Optical upper diffusion film and light crystal display backlight source using same
A diffusion film and optical technology, which is applied in the field of liquid crystal display backlight, can solve the problems of low total light transmittance of the light source, increase the viewing angle of the emitted light, reduce the brightness of the light source, etc., and achieve high total light transmittance, wide viewing angle, high The effect of total light transmittance and brightness
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[0019] Example 1
[0020] like figure 2 As shown, the optical diffusion film 100 mainly includes a transparent PET substrate 110 , a diffusion coating 120 containing spherical PMMA diffusing particles 140 and an anti-adhesion coating 130 containing spherical PMMA anti-adhesive particles 150 . In a specific embodiment, the diffusion particles in the diffusion layer 120 are combined according to the ratio in Table 1, some diffusion particles protruding from the surface of the diffusion film are dispersed in the diffusion coating, and the thickness of the diffusion coating is 1 / 1 of the size of the upper diffusion particles. 2. Its protruding part can prevent the surface of the diffusion film from being scratched. Due to the low coating density of the diffusing particles, the product haze is relatively low and the total light transmittance of the product is high. The anti-adhesion layer 130 contains anti-adhesion particles 150 with a smaller particle size of 5 microns, the coa...
Example Embodiment
[0023] Example 2
[0024] like image 3 As shown, the optical diffusion film 200 mainly includes a transparent PET substrate 210 , a diffusion coating 220 containing spherical PMMA diffusing particles 250 , 240 and an anti-adhesive coating 230 containing spherical PMMA anti-adhesive particles 260 . In a specific embodiment, the diffusion particles in the diffusion layer 220 are combined according to the ratio in Table 2, the upper diffusion film particles of the large particles are dispersed and arranged in the diffusion coating, and the thickness of the diffusion coating is 3 times the maximum size of the upper diffusion particles. / 4, the protruding part can prevent the diffusion film coating from being scratched by other components and also prevent the optical diffusion film and other components from sticking together. Small particle diffusion particles are dispersed and filled in the diffusion coating 220, and small particles are used to diffuse The difference in the refr...
Example Embodiment
[0027] Example 3
[0028] like image 3 As shown, the optical diffusion film 200 mainly includes a transparent PET substrate 210 , a diffusion coating 220 containing spherical PMMA diffusing particles 250 , 240 and an anti-adhesive coating 230 containing spherical PMMA anti-adhesive particles 260 . In a specific embodiment, the diffusion particles in the diffusion layer 220 are combined according to the ratio in Table 3, the upper diffusion film particles of the large particles are dispersed and arranged in the diffusion coating, and the thickness of the diffusion coating is 2 times the maximum size of the upper diffusion particles. / 3, the protruding part can prevent the diffusion film coating from being scratched by other components, and can also prevent the optical diffusion film and other components from sticking together. The difference in the refractive index between the particles and the substrate and the resin coating has a diffusing effect on the light and improves t...
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