Gate driving unit and driving method thereof, gate driving circuit and displaying device

Abstract

The invention discloses a gate driving unit and a driving method thereof, a gate driving circuit and a displaying device. The gate driving unit comprises a shift register and a parallel output module,wherein the parallel output module is both connected with a control voltage signal input end and a pull-up node in the shift register; a signal output end of the parallel output module and a signal output end of the shift register are both connected with a signal output end of the gate driving unit; the control voltage signal input end is used for providing a first control voltage signal to the parallel output module when an environment temperature is less than a preset temperature; the parallel output module is used for outputting a signal identical to the signal output by the signal outputend of the shift register under control of electric potential of the pull-up node and the first control voltage signal. According to the technical scheme disclosed by the invention, the parallel output module is controlled to output the signal identical to the signal output by the signal output end of the shift register in a low-temperature environment, so that output delay of the gate driving circuit is reduced, and the charging efficiency is promoted.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a gate drive unit, a drive method thereof, a gate drive circuit and a display device. Background technique [0002] Most of the existing display devices adopt the design of gate drive integrated on the array substrate (Gate Drive On Array, referred to as GOA). Compared with the existing chip on film (Chip On Film, referred to as COF) technology or chips directly fixed Chip On Glass (COG for short) process, which not only saves costs, but also achieves a symmetrical and beautiful design on both sides of the panel, and can also save the bonding area of ​​the gate drive circuit and the peripheral wiring space. [0003] The GOA circuit generally includes several gate driving units, and the signal output end of each gate driving unit is connected to a corresponding gate line. The existing gate driving unit is specifically a shift register, the signal output terminal of the s...

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Problems solved by technology

[0004] However, in practical applications, it is found that since the core component of the shift register is a transistor, but the semiconductor characteristics of the transistor are greatly affected by temperature, the problems of increased output delay of the shift register and insufficient charging of the gate line are prone to occur at low temperatures , causing the driver to fail

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