Pixel circuit, driving method thereof, and display device

A technology of a pixel circuit and a driving method, applied in the display field, can solve problems such as deviation and poor display effect of a display device

Active Publication Date: 2021-03-16
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0038] The transistors used in all embodiments of the present invention may be triodes, thin film transistors or field effect transistors or other devices with the same characteristics. In the embodiment of the present invention, in order to distinguish the two poles of the transistor except the control pole, one pole is called the first pole, and the other pole is called the second pole.

[0039] In actual operation, when the transistor is a triode, t...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3225
CPCG09G3/3225G09G2320/0233
Inventor 徐映嵩汪杨鹏代伟男柴媛媛王旭聪
Owner BOE TECH GRP CO LTD
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