Color filter substrate, manufacturing method thereof, and OLED display device
View Patent ↗The present disclosure relates to a color filter substrate, a manufacturing method thereof, and an OLED display device. The color filter substrate comprises a substrate, a black matrix, a plurality of color resists, and a plurality of isolation walls. The present disclosure disposes the plurality of isolation walls on the black matrix and between two adjacent color resists, thereby preventing light crosstalk between the adjacent color resists and preventing color mixing, and therefore improving display effect.
1. A color filter substrate, comprising:
a substrate;
a black matrix disposed on the substrate, wherein the black matrix is provided with a plurality of openings arranged at intervals in a matrix;
a plurality of color resists coated in the openings; and
a plurality of isolation walls disposed between adjacent color resists and on the black matrix.
2. The color filter substrate according to claim 1 , wherein a plurality of grooves are disposed on the black matrix and between the adjacent color resists, and the isolation walls are disposed on the grooves of the black matrix.
3. The color filter substrate according to claim 2 , wherein the grooves comprise one or more of rectangular grooves, serrated grooves, wavy grooves, and arc-shaped grooves.
4. The color filter substrate according to claim 1 , wherein a constituent material of the isolation walls comprises a black polyimide (PI) material.
5. The color filter substrate according to claim 1 , wherein a surface of the isolation walls away from the substrate is flush with a surface of the color resists away from the substrate.
6. A manufacturing method of the color filter substrate according to claim 1 , comprising:
providing the substrate, manufacturing the black matrix on the substrate by coating, baking, exposing, and developing processes, arranging the openings at intervals in a matrix on the black matrix, and disposing the color resists in the openings; and
disposing the isolation walls on the black matrix and between the adjacent color resists.
7. The manufacturing method of the color filter substrate according to claim 6 , wherein in the step of disposing the isolation walls on the black matrix and between the adjacent color resists, a plurality of grooves are manufactured on the black matrix and between the adjacent color resists first, and then the isolation walls are formed in the grooves.
8. The manufacturing method of the color filter substrate according to claim 7 , wherein in the step of disposing the isolation walls on the black matrix and between the adjacent color resists, the isolation walls are formed by printing or coating an isolation wall material to fill into the grooves and then irradiating the isolation wall material with ultraviolet light.
9. The manufacturing method of the color filter substrate according to claim 8 , wherein the isolation wall material comprises a black polyimide (PI) material.
10. An organic light-emitting diode (OLED) display device, comprising:
the color filter substrate according to claim 1 ; and
an OLED device, wherein the color filter substrate is disposed on the OLED device.