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:
Sep. 07, 2004
Filed:
Mar. 19, 2002
Applicant:
Inventors:
Hideyuki Kawai, Suwa, JP;
Hirokazu Yamamoto, Fujisawa, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 2/600 ; G02B 6/16 ; G09G 3/34 ;
U.S. Cl.
CPC ...
G02B 2/600 ; G02B 6/16 ; G09G 3/34 ;
Abstract
There is provided an electrophoretic device which comprises an electrophoretic layer containing dispersion medium and electrophoretic particles dispersed in the dispersion medium, controls the position of the electrophoretic particles according to the electric potential applied to electrodes, and can maintain the electrophoretic particles at a desired position for a long time by using the dispersion medium formed of mixture consisting of a plurality of substances having small mutual solubility.