Color film substrate and manufacture method thereof

Abstract

The invention relates to a color film substrate and a manufacture method thereof. The color film substrate comprises a substrate and a color film layer formed on the inner surface of the substrate; and the outer surface of the substrate is provided with a black matrix used for scattering incident light outside. The manufacture method comprises the following steps: depositing a layer of metal layer on the outer surface of the substrate; coating a layer of photosensitive resist; adopting a grey tone mask plate to perform exposure and developing treatment to form a complete exposure area, a partial exposure area and an unexposed area; etching the metal layer in the complete exposure area by a first wet etching process; removing the photosensitive resist in the partial exposure area by an ashing process; and etching a concave-convex structure on the surface of the metal layer in the partial exposure area by a second wet etching process with insufficient etching. The outer surface of the substrate facing the incident light outside is provided with the black matrix with the function of scattering the incident light outside, so that the incident light outside entering an LCD forms diffuse reflection on the black matrix to prevent glare and improve the visibility and the definition of images.

Description

technical field [0001] The invention relates to a display device and a manufacturing method thereof, in particular to a color filter substrate and a manufacturing method thereof. Background technique [0002] In recent years, liquid crystal display (Liquid Crystal Display, LCD for short) products have developed very rapidly, and more and more high-quality liquid crystal displays are gradually launched on the market, and their application fields are also constantly expanding. The main structure of the liquid crystal display panel includes a color filter substrate and an array substrate boxed together, and a polarizing film is arranged on the outer surfaces of the color filter substrate and the array substrate. The function of the polarizing film is to turn ordinary light into polarized light with precisely controlled direction, and then display images, that is, the polarizing film that absorbs vertical light allows horizontal light to pass through, and the polarizing film tha...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a color filter substrate and its manufacturing method, which can effectively solve the technical defects such as the increase of LCD thickness and cost increase caused by the use of polarizing film with the function of preventing glare in existing LCDs.

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