Patent ID: 8704748

Claim:
A gate driving circuit including a plurality of dependently coupled stages, wherein one or more of the stages comprises: a pull-up unit for pulling up a current gate signal in response to a first clock signal during a first period in one frame; a pull-up driver coupled to the pull-up unit, the pull-up driver configured to receive a carry signal from one of a previous stage and to turn on the pull-up unit; a pull-down unit for receiving a gate signal from a next stage, the pull-down unit configured to discharge the current gate signal to an off voltage level, and to turn off the pull-up unit; a holder for holding the current gate signal at the off voltage level; an inverter for turning on or turning off the holder in response to the first clock signal; and a ripple preventer having an output terminal coupled to an input terminal of the inverter and configured to prevent noise from transmitting to the inverter, wherein the ripple preventer comprises a ripple preventing diode comprised of a transistor having a source terminal and a gate terminal, and a drain terminal coupled to an input terminal of the inverter, wherein the ripple preventer further comprises a ripple preventing transistor having a drain terminal directly coupled to the drain terminal of the ripple preventing diode, a source terminal directly coupled to an off voltage terminal for applying the off voltage, and a gate terminal coupled to a second clock signal terminal for applying a second clock signal having an opposite phase of the first clock signal, wherein the pull-up unit comprises a first pull-up unit and an output terminal of the first pull-up unit is coupled to the current gate line, wherein the gate driving circuit further comprises a carry circuit for pulling up a current carry signal by using the first clock signal during the first period and an output terminal of the carry circuit is coupled to the pull-up driver of a next stage, and wherein the output terminal of the carry circuit is directly coupled to the source terminal and the gate terminal of the ripple preventing diode.