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:
Aug. 02, 2011
Filed:
Jan. 15, 2009
Carlo Scianna, Des Plaines, IL (US);
Munir H. Nayfeh, Urbana, IL (US);
Abdulrahman Al-muhanna, King Abdulaziz City of Science and Technology, SA;
Carlo Scianna, Des Plaines, IL (US);
Munir H. Nayfeh, Urbana, IL (US);
Abdulrahman Al-Muhanna, King Abdulaziz City of Science and Technology, SA;
Goeken Group Corp., Naperville, IL (US);
Abstract
Multiple films of red-green-blue (RGB) luminescent silicon nanoparticles are integrated in a cascade configuration as a top coating in an ultraviolet/blue light emitting diode (LED) to convert it to a white LED. The configuration of RGB luminescent silicon nanoparticle films harnesses the short wavelength portion of the light emitted from the UV/blue LED while transmitting efficiently the longer wavelength portion. The configuration also reduces damaging heat and/or ultraviolet effects to both the device and to humans.