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:
Jul. 28, 2020
Filed:
Nov. 16, 2018
Lg Display Co., Ltd., Seoul, KR;
YuSok Lim, Seoul, KR;
Sohyun Kim, Goyang-si, KR;
LG DISPLAY CO., LTD., Seoul, KR;
Abstract
A bi-directional shift register can include a plurality of stages, an Nstage among the plurality of stages including a first switching unit configured to receive a forward driving signal and a reverse driving signal, and control a Q-node; a second switching unit configured to receive an (N+2)clock signal, and control a QB-node; a third switching unit configured to discharge the QB-node to a low-level voltage when the Q-node is charged to a high-level voltage, and discharge the Q-node to the low-level voltage when the QB-node is charged to the high-level voltage; and an output unit configured to output an Nclock signal to an output terminal based on a voltage at the Q-node, in which the forward driving signal is an output signal from an (N−1)stage or a forward start signal from an external source external to the shift register, and the reverse driving signal is an output signal from the (N+1)stage or a reverse start signal from the external source.