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. 06, 2001
Filed:
Sep. 16, 1998
Joseph Grover Gordon, II, San Jose, CA (US);
Mark Whitney Hart, San Jose, CA (US);
Sally Ann Swanson, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A transmissive electrophoretic color display is comprised of a plurality of color pixels; each uniformly illuminated from the rear by a backlight and each comprised of at least two electrophoretic cells. Each cell is comprised of a suspension of charged, black or colored light-absorbing pigment particles in a light-transmissive fluid. Each cell is also comprised of a light-transmissive front and rear window, at least one non-obstructing counter electrode, at least one non-obstructing collecting electrode, and a color filter medium. The cells of different colors are in a laterally adjacent relationship to each other and the charged pigment particles are responsive to the electrodes. The filter medium in each cell can be a light-transmissive color filter element or the pigment suspension fluid can be colored and serve as the filter medium.