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. 26, 2005
Filed:
Sep. 29, 2003
Lorne A. Whitehead, Vancouver, CA;
Michele Ann Mossman, Vancouver, CA;
Lorne A. Whitehead, Vancouver, CA;
Michele Ann Mossman, Vancouver, CA;
The University of British Columbia, Vancouver, CA;
Abstract
A reflective display having a plurality of approximately hemispherical high refractive index (η) transparent hemi-beads substantially covering and protruding inwardly from a transparent sheet's inward surface. The transparent sheet, which has an outward viewing surface, has a refractive index (η) which can be low (i.e. η≈1.92 and η≈1.59). A member is selectably moved into an intense evanescent wave region at the hemi-beads' inward side to selectably frustrate substantial total internal reflection of light rays. The member can be a plurality of light scattering particles suspended in a low refractive index (η≈1.27) electrophoresis medium and electrophoretically moved into or out of the intense evanescent wave region.