EP 1068608 B1 20030514 - ACTIVE MATRIX LIQUID CRYSTAL DISPLAY
Title (en)
ACTIVE MATRIX LIQUID CRYSTAL DISPLAY
Title (de)
AKTIVMATRIX-FLÜSSIGKRISTALLANZEIGE
Title (fr)
AFFICHAGE A CRISTAUX LIQUIDES A MATRICE ACTIVE
Publication
Application
Priority
- DE 9900548 W 19990302
- DE 19808982 A 19980303
Abstract (en)
[origin: DE19808982A1] The invention relates to an active matrix liquid crystal display with liquid crystal cells arranged in lines and columns, which are located on a common reference potential on one side and gray-scale value signals can be switched on their other side. In order to enhance the voltage range within which the liquid crystal cells can be operated without altering image reproduction, a correction device (28) is provided which distorts the gray-scale value signals (20) reaching the liquid crystal cells (9) on the basis of information regarding the typical dependency between the optical transparency of the liquid crystal cells (9) and the voltage applied thereon and regarding the dependency of the difference in potential between the gray-scale value signals (2) and the reference potential (V0) in such a way that an at least an almost linear relationship between the optical transparency of the liquid crystal cells (9) and the undistorted gray-scale value signals (20') is obtained.
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 KR US)
G09F 9/35 (2013.01 - EP US); G09G 3/003 (2013.01 - EP US); G09G 3/36 (2013.01 - KR); G09G 3/3648 (2013.01 - EP US); G09G 3/2011 (2013.01 - EP US); G09G 3/2014 (2013.01 - EP US); G09G 3/3696 (2013.01 - EP US); G09G 2320/0276 (2013.01 - EP US); G09G 2320/028 (2013.01 - EP US); G09G 2320/06 (2013.01 - EP US); G09G 2320/0673 (2013.01 - EP US); G09G 2320/068 (2013.01 - EP US); G09G 2380/10 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
DE 19808982 A1 19990909; DE 59905565 D1 20030618; EP 1068608 A1 20010117; EP 1068608 B1 20030514; JP 2002506240 A 20020226; KR 100604704 B1 20060728; KR 20010041514 A 20010525; US 6593904 B1 20030715; WO 9945526 A1 19990910
DOCDB simple family (application)
DE 19808982 A 19980303; DE 59905565 T 19990302; DE 9900548 W 19990302; EP 99917759 A 19990302; JP 2000534993 A 19990302; KR 20007009683 A 20000901; US 62354100 A 20001204