Shifting register, working method of shifting register, grid electrode driving device and display device

Abstract

The embodiment of the invention discloses a shifting register, a working method of the shifting register, a grid electrode driving device and a display device, relates to the technical field of displaying, and aims at effectively eliminating voltage coupling noise generated by clock signals at an output end of the shifting register. The shifting register comprises a first input unit, a clock control unit, a second input unit, a reverse unit, a pull-down unit, a first electrical level selection unit, a second electrical level selection unit and a third electrical level selection unit. The first input unit is respectively connected with a first input signal, a first electrical level selection unit and the second input unit, wherein a node where the first input unit and the second input unit are connected is a pull up node, and the first input unit is used for controlling electric potential of the pull up node. The shifting register, the working method of the shifting register, the grid electrode driving device and the display device can be used in various display devices.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a shift register and a working method thereof, a gate driving device and a display device. Background technique [0002] Liquid crystal display products are widely used in various fields of production and life. When displaying, the liquid crystal display drives each pixel in the liquid crystal panel to display through a driving circuit. The driving circuit of the liquid crystal display mainly includes a gate driving circuit and a data driving circuit. Wherein, the data driving circuit is used for sequentially latching the input data and clock signal and converting the latched data into an analog signal and inputting it to the data line of the liquid crystal panel. The gate driving circuit is used to convert the clock signal into an on / off voltage through a shift register (Shift Register, SR), and output it to each gate line of the liquid crystal panel respectively. Wherein, on...

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Problems solved by technology

[0004] However, it is well known that the clock signal is a square wave that periodically circulates between the first level and the second level, and includes a plurality of clock periods in one scan period when the scan signal circulates from the first row of pixels to the last row of pixels, and For a shift register, only half of the clock cycle is used to output the scan signal, and in other clock cycles that do not need to output the scan signal, the output end of the shift register is often also received by the clock signal The level of the output changes due to the influence of the gate line will cause a large circuit noise, which will cause the inappropriate turn-on of the thin film transistor in the pixel and make the circuit function disorder

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