Patent ID: 9378842
Filing Date: 2016-06-28
CPC Classification: G09G,G11C

Claim Text:
1. A bidirectional shift register comprising a plurality of stages for outputting scan pulses forward or reversely based on a start pulse and a plurality of clock pulses with a phase difference, the bidirectional shift register further comprising a start selector for supplying the start pulse to only a first one of the stages in a forward mode where the bidirectional shift register outputs the scan pulses forward, and to only a last one of the stages in a reverse mode where the bidirectional shift register outputs the scan pulses reversely, wherein the first stage outputs a corresponding one of the scan pulses first of all in the forward mode, wherein the last stage outputs a corresponding one of the scan pulses first of all in the reverse mode, wherein the first stage comprises: an output unit configured to output any one of the corresponding scan pulse and a deactivation voltage based on a voltage at the set node and a voltage at the reset node.