Drive method for pixel circuit

Abstract

The invention discloses a drive method for a pixel circuit, and the drive method comprises N initialization stages and N data signal voltage writing-in stages in a displayed one-frame time period before a light emitting stage, wherein the i-th data signal voltage writing-in stage is after the i-th initialization stage, and before the (i+1)-th initialization stage, the N-th data signal voltage writing-in stage is after the N-th initialization stage, 1<=i<=N-1, and N is an integer which is greater than 1. At the initialization stage, an initialization module enables an initialization voltage tobe written into a gate electrode of a driving transistor. At the data signal voltage writing-in stage, a data signal voltage writing-in module enables a data signal voltage to be written into the gateelectrode of the driving transistor. A storage module is used for maintaining the gate voltage of the driving transistor. At the light emitting stage, the driving transistor generates a driving current to drive a light emitting element to emit light. According to the technical scheme provided by the embodiment of the invention improves the hysteresis effect of the transistor, and improves the display effect.

Description

technical field [0001] Embodiments of the present invention relate to the field of display technology, and in particular, to a driving method for a pixel circuit. Background technique [0002] Compared with liquid crystal displays, organic light-emitting displays have the advantages of low production cost, low energy consumption, self-illumination, wide viewing angle, and fast response speed. They are currently widely used in display fields such as mobile phones, PDAs, and digital cameras. A plurality of pixel circuits are arranged in the organic light emitting display panel. [0003] A pixel circuit generally includes a driving transistor, several switching transistors and storage capacitors, and the driving current generated by the driving transistor drives the organic light-emitting element to emit light for display. When the pixel displays many frames of black images, the drive transistor is in the cut-off state for a long time. At this time, because the gate potential ...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a driving method of a pixel circuit to improve the hysteresis effect of the driving transistor, solve the problem that the brightness cannot reach the target brightness value in the initial period when the black and white screen is switched during the display process, and improve the display effect

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