Master batch of high-transmittance and high-masking diffusion plate, method for manufacturing master batch and method for manufacturing diffusion plate

Abstract

The invention discloses master batch of a high-transmittance and high-masking diffusion plate, a method for manufacturing the master batch and a method for manufacturing the diffusion plate. The master batch comprises, by weight, 100 parts of polystyrene, 10-11 parts of organic silicon resin, 0.3-0.4 part of titanium dioxide powder with the particle size of 2-5 micrometers, 0.15-0.2 part of fluorescent brighteners and 0.02-0.025 part of mineral oil. The polystyrene, the organic silicon resin, the titanium dioxide powder, the fluorescent brighteners and the mineral oil are blended with one another and then are squeezed to obtain the master batch, 6.1 parts of the master batch and 100 parts of polystyrene are blended with one another and then are squeezed to obtain mixtures, and the mixtures are further impressed and shaped to obtain the high-transmittance and high-masking diffusion plate. The master batch and the methods have the advantages that the purpose of plastically modifying the master batch mainly can be achieved by diffusion particles by the aid of auxiliary chemical raw materials for color increasing and toughening, accordingly, the diffusion plate has a diffusion function, high-masking effects further can be realized, the transmittance of the diffusion plate can reach 65+ / -3%, the haze of the diffusion plate can reach 99%, and the diffusion of the diffusion plate can reach 88+ / -5%; the cost of modules further can be reduced while requirements on light weights and thinness of the backlight modules are met.

Description

technical field [0001] Embodiments of the present invention relate to the field of optoelectronic materials, and more specifically, embodiments of the present invention relate to a masterbatch of a diffusion plate with high transparency and high shielding properties, a method for preparing such a masterbatch, and a method for preparing a diffuser plate using the masterbatch . Background technique [0002] Generally, a backlight module of a display device mainly includes a light source, a light guide plate, a light reflection plate, a diffusion plate, and a brightness enhancement film. Among them, the light diffusion plate also has the functions of making the brightness of the light emitted from the light source lamp uniform, and covering the bright lines, and the light diffusion plate also plays a role of supporting other optical films. The light sources in the backlight module are generally divided into direct type and side-light type. The direct-type type is to arrange li...

AI Technical Summary

Problems solved by technology

[0005] The present invention overcomes the contradiction between transmittance and haze in the prior art, and the deficiencies in which the transmittance decreases as the haze increases, and provides a high-transmittance and high-shielding diffusion plate masterbatch and its preparation method and implementation of the diffusion plate preparation method In order to solve the problem that the transmittance decreases when the haze of the diffuser plate increases