Liquid crystal display apparatus having bi-directional voltage stabilizing function and shift register

Abstract

The invention relates to a liquid crystal display device with bidirectional voltage-stabilizing function and a shift register. The device comprises a plurality of gate lines, and multi-stage shift register units for driving corresponding gate lines respectively. Each shift register unit comprises a first circuit and a second circuit. The first circuit is arranged on a first side of the corresponding gate line, and comprises a pulse generating circuit and a first transistor with a first channel width-length ratio. The pulse generating circuit can generate a drive signal according to the electric potential of a node, while the first transistor can maintain the electric potential of the node. The second circuit is arranged on a second side of the corresponding gate line, and comprises a second transistor with a second channel width-length ratio, wherein the second transistor can maintain the electric potential of the drive signal from the second side of the corresponding gate line. The value of the first channel width-length ratio is less than the value of the second channel width-length ratio, and the area of the first circuit is larger than the area of the second circuit. The device can reduce a circuit deployment space at a signal input side so as to reduce a frame of the liquid crystal display device to achieve the aim of microminiaturization.

Description

technical field [0001] The invention relates to a liquid crystal display device, in particular to a liquid crystal display device with a bidirectional voltage stabilizing function. Background technique [0002] Liquid crystal display (liquid crystal display, LCD) has the advantages of low radiation, small size and low energy consumption, and has gradually replaced the traditional cathode ray tube display (cathode ray tube display, CRT), and is widely used in notebook computers, personal digital Assistant (personal digital assistant, PDA), flat-screen TV, or information products such as mobile phones. The operation mode of the traditional liquid crystal display is to use an external driver chip to drive the pixels on the panel to display images, but in order to reduce the number of components and reduce the manufacturing cost, it has gradually developed in recent years to directly manufacture the driver circuit structure on the display panel, such as the gate A technology th...

AI Technical Summary

Problems solved by technology

Since the transistor switches T1-T4 require sufficient circuit layout space, the frame of the liquid crystal display device 100 cannot be effectively reduced.

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