Patent ID: 11877500
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A mask assembly comprising:
a mask including a pattern region where openings are formed, the mask extending in a first direction; and
a blocking stick disposed under the mask, overlapping a first side portion of the mask, and extending in the first direction,
wherein the mask further includes:
dummy opening regions disposed in the pattern region and arranged in the first direction in the first side portion of the mask, the dummy opening regions where openings are formed; and
opening regions disposed in the pattern region and arranged in the first direction in a second side portion that is opposite to the first side portion of the mask, the opening regions corresponding to the dummy opening regions, respectively, the opening regions where openings are formed, and

a number of the openings per a unit area in each of the dummy opening region and the opening region is smaller than a number of the openings per a unit area in the pattern region.