METHODS FOR DRIVING BISTABLE ELECTRO-OPTIC DISPLAYS

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EP 2 916 312 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	28.10.2015 Bulletin 2015/44

(43)	Date of publication:
	09.09.2015 Bulletin 2015/37

(21)	Application number: 15164029.9

(22)	Date of filing: 20.11.2002

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International Patent Classification (IPC):

G09G 3/36^(2006.01)
G09G 3/34^(2006.01)
G09G 3/20^(2006.01)

G09G 3/32^(2006.01)
G02F 1/167^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

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Priority:

20.11.2001 US 319007 P
21.11.2001 US 319010 P
18.12.2001 US 319034 P
20.12.2001 US 319037 P
21.12.2001 US 319040 P

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	02803692.9 / 1446791

(71)	Applicant: E-Ink Corporation
	Cambridge, MA 02138-1002 (US)

(72)	Inventors:
	ZEHNER, Robert W. Somerville, MA 02144 (US) GATES, Holly G. Somerville, MA 02143 (US) ARANGO, Alexi, C. Somerville, MA 02144-1918 (US) AMUNDSON, Karl R. Cambridge, MA 02138 (US) AU, Joanna, F. Brighton, MA 02135 (US) KNAIAN, Ara, N. Cambridge, MA 02138 (US) ZALESKY, Jonathan L. Cambridge, MA 02141 (US)

(74)	Representative: Hoffmann Eitle
	Patent- und Rechtsanwälte PartmbB Arabellastraße 30 81925 München 81925 München (DE)


	Remarks:
	This application was filed on 17-04-2015 as a divisional application to the application mentioned under INID code 62.

(54)	METHODS FOR DRIVING BISTABLE ELECTRO-OPTIC DISPLAYS

(57) A bistable electro-optic display has a plurality of pixels, each of which is capable of displaying at least three gray levels. The display is driven by a method comprising: storing a look-up table containing data representing the impulses necessary to convert an initial gray level to a final gray level; storing data representing at least an initial state of each pixel of the display; receiving an input signal representing a desired final state of at least one pixel of the display; and generating an output signal representing the impulse necessary to convert the initial state of the one pixel to the desired final state thereof, as determined from the look-up table. The invention also provides a method for reducing the remnant voltage of an electro-optic display.