Global Patent Index - EP 0344753 A3

EP 0344753 A3 19910814 - LIQUID CRYSTAL APPARATUS AND DRIVING METHOD THEREFOR

Title (en)

LIQUID CRYSTAL APPARATUS AND DRIVING METHOD THEREFOR

Publication

EP 0344753 A3 19910814 (EN)

Application

EP 89109852 A 19890531

Priority

JP 13590788 A 19880601

Abstract (en)

[origin: EP0344753A2] A liquid crystal apparatus, includes a liquid crystal device comprising a matrix electrode structure including scanning electrodes and data electrodes intersecting each other and forming a pixel at each intersection, and a ferroelectric liquid crystal having a negative dielectric anisotropy disposed between the scanning electrodes and the data electrodes; and means for applying to a pixel on a selected scanning electrode a bipolar pulse for causing a conversion of one optical state to the other optical state of the pixel, the bipolar data pulse including a unit pulse of one polarity which has a duration set to be shorter than a minimum value tau min of a current response time tau 0.

IPC 1-7

G09G 3/36

IPC 8 full level

G02F 1/133 (2006.01); G09G 3/36 (2006.01)

CPC (source: EP)

G09G 3/3629 (2013.01); G09G 2310/06 (2013.01); G09G 2320/0209 (2013.01)

Citation (search report)

[A] EP 0244804 A2 19871111 - HITACHI LTD [JP]

Designated contracting state (EPC)

DE FR GB IT NL

DOCDB simple family (publication)

EP 0344753 A2 19891206; EP 0344753 A3 19910814; EP 0344753 B1 19950802; DE 68923654 D1 19950907; DE 68923654 T2 19960118; JP H01304430 A 19891208; JP H0833537 B2 19960329

DOCDB simple family (application)

EP 89109852 A 19890531; DE 68923654 T 19890531; JP 13590788 A 19880601