Shift register unit, shift register, gate drive circuit and display device

Abstract

The invention provides a shift registering unit, the shift registering unit comprises an upward-pulling transistor, a downward-pulling transistor, a memory capacitor, a driving input module and a driving and output down-pulling module, wherein the driving input module comprises a starting signal input end and a first clock signal input end, a starting signal is input through the starting signal input end, a clock signal is input through the first clock signal input end, a first end of the driving and output down-pulling module is connected with a downward-pulling node, a second end of the driving and output down-pulling module is connected with an upward-pulling node, a third end of the driving and output down-pulling module is connected with a high level input end, and a fourth end of the driving and output down-pulling module is connected with a low level input end. A shift register, a grid electrode drive circuit and a display device are further provided. By means of the shift registering unit, the charging time can be prolonged under the circumstance that the clock signals are not increased.

Description

technical field [0001] The present invention relates to the field of display devices, in particular to a shift register unit, a shift register comprising the shift register unit, a gate drive circuit comprising the shift register, and a gate drive circuit comprising the gate The display device of the drive circuit. Background technique [0002] With the development of science and technology and consumers' demand for high-quality images, liquid crystal display panels are also developing in the direction of large size, energy saving, light and thin, and high resolution. The increase in the size of the liquid crystal display panel means that the resistance and capacitance of the gate line and the data line increase, resulting in the delay problem of the resistance and capacitance. These problems cause afterimages to appear on the screen when the liquid crystal display panel is turned off. At present, mainstream TVs or high-end mobile display panels have realized full high-def...

AI Technical Summary

Problems solved by technology

However, this requires the use of multiple clocks, and if the coincidence of the charging time of the gate lines between two adjacent rows is different, the required timing control may also be different, and the cascade relationship of the gate shift registers is also different, which is It increases the difficulty of applying gate drive technology to products with large size, high resolution and ultra-high definition resolution, and increases the cost, making this product uncompetitive

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