The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 2020
Filed:
Aug. 21, 2018
Lg Display Co., Ltd., Seoul, KR;
LG DISPLAY CO., LTD., Seoul, KR;
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.