EP 1277194 A1 20030122 - LOW POWER LCD DRIVING SCHEME
Title (en)
LOW POWER LCD DRIVING SCHEME
Title (de)
LEISTUNGSARMES ANSTEUERSCHEMA FÜR FLÜSSIGKRISTALLANZEIGEVORRICHTUNG
Title (fr)
MECANISME BASSE PUISSANCE DE COMMANDE D'AFFICHEUR A CRISTAUX LIQUIDES
Publication
Application
Priority
- US 0112989 W 20010420
- US 56027900 A 20000426
Abstract (en)
[origin: WO0182284A1] A method of driving passive liquid crystal displays at power levels lower than conventional driving schemes is described. A modified amplitude selection scheme is used, in which a plurality of row scan sequences are used to determining display operating states that display the same information with a lower power requirement. Row scan sequences are used to scan the display by cycling through a plurality of sequences, and one of the sequences that result in reduced power consumption is chosen. The invention describes methods and apparatus for scanning, cycling and triggering scanning displays to find low power states. Other embodiments include fixed, nonsequential row scan sequences. This invention has the further advantage of being compatible with and extending the usefulness of conventional passive liquid crystal display units.
IPC 1-7
IPC 8 full level
G02F 1/133 (2006.01); G09G 3/20 (2006.01); G09G 3/28 (2013.01); G09G 3/288 (2013.01); G09G 3/291 (2013.01); G09G 3/30 (2006.01); G09G 3/36 (2006.01)
CPC (source: EP KR)
G09G 3/2092 (2013.01 - EP); G09G 3/36 (2013.01 - KR); G09G 3/3622 (2013.01 - EP); G09G 2310/0213 (2013.01 - EP); G09G 2310/0267 (2013.01 - EP); G09G 2330/023 (2013.01 - EP); G09G 2360/18 (2013.01 - EP)
Citation (search report)
See references of WO 0182284A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0182284 A1 20011101; AU 5557001 A 20011107; CN 1432173 A 20030723; EP 1277194 A1 20030122; JP 2003532148 A 20031028; KR 20030010607 A 20030205
DOCDB simple family (application)
US 0112989 W 20010420; AU 5557001 A 20010420; CN 01810271 A 20010420; EP 01928745 A 20010420; JP 2001579288 A 20010420; KR 20027014296 A 20021024