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:
Dec. 11, 2018
Filed:
Jun. 17, 2016
Applicant:
E Ink Corporation, Billerica, MA (US);
Inventors:
Harunobu Komatsu, Matsumoto, JP;
Masahiko Nakazawa, Matsumoto, JP;
Kiyoshi Nakamura, Matsumoto, JP;
Hiroki Nakahara, Shiojiri, JP;
Assignee:
E Ink Corporation, Billerica, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 26/00 (2006.01); G02B 26/08 (2006.01); G02F 1/29 (2006.01); C09D 5/44 (2006.01); G02F 1/167 (2006.01);
U.S. Cl.
CPC ...
C09D 5/4419 (2013.01); G02F 2001/1678 (2013.01);
Abstract
According to the invention, an electrophoretic dispersion liquid includes at least one type of an electrophoretic particle, and a dispersion medium, in which the content of transition metal of group 8 elements derived from a catalyst which is used to generate at least one of a block copolymer (a particle surface treatment agent) used to form the electrophoretic particle and the dispersion medium is in a range of greater than 0 ppm to equal to or less than 2 ppm in the electrophoretic dispersion liquid.