Drive circuit and shifting register thereof

Abstract

The invention provides a drive circuit and a shifting register thereof. The drive circuit comprises a first transistor, a second transistor, a third transistor and a signal intensifying circuit. The first end of the first transistor receives an (n-2)th gate drive signal, and the control end of the first transistor receives an (n-2)th control signal. The first end of the second transistor receives a high-frequency clock pulse signal, the second end of the second transistor outputs an nth control signal, and the control end of the second transistor is electrically connected with the second end of the first transistor in a coupling mode. The first end of the third transistor receives the high-frequency clock pulse signal, and the second end of the third transistor outputs an nth gate drive signal. The signal intensifying circuit receives an (n+2)th control signal, and the descending speed of the nth gate drive signal is increased by heightening the voltage potential of a common node. Compared with the prior art, according to the drive circuit and the shifting register thereof, the descending process of the nth gate drive signal can be accelerated so that the corresponding transistors can be fast closed, and therefore power consumption of a circuit is reduced, and the circumstance that power consumption is high is avoided so as to protect an electronic assembly of a circuit board against damage.

Description

technical field [0001] The present invention relates to a driving circuit, in particular to a driving circuit for a Gate driver On Array (GOA) panel of an array substrate and a shift register including the driving circuit. Background technique [0002] In a thin film transistor liquid crystal display (Thin Film Transistor Liquid Crystal Display, TFT-LCD), each pixel has a thin film transistor (Thin Film Transistor, TFT), the gate of the thin film transistor is electrically connected to the scanning line in the horizontal direction, The drain is electrically connected to the vertical data line, and the source is electrically connected to a pixel electrode. If a sufficient positive voltage is applied to a scanning line in the horizontal direction, all the TFTs on the scanning line will be turned on, and at this time, the pixel electrode corresponding to the scanning line will be connected to the data line in the vertical direction, thereby connecting the data line The video s...

AI Technical Summary

Problems solved by technology

[0004] However, GOA technology requires a high-voltage dropout frequency signal to be input into the glass substrate. At this time, the parasitic capacitance is much larger than that of the traditional gate driver IC. Therefore, the technology of integrating the gate driver circuit on the glass substrate often makes the overall power consumption rises

In particular, on large-size LCD products, if no effective protective measures are taken, the components on the control circuit board may burn out due to excessive power consumption

In addition, for portable notebook computers, excessive power consumption will shorten the battery life and bring a lot of inconvenience to users.

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