Pixel circuit, display panel, display device, and driving method
AssigneesOrdos Yuansheng Optoelectronics Co., Ltd., Boe Technology Group Co., Ltd.
InventorsYi Zhang, Kai Zhang, Minghua Xuan, Young Yik Ko, Lujiang Huangfu
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Abstract
A pixel circuit, a display panel, a display device, and a driving method. The pixel circuit includes a light emitting element, a driving transistor, a light emitting control circuit, a reset circuit, a threshold compensation circuit, a first data write circuit, and an initializing circuit. The reset circuit includes a first transistor, the first data write circuit includes a third transistor, and a channel length-width ratio of the first transistor is greater than a channel length-width ratio of the third transistor.
Claims20
A pixel circuit, comprising:
- a light emitting element, comprising a first electrode;
- a driving transistor, comprising a gate electrode, wherein the driving transistor is coupled to a first supply voltage, and the driving transistor is configured to drive the light emitting element to emit light according to a voltage of the gate electrode of the driving transistor;
- a light emitting control circuit, configured to receive a light emitting control signal and control a connection between the light emitting element and the driving transistor to be turned on or off according to the light emitting control signal;
- a reset circuit, configured to receive a reset control signal and write a reset voltage into the gate electrode of the driving transistor according to the reset control signal;
- a threshold compensation circuit, configured to receive a first scanning signal and write a compensating voltage into the gate electrode of the driving transistor according to the first scanning signal, wherein the compensating voltage comprises a threshold voltage of the driving transistor;
- a first data write circuit, configured to receive the first scanning signal and a data signal and write the data signal into the driving transistor according to the first scanning signal;
- an initializing circuit, configured to write an initializing voltage into the first electrode of the light emitting element,
- wherein the reset circuit comprises a first transistor, and the first data write circuit comprises a third transistor, and a channel length-width ratio of the first transistor is greater than a channel length-width ratio of the third transistor.
Dependencies are inferred from the claim text.