公开(公告)号：US20200152876A1

公开(公告)日：2020-05-14

申请号：US16563619

申请日：2019-09-06

Applicant: Samsung Display Co., Ltd.

Inventor： In-bae KIM ,  Minho MOON ,  Youngho PARK ,  Sungsoon IM

IPC: H01L51/00 ,  H01L27/32 ,  H01L51/56 ,  C23C14/24 ,  C23C14/04 ,  B23K26/22 ,  B23K26/352

Abstract: Provided is a mask assembly including a mask sheet including a pattern part with at least one opening part, and a welding part connected to the pattern part, and a mask frame with the mask sheet mounted thereon and welded to the welding part. The mask sheet includes a first surface configured to fact the mask frame and a second surface opposite to the first surface. The welding part includes a hatching area in which a surface roughness of the second surface is larger than that of the second surface in the pattern part.