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

Claim 17:
18. The crack detection method according to claim 17, wherein the display panel comprises n columns of sub-pixels and n data lines located in the display region, and the n columns of sub-pixels are connected with the n data lines, the display panel further comprises a first control unit, a second control unit, and a test control terminal located in the first region, the first control unit is connected with the test control terminal, the seventh endpoint, and an i-th data line, and the second control unit is connected with the test control terminal, the eighth endpoint, and a j-th data line, wherein i and j are both natural numbers, 1≤i≤n, 1≤j≤n, i and j are different from each other,
applying a detection signal to the ninth endpoint, receiving a second output signal output from the seventh endpoint, and determining whether a position where the third series line is located cracks according to the second output signal, comprises: applying a first level signal to the ninth endpoint, applying a turn-on signal to the test control terminal, and receiving, by the i-th data line, the second output signal output from the seventh endpoint, wherein when an i-th column of sub-pixels is in a first light-emitting state, the position where the third series line is located does not crack, and when the i-th column of sub-pixels is in a second light-emitting state, the position where the third series line is located cracks,
applying a detection signal to the tenth endpoint, receiving a fourth output signal output from the eighth endpoint, and determining whether a position where the fourth series line is located cracks according to the fourth output signal, comprises: applying a first level signal to the tenth endpoint, applying a turn-on signal to the test control terminal, and receiving, by the j-th data line, the fourth output signal output from the eighth endpoint, wherein when a j-th column of sub-pixels is in a first light-emitting state, the position where the fourth series line is located does not crack, and when the j-th column of sub-pixels is in a second light-emitting state, the position where the fourth series line is located cracks.