US Patent No. 10,186,645

WHITE-APPEARING SEMICONDUCTOR LIGHT-EMITTING DEVICES HAVING A TEMPERATURE SENSITIVE LOW-INDEX PARTICLE LAYER


Patent No. 10,186,645
Issue Date January 22, 2019
Title White-appearing Semiconductor Light-emitting Devices Having A Temperature Sensitive Low-index Particle Layer
Inventorship Marcel R. Bohmer, Eindhoven (NL)
Kentaro Shimizu, San Jose, CA (US)
Jacobus Johannes Franciscus Gerardus Heuts, Eindhoven (NL)
Assignee Lumileds LLC, San Jose, CA (US)

Claim of US Patent No. 10,186,645

1. A structure comprising:a semiconductor light emitting device; a wavelength-converting layer disposed over the semiconductor light emitting device; and
a light-scattering layer disposed over the wavelength-converting layer, the light-scattering layer including a phase-changing material suspended in a binding material, the phase-changing material being arranged to transition from a solid phase into a liquid phase when the light-scattering layer is heated by the semiconductor light emitting device, the phase-changing material having a lower index of refraction in the liquid phase then in the solid phase.