(19)
(11) EP 0 541 396 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.09.1994 Bulletin 1994/38

(43) Date of publication A2:
12.05.1993 Bulletin 1993/19

(21) Application number: 92310203.2

(22) Date of filing: 06.11.1992
(51) International Patent Classification (IPC)5: G09G 1/00, G09G 3/36
(84) Designated Contracting States:
DE GB NL

(30) Priority: 08.11.1991 JP 293179/91
31.08.1992 JP 232126/92

(71) Applicant: SHARP KABUSHIKI KAISHA
Osaka 545 (JP)

(72) Inventors:
  • Numao, Takaji
    Nara-shi, Nara-ken (JP)
  • Katsuse, Hirofumi
    Tenri-shi, Nara-ken (JP)

(74) Representative: White, Martin David et al
MARKS & CLERK, 57/60 Lincoln's Inn Fields
London WC2A 3LS
London WC2A 3LS (GB)


(56) References cited: : 
   
       


    (54) Method for driving liquid crystal panel


    (57) A method for driving a liquid crystal panel including the steps of providing a ferroelectric liquid crystal of which dielectric anisotropy is negative, between a plurality of scanning and signal electrodes which intersect each other, applying positive and negative voltages to a pixel formed by the scanning electrode with the non-selection voltage and the signal electrode with the rewriting voltage and a pixel formed by the scanning electrode with the non-selection voltage and the signal electrode with the holding voltage so that the changes of the quantities of transmitted light of the two pixels are made almost equal to each other, and applying a positive or negative voltage within the range where an effect of the negative dielectric anisotropy acting on a ferroelectric liquid crystal molecule is increased, and a negative or positive voltage within the range where the effect on the molecule is decreased to a pixel formed by the scanning electrode with the selection voltage and the signal electrode with the holding voltage so that the change of a quantity of transmitted light of the pixel is made almost equal to or smaller than that of the two pixels.






    Search report