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SHIFT REGISTER CIRCUIT

  • US 20110142192A1
  • Filed: 12/03/2010
  • Published: 06/16/2011
  • Est. Priority Date: 12/11/2009
  • Status: Active Grant
First Claim
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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 high power voltage;

    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;

    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 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, for generating the second control signal according to the driving control voltage and the high power voltage; 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.

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