(19)
(11) EP 0 587 913 A1

(12)

(43) Date of publication:
23.03.1994 Bulletin 1994/12

(21) Application number: 93906873.0

(22) Date of filing: 01.04.1993
(51) International Patent Classification (IPC): 
G02F 1/ 133( . )
G09G 3/ 36( . )
(86) International application number:
PCT/JP1993/000421
(87) International publication number:
WO 1993/020550 (14.10.1993 Gazette 1993/25)
(84) Designated Contracting States:
DE FR GB

(30) Priority: 01.04.1992 NL 19920000606

(71) Applicant: CITIZEN WATCH CO. LTD.
Shinjuku-Ku Tokyo 163-04 (JP)

(72) Inventor:
  • WELZEN, Theo, L.
    NL-6223 AD Maastricht (NL)

(74) Representative: Adams, William Gordon, et al 
RAWORTH, MOSS & COOK 36 Sydenham Road
Croydon Surrey CR0 2EF
Croydon Surrey CR0 2EF (GB)

   


(54) LIQUID-CRYSTAL DISPLAY DEVICE WITH ADDRESSING SCHEME TO ACHIEVE HIGH CONTRAST AND HIGH BRIGHTNESS VALUES WHILE MAINTAINING FAST SWITCHING