Color filter, manufacturing method thereof and display device

Abstract

The embodiment of the invention provides a color filter, a manufacturing method of the color filter and a display device and relates to the technical field of display. The color filter can effectively solve the problem that when a color filter unit is manufactured through the ink jet method, ink with different colors in sub-pixel units partitioned by the black matrix is mixed or the ink is uneven in thickness. When the color filter is applied to color display, the evenness of the brightness of a displayed image can be effectively improved, and light leak is prevented. The color filter comprises a substrate, a black matrix arranged on the surface of the substrate, color filter units arranged in sub-pixel units and further comprises an isolating layer arranged on the upper surface of the black matrix, wherein the black matrix defines the multiple sub-pixel units, each color filter unit is composed of color ink, the black matrix and the color ink have the same hydrophilicity and hydrophobicity, and hydrophilicity and hydrophobicity of the isolating layer are opposite to those of the black matrix and the color ink. The color filter and the display device comprising the color filter can be manufactured through the method.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a color filter, a preparation method thereof, and a display device. Background technique [0002] A Liquid Crystal Display (LCD for short) has become a mainstream display device in the display field. The luminescence principle of LCD is inactive luminescence. It must provide light source with the help of backlight, and cooperate with the driving device to control the deflection of liquid crystal molecules, so as to form black and white grayscale display, and then pass through the color filter (Color Filter, referred to as It is a color filter unit with different colors in CF), such as red (R), green (R), blue (R), etc., thereby forming a color display screen. Therefore, the color filter is an important part of the liquid crystal display device to achieve image colorization. [0003] At present, the color filter unit in the color filter is mainly prepared by a pigment-dispersed...

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Problems solved by technology

[0010] In view of this, in order to overcome the defects of the prior art, the embodiments of the present invention provide a color filter, its preparation method, and a display device. The color filter can effectively solve the problem of black The problem of inks of different colors mixing with each other or ink thickness unevenness in the sub-pixel units separated by a matrix; when the color filter is applied to color display, it can effectively improve the uniformity of the brightness of the displayed image and prevent light leakage and other phenomena. occur

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