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AMOLED pixel driving circuit, pixel driving method and display panel

一种像素驱动电路、电路节点的技术，应用在静态指示器、仪器等方向，能够解决数据丢失、数据电压难以稳定存储、产品品质影响等问题，达到防止负偏、防止数据丢失、提高显示效果和品质的效果

Inactive Publication Date: 2020-06-09
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, large-size AMOLED panel pixel circuits generally use external compensation circuits represented by 3T1C, etc. The disadvantage of this type of circuit is that if the threshold voltage of the switching TFT of the panel is negatively biased, the data voltage cannot be stably stored in the storage capacitor, and the data will gradually be lost. , resulting in screen flickering macroscopically, and the product quality is seriously affected

Method used

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  • AMOLED pixel driving circuit, pixel driving method and display panel
  • AMOLED pixel driving circuit, pixel driving method and display panel
  • AMOLED pixel driving circuit, pixel driving method and display panel

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Embodiment Construction

[0048] 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, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0049] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation shown in the drawings Or positional relationship is only for the convenience of describing the present invention and simpl...

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Abstract

The embodiment of the invention discloses an AMOLED pixel driving circuit, a pixel driving method and a display panel. According to the embodiment of the invention, all or part of the thin film transistors in the AMOLED driving circuit are double-gate thin film transistors; the adjustability of the threshold voltage of the switching TFT is realized through the double-gate type thin film transistor; the negative bias of the threshold voltage of the second thin film transistor serving as the switching TFT is prevented, the data voltage is helped to be stably stored in the storage capacitor, thedisplay panel image flickering phenomenon caused by data loss is prevented, so that the display effect and quality of the display panel are improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an AMOLED pixel driving circuit, a pixel driving method and a display panel. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3225
CPCG09G3/3225G09G2320/0247G09G3/3233G09G2300/0842G09G2300/0819G09G2310/0262G09G2310/061G09G2310/08
Inventor 薛炎
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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