Patent ID: 11888094
Assignee: QUANZHOU SANAN SEMICONDUCTOR TECHNOLOGY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. A fabrication method of the flip-chip LED of claim 1, the method comprising:
providing the sapphire substrate;
fabricating the epitaxial layer over the sapphire substrate, wherein the epitaxial layer comprises: a first semiconductor layer, a second semiconductor layer, and a light emitting layer between the first semiconductor layer and the second semiconductor layer;
etching at least one opening structure downward from a surface of the epitaxial layer, to a surface of the sapphire substrate, thereby exposing the portion of the side wall of the epitaxial layer and the portion of the surface of the sapphire substrate, such that the epitaxial layer is divided into the epitaxial bulk layer and the barrier structure; and
depositing the insulating layer on the at least one opening structure as a metal electrode isolating layer.