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:
Mar. 17, 2015
Filed:
Aug. 31, 2012
Applicants:
Robbie Rattray, Calgary, CA;
David Popovich, Calgary, CA;
Inventors:
Robbie Rattray, Calgary, CA;
David Popovich, Calgary, CA;
Assignee:
SMART Technologies ULC, , CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 3/042 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0425 (2013.01); G06F 2203/04109 (2013.01);
Abstract
An interactive panel comprises an optical waveguide within which totally internally reflected (TIR) illumination propagates, a display device beneath the optical waveguide and a partially transparent layer beneath the display device. The partially transparent layer reflects backlight illumination towards the display device and at least allows TIR illumination escaping from the optical waveguide and passing through the optical waveguide and the display panel, as a result of one or more contacts made on the optical waveguide, to pass therethrough.