US 10,502,994 B2 · Color filter on array substrate and fabricating method thereof as well as a display device

Abstract

The present invention provides a COA substrate and a fabricating method thereof as well as a display device, and relates to the field of display technology, which solves the problem of a relatively large parasitic capacitance to be generated between the data line and the common electrode layer because the common electrode layer is formed on the black matrix directly in the existing technical solution, avoids signal delay, and improves the image display quality of the display. The COA substrate comprises: a black matrix, a color filter, a common electrode layer and an organic insulating film layer formed on the black matrix, the common electrode layer is formed on the organic insulating film layer, the organic insulating film layer is arranged on the color filter and covers the position of the color filter; the material of the organic insulating film layer is an organic insulating material having a relative dielectric constant less than 10. The present invention is applied in the fabricating technology of a display device.

Claims14

Dependent claims

An array substrate, comprising:

a plurality of thin film transistors;
a first passivation layer on the plurality of thin film transistors;
a black matrix on the first passivation layer;
a color filter formed over a top surface of the black matrix and exposing at least a portion of the top surface of the black matrix, wherein a top surface of the color filter is higher than the exposed portion of the top surface of the black matrix;
an organic insulating film layer formed over a top surface of the color filter and the exposed portion of the top surface of the black matrix;
and
a common electrode layer formed over a top surface of the organic insulating film layer,
wherein
the top surface of the organic insulating film layer is flat,
a material of the organic insulating film layer is an organic insulating material having a relative dielectric constant less than 10,
the color filter further exposes a portion of the black matrix corresponding to a data line, and the common electrode layer is arranged directly above the portion of the black matrix.

8 more elements

A method of fabricating an array substrate, wherein the method comprises:

forming a plurality of thin film transistors on a top surface of a substrate;
forming a first passivation layer on the plurality of thin film transistors;
forming a black matrix on the first passivation layer;
forming a color filter over a top surface of the black matrix, wherein the color filter exposes at least a portion of the top surface of the black matrix and a top surface of the color filter is higher than the exposed portion of the top surface of the black matrix;
forming an organic insulating film layer over a top surface of the color filter and the exposed portion of the top surface of the black matrix using an organic insulating material having a relative dielectric constant less than 10;
forming a common electrode layer over a top surface of the organic insulating film layer, wherein the top surface of the organic insulating film layer is flat,
wherein the color filter further exposes a portion of the black matrix corresponding to a data line, and the common electrode layer is arranged directly above the portion of the black matrix.

4 more elements

Dependencies are inferred from the claim text.

Color filter on array substrate and fabricating method thereof as well as a display device

Life of this patent

Color filter on array substrate and fabricating method thereof as well as a display device

Life of this patent

Abstract

Claims14