(19)
(11) EP 0 419 184 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.04.1992 Bulletin 1992/14

(43) Date of publication A2:
27.03.1991 Bulletin 1991/13

(21) Application number: 90310156.6

(22) Date of filing: 17.09.1990
(51) International Patent Classification (IPC)5: G09G 3/30, H04N 3/12
(84) Designated Contracting States:
DE GB

(30) Priority: 16.09.1989 JP 240395/89

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

(72) Inventors:
  • Yamaguchi, Hisashi
    Yamatokoriyama-shi, Nara-ken (JP)
  • Sakamoto, Atsushi
    Nara-shi, Nara-ken (JP)
  • Shoji, Kazuo
    Nara-shi, Nara-ken (JP)
  • Yamamoto, Kioichi
    Yamatokoriyama-shi, Nara-ken (JP)
  • Ohba, Toshihiro
    Nara-shi Nara-ken (JP)
  • Uede, Hisashi
    Wakayama-shi, Wakayama-ken (JP)

(74) Representative: Brown, Kenneth Richard et al
R.G.C. Jenkins & Co. 26 Caxton Street
London SW1H 0RJ
London SW1H 0RJ (GB)


(56) References cited: : 
   
       


    (54) Method and apparatus for driving a display device


    (57) A method of driving a display device with a plurality of scanning side electrodes (y1 to y4) and a plurality of data side electrodes (x1 to x8) which are disposed in directions intersecting each other, and a dielectric layer interposed between the scanning side electrodes and the data side electrodes, and including steps of applying modulation voltages corresponding to display data to the data side electrodes, and also applying writing voltages of positive or negative polarity to the scanning side electrodes through line sequence, so as to cause picture elements composed of the dielectric layer to emit light.
    The driving method further includes steps of thinning out the display data, and applying a plurality of kinds of modulation voltages different in amplitude according to each frame, so as to cause the picture elements to effect gradation display of different brightness in multi-stages.







    Search report