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. 28, 2004
Filed:
Mar. 21, 2002
Hiroki Iwanaga, Kanagawa-ken, JP;
Hideyuki Nakao, Kanagawa-ken, JP;
Masayuki Oguchi, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An electrophoresis display capable of displaying colors, yet having high contrast and a high reflectance on displaying white color. The electrophoresis display device includes a dispersion medium containing a liquid crystal and electrophoretic particles made of titania, etc. being dispersed in the dispersion medium, wherein the dispersion medium contains a dichroic coloring matter having dichroism with a high dichroic ratio as a first coloring matter and a dichroic coloring matter having dichroism with a low dichroic ratio and/or an isotropic coloring matter as a second coloring matter, provided that the first coloring matter and the second coloring matter have complementary colors each other. In this manner, white, black, and color displays are realized by a single capsule.