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

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...

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-adhesion The diffusion layer is adjusted on the basis of the layer, resulting in a lot of luminance loss

In addition, in order to improve the hiding performance, the method of increasing the specific gravity of the diffusion particles on the diffusion layer will have defects such as chipping.

Images