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:
Jun. 17, 2014
Filed:
Mar. 04, 2009
Daisuke Abe, Chino, JP;
Daisuke Abe, Chino, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An electrophoretic device includes: an electrophoretic layer including a plurality of first particles having a relatively high mobility and charged with negative electricity and a plurality of second particles having a relatively low mobility and charged with positive electricity; a first electrode and a second electrode facing each other via the electrophoretic layer; and a control unit applying a first voltage between the first and the second electrodes to control such that the first electrode is at a higher potential than the second electrode and applying a pulse-form second voltage between the first and the second electrodes intermittently a plurality of number of times to control such that the first electrode is at a lower potential than the second electrode, each second voltage applied by the control unit the plurality of number of times having an approximately same pulse width and an approximately same voltage value, as well as the number of times of application of the second voltage being determined based on a desired gradation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile