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Amoled pixel driving circuit and amoled pixel driving method

A pixel drive circuit and electrode technology, applied in instruments, static indicators, etc., can solve problems such as unstable current flowing through organic light-emitting diodes, achieve the effects of improving display effects, reducing power consumption, and avoiding unnecessary light emission

Active Publication Date: 2018-05-01
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is also to provide an AMOLED pixel driving method, which can effectively compensate the threshold voltage of the driving thin film transistor, solve the problem of unstable current flowing through the organic light emitting diode caused by threshold voltage drift, and make the organic light emitting diode Uniform luminous brightness, improving the display effect of the picture

Method used

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  • Amoled pixel driving circuit and amoled pixel driving method
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Embodiment Construction

[0052] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0053] see figure 2 , the present invention provides an AMOLED pixel drive circuit, comprising: 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 capacitor C1, and organic light emitting diode D;

[0054] The specific connection method of each element is: the gate of the first thin film transistor T1 is electrically connected to the first node G, the source is connected to the high voltage OVDD of the power supply, and the drain is electrically connected to the source of the fourth thin film transistor T4 , the gate of the second thin film transistor T2 is connected to the first scan control ...

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Abstract

Disclosed are an AMOLED pixel driving circuit and an AMOLED pixel driving method. The AMOLED pixel driving circuit uses a pixel driving circuit of a 6T1C structure and is collocated with a specific driving timing sequence. The present invention can effectively compensate for a threshold voltage of a driving thin film transistor, so as to stabilize a current flowing through an organic light-emitting diode, thereby ensuring uniform light-emitting brightness of the organic light-emitting diode, and improving the display effect of pictures; and can also enable the organic light-emitting diode to emit light only during a display light-emitting phase, thereby avoiding unnecessary light emission of the organic light-emitting diode, and reducing power consumption.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an AMOLED pixel driving circuit and an AMOLED pixel driving method. Background technique [0002] Organic light emitting diode (Organic Light Emitting Display, OLED) display device has self-illumination, low driving voltage, high luminous efficiency, short response time, high definition and contrast, nearly 180° viewing angle, wide operating temperature range, and can realize flexible display and With many advantages such as large-area full-color display, it is recognized by the industry as a display device with the most potential for development. [0003] OLED display devices can be divided into passive matrix OLED (Passive Matrix OLED, PMOLED) and active matrix OLED (Active Matrix OLED, AMOLED) two categories according to the driving method, namely direct addressing and thin film transistor (Thin Film Transistor, TFT) matrix addressing two types. Among them, AMOLED has pixel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3233
CPCG09G3/3233
Inventor 陈小龙温亦谦周明忠
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD