Global Patent Index - EP 2284828 A1

EP 2284828 A1 20110216 - Liquid crystal display device

Title (en)

Liquid crystal display device

Title (de)

Flüssigkristallanzeigevorrichtung

Title (fr)

Dispositif d'affichage à cristaux liquides

Publication

EP 2284828 A1 20110216 (EN)

Application

EP 10015232 A 20070813

Priority

  • EP 07792475 A 20070813
  • JP 2006228476 A 20060824

Abstract (en)

A liquid crystal display device according to the present invention includes a plurality of pixels, each including first and second subpixels. When a predetermined grayscale tone is displayed continuously through four or more consecutive even number of vertical scanning periods, the first and second subpixels have different luminances in at least two of the even number of vertical scanning periods, first polarity periods that are included in the vertical scanning periods and that maintain a first polarity are as long as second polarity periods that are also included in the vertical scanning periods and that maintain a second polarity for each of the first and second subpixels, and in each of the first and second polarity periods, the difference between the average of effective voltages applied to the liquid crystal layer of the first subpixel and that of effective voltages applied to the liquid crystal layer of the second subpixel is substantially equal to zero.

IPC 8 full level

G02F 1/133 (2006.01); G02F 1/1343 (2006.01); G09G 3/20 (2006.01); G09G 3/36 (2006.01)

CPC (source: EP)

G09G 3/3614 (2013.01); G09G 3/3655 (2013.01); G09G 3/3406 (2013.01); G09G 2300/0426 (2013.01); G09G 2300/0443 (2013.01); G09G 2300/0852 (2013.01); G09G 2310/0262 (2013.01); G09G 2320/0673 (2013.01); G09G 2330/04 (2013.01)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK RS

DOCDB simple family (publication)

EP 2056286 A1 20090506; EP 2056286 A4 20090916; EP 2056286 B1 20140716; CN 101506866 A 20090812; CN 101506866 B 20130821; EP 2284828 A1 20110216; EP 2284829 A1 20110216; JP 5043847 B2 20121010; JP WO2008023601 A1 20100107; WO 2008023601 A1 20080228

DOCDB simple family (application)

EP 07792475 A 20070813; CN 200780031269 A 20070813; EP 10015232 A 20070813; EP 10015233 A 20070813; JP 2007065832 W 20070813; JP 2008530861 A 20070813