Patent ID: 11912918
Assignee: LUMILEDS, LLC
Field: Surface technology, coating (Chemistry)
Classification: CPC C  F  H | IPC C  F  H

Claim 6:
7. The method according to claim 1, wherein the main sol-gel coating process comprises:
providing a mixture of an alcohol, ammonia, water, the particulate luminescent material having the primer layer and the first ALD layer and the second ALD layer, and a metal alkoxide precursor while agitating the mixture, and allowing a main sol-gel coating layer to be formed directly onto the second ALD layer, the metal alkoxide precursor is titanium alkoxide, silicon alkoxide, and or aluminum alkoxide; and
retrieving the particulate luminescent material having the primer layer, the first ALD layer and the second ALD layer and the main sol-gel coating layer from the mixture and subjecting the retrieved particulate luminescent material having the primer layer, the first ALD layer and the second ALD layer and the main sol-gel coating layer to a heat treatment.