US Patent No. 10,270,013

WAVELENGTH CONVERTED SEMICONDUCTOR LIGHT EMITTING DEVICE


Patent No. 10,270,013
Issue Date April 23, 2019
Title Wavelength Converted Semiconductor Light Emitting Device
Inventorship April Dawn Schricker, San Jose, CA (US)
Oleg Borisovich Shchekin, San Jose, CA (US)
Han Ho Choi, San Jose, CA (US)
Peter Josef Schmidt, San Jose, CA (US)
Assignee LUMILEDS LLC, San Jose, CA (US)

Claim of US Patent No. 10,270,013

1. A method comprising:forming a plurality of wavelength converting elements, said forming comprising:
forming a first wavelength converting layer, the first wavelength converting layer being a wavelength converting ceramic,
forming a second wavelength converting layer, the second wavelength converting layer including a wavelength converting material mixed in a binder material;
fusing the second wavelength converting layer to the first wavelength converting layer to produce a composite sheet that includes the first wavelength converting layer and the second wavelength converting layer, and
dicing the composite sheet to form the plurality of wavelength converting elements, the dicing being performed after the first wavelength converting layer and the second wavelength converting layer are fused; and
attaching each of the wavelength converting elements to a different one of a plurality of semiconductor light emitting devices such that, for each of the wavelength converting elements, the first wavelength converting layer is disposed between the second wavelength converting layer and the semiconductor light emitting devices.