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:
Nov. 06, 2012
Filed:
May. 06, 2011
Yi-qun LI, Danville, CA (US);
Yi Dong, Tracy, CA (US);
James Caruso, Albuquerque, NM (US);
Charles Edwards, Pleasanton, CA (US);
Yi-Qun Li, Danville, CA (US);
Yi Dong, Tracy, CA (US);
James Caruso, Albuquerque, NM (US);
Charles Edwards, Pleasanton, CA (US);
Intematix Corporation, Fremont, CA (US);
Abstract
A light emitting sign comprising a light box housing a plurality of blue LEDs operable to generate blue excitation light and a light emitting display surface overlaying the light box opening. The light emitting display surface comprises a light transmissive substrate configured as a light transmissive window such that light generated by the sign is emitted from the substrate and a phosphor overlaying at least a portion of one face of the substrate. The phosphor is configured to absorb at least a portion of the blue light generated by the LEDs and, in response, to emit light of a selected color.