Patent · US Active

Electrophoretic medium and process for the production thereof

US7848007B2 · kind B2 · utility

42Cited by

143References

7Claims

0Family size

Assignee

E Ink Holdings Inc. · TW

Inventors

Richard J. Paolini, Jr. · Framingham, US
David Darrell Miller · Wakefield, US
Barrett Comiskey · Cambridge, US
Joseph M. Jacobson · Newton, US
Bin Wu · Sharon, US
Charles Howie Honeyman · Brookline, US
Jian Lin · Acton, US

Key dates

Filing date	Jul 3, 2008
Grant date	Dec 7, 2010
Priority date	—
Expiry date	Jul 3, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG02F1/167
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A two-phase electrophoretic medium comprises a continuous phase and a discontinuous phase. The discontinuous phase comprises a plurality of droplets, each of which comprises a suspending fluid and at least one particle disposed within the suspending fluid and capable of moving through the fluid upon application of an electric field to the electrophoretic medium. The continuous phase surrounds and encapsulates the discontinuous phase. To reduce the humidity sensitivity of the medium, a non-ionizable or crystalline polymer may be used as the continuous phase.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.