Patent ID: 11923482
Assignee: LUMILEDS, LLC
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 11:
12. A light emitting device comprising:
a light emitting diode; and
a phosphor layer formed on the light emitting diode, the phosphor layer comprising:
a plurality of phosphor particles;
interstices between the phosphor particles;
a silicone or sol-gel matrix material not in contact with the light emitting diode disposed in a portion of the interstices; and
a plurality of cavities situated in a remaining portion of the interstices, at least one of the plurality of cavities having a first side adjacent to the silicone or sol-gel matrix material and a second side adjacent to the at least one of the plurality of phosphor particles, and at least another one of the plurality of cavities having all sides adjacent to at least one of the plurality of phosphor particles.