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. 21, 2006
Filed:
Apr. 11, 2005
Michio Arai, Kanagawa, JP;
Eriko Matsui, Kanagawa, JP;
Kenji Shinozaki, Tokyo, JP;
Toyoharu Oohata, Kanagawa, JP;
Michio Arai, Kanagawa, JP;
Eriko Matsui, Kanagawa, JP;
Kenji Shinozaki, Tokyo, JP;
Toyoharu Oohata, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
The invention provides an electrochromic display unit with high-quality display. The display unit comprises a transparent electrode (), a display layer () which is formed on the transparent electrode () and which changes a color according to the amount of accumulated electrical charges, and an ion conductive layer () formed on the display layer (). A plurality of picture electrodes () are formed on the ion conductive layer () on the side opposite to the display layer (). The picture electrodes () are driven independently by, for example, a corresponding thin film transistors (). In driving, by applying a drive current having given amount of electrical charges and then applying a certain amount of an inverted current, a certain amount of coloration is deducted, and extra coloration of the display layer () is eliminated.