A color filter substrate and its manufacturing method and display panel

Abstract

The invention provides a color film substrate and a manufacturing method thereof and a display panel. The color film substrate comprises an underlayer substrate, first black matrixes, color light filtering units and second black matrixes. The first black matrixes and the color light filtering units are arranged on one side of the underlayer substrate. Multiple pixel regions are defined by the first black matrixes, and the color light filtering units are only arranged in the pixel regions. The second black matrixes are arranged on the other side of the underlayer substrate, and the second black matrixes are arranged corresponding to interfaces of the first black matrixes and the color light filtering units. The first black matrixes and the color light filtering units located on one side of the underlayer substrate are not overlapped, the angle section difference of the color light filtering units can be reduced, and therefore the thickness of a flat layer for covering the color light filtering units can be reduced. The second black matrixes located on the other side of the underlayer substrate are arranged corresponding to the interfaces of the first black matrixes and the color light filtering units, light leakage caused by gaps existing between the first black matrixes and the color light filtering units can be avoided, and OD values of the black matrixes are guaranteed.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a color filter substrate, a manufacturing method thereof, and a display panel. Background technique [0002] Such as figure 1 Shown is a schematic structural view of an existing color filter substrate, which includes: a base substrate 101, an ITO electrostatic protection layer 102 disposed on one side of the base substrate 101, and a black ink layer 102 disposed on the other side of the base substrate. Matrix (BM) 103 , RGB color filter unit 104 , planarization layer (OC) 105 and spacer (PS) 106 . In the color filter substrate with this structure, the black matrix 103 is directly prepared on the base substrate 101 , and its thickness is generally about half of that of the RGB color filter unit 104 . The color filter substrate with this structure tends to cause a relatively large angular segment difference at the overlapped part of the RGB color filter unit 104 and the black ma...

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Problems solved by technology

[0003] In view of this, the present invention provides a color filter substrate, a manufacturing method thereof, and a display panel to solve the problem that the existing color filter substrate has a large angular difference between the overlapping parts of the color filter unit and the black matrix.

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