公开(公告)号：US20180374985A1

公开(公告)日：2018-12-27

申请号：US15630660

申请日：2017-06-22

Applicant: EPISTAR CORPORATION

Inventor： Chih-hao CHEN ,  Yi-Lun CHOU ,  Wei-Chih PENG

IPC: H01L33/00 ,  H01L33/10

Abstract: The present disclosure provides a method of forming a light-emitting device comprising: providing a growth substrate having a front side and a rear side; forming a sacrificial layer on the front side of the growth substrate; forming a protective structure on the sacrificial layer; forming a light-emitting structure on the protective structure, wherein the light-emitting structure emits a first peak wavelength; providing a carrier; joining the carrier and the light-emitting structure; and transforming the sacrificial layer by irradiating a laser beam from the rear side to separate the growth substrate from the light-emitting structure, wherein the laser beam emits a second peak wavelength, and wherein the protective structure reflects the second peak wavelength away from the light-emitting structure.