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US 11,538,430 B2Granted
Display device and inspection method therefor
AssigneeHkc Corporation Limited
InventorJunhong Cao
Life of this patent
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Abstract
This application discloses a display device and an inspection method. The display device includes a display panel and a control circuit board, the display panel includes a display region and switching devices, the switching devices are arranged between the display region and the control circuit board and the control circuit board is configured to drive the display panel.
Claims11
A display device, comprising:
- a display panel;
- and
- a control circuit board, configured to drive the display panel, wherein
- the display panel comprises:
- a first gate drive circuit and a second gate drive circuit, positioned on two sides of a display region of the display panel respectively, the first gate drive circuit and the second gate drive circuit being coupled to the control circuit board and configured to provide a row drive signal for the display region;
- and
- switching devices, arranged between the display region and the control circuit board, wherein
- the switching devices comprise a first switching device and a second switching device, the first switching device controls the first gate drive circuit whether to output the row drive signal or not to inspect whether there is a defect with the first gate drive circuit, and the second switching device controls the second gate drive circuit whether to output the row drive signal or not to inspect whether there is a defect with the second gate drive circuit;
- wherein the switching devices are positioned between the first and second gate drive circuits and the control circuit board;
- wherein the first switching device is arranged between the first gate drive circuit and the control circuit board, and the second switching device is arranged between the second gate drive circuit and the control circuit board;
- wherein the first switching device is electrically connected between the control circuit board and the first gate drive circuit, and the second switching device is electrically connected between the control circuit board and the second gate drive circuit;
- wherein each of the first switching device and the second switching device comprises a plurality of thin film transistors, wherein each of the plurality of thin film transistors of the first switching device comprises a gate electrode connected to an enable signal output from a first pin of the control circuit board, a source electrode connected to a second pin of the control circuit board, and a drain electrode connected to a corresponding pin of the first gate drive circuit;
- wherein each of the plurality of thin film transistors of the second switching device comprises a gate electrode connected to an enable signal output from a third pin of the control circuit board, a source electrode connected to a fourth pin of the control circuit board, and a drain electrode connected to a corresponding pin of the second gate drive circuit.
10 more elements
An inspection method for a display device, the display device comprising:
- a display panel;
- and
- a control circuit board, configured to drive the display panel, wherein
- the display panel comprises:
- a first gate drive circuit and a second gate drive circuit, positioned on two sides of a display region of the display panel respectively, the first gate drive circuit and the second gate drive circuit being coupled to the control circuit board and configured to provide a row drive signal for the display region;
- and
- switching devices, arranged between the display region and the control circuit board, wherein
- the switching devices comprise a first switching device and a second switching device, the first switching device controls the first gate drive circuit whether to output the row drive signal or not to inspect whether there is a defect with the first gate drive circuit, and the second switching device controls the second gate drive circuit whether to output the row drive signal or not to inspect whether there is a defect with the second gate drive circuit, wherein the switching devices are positioned between the first and second gate drive circuits and the control circuit board, wherein the first switching device is arranged between the first gate drive circuit and the control circuit board, and the second switching device is arranged between the second gate drive circuit and the control circuit board;
- wherein the first switching device is electrically connected between the control circuit board and the first gate drive circuit, and the second switching device is electrically connected between the control circuit board and the second gate drive circuit;
- wherein each of the first switching device and the second switching device comprises a plurality of thin film transistors, wherein each of the plurality of thin film transistors of the first switching device comprises a gate electrode connected to an enable signal output from a first pin of the control circuit board, a source electrode connected to a second pin of the control circuit board, and a drain electrode connected to a corresponding pin of the first gate drive circuit;
- wherein each of the plurality of thin film transistors of the second switching device comprises a gate electrode connected to an enable signal output from a third pin of the control circuit board, a source electrode connected to a fourth pin of the control circuit board, and a drain electrode connected to a corresponding pin of the second gate drive circuit;
- wherein
- the inspection method comprises:
- controlling the first switching device to be turned on and controlling the second switching device to be turned off;
- detecting an output signal of the first gate drive circuit;
- controlling the first switching device to be turned off and controlling the second switching device to be turned on;
- detecting an output signal of the second gate drive circuit;
- and
- outputting an inspection result.
16 more elements
Dependencies are inferred from the claim text.