Shifting register unit, shifting register and display device

Abstract

The invention provides a shifting register unit, a shifting register and a display device. The shifting register unit comprises an input module, a pull-up module and a pull-down module, wherein the pull-up module comprises a pull-up transistor; the shifting register unit further comprises a control voltage generating module; the first end of the control voltage generating module is connected with the output end of the input module; the second end of the control voltage generating module is connected with a grid electrode of the pull-up transistor; the control voltage generating module comprises a first memory capacitor, an antiphase submodule and a pull-up control submodule; the output end of the antiphase submodule is connected with the grid electrode of the pull-up transistor; the output end of the pull-up control submodule is connected with the first end of the first memory capacitor and the input end of the antiphase submodule. The shifting register unit disclosed by the invention can reduce the influence of suspension points in the shifting register unit on output, and improve the output stability.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display driving, in particular to a shift register unit, a shift register including the shift register unit, and a display device including the shift register. Background technique [0002] When the liquid crystal display is displaying, the drive circuit inside the liquid crystal display outputs signals to scan the pixel units of the liquid crystal display row by row to display images. The liquid crystal display mainly realizes the progressive scanning of the image by the shift register. [0003] In certain stages of operation of the existing shift register unit, the gate potential of the pull-up transistor that controls the output can be provided by the voltage of the previous stage stored in the storage capacitor, causing the gate of the pull-up transistor to be in a floating state. Therefore, it is easy to be affected by the leakage of surrounding transistors to change the conduction st...

AI Technical Summary

Problems solved by technology

[0003] In certain stages of operation of the existing shift register unit, the gate potential of the pull-up transistor that controls the output can be provided by the voltage of the previous stage stored in the storage capacitor, causing the gate of the pull-up transistor to be in a floating state. Therefore, it is easy to be affected by the leakage of surrounding transistors and change the conduction state of the pull-up transistor, thereby affecting the stability of the output voltage of the output terminal of the shift register unit.

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