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A pixel driving circuit, its driving method, and a display device

A technology of pixel driving circuit and driving sub-circuit, applied in static indicators, instruments, etc., can solve the problems such as flickering of display devices and gate leakage of driving transistors.

Active Publication Date: 2021-09-14
BOE TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide a pixel driving circuit, its driving method, and a display device, which are used to solve the problem that in the existing display device, when the pixel driving circuit is driven at a low frequency, the gate leakage of the driving transistor in the pixel driving circuit is serious, causing the The display device is prone to flickering problems when displaying

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  • A pixel driving circuit, its driving method, and a display device
  • A pixel driving circuit, its driving method, and a display device
  • A pixel driving circuit, its driving method, and a display device

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Embodiment Construction

[0061] In order to further illustrate the pixel driving circuit, its driving method, and the display device provided by the embodiments of the present invention, a detailed description will be given below in conjunction with the accompanying drawings.

[0062] see figure 1 and figure 2 , an embodiment of the present invention provides a pixel driving circuit for driving a light-emitting element EL, and the pixel driving circuit includes:

[0063] A driving sub-circuit 3, the driving sub-circuit 3 includes a driving transistor DT, the second pole of the driving transistor DT is connected to the light emitting element EL;

[0064] A storage sub-circuit 4, the first end of the storage sub-circuit 4 is connected to the gate of the driving transistor DT (ie node G), and the second end of the storage sub-circuit 4 is connected to the power signal input terminal ELVDD;

[0065] The power control sub-circuit 1 is respectively connected to the first control terminal EM, the power si...

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Abstract

The present invention provides a pixel driving circuit, its driving method, and a display device, and relates to the field of display technology. In order to solve the problem that the driving transistor gate leakage in the pixel driving circuit is serious when the pixel driving circuit is driven at a low frequency, it is easy for the display device to display There is a flickering problem. The first reset subcircuit included in the pixel driving circuit is used to control the connection between the gate of the driving transistor and the common node, and control the connection between the common node and the common node to be turned on or off under the control of the reset control terminal. The connection between the first initialization voltage input terminals; it is also used to control on or off the connection between the common node and the second initialization voltage input terminal under the control of the first control terminal; the input of the second initialization voltage input terminal A difference between the potential of the second initialization signal and the potential of the gate of the driving transistor during the light-emitting period is smaller than the threshold. The pixel driving circuit provided by the present invention is used to drive the light emitting element to emit light.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving circuit, a driving method thereof, and a display device. Background technique [0002] AMOLED (Active-matrix Organic Light-Emitting Diode, active-matrix organic light-emitting diode) display device has many advantages such as self-luminescence, ultra-thin, fast response speed, high contrast ratio, wide viewing angle, etc., and it is a display device that has received widespread attention at present. . [0003] This AMOLED display device includes a plurality of pixel driving circuits and a plurality of light emitting elements, and the pixel driving circuits are used to drive corresponding light emitting elements to emit light, thereby realizing the display function of the AMOLED display device. However, when the existing pixel driving circuit is driven at a low frequency, the gate leakage of the driving transistor in the pixel driving circuit is serious, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3225
CPCG09G3/3225G09G3/3233G09G2300/0819G09G2300/0842G09G2320/0247G09G2300/0861G09G2310/0251G09G3/3266G09G2330/028G09G2310/08G09G2320/0233
Inventor 王博
Owner BOE TECH GRP CO LTD
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