Pixel driving circuit and organic light emitting diode display

A pixel drive circuit and electrode technology, applied in static indicators, instruments, etc., can solve the problems of OLED drive current change, poor display of OLED display, affecting display picture quality, etc., and achieve the effect of eliminating threshold voltage drift

Active Publication Date: 2020-01-17
WUHAN 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

Due to long-time operation, the threshold voltage V of the driving TFT T2 th Drift will occur, so it will cause the driving current of OLED to change, which will cause poor display of OLED display, which will affect the quality of display screen

Method used

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  • Pixel driving circuit and organic light emitting diode display
  • Pixel driving circuit and organic light emitting diode display
  • Pixel driving circuit and organic light emitting diode display

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Embodiment Construction

[0023] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. Rather, the embodiments are provided to explain the principles of the invention and its practical application, thereby enabling others skilled in the art to understand the invention for various embodiments and with various modifications as are suited to particular intended uses.

[0024] In the drawings, the thicknesses of layers and regions are exaggerated for clarity. Like reference numerals refer to like components throughout the specification and drawings.

[0025] figure 2 is a structural diagram of an OLED display according to an embodiment of the present invention.

[0026] refer to figure 2 , the organic light emitting diode display according to the embodiment of the present invention inc...

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PUM

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Abstract

A pixel driving circuit and organic light-emitting diode (OLED) display apparatus having the pixel driving circuit is provided. The pixel driving circuit with 6T1C pixel structure effectively compensates the threshold voltage of the driving transistor, which drives the OLED display apparatus, to prevent the current flows through the OLED from being correlated with the threshold voltage of the driving transistor, so that the poor display image caused due to the threshold voltage shifting of the driving transistor is eliminated.

Description

technical field [0001] The invention belongs to the technical field of organic electroluminescence, and in particular relates to a pixel driving circuit and an organic light emitting diode display. Background technique [0002] In recent years, organic light-emitting diode (Organic Light-Emitting Diode, OLED) display has become a very popular emerging flat-panel display product at home and abroad, because OLED display has self-illumination, wide viewing angle, short response time, high luminous efficiency, wide color gamut , low operating voltage, thin thickness, large-size and flexible displays can be produced, and the manufacturing process is simple, and it also has the potential of low cost. [0003] In an OLED display, a transistor (TFT) is usually used together with a capacitor to store signals to control the brightness grayscale performance of the OLED. In order to achieve the purpose of constant current driving, each pixel needs at least two TFTs and a storage capaci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3233
CPCG09G3/3233G09G3/3291G09G3/3659G09G2300/0819G09G2300/0842G09G2300/0861G09G2310/0251G09G2320/045G09G3/3258G09G3/3266G09G2310/0216
Inventor 侯学顺李光
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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