Color film substrate and method for preparing color film substrate, liquid crystal display panel

A liquid crystal display panel, comprising a color film substrate, and a driving substrate provided in a box opposite to the color film substrate;

• wherein the color film substrate comprises a base substrate, a black matrix layer, a color-resist layer, a protective layer, and a supporting post layer that are stacked and provided in sequence;
• wherein, the black matrix layer is provided with light-transmitting windows distributed in an array, the color-resist layer covers each light-transmitting window, and the supporting post layer is provided with a supporting post;
• the color film substrate comprises a plurality of different subregions;
• in at least part of the subregions, the color-resist layer is provided with a partition slot located between rows of the light-transmitting windows and exposing the black matrix layer, and an orthographic projection of the supporting post on the base substrate at least partially overlaps with an orthographic projection of the partition slot on the base substrate;
• wherein, in at least two of the subregions, the partition slot is provided with different widths, and a width of the partition slot is a size of the partition slot in a column direction.

A method for preparing a color film substrate, the color film substrate comprising a base substrate, a black matrix layer, a color-resist layer, a protective layer, and a supporting post layer that are stacked and provided in sequence;

• wherein, the black matrix layer is provided with light-transmitting windows distributed in an array, the color-resist layer covers each light-transmitting window, and the supporting post layer is provided with a supporting post;
• the color film substrate comprises a plurality of different subregions;
• in at least part of the subregions, the color-resist layer is provided with a partition slot located between rows of the light-transmitting windows and exposing the black matrix layer, and an orthographic projection of the supporting post on the base substrate at least partially overlaps with an orthographic projection of the partition slot on the base substrate;
• the method for preparing the color film substrate comprises:
• preparing a test color film substrate;
• obtaining an average value of a supporting post height of at least one subregion of the test color film substrate;
• obtaining correction relationship information, the correction relationship information comprising a mapping relationship between a relevant parameter of a partition slot width and a relevant parameter of the supporting post height;
• determining a target value of the relevant parameter of the partition slot width of the subregion according to the relevant parameter of the partition slot width and the average value of the supporting post height of the at least one subregion of the test color film substrate, a target value of the supporting post height and the correction relationship information;
• and
• preparing a target color film substrate according to a target value of the relevant parameter of the partition slot width of each subregion.