Optical thin film with high covering power and high luminance and display device comprising optical thin film

A technology for optical films and display devices, applied in optical components, optics, chemical instruments and methods, etc., can solve the problems of inability to cover the small defects of the light guide plate, poor coverability, and the existence of chips, and achieve good display effect, guarantee Uniformity and stable performance

Active Publication Date: 2012-10-31
NINGBO EXCITON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of diffusion film has good optical properties and high luminance when used, but its hiding property is not good, and it cannot cover the tiny defects of the light guide plate; and the diffusion film specially improved for covering property usually does not change the anti-adhes

Method used

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  • Optical thin film with high covering power and high luminance and display device comprising optical thin film
  • Optical thin film with high covering power and high luminance and display device comprising optical thin film
  • Optical thin film with high covering power and high luminance and display device comprising optical thin film

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A high-covering and high-brightness optical film, the optical film includes a PET transparent substrate, the two surfaces of the transparent substrate are provided with a diffusion coating, wherein the diffusion layer is polyurethane, the organic diffusion particles are PMMA, and the inorganic diffusion particles are titanium dioxide . The average particle diameter of the organic large diffusion particles is 10um, the average particle diameter of the organic small diffusion particles is 1um, and the particle diameter range of the inorganic diffusion particles is 0.1-0.3um, and the ratio of the particle diameter of the large diffusion particles to the small diffusion particles is 10:1,

[0035] The parts by weight of the diffusion coating are as follows:

[0036] Diffusion glue layer: 90 parts

[0037] Organic Large Diffusion Particles: 2 parts

[0038] Small organic diffuser particles: 4 parts

[0039] Inorganic diffusion particles: 3 parts

[0040] The weight ratio ...

Embodiment 2

[0044] A high-covering and high-brightness optical film, the optical film includes a PMMA transparent substrate, the two surfaces of the transparent substrate are provided with a diffusion coating, wherein the diffusion layer is polyurethane, the organic diffusion particles are PMMA, and the inorganic diffusion particles are titanium dioxide . The average particle diameter of the organic large diffusion particles is 10um, the average particle diameter of the organic small diffusion particles is 3um, and the particle diameter range of the inorganic diffusion particles is 0.2-0.3um, and the ratio of the particle diameter of the large diffusion particles to the small diffusion particles is 10:3.

[0045] The parts by weight of the diffusion coating are as follows:

[0046] Diffusion adhesive layer: 100 parts by weight

[0047] Organic large diffusion particles: 80 parts

[0048] Organic small diffusion particles: 10 parts

[0049] Inorganic diffusion particles: 3 parts

[00...

Embodiment 3

[0054] A high-covering and high-brightness optical film, the optical film includes a PC transparent substrate, the two surfaces of the transparent substrate are provided with a diffusion coating, wherein the diffusion layer is acrylic resin, the organic diffusion particles are PS, and the inorganic diffusion particles are Titanium dioxide. The average particle diameter of the organic large diffusion particles is 20um, the average particle diameter of the organic small diffusion particles is 5um, and the particle diameter range of the inorganic diffusion particles is 0.2-0.3um. The ratio of the particle diameter of the large diffusion particles to the small diffusion particles It is 4:1.

[0055] The parts by weight of the diffusion coating are as follows:

[0056] Diffusion adhesive layer: 100 parts by weight

[0057] Organic Large Diffusion Particles: 30 parts

[0058] Organic small diffusion particles: 30 parts

[0059] Inorganic diffusion particles: 2.5 parts

[0060] ...

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Abstract

The invention discloses an optical thin film with high covering power and a high luminance and a display device comprising the optical thin film. The optical thin film comprises a transparent substrate, wherein two surfaces of the transparent substrate both are provided with diffusing coatings, the two diffusing coatings contain same ingredients, each diffusing coating comprises a diffusing glue layer embedded with diffusion particles, the diffusion particles comprise organic diffusion particles and inorganic diffusion particles, the organic diffusion particles consist of large organic diffusion particles and small organic diffusion particles, the range of particle sizes of the large organic diffusion particles is 10-50 microns, the range of particle sizes of the small organic diffusion particles is 1-10 microns, the range of particle sizes of the inorganic diffusion particles is 0.1-10 microns, and the thickness of the solidified diffusing coating is 1/5-4/5 of the particle size of the large organic diffusion particles. The optical thin film disclosed by the invention can be used for optimizing the utilization rate of a light source and strengthening the light condensation capability so as to not only have higher luminance and a balance atomizing effect, but also have excellent covering property.

Description

technical field [0001] The invention relates to the field of optical films, in particular to a high-covering and high-brightness optical film and a display device comprising the optical film. Background technique [0002] Display devices, as an interface window for human-computer interaction, have become more and more important. The use of mass consumer goods such as laptops, mobile phones, and televisions is experiencing a blowout growth with the advancement of technology, and a high-quality display device requires To display pictures clearly, but also to ensure that the images are not distorted and the colors are vivid, this requires the display device to be equipped with high-quality components. As a key part of the display device, the backlight module is particularly important. [0003] As an indispensable part of the backlight module, the diffusion film affects the final visual effect of the display device. At present, there are widely used and widely used diffusion f...

Claims

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Application Information

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IPC IPC(8): G02B1/10C09D7/12B32B5/16B32B27/08
Inventor 张彦
Owner NINGBO EXCITON TECH
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