Patent ID: 9747854
Date: 2017-08-29
CPC Classifications: G09G,G11C

Claim:
1. A shift register, comprising a first pull-up unit, a first pull-down unit, an output control unit, a second pull-up unit and a second pull-down unit, wherein the first pull-up unit is connected to a first node, a first clock signal terminal and a driving signal output terminal, and supplies a signal at the first clock signal terminal to the driving signal output terminal under a control of the first node; the first pull-down unit is connected to a second node, a reference signal terminal and the driving signal output terminal, and supplies a signal at the reference signal terminal to the driving signal output terminal under a control of the second node; the output control unit is connected to the first node, the second node, a selection control signal terminal, a third node and a fourth node, and connects the first node to the third node and connects the second node to the fourth node when the selection control signal terminal receives a selection control signal; the second pull-up unit is connected to the third node, the first clock signal terminal and a selection driving output terminal, and supplies the signal at the first clock signal terminal to the selection driving output terminal under a control of the third node; and the second pull-down unit is connected to the fourth node, the reference signal terminal and the selection driving output terminal, and supplies the signal at the reference signal terminal to the selection driving output terminal under a control of the fourth node.