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Pixel driving circuit and display panel

A pixel drive circuit and plate technology, applied in static indicators, instruments, etc., can solve the problems of driving current changes in thin film transistors, uneven brightness of display panels, easy drift of threshold voltage, etc., to achieve compensation of threshold voltage drift, improve display quality effects

Active Publication Date: 2022-04-26
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the field of AMOLED display, with the prolongation of the use time of the display panel, in the pixel drive circuit of the display panel, the threshold voltage of the driving thin film transistor is easy to drift, resulting in the change of the driving current of the driving thin film transistor, which in turn causes the brightness of the display panel. Unevenness, poor display, and further affect the quality of the display panel

Method used

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  • Pixel driving circuit and display panel
  • Pixel driving circuit and display panel
  • Pixel driving circuit and display panel

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0023] Embodiments of the present application provide a pixel driving circuit and a display panel. Each will be described in detail below. It should be noted that the description sequence of the following embodiments is not intended to limit the preferred sequence of the embodiments. In addition, in the description of the present application, the term "including" means "including but not limited to". The terms first, second, third, etc. are used for designation only and do not impose numerica...

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Abstract

Embodiments of the present application provide a pixel driving circuit and a display panel, the pixel driving circuit further includes a compensation module; the compensation module includes a fourth thin film transistor, a first capacitor, and a second capacitor; the source of the fourth thin film transistor One of the electrode and the drain is electrically connected to the gate of the driving thin film transistor; the first plate of the first capacitor is electrically connected to the gate of the driving thin film transistor, and the second plate is electrically connected to the gate of the driving thin film transistor. is electrically connected to one of the source and drain of the driving thin film transistor; the third plate of the second capacitor is electrically connected to the second plate, and the fourth plate is electrically connected to the second power supply voltage terminal. The pixel driving circuit and the display panel provided by the embodiments of the present application can effectively compensate the threshold voltage drift of the driving thin film transistor, thereby improving the display quality of the display panel applied to the pixel driving circuit.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a pixel driving circuit and a display panel. Background technique [0002] Active Matrix / Organic Light Emitting Diode (AMOLED) display is a display technology used in TVs and mobile devices. It is sensitive to power consumption due to its low power consumption, low cost, and large size. It has broad application prospects in portable electronic devices. [0003] At present, in the field of AMOLED display, with the prolongation of the use time of the display panel, in the pixel drive circuit of the display panel, the threshold voltage of the driving thin film transistor is easy to drift, resulting in the change of the driving current of the driving thin film transistor, which in turn causes the brightness of the display panel. Unevenness, poor display, and further affect the image quality of the display panel. [0004] Therefore, how to improve the existing pixel drivi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3208G09G3/3233G09G3/3291
CPCG09G3/3208G09G3/3233G09G3/3291G09G2320/0233
Inventor 张留旗
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD