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Details

Veröffentlichungs-Nr.

EP3486894

Aktenzeichen

EP18206226

Anmeldetag

14. November 2018

Veröffentlichung

27. Dezember 2023

Erteilung

27. Dezember 2023

Rechtsraum

EP

IPC

G09G3/20G11C19/00G09G3/36G09G3/3266G09G3/3275G11C19/28

Abstract

A bi-directional shift register (140) can include a plurality of stages (ST), an N th stage (ST(N)) among the plurality of stages (ST) including a first switching unit (210) configured to receive a forward driving signal (Vst) and a reverse driving signal (Vst(Rev)), and control a Q-node (Q); a second switching unit (220) configured to receive an (N + 2) th clock signal (CLK(N+2)), and control a QB-node (QB); a third switching unit (230) configured to discharge the QB-node (QB) to a low-level voltage (VGL) when the Q-node (Q) is charged to a high-level voltage (VGH), and discharge the Q-node (Q) to the low-level voltage (VGL) when the QB-node (QB) is charged to the high-level voltage (VGH); and an output unit configured to output an N th clock signal (CLK(N)) to an output terminal based on a voltage at the Q-node (Q), in which the forward driving signal (Vst) is an output signal from an (N - 1) th stage or a forward start signal from an external source external to the shift register, and the reverse driving signal (Vst(Rev)) is an output signal from the (N + 1) th stage or a reverse start signal from the external source.

Anmelder

Firma

LG Display Co., Ltd.

Land

🇰🇷 Südkorea

Fachgebiete