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:
Jan. 21, 2014
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 plurality of blue LEDs operable to generate blue excitation light and a light emitting display surface comprising a light transmissive substrate and at least one 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 other than blue. Regions of the display surface intended to generate blue light do not include the phosphor.