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Organic light-emitting diode pixel driving circuit, display panel and display device

A technology of pixel drive circuit and light-emitting diode, which is applied to static indicators, instruments, etc., and can solve the problem of uneven display of organic light-emitting diode display devices

Active Publication Date: 2016-01-06
WUHAN TIANMA MICRO ELECTRONICS CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a pixel driving circuit capable of compensating the threshold voltage drift and the power supply voltage drop of the driving thin film transistor, so as to solve the organic light emission caused by the process, module aging and voltage drop in the prior art. The problem of uneven display of the diode display device

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  • Organic light-emitting diode pixel driving circuit, display panel and display device
  • Organic light-emitting diode pixel driving circuit, display panel and display device
  • Organic light-emitting diode pixel driving circuit, display panel and display device

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Embodiment Construction

[0018] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited to each following embodiment.

[0019] Such as figure 1 As shown, the organic light emitting diode display panel according to the embodiment of the present invention includes an array substrate 10 , a timing control module, a scan driving module and a data driving module.

[0020] The array substrate 10 includes a plurality of pixel units 11 arranged in a matrix, and the pixel units 11 are scanned according to corresponding scan lines GL1(1) to GL1(n) and GL2(1) to GL2(n) provided by the scan driving module. The signals and corresponding data voltages supplied from the data driving module through the plurality of data lines DL1 to DLm emit light. To this end, the organic light emitting diode driving circuit in one pixel unit 11 includes an organic light emitting diode OLED and a plurality of transistor and capacitor m...

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Abstract

The invention provides an organic light-emitting diode pixel driving circuit comprising a pixel capacitor used for storing the received voltage and coupling the change value of the voltage on a first pole to a second pole thereof, a first transistor used for providing a reference voltage for the first pole of the pixel capacitor under the control of a first light emitting signal, and a third transistor and a fourth transistor used for transferring a data voltage to the second pole of the pixel capacitor under the control of a second scanning signal. The problem that image display is non-uniform as the driving currents for driving different organic light-emitting diodes to emit light are different when the organic light-emitting diodes receive the same image data voltage due to the threshold voltage drift of a driving transistor and the voltage drop of a high-level power source is overcome.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to an organic light emitting diode pixel drive circuit, a display panel and a display device. Background technique [0002] Organic light emitting diode display module (AMOLED) is one of the hot spots in the field of flat panel display device research today. Compared with liquid crystal display module, organic light emitting diode display module has low energy consumption, low production cost, self-illumination, wide viewing angle and fast response speed, etc. Advantages, at present, organic light-emitting diode display modules have begun to replace traditional liquid crystal display modules in display fields such as mobile phones, tablets, and digital cameras. Pixel drive circuit design is the core technical content of organic light-emitting diode display modules, which has important research significance. [0003] Organic light-emitting diode display modules can be divid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
CPCG09G3/3233G09G2300/0819G09G2300/0842G09G2300/0861G09G2320/0233G09G2320/045
Inventor 朱敏逾钱栋
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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