Patent ID: 11922838
Assignee: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 16:
17. A crack detection method of a display panel, wherein the display panel comprises a display region and a peripheral region located at a periphery of the display region, the display panel comprises a substrate, a first insulating structure layer located on a side of the substrate, a first crack detection line located on a side of the first insulating structure layer away from the substrate, a second insulating structure layer located on a side of the first crack detection line away from the substrate, and a second crack detection line located on a side of the second insulating structure layer away from the substrate,
the peripheral region comprises a first region provided with a bonding region, a second region opposite to the first region, and a third region and a fourth region connecting the first region and the second region and opposite to each other,
the first crack detection line comprises a first endpoint and a second endpoint located in the first region, and the first crack detection line is disposed in the first region, the second region, the third region, and the fourth region around the display region,
the second crack detection line comprises a third series line and a fourth series line, wherein the third series line comprises a seventh endpoint and a ninth endpoint located in the first region, the third series line is located in the first region and the third region, the fourth series line comprises an eighth endpoint and a tenth endpoint located in the first region, and the fourth series line is located in the first region and the fourth region,
wherein the crack detection method comprises:
applying a detection signal to the first endpoint, receiving a first output signal output from the second endpoint, and determining whether a position where the first crack detection line is located cracks according to the first output signal;
applying detection signals to the ninth endpoint and the tenth endpoint, receiving a second output signal output from the seventh endpoint and a fourth output signal output from the eighth endpoint, determining whether a position where the third series line is located cracks according to the second output signal, and determining whether a position where the fourth series line is located cracks according to the fourth output signal.