Patent ID: 8902212

Claim:
An image display system, comprising: a gate driving circuit, for generating a plurality of gate driving signals to drive a plurality of pixels in a pixel array, wherein the gate driving circuit comprises a bi-directional shift register circuit, the bi-directional shift register circuit comprises a plurality of stages of shift registers coupled in serial with each generating one of the gate driving signals, and wherein at least one of the shift registers comprises: an input stage circuit, coupled to a first signal input terminal and a second signal input terminal for receiving a first input signal and a second input signal, wherein the first input signal is a start pulse or the corresponding gate driving signal generated by a previous stage of shift register, and the second input signal is the corresponding gate driving signal generated by a following stage of shift register or the start pulse; an output stage circuit, coupled to a first clock input terminal for receiving a first clock signal and generating the corresponding gate driving signal at an output terminal according to the first clock signal; a first transistor, comprising a first terminal coupled to the output stage circuit at a first node, a second terminal coupled to the input stage circuit at a second node, and a third terminal coupled to a high operation voltage; and a second transistor, comprising a first terminal coupled to the first transistor at the second node, a second terminal coupled to the first transistor at the first node, and a third terminal coupled to the high operation voltage, wherein the first transistor charges the first node and the second transistor discharges the second node.