LAMINATION COATING FOR SAPPHIRE SUBSTRATE

摘要

PROBLEM TO BE SOLVED: To provide a coating for enhancing the under substrate so as to be used as a window of electronic equipment.SOLUTION: A lamination coating of a sapphire component is disclosed. The sapphire component includes one or more alumina layers bonded to the surface of a sapphire member. At least a first alumina layer is bonded to the surface of the sapphire member to bury all the defective parts on the surface, thereby forming a novel layer separated from a damage.