Shift register circuit having bi-directional transmission mechanism
A shift register includes a plurality of shift register stages for providing gate signals. Each shift register stage has a pull-up unit, a carry unit, a carry control unit, an input unit and a pull-down unit. The pull-up unit is employed to pull up a gate signal according to a driving control voltage and a first clock. The carry unit generates a preliminary start pulse signal based on the driving control voltage and the first clock. The carry control unit outputs the preliminary start pulse signal to become a forward or backward start pulse signal according to first and second bias voltages. The input unit is utilized for inputting a start pulse signal generated by a preceding or succeeding shift register stage to become the driving control voltage. The pull-down unit pulls down the gate signal, the preliminary start pulse signal and the driving control voltage according to multiple clocks.
AU Optronics Corp.
G
G11C
inventional
Yung-Chih Chih-Lung Chun-Da
Chen Lin Tu