Acrylic acid series resin particle, coating combination and optical material

Abstract

The invention provides an acrylic acid series resin particle capable of forming an optical material with uniform light diffusion property, a coating combination and the optical material. The acrylic acid series resin particle is characterized in that: value alpha, value gamma and value eta meet a predetermined relationship, and CV value is 30-40%, meanwhile value A is less than 0.75, and value B is 1.1-1.6, wherein the value alpha is cumulative 10% particle size by volume basis/ cumulative 10% particle size by count basis, the value gamma is cumulative 50% particle size by volume basis/ cumulative 50% particle size by count basis, the value eta is cumulative 90% particle size by volume basis/ cumulative 90% particle size by count basis, the CV value is particle size by volume basis, the value A is cumulative 10% particle size by volume basis/ cumulative 50% particle size by volume basis, and the value B is cumulative 90% particle size by volume basis/ cumulative 50% particle size by volume basis.

Description

technical field [0001] The present invention relates to acrylic resin particles, coating compositions and optical materials. Background technique [0002] In recent years, liquid crystal display devices have been used in various applications as display devices. The liquid crystal display device is provided with a backlight unit on the back of the liquid crystal cell. The backlight unit is composed of a light-emitting light source such as a cold cathode tube or an LED, a lamp reflector, a light guide plate, a light diffusion plate arranged on the front side of the light guide plate, and a light reflection plate arranged on the rear side of the light guide plate. . The said light-diffusion plate is an optical film which diffuses the light released from a light-emitting light source, and makes it incident on a liquid crystal panel. [0003] In addition, in order to reduce power consumption, it is also required to increase the brightness of the liquid crystal display screen. ...

AI Technical Summary

Problems solved by technology

[0005] However, the coefficient of variation (CV value) of the particle size distribution of the polymer particles contained in the composition for optical materials is limited to 20% or less, and the variation in particle size is small. When forming a light-diffusing layer, the polymer particles are arranged in an aligned state. As a result, gaps are formed between the polymer particles instead, and the light passing through the gaps is not diffused, resulting in a problem that the light diffusivity becomes uneven.

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