Pixel driving circuit and driving method thereof, display panel and display device

Abstract

The invention provides a pixel driving circuit and a driving method thereof, a display panel and a display device, and relates to the technical field of display, the pixel driving circuit comprises a driving transistor, a light-emitting element and at least one switch transistor module; the driving transistor is used for driving the light-emitting element. The gate of the driving transistor is connected with the first node. The switch transistor module comprises a first transistor unit and a second transistor unit which are connected in parallel, one end of the first transistor unit is connected with the first node, and one end of the second transistor unit is connected with the first node; when the switch transistor module jumps from the on state to the off state, a first leakage current potential of the first transistor unit to the first node is opposite to a second leakage current potential of the second transistor unit to the first node; through the offset between the second leakage current and the first leakage current, the influence of the leakage current on the potential of the first node is reduced or eliminated, so that the stable light-emitting effect of the light-emitting element is ensured, and the screen shaking phenomenon of the corresponding display panel is avoided.

Description

technical field [0001] The present invention relates to the field of display technology, and more particularly, to a pixel driving circuit and a driving method thereof, a display panel and a display device. Background technique [0002] Today, with the development of the information society, the requirements for displays that represent information are also getting higher and higher. Therefore, users have higher and higher demands for flat panel displays with small size, light weight and good display effect. [0003] As personal devices become more prevalent, portable and / or wearable devices are being actively developed, and in order to apply a display device to a portable and / or wearable device, the device needs to have low power consumption; however, using the so far developed technology, obtaining displays with excellent low-power performance is limited. For example, in the prior art, in the case of low-frequency display of a display product, the waveform brightness of t...

AI Technical Summary

Problems solved by technology

[0003] As personal devices become more prevalent, portable and / or wearable devices are being actively developed, and in order to apply a display device to a portable and / or wearable device, the device needs to feature low power consumption; however, using the so far developed technology to obtain displays with excellent low-power performance are limited

For example, in the prior art, in the case of low-frequency display of display products, there is a problem that the waveform brightness of pixels drops downward within one frame, or the waveform brightness of pixels rises upward within one frame, resulting in flickering of the display screen, etc. Problems that affect user experience

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