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A kind of amoled pixel circuit

A technology of pixel circuits and thin film transistors is applied in the field of AMOLED pixel circuits to achieve the effects of improving pixel electrical characteristics, increasing the number of gates, and reducing leakage current

Active Publication Date: 2020-11-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose an AMOLED pixel circuit and its driving method for the problems of flicker and crosstalk caused by leakage current in the background technology

Method used

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  • A kind of amoled pixel circuit
  • A kind of amoled pixel circuit
  • A kind of amoled pixel circuit

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0027] Such as figure 2 As shown, it is a schematic structural diagram of an AMOLED pixel circuit provided in the embodiment; it includes a first thin film transistor T1, a second thin film transistor T2, a third thin film transisto...

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Abstract

An AMOLED pixel circuit belongs to the field of display technology. The AMOLED pixel circuit includes a first thin film transistor T1, a second thin film transistor T2, a third thin film transistor T3, a fourth thin film transistor T4, a fifth thin film transistor T5, a sixth thin film transistor T6, a seventh thin film transistor T7, a storage capacitor C and a light-emitting device, characterized in that the first thin film transistor and the second thin film transistor are tri-gate transistors, the first thin film transistor is a "mouth"-shaped wiring, and the second thin film transistor is a fork-shaped wiring. The present invention optimizes the layout of the first thin film transistor and the second thin film transistor, and adopts "cross-shaped wiring" or "forked wiring" to effectively increase the number of thin film transistors connected to drive TFT gates in the same space The number of gates reduces the leakage current and improves the electrical characteristics of the pixel.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an AMOLED pixel circuit. Background technique [0002] AMOLED (Active-matrix organic light-emitting diode, active matrix organic light-emitting diode or active matrix organic light-emitting diode) is one of the hot spots in the field of display research today. Compared with liquid crystal display (Liquid Crystal Display, LCD) , which has the advantages of low energy consumption, low production cost, self-illumination, wide viewing angle and fast response speed. At present, AMOLED displays have begun to replace traditional LCD displays in display fields such as mobile phones, PDAs, and digital cameras. Among them, pixel circuit design is the core technical content of AMOLED display, which has important research significance. [0003] Unlike LCD, which uses a stable voltage to control brightness, AMOLED is current-driven and requires a stable current to control light emission. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3233G09G3/3266G09G3/3291
Inventor 尚飞向勇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA