Composite white pigment, photoresist material containing same and application of composite white pigment

Abstract

The invention relates to the field of liquid crystal display, in particular to a composite white pigment and a photoresist material. The composite white pigment comprises an inner core prepared from a non-white pigment, and an outer layer prepared from a white pigment, wherein the photoresist material provided by the invention is prepared from the following components in parts by weight: 5-15 parts of a photosensitizer, 5-15 parts of a dispersing agent, 50-80 parts of a solvent and 5-15 parts of a composite white pigment. Through a double-layer structure design with different colors in inner layer and outer layer, the defects of the original ordinary pure white pigment on a light absorption surface are improved with the nonwhite inner core; improvement of the light absorption properties of the traditional white photoresist material is facilitated; the absorption rate of the white color on the light can be increased; the screening capacity of the photoresist is improved; the color can be relatively uniform; the material can be ideally applied to a one-glass-solution (OGS) frame material; a few of manufacture procedures of a white lithography process can be reduced; and the OD value can be effectively increased.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a composite white pigment, a photoresist material containing the composite white pigment and applications thereof. Background technique [0002] The new generation of OGS (One Glass Solution) products is a potential new direction for the development of capacitive screens. Compared with G / G, it saves a piece of glass substrate and reduces the cost, and the product structure is simpler, with lighter, thinner, The characteristics of better light transmission. However, OGS has encountered a problem in terms of appearance. OGS uses a photoresist frame material. When making a white cover plate, because white itself does not absorb light, most of the light will be scattered by pigment particles (see figure 1 ), so the white photoresist has poor shielding ability. In order to achieve the same optical effect as the black photoresist, the thickness of the white photoresist must be at...

AI Technical Summary

Problems solved by technology

However, OGS has encountered a problem in terms of appearance. OGS uses a photoresist frame material. When making a white cover plate, because white itself does not absorb light, most of the light will be scattered by pigment particles (see figure 1 ), so the white photoresist has poor shielding ability. In order to achieve the same optical effect as the black photoresist, the thickness of the white photoresist must be at least 20um, or an additional layer of 1-2um thick black photoresist is added, so that It will easily lead to ITO or metal disconnection during climbing, affecting product functions

Therefore, OGS products using white photoresist have not yet appeared

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