A pixel driving circuit, its driving method, and a display device
A pixel drive circuit and sub-circuit technology, applied to static indicators, instruments, etc., can solve problems such as flickering of display devices, long light-emitting time of light-emitting elements, leakage of drive transistor gates, etc., and improve the flickering and improvement Short-term afterimage problem, the effect of reducing the leakage current
Active Publication Date: 2021-10-22
BOE TECH GRP CO LTD
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Problems solved by technology
[0004] The object 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 light-emitting time of the light-emitting element is long, causing the pixel driving circuit to The gate leakage of the driving transistor in the battery is serious, which makes the display device prone to flickering problems when displaying
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[0064] 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.
[0065] 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:
[0066] A driving transistor DT (that is, a driving sub-circuit 3), the second pole of the driving transistor DT is connected to the light emitting element EL;
[0067] The power control sub-circuit 1 is respectively connected to the first control terminal EM, the power signal input terminal ELVDD and the first pole of the driving transistor DT;
[0068] The data writing sub-circuit 2 is respectively connected to the first common node N1, the corresponding row gate line GT, the corresponding column data line DA and the gate of the driving ...
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The invention provides a pixel driving circuit, a driving method thereof, and a display device, which relate to the field of display technology, and are intended to solve the problem of serious gate leakage of a driving transistor when the pixel driving circuit is driven at a low frequency. In the pixel driving circuit, under the control of the row gate line, the data writing sub-circuit controls to turn on or off the connection between the column data line and the first common node, and controls to turn on or off the connection between the first common node and the first common node. The connection between the gates of the drive transistors; under the control of the reset signal line, the first reset control subcircuit controls the connection between the reference voltage input terminal and the second common node, and controls the connection between the reference voltage input terminal and the second common node. Open the connection between the second common node and the gate of the drive transistor; the first end of the third capacitor unit is connected to the first common node and / or the second common node, and the second end of the third capacitor unit is connected to the gate of the drive transistor first pole connection. 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, due to the long light emitting time of the light-emitting element, the gate leakage ...
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IPC IPC(8): G09G3/3233
CPCG09G3/3233G09G3/3241G09G2300/0819G09G2300/0852G09G2310/0251G09G2310/061G09G2310/0216G09G2320/0247G09G2320/0204G09G2320/0233G09G2320/0257G09G3/3258G09G2300/0426G09G2320/043
Inventor 董甜
Owner BOE TECH GRP CO LTD