Global Patent Index - EP 2237261 A1

EP 2237261 A1 20101006 - Repeated-scan driving method for field sequential color liquid crystal display

Title (en)

Repeated-scan driving method for field sequential color liquid crystal display

Title (de)

Wiederholtes Abtastantriebsverfahren für eine feldsequentielle Farbflüssigkristallanzeige

Title (fr)

Procédé de commande de balayage répété pour affichage couleur à cristaux liquides séquentiel de champ

Publication

EP 2237261 A1 20101006 (EN)

Application

EP 09156874 A 20090331

Priority

EP 09156874 A 20090331

Abstract (en)

The present invention discloses a REPEATED-SCAN driving method, which applies to a field sequential color liquid crystal display, wherein each sequential-color cycle (31) of the multiplex-scan signal (30) has at least two stages of scans (32) to increase the luminous fluxes of all colors of backlights (20) and bring closer the total amounts of fluxes, whereby is achieved higher color saturation and better flux uniformity between the rows. Further, the method of the present invention controls the backlights (20) to form dark stages (21) between the intervals respectively of two different colors of the backlights (20) and controls the dark stage (21) to coincide with a color-mixing interval, which is caused by response delay of liquid crystal, to prevent from color distortion caused by color mixing. Therefore, the present invention can generate the pure colors and the designed derived colors accurately.

IPC 8 full level

G09G 3/36 (2006.01); G09G 3/34 (2006.01)

CPC (source: EP)

G09G 3/3413 (2013.01); G09G 3/3622 (2013.01); G09G 2310/0235 (2013.01); G09G 2320/0242 (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 HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA RS

DOCDB simple family (publication)

EP 2237261 A1 20101006

DOCDB simple family (application)

EP 09156874 A 20090331