GATE DRIVING DEVICES CAPABLE OF PROVIDING BI-DIRECTIONAL SCAN FUNCTIONALITY

摘要

A gate driving device includes a gate driving unit, a first control unit, a second control unit and a switch unit. The first control unit includes an input terminal receiving a first output signal and a first clock input terminal receiving a first clock signal. The second control unit includes an input terminal receiving a second output signal and a first clock input terminal receiving a second clock signal. The switch unit, the first control unit and the second control unit are coupled to a carryout signal output node for generating a carryout signal at the carryout signal output node which indicates whether the gate driving unit is functioning correctly. The first output signal and the second output signal of the gate driving unit are respectively one signal generated by any two different stages of shift register in the gate driving unit.

主权项

1. A gate driving device, comprising:
a gate driving unit, comprising a bi-directional shift register circuit for generating a plurality of gate driving signals according to a start pulse to drive a plurality of pixels in a pixel array, wherein the bi-directional shift register circuit comprises 1˜N stages of shift registers coupled in serial, and N is a positive integer, a first stage shift register generates a first output signal and an N-th stage shift register generates a second output signal; a first control unit, coupled to the gate driving unit and comprising an input terminal receiving the first output signal of the gate driving unit and a first clock input terminal receiving a first clock signal; a second control unit, coupled to the gate driving unit and comprising an input terminal receiving the second output signal of the gate driving unit and a first clock input terminal receiving a second clock signal; and a switch unit, coupled to the first control unit and the second control unit at a carryout signal output node, wherein the first control unit and the second control unit generates a carryout signal at the carryout signal output node according to the first output signal and the second output signal.