fact for necessary.
Utility model content
In view of this, the utility model is for the disappearance of prior art existence, and its fundamental purpose is to provide a kind of light guide plate of uniform in light emission, and it can improve light incidence structure can improve optical uniformity.
For achieving the above object, the utility model adopts following technical scheme:
A kind of light guide plate of uniform in light emission, comprise an incidence surface, two relative bottom surfaces and an exiting surface, this incidence surface is provided with multiple vee-cut, this bottom surface has the array of V-shaped column and uneven distribution in multiple scattering particles of this bottom surface, described exiting surface is provided with the guide-lighting block of multiple polygon, and the light guiding surface of this guide-lighting block is smooth surface, and the base of light guiding surface is the arcuation form of multi-line section composition.
As a kind of preferred version, the described light guiding surface of guide-lighting block and the angle of exiting surface are 0 ° ~ 90 °.
As a kind of preferred version, the arc angle on the light guiding surface base of described guide-lighting block is 0 ° ~ 180 °.
As a kind of preferred version, described guide-lighting block has 4 kinds, the arc angle on the light guiding surface base of the first guide-lighting block is 0 °, the arc angle on the light guiding surface base of the guide-lighting block of the second is 60 °, the arc angle on the light guiding surface base of the third guide-lighting block is 120 °, the arc angle on the light guiding surface base of the 4th guide-lighting block is 180 °, and these 4 kinds of guide-lighting blocks are distributed on exiting surface.
The utility model compared with prior art has obvious advantage and beneficial effect, specifically, as shown from the above technical solution, due to the guide-lighting block with arcuate structure can make incident light deviation after have diffusion effect to a certain degree, therefore bright spot can be spread, make it debate knowledge, have great help for lifting visual effect, can not need arrange in pairs or groups diffuser plate or only need the diffuser plate that collocation mist degree is lower, make the integral brightness of backlight module promote further simultaneously.
For more clearly setting forth architectural feature of the present utility model and effect, below in conjunction with accompanying drawing and specific embodiment, the utility model is described in detail.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the light guide plate exiting surface of the embodiment of the utility model;
Fig. 2 is the schematic diagram of the bottom surface of light guide plate of the embodiment of the utility model;
Fig. 3 is the schematic diagram of the first guide-lighting block of light guide plate of the embodiment of the utility model;
Fig. 4 is the schematic diagram of the guide-lighting block of light guide plate the second of the embodiment of the utility model;
Fig. 5 is the schematic diagram of the third guide-lighting block of light guide plate of the embodiment of the utility model;
Fig. 6 is the schematic diagram of light guide plate the 4th kind of guide-lighting block of the embodiment of the utility model.
Accompanying drawing identifier declaration:
1, light guide plate 2, light source
10, incidence surface 11, vee-cut
20, bottom surface 21, V-arrangement column
22, scattering particle 30, exiting surface
31, guide-lighting block 32, light guiding surface
33, base 40, side.
Embodiment
Please refer to shown in Fig. 1 and Fig. 2, that show the concrete structure of the preferred embodiment of the utility model, it is a kind of light guide plate 1 of uniform in light emission, this light guide plate 1 is made up of a kind of light-permeable material, it is applied to and is provided with in the backlight module of light-emitting component as light source 2, its structure comprises relative bottom surface 20 and the exiting surface 30 of an incidence surface 10, two.
Wherein, see Fig. 1 and Fig. 2, incidence surface 10 is provided with multiple vee-cut 11.Vee-cut 11 on incidence surface 10 is through bottom surface 20 and exiting surface 30 from top to bottom, certainly also with the two sides 40 of the through light guide plate 1 of mode from front to back.In the present embodiment, the size of described vee-cut 11 can be identical, and the angle between the two sides 40 of each vee-cut 11 can be identical.When light guide plate 1 is applied to side injection type backlight module, light source 2 provides light to the incidence surface 10 of light guide plate 1, and can make divergence of beam by vee-cut 11 structure, thus makes to have preferably uniformity coefficient from the area source of exiting surface 30 outgoing.
In addition, see Fig. 2, described bottom surface 20 has the array of V-shaped column 21 and uneven distribution in multiple scattering particles 22 of this bottom surface 20.In the present embodiment, the array of V-arrangement column 21 is all with the two sides 40 of the through light guide plate 1 of mode from front to back.Wherein, the vertex distance of adjacent two V-arrangement columns 21 is between 10 ~ 100 microns, and the height of V-arrangement column 21 is also between 10 ~ 100 microns.But vertex distance and the apex height of adjacent V-arrangement column 21 can be non-definite value, it can with the mechanical periodicity of certain value progressively increasing or decreasing.Certainly the shape of this array is not limited to V-arrangement column 21, is also prism, convex lens, lens pillar, concavees lens, Fresnel Lenses or its combination.
The material of multiple scattering particle 22 differs from light guide plate 1, and uneven distribution is in bottom surface 20.The light sent when light source 2 is entered by incidence surface 10, and during directive bottom surface 20, these scattering particles 22 are by light reflection, because the refraction coefficient of scattering particle 22 is different from the refraction coefficient of light guide plate 1 body, the phenomenon of light refraction can be produced, to change path, and then destroy total reflection.And when light is incident upon scattering particle 22, then produce light scattering effect, also can cause the improvement of opticpath and destroy total reflection, being conducive to by the irradiant homogenising of light guide plate 1.
See Fig. 1, Fig. 4 to Fig. 6, described exiting surface 30 is provided with the guide-lighting block 31 of multiple polygon, and the light guiding surface 32 of this guide-lighting block 31 is smooth surface, and the arcuation form of base 33 composition in multi-line section of light guiding surface 32.The light guiding surface 32 of this guide-lighting block 31 is 0 ° ~ 90 ° with the angle of exiting surface 30, and the arc angle on the base 33 of the light guiding surface 32 of guide-lighting block 31 is 0 ° ~ 180 °.In the present embodiment, described guide-lighting block 31 has 4 kinds, the arc angle on the base 33 of the light guiding surface of the first guide-lighting block (see figure 3) is 0 °, the arc angle on the base 33 of the light guiding surface of the guide-lighting block (see figure 4) of the second is 60 °, the arc angle of the light guiding surface base 33-3 of the third guide-lighting block (see figure 4) is 120 °, the arc angle of the light guiding surface base 33-4 of the 4th guide-lighting block 31-4 is 180 °, and these 4 kinds guide-lighting blocks 31 are distributed on exiting surface 30.When light is incident to this guide-lighting block 31, by making the light after deviation, there is diffusion effect to a certain degree, this is because utilize the arcuate structure of arc angle to design, can control by the diffusion of the light of arcuate structure deviation, thus reach effect of the lighting angle scope of appropriateness expansion light guide plate 1, that is the design with the guide-lighting block 31 of arcuate structure is utilized, make to be spread within the scope of certain angle by the light of deviation, light guide plate 1 luminescence distribution can be made thus comparatively to spread, and owing to utilizing prismatic lens by photoconduction just to light-emitting area vertical direction, only need use the lower diffuser plate of mist degree or do not need to use diffuser plate, briliancy is showed just can higher than the light guide structure of conventional light guiding plate 1.
In sum, design focal point of the present utility model is, due to the guide-lighting block 31 with arcuate structure can make incident light deviation after have diffusion effect to a certain degree, therefore bright spot can be spread, it is made to debate knowledge, there is great help for lifting visual effect, can not need arrange in pairs or groups diffuser plate or only need the diffuser plate that collocation mist degree is lower, make the integral brightness of backlight module promote further simultaneously.
The above, it is only preferred embodiment of the present utility model, not technical scope of the present utility model is imposed any restrictions, therefore every above embodiment is done according to technical spirit of the present utility model any trickle amendment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (4)
1. the light guide plate of a uniform in light emission, it is characterized in that: comprise an incidence surface, two relative bottom surfaces and an exiting surface, this incidence surface is provided with multiple vee-cut, this bottom surface has the array of V-shaped column and uneven distribution in multiple scattering particles of this bottom surface, described exiting surface is provided with the guide-lighting block of multiple polygon, and the light guiding surface of this guide-lighting block is smooth surface, and the base of light guiding surface is the arcuation form of multi-line section composition.
2. the light guide plate of a kind of uniform in light emission according to claim 1, is characterized in that: the described light guiding surface of guide-lighting block and the angle of exiting surface are 0 ° ~ 90 °.
3. the light guide plate of a kind of uniform in light emission according to claim 1, is characterized in that: the arc angle on the light guiding surface base of described guide-lighting block is 0 ° ~ 180 °.
4. the light guide plate of a kind of uniform in light emission according to claim 3, it is characterized in that: described guide-lighting block has 4 kinds, the arc angle on the light guiding surface base of the first guide-lighting block is 0 °, the arc angle on the light guiding surface base of the guide-lighting block of the second is 60 °, the arc angle on the light guiding surface base of the third guide-lighting block is 120 °, the arc angle on the light guiding surface base of the 4th guide-lighting block is 180 °, and these 4 kinds of guide-lighting blocks are distributed on exiting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520292784.XU CN204667011U (en) | 2015-05-08 | 2015-05-08 | A kind of light guide plate of uniform in light emission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520292784.XU CN204667011U (en) | 2015-05-08 | 2015-05-08 | A kind of light guide plate of uniform in light emission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204667011U true CN204667011U (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520292784.XU Expired - Fee Related CN204667011U (en) | 2015-05-08 | 2015-05-08 | A kind of light guide plate of uniform in light emission |
Country Status (1)
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| CN (1) | CN204667011U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562963A (en) * | 2017-12-29 | 2018-09-21 | 重庆市中光电显示技术有限公司 | Light guide plate |
| CN113568088A (en) * | 2021-06-22 | 2021-10-29 | 吴丽莹 | Light guide plate |
-
2015
- 2015-05-08 CN CN201520292784.XU patent/CN204667011U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562963A (en) * | 2017-12-29 | 2018-09-21 | 重庆市中光电显示技术有限公司 | Light guide plate |
| CN113568088A (en) * | 2021-06-22 | 2021-10-29 | 吴丽莹 | Light guide plate |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20190508 |