Display device and gate drive circuit and unit

Abstract

The invention discloses a display device and a gate drive circuit and unit. The gate drive unit comprises a signal holding circuit, a first-level output circuit and a second-level output circuit, wherein the signal holding circuit is used for outputting a high electrical level according to an input high-electrical-level trigger signal during the high-electrical-level period of a first clock signal; the first-level output circuit is used for outputting a high-electrical-level first-stage driving signal according to the high electrical level at the output end of the signal holding circuit during the high-electrical-level period of a second clock signal; the second-level output circuit is used for outputting a high-electrical-level second-stage driving signal according to the high electrical level at the output end of the first-level output circuit during the high-electrical-level period of a third clock signal. The number of gate drive units in the display device is reduced, the cascade relation of the gate drive units can also be simplified, cascade wiring space is saved, and miniaturization and low cost of the display device are benefited.

Description

technical field [0001] The present invention relates to the technical field of gate driving, in particular to a display device, a gate driving circuit and a driving unit. Background technique [0002] Currently, liquid crystal display devices are more and more widely used in daily life. In order to obtain the effect of high resolution and narrow frame, the industry usually adopts Gate Driver on Array (GOA) technology in liquid crystal display devices. The gate drive circuit is an important part of the gate drive technology. The gate driving circuit may include a plurality of cascaded gate driving units (or shift registers), and each gate driving unit may be connected to a gate line to input signals to the gate line, thereby realizing row-by-row scanning of pixels. [0003] Most of the currently used gate drive units are one trigger signal that only triggers one shift register signal; that is to say, the current traditional gate drive unit only outputs one gate drive signal...

AI Technical Summary

Problems solved by technology

In this way, the entire gate drive circuit uses more gate drive units and occupies a larger area, which is not conducive to the miniaturization and low cost of the display panel.

[0004] Although the patent with publication number CN 103474040 discloses a gate drive unit, which can trigger two shift register signals through one trigger signal, reducing the number of gate drive units used in the display device, but the gate drive The cascade circuit layout of the cells is very complex: from figure 1 It can be seen that although the nth gate drive unit (GOA unit) can output two gate drive signals, Output[n] and Output[n+6], the gate drive unit also needs to be output by other GOA units. The gate drive signals Output[n+8] and Output[n+2] are used as input reset signals, resulting in a very complicated cascade relationship, complex wiring and more space. Therefore, the entire gate based on this gate drive unit Due to the need for more cascade wiring space, the pole drive circuit still needs to occupy a large area, which is not conducive to the miniaturization of the display device.

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