公开(公告)号：US20210313548A1

公开(公告)日：2021-10-07

申请号：US17131254

申请日：2020-12-22

Applicant: Samsung Display Co., Ltd

Inventor： Youngkwang LEE ,  Sangyun LEE ,  Jaemin HONG

IPC: H01L51/56

Abstract: Provided are a mask frame assembly in which deformation of a frame may be reduced, and a method of manufacturing an organic light-emitting display apparatus using the mask frame assembly. The mask frame assembly includes a frame of a rectangular shape, the frame including an opening and a lower surface including first grooves extending in a first direction, a plurality of first auxiliary sticks extending in the first direction across the opening, wherein a first end and a second end of each of the first auxiliary sticks are bonded to an upper surface of the frame, a mask on the plurality of first auxiliary sticks, and a plurality of second auxiliary sticks arranged in the first grooves, wherein one end and an opposite end of each of the plurality of second auxiliary sticks are bonded to a bottom surface in each of the first grooves.