CN202904046U - Optical diffusion barrier - Google Patents
Optical diffusion barrier Download PDFInfo
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- CN202904046U CN202904046U CN 201220517390 CN201220517390U CN202904046U CN 202904046 U CN202904046 U CN 202904046U CN 201220517390 CN201220517390 CN 201220517390 CN 201220517390 U CN201220517390 U CN 201220517390U CN 202904046 U CN202904046 U CN 202904046U
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Abstract
The utility model discloses an optical diffusion barrier, the diffusion barrier is provided with a structure of three to five layers, and comprises a base material, at least one side of the two sides of the base material is provided with two diffusion layers, namely, a first diffusion layer and a second diffusion layer, scattering particles are contained in the first diffusion layer and the second diffusion layer, a particle size of the scattering particles in the first diffusion layer is 1-60 [mu]m, and a particle size of the scattering particles in the second diffusion layer is 0.1-1 [mu]m. The optical diffusion barrier is provided with anti-adhesion performance, better comprehensive performance of light transmittance and haze, and capability of reaching the level of a current product in product performance. A manufacture method for the optical diffusion barrier is simple and practicable, in the preparation technology, post-coating processing is not needed, a complicated process is eliminated, demands of adhesive resin, organic solvent, etc. are eliminated, production cost is reduced, operation is simpler, product performance can be improved, and environment protection is facilitated.
Description
Technical field
The utility model relates to a kind of optical film technology field, is specifically related to a kind of optical diffusion sheet.
Background technology
Optical diffusion membrane is widely used in liquid crystal display, advertising lamp box, lighting etc. to be needed in the device of light source, and particularly in liquid crystal indicator, diffusion barrier is the key components and parts in the backlight module.The Main Function of optical diffusion is to promote light luminance, and with gentle looseization of light that light guide plate is received, for display provides a uniform area source, plays the effect of widening the visual angle.
With regard to liquid crystal display, in whole optics module, need two optical diffusions, be called diffusion barrier and lower diffusion barrier.Wherein descend diffusion barrier near light guide plate, major function is light harvesting, cover light guide plate printing net-point or line source, the fluorescent tube shadow; Upper diffusion barrier has high light penetration capacity, can improve the visual angle, increase the soft property of light source, has the function of diffusion and protection prismatic lens concurrently.It is not high that diffusion barrier is compared to material cost proportion shared other blooming piece (such as prismatic lens), but under the requirement of high brightness specification, the uniformity coefficient of display screen and brightness are affected by the quality of diffusion barrier mainly.
The purpose of diffusion barrier is evenly to convert linear light sorurce or point source of light to area source, and its action principle is to utilize light to pass in having the medium of different refractivity, and light produces the phenomenon of many refractions, reflection, scattering, causes the effect of optics diffusion.
The method for making of diffusion barrier adopts the wet coating mode of scattering particle type more at present, as shown in Figure 1, existing diffusion barrier structure is respectively diffusion layer 2, base material 1 and the anti-stick particle 4 that connects from top to bottom, diffusion layer 2 contains scattering particle 3 (also can be described as the diffusion particulate, or diffusion particle) and binder resin.Wherein base material 1 is generally the transparent optical level polyester film, and scattering particle 3 can be inorganic particulate or polymer particles (or claiming polymer particle).The upper and lower of some diffusion barrier structure all are diffusion layers, also are provided with adhesive linkage below the lower diffusion layer of some diffusion barrier.Diffusion layer 2 is by coating method, with scattering particle and binder resin, is coated on base material 1 surface such as the potpourri of polyacrylic resin (or claim acryl resin), coating through hyperthermia drying remove solvent, sclerosis forms.
Scattering particle type cloth of coating-type diffusion barrier has that transmittance is higher, and the mist degree range of adjustment is large, and the advantage that presentation quality is good is the first-selected kind of diffusion barrier of high-end backlight product.But such diffusion barrier exists the cohesive force of scattering particle and solvent, resin not good owing to being coated with processing mode after adopting, and the distribution of particles uniformity coefficient is difficult to the shortcomings such as control.In addition, used coating contains organic solvent, easily causes the problem of coating inequality because of solvent evaporates degree difference, also exists simultaneously the dry out solvent consumption energy and used time long, and dry run is subject to humiture impact, the problems such as the exhaust-gas treatment of solvent.
The utility model content
The purpose of this utility model is to overcome the defective that exists in the prior art, a kind of optical diffusion sheet and preparation method thereof is provided, diffusion particle and the cohesive force between the resin in the optical diffusion sheet provided by the invention are better, the surface resistance to blocking can be good with optical property, its preparation method comprises that five-layer co-squeezing goes out and stretch processes, and is simple to operate.
For achieving the above object, the technical solution of the utility model is a kind of optical diffusion sheet of design, it is characterized in that, described diffusion barrier is three to five-layer structure, comprises base material, and at least one side is provided with two-layer diffusion layer in the both sides of described base material, i.e. the first diffusion layer and the second diffusion layer, include scattering particle in described the first diffusion layer and the second diffusion layer, the particle diameter of scattering particle is 1 ~ 60 μ m in described the first diffusion layer, and the particle diameter of scattering particle is 0.1 ~ 1 μ m in described the second diffusion layer.
Wherein preferred technical scheme is, a side of described base material is provided with two-layer diffusion layer, and opposite side is provided with anti-adhering layer, and described anti-adhering layer includes the anti-stick particle that connects, and the described anti-stick particle diameter that connects particle is 1 ~ 4 μ m.
Preferred technical scheme also has, the thickness of described optical diffusion is 100 ~ 300 μ m, the thickness of described base material is 66% ~ 78% of diffusion barrier thickness, and the thickness of described the first diffusion layer is 6% ~ 12% of diffusion barrier thickness, and the thickness of described the second diffusion layer is 10% of diffusion barrier thickness.
Preferred technical scheme also has, and described diffusion barrier is the five-layer co-squeezing structure.
Preferred technical scheme also has, and the scattering particle particle diameter in described the first diffusion layer is 2 ~ 40 μ m, and the scattering particle particle diameter in described the second diffusion layer is 0.1 ~ 0.5 μ m.
Further preferred technical scheme also has, and the thickness of described optical diffusion is 150 ~ 250 μ m.
Further preferred technical scheme also has, and the thickness of described optical diffusion is 100 ~ 150 μ m.
Further preferred technical scheme also has, and the thickness of described optical diffusion is 150 ~ 300 μ m.
Advantage of the present utility model and beneficial effect are: this optical diffusion sheet compared with prior art, this optical diffusion sheet, resistance to blocking, the combination property of light transmission rate and mist degree is better, can reach the level of existing product on properties of product.The preparation method of the optical diffusion that the utility model provides is simple; on preparation technology; need not after be coated with processing and process; saved numerous and diverse operation one, the demand of removing binder resin, organic solvent etc. from, not only Decrease production cost; make operation more easy; and can improve the performance of product, as improved the cohesive strength between scattering layer and the basement membrane, and be beneficial to environmental protection.The preparation method of the optical diffusion sheet that the utility model provides just can realize on existing drawn polyester production line.
Description of drawings
Fig. 1 is the structural representation of the diffusion barrier that makes of existing scattering particle type rubbing method;
The structural representation of the optical diffusion that Fig. 2 the utility model provides (single face double diffusion layer);
The structural representation of the optical diffusion that Fig. 3 the utility model provides (two-sided double diffusion layer);
The diagrammatic cross-section of the optical diffusion that Fig. 4 the utility model provides (single face double diffusion layer);
The diagrammatic cross-section of the optical diffusion that Fig. 5 the utility model provides (two-sided double diffusion layer).
Among the figure: 1, base material; 2, the first diffusion layer; 3, the second diffusion layer; 4, scattering particle; 5, anti-stick particle, 6, the anti-adhering layer of connecting.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.
As shown in the figure, the utility model is a kind of optical diffusion sheet, this diffusion barrier is three to five-layer structure, comprise base material 1, at least one side is provided with two-layer diffusion layer in the both sides of described base material 1, and namely the first diffusion layer 2 and the second diffusion layer 3 include scattering particle 4 in described the first diffusion layer 2 and the second diffusion layer 3, the particle diameter of scattering particle 4 is 1 ~ 60 μ m in described the first diffusion layer, and the particle diameter of scattering particle 4 is 0.1 ~ 1 μ m in described the second diffusion layer.
Preferred technical scheme is in the utility model, and a side of described base material 1 is provided with two-layer diffusion layer, and opposite side is provided with anti-adhering layer 6, and described anti-adhering layer 6 includes the anti-stick particle 5 that connects, and the described anti-stick particle diameter that connects particle 5 is 1 ~ 4 μ m.
Preferred embodiment also has in the utility model, the thickness of described optical diffusion is 100 ~ 300 μ m, the thickness of described base material 1 is 66% ~ 78% of diffusion barrier thickness, the thickness of described the first diffusion layer 2 is 6% ~ 12% of diffusion barrier thickness, and the thickness of described the second diffusion layer 3 is 10% of diffusion barrier thickness.
Preferred embodiment also has in the utility model, and described diffusion barrier sheet is the five-layer co-squeezing structure.
Preferred embodiment also has in the utility model, and scattering particle 4 particle diameters in described the first diffusion layer 2 are 2 ~ 40 μ m, and scattering particle 4 particle diameters in described the second diffusion layer 3 are 0.1 ~ 0.5 μ m.
Further preferred embodiment also has in the utility model, and the thickness of described optical diffusion is 150 ~ 250 μ m.
Further preferred embodiment also has in the utility model, and the thickness of described optical diffusion is 100 ~ 150 μ m.
Further preferred embodiment also has in the utility model, and the thickness of described optical diffusion is 150 ~ 300 μ m.
The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. optical diffusion sheet, it is characterized in that, described diffusion barrier is three to five-layer structure, comprise base material, at least one side is provided with two-layer diffusion layer in the both sides of described base material, and namely the first diffusion layer and the second diffusion layer include scattering particle in described the first diffusion layer and the second diffusion layer, the particle diameter of scattering particle is 1 ~ 60 μ m in described the first diffusion layer, and the particle diameter of scattering particle is 0.1 ~ 1 μ m in described the second diffusion layer.
2. optical diffusion sheet as claimed in claim 1 is characterized in that, a side of described base material is provided with two-layer diffusion layer, and opposite side is provided with anti-adhering layer, and described anti-adhering layer includes the anti-stick particle that connects, and the described anti-stick particle diameter that connects particle is 1 ~ 4 μ m.
3. optical diffusion sheet as claimed in claim 1, it is characterized in that, the thickness of described optical diffusion is 100 ~ 300 μ m, the thickness of described base material is 66% ~ 78% of diffusion barrier thickness, the thickness of described the first diffusion layer is 6% ~ 12% of diffusion barrier thickness, and the thickness of described the second diffusion layer is 10% of diffusion barrier thickness.
4. optical diffusion sheet as claimed in claim 1 is characterized in that, described diffusion barrier is the five-layer co-squeezing structure.
5. optical diffusion sheet as claimed in claim 1 is characterized in that, the scattering particle particle diameter in described the first diffusion layer is 2 ~ 40 μ m, and the scattering particle particle diameter in described the second diffusion layer is 0.1 ~ 0.5 μ m.
6. optical diffusion sheet as claimed in claim 3 is characterized in that, the thickness of described optical diffusion is 150 ~ 250 μ m.
7. optical diffusion sheet as claimed in claim 3 is characterized in that, the thickness of described optical diffusion is 100 ~ 150 μ m.
8. optical diffusion sheet as claimed in claim 3 is characterized in that, the thickness of described optical diffusion is 150 ~ 300 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220517390 CN202904046U (en) | 2012-10-10 | 2012-10-10 | Optical diffusion barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220517390 CN202904046U (en) | 2012-10-10 | 2012-10-10 | Optical diffusion barrier |
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| Publication Number | Publication Date |
|---|---|
| CN202904046U true CN202904046U (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220517390 Expired - Lifetime CN202904046U (en) | 2012-10-10 | 2012-10-10 | Optical diffusion barrier |
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| CN (1) | CN202904046U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132600A (en) * | 2017-06-27 | 2017-09-05 | 宁波长阳科技股份有限公司 | A kind of extrusion type diffusion barrier and preparation method thereof |
| CN107561607A (en) * | 2016-07-01 | 2018-01-09 | 惠州市创亿达新材料有限公司 | A kind of optical function plate |
| CN107828072A (en) * | 2017-11-07 | 2018-03-23 | 张永宏 | Diffusion sheet |
| CN108776361A (en) * | 2018-05-02 | 2018-11-09 | 江苏帝摩斯光电科技有限公司 | A kind of integrated diffusion barrier of LCD backlight module |
| CN111175867A (en) * | 2020-01-14 | 2020-05-19 | 深圳睿晟自动化技术有限公司 | Diffusion film and structured light projection module correction device |
| CN111443403A (en) * | 2020-04-06 | 2020-07-24 | 杭州和顺科技股份有限公司 | Diffusion type dual-waveband absorption light filter film |
| CN111679352A (en) * | 2020-06-09 | 2020-09-18 | 盐城东福电子科技有限公司 | Diffusion sheet structure |
| CN112965151A (en) * | 2021-02-06 | 2021-06-15 | 四川兆纪光电科技有限公司 | Optical diffusion film, preparation method thereof and backlight module |
| CN112965150A (en) * | 2021-02-06 | 2021-06-15 | 四川兆纪光电科技有限公司 | Optical composite film, preparation method thereof and backlight module |
| CN114043794A (en) * | 2021-11-16 | 2022-02-15 | 宁波长阳科技股份有限公司 | Polyester base film with adjustable roughness and optical performance and preparation method thereof |
-
2012
- 2012-10-10 CN CN 201220517390 patent/CN202904046U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561607A (en) * | 2016-07-01 | 2018-01-09 | 惠州市创亿达新材料有限公司 | A kind of optical function plate |
| CN107132600A (en) * | 2017-06-27 | 2017-09-05 | 宁波长阳科技股份有限公司 | A kind of extrusion type diffusion barrier and preparation method thereof |
| CN107132600B (en) * | 2017-06-27 | 2019-10-18 | 宁波长阳科技股份有限公司 | A kind of extrusion type diffusion barrier and preparation method thereof |
| CN107828072A (en) * | 2017-11-07 | 2018-03-23 | 张永宏 | Diffusion sheet |
| CN108776361A (en) * | 2018-05-02 | 2018-11-09 | 江苏帝摩斯光电科技有限公司 | A kind of integrated diffusion barrier of LCD backlight module |
| CN111175867A (en) * | 2020-01-14 | 2020-05-19 | 深圳睿晟自动化技术有限公司 | Diffusion film and structured light projection module correction device |
| CN111443403A (en) * | 2020-04-06 | 2020-07-24 | 杭州和顺科技股份有限公司 | Diffusion type dual-waveband absorption light filter film |
| CN111443403B (en) * | 2020-04-06 | 2023-10-10 | 杭州和顺科技股份有限公司 | Diffusion type dual-band absorption filter film |
| CN111679352A (en) * | 2020-06-09 | 2020-09-18 | 盐城东福电子科技有限公司 | Diffusion sheet structure |
| CN112965151A (en) * | 2021-02-06 | 2021-06-15 | 四川兆纪光电科技有限公司 | Optical diffusion film, preparation method thereof and backlight module |
| CN112965150A (en) * | 2021-02-06 | 2021-06-15 | 四川兆纪光电科技有限公司 | Optical composite film, preparation method thereof and backlight module |
| CN114043794A (en) * | 2021-11-16 | 2022-02-15 | 宁波长阳科技股份有限公司 | Polyester base film with adjustable roughness and optical performance and preparation method thereof |
| CN114043794B (en) * | 2021-11-16 | 2023-10-03 | 宁波长阳科技股份有限公司 | Polyester base film with adjustable roughness and optical performance and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |