Color filter and manufacturing method thereof

Abstract

The invention provides a color filter and a manufacturing method thereof and relates to the field of a liquid crystal display. The problem of the prior art that the technique is complex because a flat layer is required to be manufactured in the manufacturing process of the color filter is solved. The embodiment of the invention provides the color filter and the manufacturing method thereof. The color filter comprises a black matrix layer and a color filtering layer, wherein the black matrix layer is formed on a substrate; the color filtering layer is formed in a sub-pixel region limited by the black matrix layer; the black matrix layer with the cross section of big-top small-bottom shape and the color filtering layer with the cross section of small-top big-bottom shape have a coincident area; and the membrane thickness in the coincident area is as same as the membrane thickness in the non-coincident area. The black matrix layer and the color filtering layer have the coincident area and the membrane thickness in the coincident area is as same as the membrane thickness in the non-coincident area, so that the manufacturing for the flat layer is not required and the manufacturing technique is simple.

Description

[0001] Parent case application number: 201210050318.1, application date: February 29, 2012 technical field [0002] The invention relates to the field of liquid crystal displays, in particular to a color filter and a manufacturing method thereof. Background technique [0003] Liquid crystal display (Liquid Crystal Display, LCD) is a non-active luminous original. It must provide light through the internal backlight. It is matched with the driver IC and liquid crystal control to form black and white grayscale display, and then through the color filter ( The red (R), green (G) and blue (B) color filter layers of ColorFilter (CF) form a color display screen. Therefore, the color filter is a key component of the colorization of the liquid crystal display. The quality itself not only determines the quality of the LCD screen, but also determines the yield rate of the subsequent process. [0004] When making color filters in the current process, the color filter layer needs to have...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to solve the problem existing in the prior art that the production process of the flat layer needs to be complicated in the production process of the color filter. The embodiment of the present invention provides a color filter and its manufacturing method. The optical filter includes, including a black matrix layer formed on the substrate, and a color layer formed on the sub-pixel area defined by the black matrix layer, wherein the black matrix layer has a cross section of a shape with a large top and a small bottom, and a cross section with a large bottom and an upper top The color filter layers of small corresponding shapes have overlapping areas, and the film thickness of the overlapping areas is the same as that of the non-overlapping areas;

Images