Color film substrate and preparation method thereof and display panel and display

Abstract

The invention relates to the field of display processing, in particular to a color film substrate and a preparation method thereof and a display panel and a display. The color film comprises a lining substrate, black matrices, pixel units, a conducting layer. The black matrices are overlaid on the lining substrate to form black matrix graphic patterns. Pixel grooves are formed at the positions corresponding to the opening positions of the black matrix graphic patterns, of the lining substrate. The openings of the corresponding pixel grooves and black matrix graphic patterns are filled by the pixel units and the pixel grooves on a one-to-one mode. The upper surface of the pixel units is in parallel with the upper surface of the black matrices. The conducting layer is overlaid on the surface of the black matrices and the surface of the pixel units. The color substrate can avoid the problem of light leakage caused by the elevation difference between the black matrices and pixel units, can avoid the angle section difference caused by the forming of overlap area, and therefore is beneficial to the optimization of the display effect of the display panel containing the color film substrate.

Description

technical field [0001] The invention relates to the processing field of displays, in particular to a color filter substrate and a preparation method thereof, as well as a display panel and a display. Background technique [0002] Many electronic products such as TVs, mobile phones and refrigerators can be used with flat panel displays. Even in the existing automobile industry, there is no lack of applications of flat panel displays as vehicle interiors. Liquid crystal display panels have become mainstream products of flat panel displays due to their good display quality and relatively low cost. Generally speaking, a liquid crystal display panel can be composed of an array substrate, a color filter substrate, and a liquid crystal layer disposed therebetween. The array substrate has a plurality of array pixel units for driving the liquid crystal molecules in the liquid crystal layer. The color filter substrate has a plurality of pixel units for displaying different colors. ...

AI Technical Summary

Problems solved by technology

Since the color filter substrate has different thickness requirements for the pixel unit (within a certain range) and the black matrix (the thinner the better), this makes the pixel unit and black matrix on the base substrate during the preparation of the color filter substrate The heights are different, and the existence of this height difference may cause the problem of light leakage, which in turn affects the display effect

[0004] In order to avoid the poor display effect caused by the light leakage problem, when preparing the pixel unit in the prior art, the edge of the pixel unit is often covered with the edge of the black matrix to form an overlapping area

However, although this method of setting the overlapping area can avoid the occurrence of light leakage, the height ratio of the overlapping area is inevitably higher than the height of the pixel unit itself due to the relationship between the lower layer of the overlapping area including the black matrix. Step difference (that is, the difference between the height of the overlapping area and the height of the pixel unit itself)

However, the existence of angular segment difference easily leads to uneven thickness of the liquid crystal cell of the prepared display panel, thereby affecting the display effect.

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