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:
Feb. 16, 2010
Filed:
Sep. 17, 2007
Shigenobu Hirano, Yokohama, JP;
Takuji Kato, Yokohama, JP;
Hiroyuki Takahashi, Yokohama, JP;
Ikue Kawashima, Yokohama, JP;
Takeshi Shibuya, Yokohama, JP;
Shigenobu Hirano, Yokohama, JP;
Takuji Kato, Yokohama, JP;
Hiroyuki Takahashi, Yokohama, JP;
Ikue Kawashima, Yokohama, JP;
Takeshi Shibuya, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Multicolor display elements are disclosed that are adapted to full color electric papers, which comprises a display electrode, counter electrode, electrolyte, and display layer, wherein the counter electrode is disposed oppositely to the display electrode, the electrolyte is filled into a space provided between the display electrode and the counter electrode, the display layer is disposed on the surface, which faces the counter electrode, of the display electrode, the display layer contains plural electrochromic compositions in a condition that the plural electrochromic compositions are separated into plural layers within the display layer or are mixed together within the display layer, and at least one of threshold voltage for coloring condition and threshold voltage for decoloring condition, or at least one of charge amount required for coloring into a sufficient color density and charge amount required for sufficiently decoloring, are substantially different each other between the plural electrochromic compositions.