Pixel circuit, driving method thereof, and display device

Abstract

The invention provides a pixel circuit, a driving method thereof and a display device, and the pixel circuit comprises a data writing sub-circuit which is used for controlling a voltage signal on a data line to be written into a control end of a driving sub-circuit under the control of a data writing control signal provided by a data writing control line; a light-emitting control sub-circuit whichis used for controlling the first end of the driving sub-circuit to be communicated with the light-emitting element under the control of a light-emitting control signal provided by a light-emitting control line, the second end of the driving sub-circuit is connected with the power supply voltage end, and the driving sub-circuit is used for controlling the first end of the driving sub-circuit to be communicated with the second end of the driving sub-circuit under the control of the potential of the control end of the driving sub-circuit; an energy storage sub-circuit which is connected with the control end of the driving sub-circuit, the first end of the driving sub-circuit and the light-emitting control line and used for controlling the potential of the first end of the driving sub-circuit. According to the pixel circuit, the driving method thereof and the display device, the display effect of the display device can be improved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel circuit, a driving method thereof, and a display device. Background technique [0002] In recent years, thanks to the excellent display effect of Active-Matrix Organic Light-Emitting Diode (AMOLED) displays, the AMOLED industry at home and abroad has developed rapidly, and various pixel circuits have been developed one after another. However, the excimer laser annealing (Excimer Laser Annel, referred to as ELA) and doping (Doping) processes used in actual production cannot guarantee good uniformity of thin film transistors (Thin Film Transistor, referred to as TFT), so there is a threshold voltage Vth deviation phenomenon. [0003] The deviation of the threshold voltage Vth will lead to poor brightness uniformity of each pixel during the light-emitting phase of the pixel, resulting in the problem of poor display effect of the display device. Contents of the in...

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Problems solved by technology

[0004] Embodiments of the present invention provide a pixel circuit, its driving method, and a display device, so as to solve the problem in the prior art that the display effect of the display device is not good due to the deviation of the threshold voltage Vth of the TFT.

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