Patent ID: 8774348
Filing Date: 2014-07-08
Classification: G09G,G11C

Abstract:
1. A shift register circuit for providing plural gate signals to plural gate lines, the shift register circuit comprising a plurality of shift register stages, an Nth shift register stage of the shift register stages comprising: a pull-up unit, electrically connected to an Nth gate line of the gate lines, for pulling up an Nth gate signal of the gate signals according to a first control signal and a low-frequency clock; a pull-up control unit, electrically connected to the pull-up unit, for generating the first control signal according to a driving control voltage and a first clock; a first clock input unit, electrically connected to the pull-up control unit, for inputting the first clock to the pull-up control unit according to the low-frequency clock; an input unit, electrically connected to the pull-up control unit and an (N−1)th shift register stage of the shift register stages, for inputting an (N−1)th gate signal of the gate signals to become the driving control voltage according to an input control signal; an input control unit, electrically connected to the input unit, for inputting a second clock to become the input control signal according to the low-frequency clock, wherein the second clock has a phase opposite to the first clock; a second clock input unit, electrically connected to the input control unit, for inputting the second clock to the input control unit according to the low-frequency clock; an energy-store unit, electrically connected to the pull-up control unit and the input unit, for performing a charging process or a discharging process based on the (N−1)th gate signal; a first pull-down unit, electrically connected to the Nth gate line and the pull-up unit, for pulling down the Nth gate signal according to a second control signal; a pull-down control unit, electrically connected to the input unit and the first pull-down unit and comprising a first transistor, a second transistor, and a third transistor, for generating the second control signal according to the driving control voltage and the low-frequency clock; and a second pull-down unit, electrically connected to the pull-down control unit and the pull-up control unit, for pulling down the first control signal according to the second control signal.