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

Claim 19:
20. The crack detection method according to claim 19, 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, a fourth control unit, a fifth control unit, and a test control terminal located in the first region, wherein 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, the fourth control unit is connected with the test control terminal, the first endpoint, and an x-th data line, and the fifth control unit is connected with the test control terminal, the second endpoint, and a y-th data line, wherein i, j, x, and y are all natural numbers, 1≤i≤n, 1≤j≤n, 1≤x≤n, 1≤y≤n, and i, j, x, and y are different from each other,
receiving the first output signal of the first endpoint, and determining whether the position where the first series line is located cracks according to the first output signal, comprises: receiving, by x-th data line, the first output signal output from the first endpoint, wherein when an x-th column of sub-pixels is in a first light-emitting state, the position where the first series line is located does not crack, and when the x-th column of sub-pixels is in a second light-emitting state, the position where the first series line is located cracks,
receiving the third output signal of the second endpoint, and determining whether the position where the second series line is located cracks according to the third output signal, comprises: receiving, by the y-th data line, the third output signal output from the second endpoint, wherein when a y-th column of sub-pixels is in a first light-emitting state, the position where the second series line is located does not crack, and when the y-th column of sub-pixels is in a second light-emitting state, the position where the second series line is located cracks,
receiving the second output signal of the seventh endpoint, and determining whether the position where the third series line is located cracks according to the second output signal, comprises: 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, and
receiving the fourth output signal of the eighth endpoint, and determining whether the position where the fourth series line is located cracks according to the fourth output signal, comprises: 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.