Integrated gate drive circuit and display device
A technology integrating gate drive and circuit, applied in static indicators, instruments, etc., can solve the problems of reduced GOA stage transmission stability, poor GOA circuit stability, short time, etc., to improve stage transmission stability and improve stability. Effect
Inactive Publication Date: 2021-03-16
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology
[0007] The object of the present invention is to provide an integrated gate drive (GOA) circuit that can reduce the leakage of the Q point, to solve the problem that the capacitor at the Q point maintains a high voltage potential for a short time and reduces the level of GOA. Transmission stability, leading to technical problems of poor stability of the GOA circuit
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[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.
[0028] In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermedi...
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The invention provides an integrated gate drive circuit and a display device. The integrated gate drive circuit comprises a plurality of cascaded integrated gate drive circuit units. And the nth-stagerow driving unit responsible for outputting the nth-stage horizontal scanning signal comprises a scanning control module, a node signal control module, an output control module, a first voltage stabilizing module, a pull-up module, a second voltage stabilizing module, a first pull-down module, a second pull-down module and a third pull-down module. A fifth auxiliary thin film transistor controlled by a third global signal is arranged between a first node and a pull-down module to serve as a second voltage stabilizing module, the level of the first node is maintained in the touch stage, the level of the first node is pulled down in the display stage, and therefore the capacitance of the first node is maintained in the touch stage. And the time for maintaining the high-voltage potential atthe first node is prolonged, so that the cascade stability of the GOA is improved, and the stability of the GOA circuit is further improved.
Description
technical field [0001] The invention relates to the field of display technology, in particular to an integrated gate drive circuit and a display device. Background technique [0002] At present, a liquid crystal display device, as a display component of an electronic device, has been widely used in various electronic products, and an integrated gate driving circuit is an important part of the liquid crystal display device. The integrated gate drive circuit, referred to as GOA (Gate Driver On Array), is to use the existing thin-film transistor liquid crystal display array substrate (Array) process to manufacture the line scanning drive signal circuit on the array substrate to realize the progressive scanning of the gate. A technology that drives the way. [0003] Display panels based on low temperature polysilicon (LTPS) technology can be classified into NMOS type, PMOS type, and CMOS with both NMOS and PMOS TFTs according to the type of thin film transistor (TFT) used in th...
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Login to View More IPC IPC(8): G09G3/36
CPCG09G3/3677
Inventor 管延庆崔小鹃汤富雄
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD