The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 2010
Filed:
Jan. 23, 2007
Richard J. Paolini, Jr., Framingham, MA (US);
George G. Harris, Woburn, MA (US);
Charles Howie Honeyman, Roslindale, MA (US);
Craig A. Herb, Medford, MA (US);
Richard M. Webber, Brookline, MA (US);
Thomas H. Whitesides, Somerville, MA (US);
Richard J. Paolini, Jr., Framingham, MA (US);
George G. Harris, Woburn, MA (US);
Charles Howie Honeyman, Roslindale, MA (US);
Craig A. Herb, Medford, MA (US);
Richard M. Webber, Brookline, MA (US);
Thomas H. Whitesides, Somerville, MA (US);
E Ink Corporation, Cambridge, MA (US);
Abstract
The image stability of electrophoretic media, comprising a plurality of particles disposed in a fluid and capable of moving through the fluid upon application of an electric field to the medium, can be improved by including in the fluid either a polystyrene or an aggregating diblock copolymer which forms micelle-like structures in the fluid, the diblock copolymer having a first block soluble in the fluid and a second block not swellable by the fluid. In variable transmission electrophoretic media, haze can be reduced by using as the fluid a mixture of a partially hydrogenated aromatic hydrocarbon and a terpene.