公开(公告)号：US20220212291A1

公开(公告)日：2022-07-07

申请号：US17503363

申请日：2021-10-18

Applicant: Samsung Display Co., LTD.

Inventor： Akifumi Sangu ,  Je Kil Ryu ,  Cheol Ho Park ,  Hae Sook Lee ,  Jin Hong Jeun ,  Young Su Chae ,  Gyoo Wan Han

IPC: B23K26/50 ,  B23K26/06

Abstract: A laser crystallization apparatus according to an embodiment includes a light source unit irradiating a laser beam; and an optical unit to which the laser beam is incident, wherein the optical unit includes a first portion and a second portion bonded to each other on a bonded surface, and a first width of the first portion and a second width of the second portion are the same as each other on the bonded surface based on a direction parallel to the incident direction of the laser beam.