CN202598384U - Diffusion sheet - Google Patents
Diffusion sheet Download PDFInfo
- Publication number
- CN202598384U CN202598384U CN 201220242520 CN201220242520U CN202598384U CN 202598384 U CN202598384 U CN 202598384U CN 201220242520 CN201220242520 CN 201220242520 CN 201220242520 U CN201220242520 U CN 201220242520U CN 202598384 U CN202598384 U CN 202598384U
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- Prior art keywords
- diffusion sheet
- micro
- diffusion
- structural
- light source
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The utility model provides a diffusion sheet, which mainly comprises a substrate. A plurality of micro structures are arranged at the lower surface of the substrate; each micro structure is an arc structure which is concaved in the lower surface of the substrate; the diffusion sheet is arranged above a light source; a brightness enhancement sheet and an upper diffusion sheet are sequentially arranged above the diffusion sheet, so that the light of the light source is scattered to the brightness enhancement sheet after uniformly scattering by the diffusion sheet, is irradiated to the upper diffusion sheet after refraction, and then is irradiated to a liquid crystal display panel after scattering by the upper diffusion sheet, so that by the micro structure design of the diffusion sheet, a good light diffusion effect can be provided.
Description
Technical field
Relevant a kind of diffusion sheet improvement of the utility model and module backlight thereof are meant a kind of can be applicable in the module backlight especially, and the diffusion sheet of preferable light diffusion effect are provided.
Background technology
In recent years, that LCD (be called for short " LCD ") is being held under the arm is light, thin, short, little, heat and power consumption is low and the advantage of radiationless injury almost, progressively replaces conventional cathode ray tube (CRT) display.
Generally speaking, LCD is to be made up of module backlight and display panels.Because display panels is non-emissive type panel, therefore need module backlight to provide a uniform surface light source to display panels with show image.
In general, uniform surface light source is provided, can uses several pieces diffusion sheets to be able to be diffused as uniform surface light source usually with the point or the line source that will be disposed in the module backlight in order to make module backlight.In addition, significantly reduce the briliancy of area source for fear of using diffusion sheet, also can dispose brightness enhancement film more usually between diffusion sheet, to improve the integral brightness of area source.
The structure of aforementioned diffusion sheet is mostly with acryl, Merlon (PC) or acryl and the cinnamic copolymer sheet-like structures that material was constituted such as (MS), and has certain light transmittance.In order to reach light source diffusion and effect of uniform; Generally can be when it be processed, add pigment and the one-tenth milky shape that makes with the diffusion that helps light source and evenly, even can add many small diffusion particles that are again; It is mainly by the setting of diffusion particle, to reach the purpose of light diffusion.
Only, each diffusion particle is because of when diffusion sheet is processed, with diffusion particle with after base material evenly mixes; Give one-body moldedly, so these diffusion particles are evenly distributed among diffusion sheet, and light source is when emitting beam; Can make that part obtains maximum light sources directly over each light source, and seem comparatively bright, even if had many diffusion particles in this diffusion sheet; But, and make the light diffusion effect at each position of diffusion sheet more consistent because of the situation that is evenly distributed.But be positioned in aforementioned each light source directly over locate, wherein have stronger light position, the light diffusion effect that not relative acquisition is higher, but be fruit of identical light diffusion with other each position.So the brightness that is positioned at the diffusion sheet position of locating directly over each light source too highlights, and makes whole display effect present bright dark inequality.
And other plants the diffusion particle set-up mode and directly utilizes coating method, makes diffusion particle directly coat substrate surface, and forms the diffusion sheet that the surface has diffusion particle; Only, the density of uncontrollable each diffusion particle of this kind coating method makes it arrange poor effect, can't reach the effect of preferable light diffusion and homogenising equally.
So how a kind of simple in structure, diffusion sheet that can reach diffusion of preferable light and uniformization effect is provided, be the problem that solves of the anxious desire of industry at present.
Summary of the invention
The technical problem that the utility model solved promptly can be applicable in the module backlight providing a kind of, and the diffusion sheet of the improvement of preferable light diffusion effect is provided, and is its main purpose.
The technological means that the utility model adopted is: the diffusion sheet of the utility model mainly is provided with a base material; This base material lower surface is provided with plural micro-structural, and each micro-structural is the arc structure body that is recessed in this base material lower surface, and this diffusion sheet is established as for the light source top; This diffusion sheet top then is provided with brightening piece in regular turn and goes up diffusion sheet; The light that makes light source is incident upon diffusion sheet after the refraction after being incident upon brightening piece after the even scattering of diffusion sheet, after last diffusion sheet scattering, be incident upon display panels; Design by the micro-structural of the utility model diffusion sheet can provide preferable light diffusion effect.
Utilize above-mentioned primary structure characteristic, each micro-structural continuity of the utility model is arranged; Perhaps, be provided with spacing between each micro-structural.
The section shape of above-mentioned each micro-structural can be semicircle.
It is prismatic that above-mentioned brightening piece upper surface is provided with evenly distributed continuously strip.
Above-mentioned light source can be cold cathode ray tube or light emitting diode (LED).
The beneficial effect that the utility model produced promptly can be applicable in the module backlight providing a kind of, and the diffusion sheet of preferable light diffusion effect is provided.
Description of drawings
Fig. 1 is the structural representation of diffusion sheet in the utility model.
Fig. 2 is another structural representation of diffusion sheet in the utility model.
Fig. 3 is applied to the structural representation of module backlight for diffusion sheet in the utility model.
The figure number explanation:
Micro-structural 12
Strip prismatic 21
The specific embodiment
Shown in the diffusion sheet structural representation of Fig. 1 the utility model; The diffusion sheet 10 of the utility model mainly is provided with a base material 11 (can be the PET material), and this base material 11 is provided with relative upper and lower surperficial 111,112, and this base material lower surface 112 is provided with plural micro-structural 12; Each micro-structural 12 is for being recessed into the arc structure body in this base material lower surface; Among the embodiment as shown in the figure, each micro-structural 12 continuity is arranged, and the section shape of each micro-structural 12 can be semicircle; In addition, 12 of each micro-structurals also can be provided with spacing, shown in another embodiment of Fig. 2.
Wherein, The diffusion sheet of the utility model can be applicable in the module backlight; Shown in the embodiment of Fig. 3, be applied to down straight aphototropism mode set, it includes at least: above-mentioned diffusion sheet 10, brightening piece 20, last diffusion sheet 30 and light source 40; This diffusion sheet 10 is located at this light source 40 tops, and these diffusion sheet 10 tops then are provided with brightening piece 20 in regular turn and go up diffusion sheet 30.The upper surface of this brightening piece 20 is provided with evenly distributed continuously strip prism 21, and the contiguous diffusion sheet 30 of going up.Light source 40 is cold cathode ray tube or light emitting diode (LED).
The light that makes light source 40 is after being incident upon brightening piece 20 after the diffusion sheet 10 even scatterings; Be incident upon diffusion sheet 30 after the refraction; After last diffusion sheet 30 scatterings, be incident upon display panels (figure does not show); Wherein, the design by the micro-structural 12 of the utility model diffusion sheet can provide preferable light diffusion effect.
Claims (8)
1. a diffusion sheet is characterized in that, this diffusion sheet mainly is provided with a base material, and this base material lower surface is provided with plural micro-structural, and each micro-structural is the arc structure body that is recessed in this base material lower surface.
2. diffusion sheet as claimed in claim 1 is characterized in that, each micro-structural continuity is arranged.
3. diffusion sheet as claimed in claim 1 is characterized in that, is provided with spacing between each micro-structural.
4. like arbitrary described diffusion sheet in the claim 1 to 3, it is characterized in that the section shape of each micro-structural is semicircle.
5. like arbitrary described diffusion sheet in the claim 1 to 3, it is characterized in that this diffusion sheet is located at least one light source top, this diffusion sheet top is provided with brightening piece in regular turn and goes up diffusion sheet.
6. diffusion sheet as claimed in claim 4 is characterized in that, the section shape of each micro-structural is semicircle.
7. diffusion sheet as claimed in claim 5 is characterized in that, it is prismatic that the upper surface of this brightening piece is provided with evenly distributed continuously strip.
8. diffusion sheet as claimed in claim 5 is characterized in that, this light source is cold cathode ray tube or light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220242520 CN202598384U (en) | 2012-05-28 | 2012-05-28 | Diffusion sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220242520 CN202598384U (en) | 2012-05-28 | 2012-05-28 | Diffusion sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202598384U true CN202598384U (en) | 2012-12-12 |
Family
ID=47315917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220242520 Expired - Fee Related CN202598384U (en) | 2012-05-28 | 2012-05-28 | Diffusion sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202598384U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113015934A (en) * | 2019-08-29 | 2021-06-22 | 京东方科技集团股份有限公司 | Polaroid, display panel and display device |
-
2012
- 2012-05-28 CN CN 201220242520 patent/CN202598384U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113015934A (en) * | 2019-08-29 | 2021-06-22 | 京东方科技集团股份有限公司 | Polaroid, display panel and display device |
| CN113015934B (en) * | 2019-08-29 | 2024-01-05 | 京东方科技集团股份有限公司 | Polarizer, display panel and 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20180528 |