Colored electrophoretic displays

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United States of America Patent

PATENT NO 9921451
SERIAL NO

14849658

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Abstract

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An electrophoretic medium comprises a fluid, a first, light scattering particle (typically white) and second, third and fourth particles having three subtractive primary colors (typically magenta, cyan and yellow); at least two of these colored particles being non-light scattering. The first and second particles bear polymer coatings such that the electric field required to separate an aggregate formed by the third and the fourth 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 CORPORATION1000 TECHNOLOGY PARK DRIVE BILLERICA MA 01821-4165

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Barykina-Tassa, Olga Vladimirovna Boston, US 17 115
Bull, Stephen Windham, US 27 295
Herb, Craig A Medford, US 46 3588
Ladavac, Kosta Somerville, US 51 474
MaCDonald, Brandon Arlington, US 15 141
Miller, David Darrell Wakefield, US 27 295
Morrison, Jennifer M Watertown, US 19 282
Slominski, Luke M Melrose, US 20 278
Telfer, Stephen J Alrington, US 236 2435
Yezek, Lee Watertown, US 34 437

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