Pixel driving circuit and display panel

A pixel driving circuit and driving transistor technology, applied in static indicators, instruments, etc., can solve the problem of small threshold voltage compensation range, and achieve the effects of improving brightness and life, simple compensation structure, and low operation difficulty

Active Publication Date: 2020-06-19
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the embodiment of the present application is to provide a pixel driving circuit and a display panel, which can solve the technical problem that the compensation structure of the existing pixel driving circuit realizes a small compensation range of the threshold voltage

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  • Pixel driving circuit and display panel

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Embodiment Construction

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this 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.

[0035] The transistors used in all embodiments of this application can be thin film transistors or field effect transistors or other devices with the same characteristics. Since the source and drain of the transistors used here are symmetrical, their source and drain can be interchanged. of. In the embodiment of the present application, in order to distinguish the two poles of the transistor except the gate, one pole is called the source, and the other pole is called the drain. ...

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Abstract

The embodiment of the invention provides a pixel driving circuit and a display panel. According to the pixel driving circuit, the pixel driving circuit of the 4T1C structure is adopted to effectivelycompensate for the threshold voltage of the driving transistor in each pixel, the compensation structure of the pixel driving circuit is simple, and the operation difficulty is low; and the thresholdvoltage of the driving transistor is compensated through the two compensation stages, so that the compensation range of the threshold voltage is relatively large, the brightness of the display panel is improved, and the service life of the display panel is prolonged.

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] The OLED (Organic Light Emitting Diode, organic light emitting device) display panel has the advantages of high brightness, wide viewing angle, fast response speed, low power consumption, etc., and has been widely used in the field of high-performance display. Among them, in the OLED display panel, the pixels are arranged in a matrix including multiple rows and columns, and each pixel is usually composed of two transistors and a capacitor, commonly known as 2T1C circuit, but the transistor has the problem of threshold voltage drift, so , the OLED pixel driving circuit needs a corresponding compensation structure. At present, the compensation structure of the OLED pixel driving circuit realizes a relatively small compensation range of the threshold voltage. Contents of the invention [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32G09G3/3225
CPCG09G3/32G09G3/3225
Inventor 郑林雕王振岭
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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