A kind of reflective film of high-shielding anti-fingerprint backlight module and its preparation process

Abstract

The invention discloses a high-shading anti-fingerprint anti-fingerprint backlight module reflective film and a preparation process thereof, comprising a base layer, a high-refraction coating and an anti-fingerprint coating. The number is multiple layers, the anti-fingerprint coating is coated on the top of the high-refractive coating, and the silver-plated film is arranged on the top of the anti-fingerprint coating. The invention sets high refraction coating, anti-fingerprint coating and corresponding coating components in the reflective film, improves the density and luminance of the reflective film, enables the product to have the characteristic of luminance gain, and can regulate the reflected light , change the direction of the reflected light so that it emits light in a positive direction, avoid fingerprints, prevent grease and sweat contamination, the coating is scratch-resistant and has low light transmittance, excellent shielding, and is suitable for widespread promotion and use.

Description

technical field [0001] The invention relates to the field of reflective films, in particular to a reflective film for a high-shielding and fingerprint-resistant backlight module and a preparation process thereof. Background technique [0002] The backlight module is composed of multi-layer optical films. The redistribution of light energy is realized through the function of each film material on light. The backlight light source must use optical films such as reflective film and diffusion film to achieve the average projection of the light source. The purpose of the high shading rate reflective film is an important part of the liquid crystal display, the level of its reflectivity will directly affect the brightness of the liquid crystal display, the high shading rate reflective film is generally used under the lamp and the light guide plate The light emitted from the dot surface of the body is reflected to the required plane inside the light guide body, so that the light pas...

AI Technical Summary

Problems solved by technology

[0002] The backlight module is composed of multi-layer optical films. Through the function of each film material on light, the redistribution of light energy is realized. The backlight source must use optical films such as reflective film and diffusion film to achieve the average projection of the light source. The high shading rate reflective film is an important part of the liquid crystal display, and its reflectivity will directly affect the brightness of the liquid crystal display. The high shading rate reflective film is generally applied under the lamp tube and the light guide plate, and the The light emitted from the dot surface of the body is reflected to the required plane inside the light guide body, so that the light passes through the reflection, transmission and polarization characteristics of the film layer during the propagation path, so as to obtain a range of wavelengths in a certain band or multiple bands. Various special forms of light such as reflection, transmission and polarization, but light loss often occurs in the process. Among them, the metal reflective film has a simple preparation process and a wide wavelength range of work, but the light loss is large, and the reflectivity is attenuated accordingly. In order to improve the reflectivity of the metal reflective film, a dielectric layer is added to the outside of the film, but the metal dielectric reflective film increases the reflectivity of a certain wavelength / wave region, which may destroy the metal reflection characteristics of the metal film, while the conventional optical reflector Poor shading rate will lead to light leakage and uneven backlight of the reflective sheet, which will affect the normal use of the optical reflective sheet, and the fingerprint resistance of the conventional optical reflective sheet is poor, fingerprints will appear when fingers touch the optical reflective sheet, and will Contaminated with grease, sweat and other impurities on the hands, the silver-plated layer of the optical reflector is easily oxidized and damaged by the above substances, which affects the service life of the optical reflector

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