COLORED ELECTROPHORETIC DISPLAYS

European Patent Office Patent

APP PUB NO EP-3633662-A1
SERIAL NO

19203126

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Abstract

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An electrophoretic medium comprises a fluid, a first, light scattering particle (1) (typically white) and second (2), third (3) and fourth (4) particles having three subtractive primary colors (typically magenta, cyan and yellow); at least two of these colored particles (2-4) being non-light scattering. The first (1) and second (2) particles bear polymer coatings such that the electric field required to separate an aggregate formed by the third (3) and the fourth (4) particles is greater than that required to separate an aggregate formed from any other two types of particles. Methods for driving the medium to produce white, black, magenta, cyan, yellow, red, green and blue colors are also described.

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Patent Owner(s)

Patent OwnerAddress
E INK CORPUSMASSACHUSETTS MASSACHUSETTS

International Classification(s)

Inventor(s)

Inventor Name Address
LADAVAC KOSTA C/O E INK CORPORATION 1000 TECHNOLOGY PARK DRIVE BILLERICA MASSACHUSETTS 01821-4165 01821-4165
HERB CRAIG A MEDFORD MA
BULL STEPHEN WINDHAM NH
TELFER STEPHEN 40 COLLEGE AVENUE ARLINGTON MASSACHUSETTS 02474-2254 02474-2254
MILLER DAVID DARRELL WAKEFIELD MA
YEZEK LEE C/O E INK CORPORATION 1000 TECHNOLOGY PARK DRIVE BILLERICA MASSACHUSETTS 01821-4165 01821-4165
LATTES ANA L C/O E INK CORPORATION 1000 TECHNOLOGY PARK DRIVE BILLERICA MASSACHUSETTS 01821-4165 01821-4165
MORRISON JENNIFER M WAKEFIELD MA
SLOMINSKI LUKE M SHARON MA
HOOGEBOOM CHRISTOPHER L C/O E INK CORPORATION 1000 TECHNOLOGY PARK DRIVE BILLERICA MASSACHUSETTS 01821-4165 01821-4165
BARYKINA-TASSA OLGA VLADIMIROVNA SAN MATEO CA
MACDONALD BRANDON ARLINGTON MA

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