Invention Grant
- Patent Title: Methods and devices for light extraction from a group III-nitride volumetric LED using surface and sidewall roughening
-
Application No.: US15226656Application Date: 2016-08-02
-
Publication No.: US10043946B2Publication Date: 2018-08-07
- Inventor: Rafael Aldaz , Aurelien J. F. David , Daniel F. Feezell , Thomas M. Katona , Rajat Sharma , Michael J. Cich
- Applicant: SORAA, INC.
- Applicant Address: US CA Freemont
- Assignee: Soraa, Inc.
- Current Assignee: Soraa, Inc.
- Current Assignee Address: US CA Freemont
- Agency: FisherBroyles LLP
- Main IPC: H01L33/22
- IPC: H01L33/22 ; H01L33/32 ; H01L33/00 ; H01L33/20

Abstract:
A method of fabricating LEDs from a wafer comprising a substrate and epitaxial layers and having a substrate side and a epitaxial side, said method comprising: (a) applying a laser beam across at least one of said substrate side or said epitaxial side of said wafer to define at least one laser-scribed recess having a laser-machined surface; and (b) singulating said wafer along said laser-scribed recess to form singulated LEDs, said singulated LEDs having a top surface, a bottom surface, and a plurality of sidewalls, at least one of said sidewalls comprising at least a first portion comprising at least a portion of said laser-machined surface.
Public/Granted literature
Information query
IPC分类: