Global Patent Index - EP 2024955 A2

EP 2024955 A2 2009-02-18 - METHODS FOR DRIVING ELECTRO-OPTIC DISPLAYS

Title (en)

METHODS FOR DRIVING ELECTRO-OPTIC DISPLAYS

Title (de)

VERFAHREN ZUR ANSTEUERUNG ELEKTROOPTISCHER ANZEIGEN

Title (fr)

PROCEDES DE COMMANDE D'AFFICHAGES ELECTRO-OPTIQUES

Publication

EP 2024955 A2 (EN)

Application

EP 07797678 A

Priority

  • US 2007069529 W
  • US 80330506 P
  • US 80449106 P

Abstract (en)

[origin: WO2007140202A2] Methods are provided for of driving a bistable electro-optic display having at least first and second pixels separated by an inter-pixel gap. In one method, there is applied to the first pixel a drive pulse which drives the pixel to one extreme optical state, and there is applied to the second pixel, which is in this extreme optical state, a reinforcing pulse of the same polarity as the drive pulse. In a second method, a drive pulse applied to the first pixel drives that pixel away from one extreme optical state, and an inverse reinforcing pulse applied to the second pixel is of opposite polarity to the drive pulse. The drive methods reduce edge ghosting or blooming.

IPC 8 full level (invention and additional information)

G09G 3/14 (2006.01); G02B 26/00 (2006.01); G09G 3/18 (2006.01); G09G 3/28 (2006.01)

CPC (invention and additional information)

G09G 3/344 (2013.01); G09G 2310/06 (2013.01); G09G 2320/0209 (2013.01); G09G 2320/066 (2013.01)

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

EPO simple patent family

WO 2007140202 A2 20071206; WO 2007140202 A3 20080515; EP 2024955 A2 20090218; EP 2024955 A4 20100915; JP 2009538451 A 20091105; JP 2012177944 A 20120913; JP 5186492 B2 20130417; JP 5409845 B2 20140205

INPADOC legal status


2011-06-22 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20091201

2010-09-15 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20100813

2009-09-02 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) (DELETED)

2009-02-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20081103

2009-02-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): 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

2009-02-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL BA HR MK RS