Pixel circuit and driving method thereof

Abstract

The invention discloses a pixel circuit and a driving method thereof. A first reset module writes a first reset voltage into a first electrode of a driving transistor and writes a second reset voltage into a second electrode of the driving transistor in a reset sub-stage of a light-emitting stage, so that in each reset sub-stage in the light-emitting stage, the potential of the first electrode of the driving transistor is reset to a first reset voltage, and the potential of the second electrode of the driving transistor is reset to a second reset voltage, so that the potential of the first electrode of the driving transistor is equal, the potential of the second electrode of the driving transistor is equal after each reset sub-stage and before the light-emitting sub-stage; therefore, the influence degrees of the first electrode potential and the second electrode potential of the driving transistor on the driving current generated by the driving transistor in different light-emitting sub-stages are consistent, the light-emitting intensity of the light-emitting module is consistent, the light-emitting brightness difference of the light-emitting module in different light-emitting sub-stages is reduced, and the visual effect is improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of display technology, and in particular to a pixel circuit and a driving method thereof. Background technique [0002] With the development of display technology, people have higher and higher requirements for display effects. [0003] In the pixel circuit of the prior art, it usually includes a driving transistor and a light-emitting control module for controlling the light-emitting device. In one frame, the light-emitting device is improved by providing a light-emitting control signal including a plurality of active level pulses to the light-emitting control module. The luminous frequency, thereby enhancing the visual effect of the human eye. [0004] However, under different effective level pulses of the light-emitting control signal, the potentials of the source node of the driving transistor in the pixel circuit will be different, and the potentials of the drain node of the driving transis...

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Problems solved by technology

[0004]However, under different effective level pulses of the light emission control signal, the source node potential of the driving transistor in the pixel circuit will be different, and the drain of the driving transistor in the pixel circuit will The potential of the nodes will also be different, resulting in different luminous brightness of the light-emitting device under different effective level pulses of the light-emitting control signal in each frame, which affects the display effect

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