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:
Apr. 20, 2004
Filed:
Mar. 21, 2002
Hideyuki Nakao, Kanagawa-ken, JP;
Teruo Murakami, Kanagawa-ken, JP;
Sadao Kajiura, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
Electrophoresis display devices using charged particles which move in each cell in accordance with the electrophoresis caused by electrodes neighboring the cell. First through third electrodes are used to provide the electrophoresis to the charged particles in a dispersion liquid of each cell. The first and the second electrodes are formed in parallel with each other on a side of a first board and the third electrode is formed on a second board to intersect with the first and the second electrodes. The first electrode may be applied with an initial voltage, a first hold voltage and a rewriting voltage between the initial voltage and the first hold voltage in an order of the first voltage, the rewriting voltage and the first hold voltage. The second electrode may be applied with intermediary voltage between the initial voltage and the rewriting voltage to the first electrode. The third electrode may be applied with a color display voltage different from the intermediary voltage and second holds voltage in synchronism with the first hold voltage. The dispersion liquid may be sealed by a microcapsule or the like and a position of the microcapsule may be fixed by a projection formed on one of the boards.