Gate driving unit, gate driving method, gate driving circuit and display device
A gate drive and circuit technology, applied in the fields of gate drive units, gate drive methods, gate drive circuits and display devices, can solve the problem of insufficient charging and noise discharge capabilities of a pull-up node, threshold voltage drift, gate drive The problem of weak driving ability at the output end of the driving signal, etc., can achieve the effect of strong input signal transmission ability, improving driving ability, and reducing the risk of DC bias.
Active Publication Date: 2020-12-22
BOE TECH GRP CO LTD +1
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Problems solved by technology
[0004] The main purpose of the present invention is to provide a gate drive unit, a gate drive method, a gate drive circuit and a display device, so as to solve the problem that the existing gate drive unit has insufficient ability to charge the pull-up node and release noise, and to pull down the node. The threshold voltage of the transistor whose gate is connected to the DC control signal in the control circuit has a large drift, and the driving ability of the gate drive signal output terminal of the existing gate drive unit is weak.
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[0056] 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 persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0057] The transistors used in all embodiments of the present invention may be triodes, thin film transistors or field effect transistors or other devices with the same characteristics. In the embodiment of the present invention, in order to distinguish the two poles of the transistor except the control pole, one pole is called the first pole, and the other pole is called the second pole.
[0058] In actual operation, when the transistor is a triode, the contr...
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Provided are a gate drive unit, a gate drive method, a gate drive circuit, and a display device. The gate drive unit comprises a pull-up node control circuit (10), a pull-down node control circuit (11), a carry signal output end (Out_C), and a carry signal output circuit (12); the pull-up node control circuit (10) is used for controlling communication between a pull-up node and an input end (INPUT) under the control of a first clock signal (CLKB) inputted by a first clock signal input end; the pull-down node control circuit (11) is used for controlling the potential of a pull-down node (PD) under the control of an alternating-current control signal inputted by an alternating-current control signal end (ACS) and the potential of the pull-up node (PU); a carry signal generation circuit (12) is used for controlling the carry signal output end (Out_C) to output a carry signal under the control of the potential of the pull-up node (PU) and the potential of the pull-down node (PD); and the input end (INPUT) is connected to the adjacent upper-stage carry signal output end (Out_C).
Description
technical field [0001] The present invention relates to the technical field of display driving, in particular to a gate driving unit, a gate driving method, a gate driving circuit and a display device. Background technique [0002] In the existing GOA (Gate On Array, gate drive circuit set on the array substrate) model, the pull-up node is used to control the transistor to charge the pull-up node, and the pull-up node controls the gate and source of the transistor Both are connected to the input terminal, the drain of the pull-up node control transistor is connected to the pull-up node, the pull-up node control transistor is equivalent to a diode, when the pull-up node control transistor deteriorates, the input signal input at the input terminal passes through The diode formed by the pull-up node control transistor has a small start-up current when inputting, which leads to a decrease in the charging capability of the pull-up node. When the pulling ability of the pull-down ...
Claims
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IPC IPC(8): G09G3/20
CPCG09G3/20
Inventor 许卓白雅杰王孝林付鹏程张手强袁剑峰
Owner BOE TECH GRP CO LTD