EP 0447919 B1 19950719 - Drive circuit for dot matrix display.
Title (en)
Drive circuit for dot matrix display.
Title (de)
Steuereinrichtung für eine Bildpunktmatrixanzeige.
Title (fr)
Circuit de commande d'un affichage à matrice de points.
Publication
Application
Priority
JP 6193490 A 19900313
Abstract (en)
[origin: EP0447919A2] A drive circuit for a dot matrix liquid crystal display which receives polarity changing drive voltages in different fields, comprising segment drivers for supplying low voltage picture signals and common drivers for supplying a first voltage having a large voltage difference from the picture signal during a selected time and a second voltage having a small voltage difference from the picture signal during non-selected time.
IPC 1-7
IPC 8 full level
G02F 1/133 (2006.01); G09G 3/20 (2006.01); G09G 3/36 (2006.01)
CPC (source: EP)
G09G 3/3614 (2013.01); G09G 3/3681 (2013.01); G09G 3/3692 (2013.01); G09G 3/3696 (2013.01); G09G 2330/02 (2013.01)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0447919 A2 19910925; EP 0447919 A3 19920108; EP 0447919 B1 19950719; DE 69111274 D1 19950824; DE 69111274 T2 19960321; JP 2634680 B2 19970730; JP H03261991 A 19911121
DOCDB simple family (application)
EP 91103736 A 19910312; DE 69111274 T 19910312; JP 6193490 A 19900313