Shift registers and LCD device

Abstract

The invention provides a shift register and an LCD device using the shift register. The LCD device comprises an LCD panel, a data drive circuit and a scan drive circuit, wherein the data drive circuit is used for providing a data signal to the LCD panel; the scan drive circuit is used for providing a scan signal to the LCD panel; and the data drive circuit and the scan drive circuit respectively comprises a shift register for controlling the output sequence of the data signal and the scan signal. The shift register comprises a plurality of shift register units sequentially serially connected with each other, wherein each shift register unit includes a clock signal input pin, a reverse clock signal input pin, a signal input pin, a signal output pin, a high-level power supply pin, a low-level power supply pin and five transistors. The shift register has less occupation area of a circuit layout and can output signals free of superposition without using the shift register unit of the subsequent level as the feedback signal of the shift register of the previous level. The LCD device has good display.

Description

technical field [0001] The invention relates to a shift register and a liquid crystal display device using the shift register. Background technique [0002] Liquid crystal display devices have been widely used in the fields of mobile phones, personal digital assistants, notebook computers, personal computers, and televisions due to their low radiation, small size, and low power consumption, and have become the mainstream products of display devices. Generally, a driving circuit of a liquid crystal display device includes a data driving circuit and a scanning driving circuit. The data driving circuit is used to control the display brightness of each pixel unit, and the scanning driving circuit is used to control the turn-on and cut-off of the thin film transistor. Both drive circuits use shift registers as their core circuit units. The shift register is composed of multiple shift register units in series, and the output signal of the previous stage shift register unit is th...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the problem that the shift register occupies a large circuit layout space and the signals overlap in the prior art, it is necessary to provide a feedback signal that occupies a small circuit layout space and does not need the rear-stage shift register unit as the previous-stage shift register unit. A shift register with no overlapping output signals

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