WO2005029458 METHODS FOR REDUCING EDGE EFFECTS IN ELECTRO-OPTIC DISPLAYS

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Publication Number WO/2005/029458

Publication Date 31.03.2005

International Application No. PCT/US2004/030440

International Filing Date 17.09.2004

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Applicants

E INK CORPORATION [US]/[US] (AllExceptUS)
ZEHNER, Robert, W. [US]/[US] (UsOnly)
AMUNDSON, Karl, R. [US]/[US] (UsOnly)

Inventors

ZEHNER, Robert, W.
AMUNDSON, Karl, R.

Agents

COLE, David, John

Priority Data

60/481,400

19.09.2003

Publication Language English (en)

Filing Language English (EN)

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Title

(EN) METHODS FOR REDUCING EDGE EFFECTS IN ELECTRO-OPTIC DISPLAYS

(FR) PROCEDE DE REDUCTION D'EFFETS DE BORD DANS DES AFFICHEURS

Abstract

(EN) Edge effects in electro-optic displays are reduced by (a) ensuring that during rewriting of the display, the last period of non-zero voltage applied all pixels terminates at substantially the same time; and (b) scanning the display at a scan rate of at least 50 Hz.

(FR) Ont réduit les effets de bord dans des affiches rétro optiques qu'elles (a) en faisant en sorte que durant la réécriture de l'afficheur, la dernière période de tension non nulle appliquée à tous les pixels se termine sensiblement en même temps et,(b) en balayant les afficheurs à une vitesse de balayage d'au moins 50 Hz.

G	PHYSICS
09	EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G	ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3	Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20	for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
34	by control of light from an independent source

G	PHYSICS
09	EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G	ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3	Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20	for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
34	by control of light from an independent source

G	PHYSICS
09	EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G	ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2310	Command of the display device
06	Details of flat display driving waveforms

G	PHYSICS
09	EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G	ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2310	Command of the display device
06	Details of flat display driving waveforms
061	for resetting or blanking

G	PHYSICS
09	EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G	ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2310	Command of the display device
06	Details of flat display driving waveforms
065	Waveforms comprising zero voltage phase or pause

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1. WO2005029458 - METHODS FOR REDUCING EDGE EFFECTS IN ELECTRO-OPTIC DISPLAYS

G	PHYSICS
09	EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G	ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2320	Control of display operating conditions
02	Improving the quality of display appearance
0209	Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display

G	PHYSICS
09	EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G	ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2320	Control of display operating conditions
02	Improving the quality of display appearance
0209	Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display