VARIABLE TRANSMISSION ELECTROPHORETIC DEVICES

Title:

VARIABLE TRANSMISSION ELECTROPHORETIC DEVICES

Document Type and Number:

WIPO Patent Application WO/2018/232075

Kind Code:

A3

Abstract:

A variable transmission film may include an electrophoretic medium having a plurality of capsules and a binder, each capsule containing a plurality of electrically charged particles and a fluid, the charged particles being movable by application of an electric field and being capable of being switched between an open state and a closed state. The film may include at least one of a binder containing fish gelatin and a polyanion; a binder containing one or more tinting agents; capsules containing charge control agents, such as an oligoamine-terminated polyolefin and a branched chain fatty acid comprising at least 8 carbon atoms; a selection of capsules in which at least 60% have a diameter between 50 µm and 90 µm and at least 15% have a diameter between 20 µm and 49 µm; a tinted adhesive layer; and a fluid selected from one or more nonconjugated olefinic hydrocarbons.

Inventors:

WIDGER PETER CARSTEN BAILEY (US)
ANSETH JAY WILLIAM (US)
PAOLINI RICHARD J (US)
ROMANOWSKY MARK BENJAMIN (US)
SMITH JILLIAN (US)
TELFER STEPHEN J (US)
BREEN CRAIG ALAN (US)
BULL STEPHEN (US)

Application Number:

PCT/US2018/037479

Publication Date:

February 14, 2019

Filing Date:

June 14, 2018

Export Citation:

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Assignee:

E INK CORP (US)

International Classes:

G02F1/167; G02F1/16757; G02F1/1677

Foreign References:

US20050213191A1	2005-09-29
US20050237599A1	2005-10-27
US20170097556A1	2017-04-06
US20150277205A1	2015-10-01
US20070002427A1	2007-01-04
US20150248045A1	2015-09-03
US20140376081A1	2014-12-25
US20160246154A1	2016-08-25

Other References: