Display substrate, display panel and display device

Abstract

The invention discloses a display substrate, a display panel and a display device. The thickness uniformity of an alignment layer is improved, the image brightness nonuniformity phenomenon of the display device is improved, and the display quality of the display device is improved. The display substrate is divided into a display area and a nondisplay area surrounding the display area, the display substrate comprises an underlayer substrate and an insulating layer, a drainage wire layer and the alignment layer which are arranged in sequence in the direction far away from the underlayer substrate, the insulating layer and the alignment layer cover the display area and extend to the nondisplay area, and the drainage wire layer is located in the nondisplay area, wherein a groove is formed in the portion, in the nondisplay area, of the insulating layer; the drainage wire layer is located on the side, close to the display area, of the groove and comprises multiple drainage wires, and the first end of each drainage wire extends to the groove; the alignment layer comprises a body part and a drain extension part, the body part covers the second ends of the drainage wires, and the drain extension part extends to the groove along the drain wires.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display substrate, a display panel and a display device. Background technique [0002] A display panel of a liquid crystal display generally includes an array substrate, a color filter substrate and a liquid crystal layer between them. Usually, the surface of the array substrate and the color filter substrate facing the liquid crystal layer is provided with an alignment layer. The main function of the alignment layer is to provide a pre-tilt angle for the liquid crystal molecules, so that the arrangement of the liquid crystal molecules in the initial state shows a certain order. [0003] With the continuous development of display technology, users have higher and higher requirements on display devices. The defect of the above-mentioned prior art is that the thickness of the alignment layer is not uniform, which leads to non-uniform brightness of the screen of the disp...

AI Technical Summary

Problems solved by technology

The defect of the above-mentioned prior art is that the thickness of the alignment layer is uneven, which leads to uneven brightness of the screen of the display device.

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