Patent ID: 11947223
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An exposure mask comprising:
a non-overlapping portion comprising a first pattern;
a left boundary portion at one side of the non-overlapping portion and comprising a second pattern; and
a right boundary portion at the other side of the non-overlapping portion spaced apart from the one side in a first direction and comprising a third pattern,
wherein the second pattern comprises a plurality of left units, and each of the plurality of left units independently comprises a first white pattern and a first black pattern;
the third pattern comprises a plurality of right units, and each of the plurality of right units independently comprises a second white pattern and a second black pattern;
the second pattern comprises a plurality of the first white patterns and the first black patterns in an irregular arrangement;
the third pattern comprises a plurality of the second white patterns and the second black patterns in an irregular arrangement;
a planar area of an opening area in the first white pattern is larger than a planar area of an opening area in the first black pattern, and a planar area of an opening area in the second white pattern is larger than a planar area of an opening area in the second black pattern; and
a planar sum of the second pattern and the third pattern is the same as a portion of the first pattern.