Global Patent Index - EP 1261679 A1

EP 1261679 A1 2002-12-04 - SUPERTWISTED NEMATIC LIQUID CRYSTAL DISPLAYS, LIQUID CRYSTAL COMPOSITIONS AND COMPOUNDS

Title (en)

SUPERTWISTED NEMATIC LIQUID CRYSTAL DISPLAYS, LIQUID CRYSTAL COMPOSITIONS AND COMPOUNDS

Title (de)

SUPERTWIST-NEMATISCH FLÜSSIGKRISTALLANZEIGEN ,FLÜSSIGKRISTALLZUSAMMENSETZUNGEN-UND VERBINDUNGEN

Title (fr)

AFFICHAGES A CRISTAUX LIQUIDES NEMATIQUES EN HELICE, COMPOSITIONS ET COMPOSES DE CRISTAUX LIQUIDES

Publication

EP 1261679 A1 (EN)

Application

EP 00987402 A

Priority

  • EP 00987402 A
  • DE 10009234 A
  • EP 0012732 W
  • EP 00104080 A

Abstract (en)

[origin: WO0164814A1] The invention relates to supertwist liquid-crystal displays (STN-LCDs) having short switching times and good steepnesses and angle dependencies, and to the novel nematic liquid-crystal mixtures used therein, which comprise compounds of formula (A) together with compounds of formula (IB), wherein R<3>, R<4>, L<1>, L<2>, m, Y<1>, Y<2> and W have the meanings given in the text and to compounds of formula (IA).

IPC 1-7 (main, further and additional classification)

C09K 19/42; C07D 239/26; C07D 319/06; C07D 333/04; C07D 333/78; C09K 19/04; C09K 19/34; C09K 19/46

IPC 8 full level (invention and additional information)

G02F 1/133 (2006.01); C07D 239/26 (2006.01); C07D 319/06 (2006.01); C07D 333/04 (2006.01); C07D 333/38 (2006.01); C07D 333/78 (2006.01); C09K 19/04 (2006.01); C09K 19/20 (2006.01); C09K 19/30 (2006.01); C09K 19/34 (2006.01); C09K 19/42 (2006.01); C09K 19/44 (2006.01); C09K 19/46 (2006.01)

CPC (invention and additional information)

C09K 19/34 (2013.01); C07D 239/26 (2013.01); C07D 319/06 (2013.01); C07D 333/04 (2013.01); C07D 333/38 (2013.01); C07D 333/78 (2013.01); C09K 19/0403 (2013.01); C09K 19/42 (2013.01); C09K 19/46 (2013.01)

Citation (search report)

See references of WO 0164814A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

WO 0164814 A1 20010907; AU 2365601 A 20010912; CN 1248033 C 20060329; CN 1437647 A 20030820; EP 1261679 A1 20021204; JP 2003525474 A 20030826; JP 5236140 B2 20130717

INPADOC legal status


2008-12-17 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20080701

2005-05-25 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20050408

2003-01-02 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020701

2002-12-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-12-04 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI