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US 12,118,906 B2Granted
Method for sensing display panel, and display panel
AssigneesHefei BOE Joint Technology Co., Ltd., Boe Technology Group Co., Ltd.
InventorsXiaolong Wei, Fei Yang, Song Meng, Jingbo Xu, Jianbo Xian
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Abstract
A method for sensing a display panel includes: sensing an electrical characteristic parameter of a driving transistor of a pixel circuit of a sub-pixel in an X-th row in a blank stage between an N-th frame and an (N+1)-th frame, wherein X is a random number, and both N and X are positive integers.
Claims17
A method for sensing a display panel, comprising:
- sensing an electrical characteristic parameter of a driving transistor of a pixel circuit of a sub-pixel in an X-th row in a blank stage between an N-th frame and an (N+1)-th frame;
- wherein both N and X are positive integers, and the X is a random number;
- wherein the sensing an electrical characteristic parameter of a driving transistor of a pixel circuit of a sub-pixel in an X-th row in a blank stage between an N-th frame and an (N+1)-th frame comprises:
- generating a sensing clock signal by using a random control signal;
- and
- generating, by a sensing driving circuit, a sensing control signal provided for the pixel circuit of the sub-pixel in the X-th row in the blank stage between the N-th frame and the (N+1)-th frame by using the sensing clock signal, a sensing starting signal, and an enable control signal;
- wherein the sensing clock signal, the sensing starting signal, and the enable control signal are pulse signals;
- a pulse width of a sensing pulse of the sensing starting signal is greater than a pulse width of a clock pulse of the sensing clock signal and is not greater than twice the pulse width of the clock pulse, and a pulse width of the enable control signal is greater than the pulse width of the sensing pulse.
5 more elements
A display panel, comprising a pixel array and a gate driver, wherein
- the pixel array comprises a plurality of sub-pixels, and at least one sub-pixel comprises a light emitting element and a pixel circuit that drives the light emitting element to emit light;
- the gate driver is configured to provide a sensing control signal for the pixel circuit of a sub-pixel in an X-th row by a sensing control line in a blank stage between an N-th frame and an (N+1)-th frame, to sense an electrical characteristic parameter of the driving transistor of the pixel circuit of the sub-pixel in the X-th row;
- wherein both N and X are positive integers, and the X is a random number;
- further comprising a timing controller, wherein
- the timing controller is configured to generate a sensing clock signal by using a random control signal, and provide the sensing clock signal for the gate driver;
- and
- the gate driver is configured to generate a sensing control signal provided for the pixel circuit of the sub-pixel in the X-th row in the blank stage between the N-th frame and the (N+1)-th frame by using the sensing clock signal, a sensing starting signal, and an enable control signal;
- wherein the sensing clock signal, the sensing starting signal, and the enable control signal are pulse signals;
- a pulse width of a sensing pulse of the sensing starting signal is greater than a pulse width of a clock pulse of the sensing clock signal and is not greater than twice the pulse width of the clock pulse, and a pulse width of the enable control signal is greater than the pulse width of the sensing pulse.
6 more elements
Dependencies are inferred from the claim text.