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Machine translation
1. (WO2001027912) METHOD OF DRIVING LIQUID CRYSTALS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2001/027912    International Application No.:    PCT/SE2000/001987
Publication Date: 19.04.2001 International Filing Date: 13.10.2000
Chapter 2 Demand Filed:    04.05.2001    
IPC:
G09G 3/36 (2006.01)
Applicants: LC-TEC SWEDEN AB [SE/SE]; Tunavägen 281, S-781 73 Borlänge (SE) (For All Designated States Except US).
QUICKERS, Björn [SE/SE]; (SE) (For US Only)
Inventors: QUICKERS, Björn; (SE)
Agent: ESTREEN, Lars; Kransell & Wennborg AB, Box 27834, S-115 93 Stockholm (SE)
Priority Data:
9903729-3 15.10.1999 SE
Title (EN) METHOD OF DRIVING LIQUID CRYSTALS
(FR) PROCÉDÉ DE COMMANDE DE CRISTAUX LIQUIDES
Abstract: front page image
(EN)A method for changing a reflectance state of a row and column array of bistable liquid crystals making up picture elements of a liquid crystal display is provided. The method is based on the insight, that less power is consumed when driving bistable cholesteric liquid crystals if the picture of the display is analysed and the driving adapted to the nature of the picture. Thus, the number of desired state changes between picture elements of adjacent rows and in the same column is counted and the polarity of the control voltage is adapted thereto.
(FR)L'invention concerne un procédé permettant de changer l'état de réflectance d'un réseau de colonnes et de rangées de cristaux liquides constituant des éléments d'image d'un affichage à cristaux liquides. Ce procédé est basé sur l'idée que la consommation d'énergie est moindre lorsqu'on commande des cristaux liquides cholestériques bistables si l'image de l'affichage est analysée, et si la commande est adaptée à la nature de ladite image. En conséquence, le nombre de changements d'états désirés entre les éléments d'image de rangées adjacentes et dans la même colonne est compté, et la polarité de la tension de commande est également adaptée.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)