公开(公告)号：US10672324B2

公开(公告)日：2020-06-02

申请号：US16107276

申请日：2018-08-21

Applicant: LG DISPLAY CO., LTD.

Inventor： ChungSik Kong ,  MiHee Shin ,  GyuTae Kang

IPC: G09G3/36 ,  G09G3/30 ,  G09G3/3266

Abstract: An electroluminescent display device includes sub-pixels connected to gate lines, and a gate driver configured to supply a scan signal to at least one of the gate lines, and including stages. One of the stages includes a QB-node regulation unit configured to charge a QB-node and a QP-node to turn-on voltage by using a first gate clock signal and a second gate clock signal, and a pull-down unit configured to output a turn-off voltage in response to a voltage of the QP-node. The QB-node regulation unit includes a QP-node control part configured to invert a phase of a voltage of a Q1-node and apply the voltage of the inverted phase to the QP-node, and a QB-node control part configured to bootstrap the QP-node. Accordingly, by employing the gate driver including the QB-node regulation unit that provides a stable voltage to the QB-node and the QP-node, the reliability of the gate driver can be improved, and the bezel of the electroluminescence display device can be reduced.