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:
Aug. 28, 2018
Filed:
Jan. 11, 2017
Applicant:
E Ink California, Llc, Fremont, CA (US);
Inventors:
Lin Shao, Fremont, CA (US);
Haiyan Gu, Fremont, CA (US);
Ming Wang, Fremont, CA (US);
Vladimir Sofiyev, Oakland, CA (US);
Assignee:
E INK CALIFORNIA, LLC, Fremont, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 26/00 (2006.01); G02B 27/00 (2006.01); G02F 1/167 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0018 (2013.01); G02F 1/167 (2013.01); G02F 2001/1672 (2013.01); G02F 2001/1678 (2013.01);
Abstract
Methods for improving the performance of electrophoretic media with the addition of acetylene surfactants comprising hydroxyl groups. In particular, the described acetylene surfactants reduce ghosting while improving the contrast ratio in electrophoretic displays.