Method for making black matrix and colorful filter

Abstract

The invention is a black matrix and color filter making method, firstly providing a transparent basal plate already formed with red, green and blue color blocks, and then forming a black layer on the basal plate. Successively, leveling the black layer up to a fixed thickness and synchronously eliminating the ox horn area of the red, green and blue color blocks to expose the top surface of the basal plate.

Description

Technical field [0001] The present invention relates to a method for manufacturing a black matrix (black matrix, BM) and a color filter (color filter), and particularly relates to a black matrix and color filter that can simplify the manufacturing process. Production Method. Background technique [0002] Liquid crystal display (LCD) has the advantages of low-voltage operation, no radiation scattering, light weight and small size, etc., which cannot be achieved by traditional cathode ray tube (CRT) displays. Therefore, liquid crystal displays have become the main topic of display research in recent years, and they are developing towards colorization. [0003] Currently, most colorized liquid crystal displays use a combination of backlight (BL) and color filters to achieve the effect of colorization. The structure of the color filter is usually like figure 1 Shown. [0004] figure 1 It is a schematic cross-sectional view of a well-known color filter. Please refer to figure 1 A ...

AI Technical Summary

Problems solved by technology

However, the known color filter has to consider the alignment accuracy of the black matrix and the color color blocks in the manufacturing process, avoiding the overlap of the color blocks of each color and causing the overall flatness of the color filter to decrease, etc., so the black matrix The line width must be limited to about 12 microns or more, so the aperture ratio cannot be increased

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