US Patent No. 10,347,800

LIGHT EMITTING DEVICE WITH NANOSTRUCTURED PHOSPHOR


Patent No. 10,347,800
Issue Date July 09, 2019
Title Light Emitting Device With Nanostructured Phosphor
Inventorship Debasis Bera, San Jose, CA (US)
Mark Melvin Butterworth, Santa Clara, CA (US)
Oleg Borisovich Shchekin, San Francisco, CA (US)
Assignee LUMILEDS LLC, San Jose, CA (US)

Claim of US Patent No. 10,347,800

1. A structure comprising:a semiconductor light emitting device; and
a wavelength converting region comprising:
a nanostructured wavelength converting material configured to absorb pump light and emit converted light, the nanostructured wavelength converting material comprising particles having at least one dimension that is no more than 100 nm in length;
a phosphor in direct contact with the nanostructured wavelength converting material;
a reflector configured to be more reflective of pump light and less reflective of converted light; and
a transparent matrix in which the nanostructured wavelength converting material is disposed;
wherein a spacing between the wavelength converting region and the semiconductor light emitting device is greater than 0 mm and no more than 10 mm.