Display substrate, manufacturing method thereof, crack detection method and display device

Abstract

The invention discloses a display substrate, a manufacturing method thereof, a crack detection method and a display device, relates to the technical field of display, and aims at solving the problemsthat an existing crack detection mode is complex in operation and wiring difficulty in an edge area of a display screen is easily increased. The display substrate comprises a pixel unit and a data signal line, wherein the data signal line is used for writing a data voltage signal into the pixel unit. The display substrate further comprises an electrostatic discharge circuit, and the electrostaticdischarge circuit comprises a first electrostatic discharge line and a second electrostatic discharge line; a first electrostatic discharge sub-circuit which is connected with the data signal line andthe first electrostatic discharge line, wherein a connecting line included in the first electrostatic discharge sub-circuit is reused as a crack detection line, and the crack detection line is located in a peripheral area, surrounding the display area, in the display substrate and extends along the edge of the display substrate. The first electrostatic discharge sub-circuit is used for conductingthe connection between the data signal line and the first electrostatic discharge line when the crack detection line is broken in a detection period. The display substrate provided by the invention is used for displaying.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display substrate and a manufacturing method thereof, a crack detection method, and a display device. Background technique [0002] With the continuous development of display technology, the application of organic light emitting diode display is more and more extensive. During the preparation process of the organic light emitting diode display, cracks are prone to occur in the edge area of ​​the display, and the cracks are easy to affect the reliability of the display. make an impact. In the prior art, in order to ensure the reliability of the manufactured display screen, crack detection lines and detection circuits are generally arranged in the edge area of ​​the display screen, and whether there is a crack in the edge area of ​​the display screen is determined through the cooperation of the detection circuit and the crack detection line. [0003] Although the above method c...

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Problems solved by technology

[0004] The object of the present invention is to provide a display substrate and its manufacturing method, a crack detection method, and a display device, which are used to solve the problem that the existing crack detection method is complicated to operate and easily increases the difficulty of wiring in the edge area of ​​the display screen

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