CN203149142U - Optical reflective film with high diffusivity and high brightness - Google Patents
Optical reflective film with high diffusivity and high brightness Download PDFInfo
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- CN203149142U CN203149142U CN 201220670564 CN201220670564U CN203149142U CN 203149142 U CN203149142 U CN 203149142U CN 201220670564 CN201220670564 CN 201220670564 CN 201220670564 U CN201220670564 U CN 201220670564U CN 203149142 U CN203149142 U CN 203149142U
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- reflectance coating
- high brightness
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Abstract
The utility model relates to an optical reflective film with high diffusivity and high brightness, which comprises a reflective film body, a coating layer is coated on at least one surface of a reflective film body layer, the coating layer contains first hollow particles and second hollow particles, the particle size R1 of the hollow-particles is greater than the thickness H of the coating, and the particle size R2 of the hollow-particles is greater than the thickness of the coating. The optical reflective film with high diffusivity and high brightness has excellent reflectivity, and has the characteristics of high diffusivity and high brightness on the light of backlight.
Description
(1) technical field
The utility model relates to a kind of optical reflectance coating.
(2) background technology
Along with the arriving of digital Age, LCD (LCD) has become the most general display technique of current application.Because LCD has environmental protection, low power consuming, low radiation, advantage such as picture is soft is so LCD will be the display technique of main flow in coming few decades.LCD is non-luminiferous display device, must utilize backlight just can reach the function of demonstration.The quality of backlight performance can directly influence LCD video picture quality, and the cost of backlight accounts for the 3-5% of LCD module, and the electric power that consumes more accounts for 75% of module, is considerable spare part in the LCD module.High meticulous, large-sized LCD must have high performance backlight technology to cooperate with it, and therefore when the LCD industry made great efforts to open up new application, the high performance of backlight technology also was the direction that development is made great efforts in the demonstration field.(compeling problem to be solved)
The main member of backlight system comprises: light source, light guide plate, all kinds of blooming piece.At present light source mainly contains three types of EL, CCFL and LED, can be divided into two kinds of side-light type and straight-down negatives according to distribution of light sources position difference.Along with the LCD module constantly develops to brighter, lighter, thinner direction, side-light type CCFL backlight becomes the main flow of present backlight development.
Blooming piece mainly comprises reflectance coating, diffusion barrier and brightness enhancement film in the backlight system.The main effect of reflectance coating is the reflectivity that improves optical surface, will spill the light high-level efficiency of light guide plate bottom and not have the reflection of consume ground, thereby reduce the light consume, reduces power consumption, improves the light saturation degree of liquid crystal display face.
General reflectance coating generally is to add inorganic particles or interpolations and the inconsistent resin of PET at high temperature such as titania, barium sulphate in PET now; be shaped by stretch processes again; make titania, barium sulphate or incompatible resin and PET take off chain; at a large amount of holes of the inner formation of PET film; the principle of total reflection takes place when utilizing light to enter optically thinner medium from optically denser medium, thereby reaches the purpose of reflection ray.But the reflectance coating that obtains by this method has reflectivity not high enough, the problem of light diffusivity difference.
(3) summary of the invention
Not high enough in order to overcome existing optical reflectance coating reflectivity, the deficiency of light diffusivity difference, the utility model provides the high diffusibility high brightness optics that a kind of reflectivity is higher, the light diffusivity is good reflectance coating.
The technical scheme in the invention for solving the technical problem is: a kind of high diffusibility high brightness optics reflectance coating, comprise the reflectance coating body layer, at least the one side of described reflectance coating body layer also is coated with one deck coating, described coating contains first hollow-particle and second hollow-particle, the particle diameter R1 of described first hollow-particle is greater than the thickness H of described coating, and the particle diameter R2 of described second hollow-particle is less than the thickness of described coating.
Further, in the coating in every 10H * 10H area, first hollow-particle has more than four, and all the other zones are filled with second hollow-particle.
Preferably, the particle diameter R1 of described first hollow-particle is 8～20 μ m, and the particle diameter R2 of described second hollow-particle is 2～10 μ m.Preferred, the particle diameter R1 of described first hollow-particle is 8～18 μ m, and the particle diameter R2 of described second hollow-particle is 2～8 μ m.Most preferred, the particle diameter R1 of described first hollow-particle is 10～15 μ m, and the particle diameter R2 of described second hollow-particle is 2～6 μ m.
Further, described first hollow-particle and second hollow-particle are selected from Hollow Glass Sphere or hollow polymethylacrylic acid four ester pearls or hollow silicone pearl or hollow polystyrene bead.
Further, described coating is the combination of ethyl acetate, acryl resin, isocyanate crosslinking, ultraviolet light absorber.
Further, described reflectance coating body layer is the white PET mylar through two-way stretch.
The beneficial effects of the utility model are: the utlity model has excellent reflectivity, make the light of backlight have the characteristics of high brightness and high diffusibility.
(4) description of drawings
Fig. 1 is structural representation of the present utility model.
(5) embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
With reference to Fig. 1, a kind of high diffusibility high brightness optics reflectance coating comprises reflectance coating body layer 1, and in the present embodiment, described reflectance coating body layer 1 is the white PET mylar through two-way stretch.
The one side of described reflectance coating body layer 1 also is coated with one deck coating 2, described coating 2 contains first hollow-particle 3 and second hollow-particle 4, the particle diameter R1 of described first hollow-particle 3 is greater than the thickness H of described coating 2, and the particle diameter R2 of described second hollow-particle 4 is less than the thickness of described coating 2.
In the present embodiment, in the coating in every 10H * 10H area, first hollow-particle 3 has more than four, and all the other zones are filled with second hollow-particle 4.This kind is arranged so that the reflecting properties of reflectance coating is more excellent.
The particle diameter R1 of described first hollow-particle 3 is recommended in 8～20 mu m ranges, can obtain reflecting effect preferably, is preferably 8～18 μ m, most preferably is 10～15 μ m, and getting R1 in the present embodiment is 12 μ m; The particle diameter R2 of described second hollow-particle 4 is recommended in 2～10 mu m ranges, can obtain reflecting effect preferably, is preferably 2～8 μ m, most preferably is 2～6 μ m, and removing R2 in the present embodiment is 4 μ m.
Described first hollow-particle 3 and second hollow-particle 4 can be selected from Hollow Glass Sphere or hollow polymethylacrylic acid four ester pearls or hollow silicone pearl or hollow polystyrene bead.
Coating can adopt following prescription (by weight):
Ethyl acetate: 32 parts～55 parts;
Acryl resin: 25 parts～45 parts;
Isocyanate crosslinking: 5 parts～8 parts;
Ultraviolet light absorber: 0.1 part～0.2 part.
With said components by and first hollow-particle 3, second hollow-particle 4 mix, stir, obtain coating fluid.Coating method can be selected any in the accurate coating method, as scraper, rod be coated with, rod is coated with, etc. coating method.It is dry to be coated with the back, and drying means can utilize general drying mode that coating is carried out drying, as drying modes (being heating and curing as hot-air oven) such as hot blast, infrared ray heating.
Comparative example: commercially available uncoated UX-188 reflectance coating.Embodiment of the present utility model and comparative example are carried out the briliancy measurement: measure the sample briliancy with BM-7A, 23 ± 2 ℃ of test environments, 55 ± 5%RH, test condition: testing sample length and width L*W (42cm*26cm), the measurement point position is:
1.(0.1L，0.1W)2.(0.1L，0.1W)3.(0.9L，0.1W)
6.(0.1L，0.5W)5.(0.5L，0.5W)4.(0.9L，0.5W)
7.(0.1L，0.9W)8.(0.5L，0.9W)9.(0.9L，0.9W)
Definition center briliancy is the 5th brightness value, respectively embodiment is placed identical module backlight with comparative example, carries out briliancy and measures, and its result is as shown in the table:
As seen from table, the center briliancy of the backlight module of the reflectance coating of use embodiment is higher than the backlight module of the reflectance coating that uses comparative example 1.Compare with the reflectance coating of comparative example, the reflectance coating of embodiment can be promoted to 81% by 75.6% with equal neat degree, and the lifting amplitude is 5.4%; The center briliancy is by 3188.5cd/m
2Be promoted to 3335.1cd/m
2, the lifting amplitude is 4.6%; 9 average luminance are by 3013.5cd/m
2Be promoted to 3112.8cd/m
2, the lifting amplitude is 3.3%.
The explanation of above test data when reflectance coating is coated with the coating of hollow-particle, can increases it and be assembled in central briliancy and average luminance on the module backlight, and improves its all degree together, thereby has effectively improved the utilization factor of backlight.
Claims (7)
1. high diffusibility high brightness optics reflectance coating, comprise the reflectance coating body layer, it is characterized in that: the one side at least of described reflectance coating body layer also is coated with one deck coating, described coating contains first hollow-particle and second hollow-particle, the particle diameter R1 of described first hollow-particle is greater than the thickness H of described coating, and the particle diameter R2 of described second hollow-particle is less than the thickness of described coating.
2. high diffusibility high brightness optics reflectance coating as claimed in claim 1 is characterized in that: in the coating in every 10H * 10H area, first hollow-particle has more than four, and all the other zones are filled with second hollow-particle.
3. high diffusibility high brightness optics reflectance coating as claimed in claim 2, it is characterized in that: the particle diameter R1 of described first hollow-particle is 8～20 μ m, the particle diameter R2 of described second hollow-particle is 2～10 μ m.
4. high diffusibility high brightness optics reflectance coating as claimed in claim 3, it is characterized in that: the particle diameter R1 of described first hollow-particle is 8～18 μ m, the particle diameter R2 of described second hollow-particle is 2～8 μ m.
5. high diffusibility high brightness optics reflectance coating as claimed in claim 4, it is characterized in that: the particle diameter R1 of described first hollow-particle is 10～15 μ m, the particle diameter R2 of described second hollow-particle is 2～6 μ m.
6. as the described high diffusibility high brightness of one of claim 1～5 optics reflectance coating, it is characterized in that: described first hollow-particle and second hollow-particle are selected from Hollow Glass Sphere or hollow polymethylacrylic acid four ester pearls or hollow silicone pearl or hollow polystyrene bead.
7. as the described high diffusibility high brightness of one of claim 1～5 optics reflectance coating, it is characterized in that: described reflectance coating body layer is the white PET mylar through two-way stretch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220670564 CN203149142U (en) | 2012-11-23 | 2012-11-23 | Optical reflective film with high diffusivity and high brightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220670564 CN203149142U (en) | 2012-11-23 | 2012-11-23 | Optical reflective film with high diffusivity and high brightness |
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| Publication Number | Publication Date |
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| CN203149142U true CN203149142U (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220670564 Expired - Lifetime CN203149142U (en) | 2012-11-23 | 2012-11-23 | Optical reflective film with high diffusivity and high brightness |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267453A (en) * | 2014-10-17 | 2015-01-07 | 山东胜通光学材料科技有限公司 | High-reflectance optical film and manufacturing method thereof |
| CN106647017A (en) * | 2015-11-04 | 2017-05-10 | 宁波长阳科技股份有限公司 | High-performance reflecting film applied to backlight module and preparation method of reflecting film |
| CN108717214A (en) * | 2018-08-06 | 2018-10-30 | 曹立军 | A kind of application type optical reflectance coating and preparation method thereof |
| KR20230064296A (en) * | 2021-11-03 | 2023-05-10 | 한국기술교육대학교 산학협력단 | Moire preventing filter and fabricating method of the same |
-
2012
- 2012-11-23 CN CN 201220670564 patent/CN203149142U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267453A (en) * | 2014-10-17 | 2015-01-07 | 山东胜通光学材料科技有限公司 | High-reflectance optical film and manufacturing method thereof |
| CN106647017A (en) * | 2015-11-04 | 2017-05-10 | 宁波长阳科技股份有限公司 | High-performance reflecting film applied to backlight module and preparation method of reflecting film |
| CN108717214A (en) * | 2018-08-06 | 2018-10-30 | 曹立军 | A kind of application type optical reflectance coating and preparation method thereof |
| KR20230064296A (en) * | 2021-11-03 | 2023-05-10 | 한국기술교육대학교 산학협력단 | Moire preventing filter and fabricating method of the same |
| KR102641349B1 (en) * | 2021-11-03 | 2024-02-27 | 한국기술교육대학교 산학협력단 | Moire preventing filter and fabricating method of the same |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |
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| CX01 | Expiry of patent term |