Pixel circuit and display panel

Abstract

The invention discloses a pixel circuit and a display panel, and a light-emitting control module of the pixel circuit is used for controlling a light-emitting module to emit light according to a driving signal output by a driving module according to a signal on a light-emitting control signal line. A first initialization module is used for writing initialization voltage into the control end of the driving module according to a signal on a first scanning line, the first end of the compensation module is connected with the first end of the driving module, and the second end of the compensation module is connected with the control end of the driving module through the electric leakage suppression module, and a compensation module is used for performing threshold compensation on the driving module according to the signal on the second scanning line, an electric leakage suppression module is used for suppressing electric leakage of the storage module. The storage module in the embodiment of the invention leaks electricity only through the electricity leakage suppression module, that is, only one electricity leakage path exists, so that the electricity leakage path and the magnitude of leakage current are reduced, the voltage stability of the control end of the driving module is favorably maintained, and the phenomenon that the light-emitting module flickers when emitting light due to the current change of the driving module 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 display panel. Background technique [0002] With the increasing demand for longer standby time of display products, low-frequency display is the general trend. Existing display panels generally include pixel circuits, and the pixel circuits include driving transistors, which are used to drive light-emitting devices to emit light, so as to realize image display. [0003] Low-temperature polysilicon transistors have the advantages of high mobility, strong driving capability, and low process cost, so they are widely used as driving transistors. However, the leakage current of the low-temperature polysilicon transistor is large. When displaying at a low frequency, the light-emitting time period in one frame becomes longer, which increases the leakage time of the transistor in the pixel circuit, and easily causes the gate voltage of t...

AI Technical Summary

Problems solved by technology

However, the leakage current of the low-temperature polysilicon transistor is large. When displaying at a low frequency, the light-emitting time period in one frame becomes longer, which increases the leakage time of the transistor in the pixel circuit, and easily causes the gate voltage of the driving transistor in the pixel circuit to be unstable. Caused the problem of screen flickering under low refresh rate working conditions

Images