Deposition mask, deposition mask apparatus, manufacturing method of deposition mask, and manufacturing method of deposition mask apparatus
A deposition mask includes: a first mask having an opening formed therein; and a second mask superposed on the first mask and having a plurality of through-holes formed therein, the through-hole having a planar dimension smaller than a planar dimension of the opening; wherein: the deposition mask has a plurality of joints that join the second mask and the first mask to each other; the plurality of joints are arranged along an outer edge of the second mask; and a notch is formed at a position in the outer edge of the second mask, the position corresponding to a space between the adjacent two joints.
1. A deposition mask comprising:
a first mask having openings formed therein; and
a second mask superposed on the first mask and having a plurality of through-holes formed therein, each through-hole having a planar dimension smaller than a planar dimension of each opening;
wherein:
the second mask has a rectangular outer edge;
the deposition mask has a plurality of joints that join the second mask and the first mask to each other;
the plurality of joints are arranged along all sides of the outer edge of the second mask; and
a notch is formed at a position corresponding to a space between two adjacent joints arranged along the same side of the outer edge of the second mask.
2. A deposition mask according to claim 1 , wherein
the notch extends inwardly from the outer edge of the second mask beyond the space directly between two adjacent joints.
3. A deposition mask according to claim 1 , further comprising at least three notches formed along at least one side of the outer edge of the second mask.
4. A deposition mask according to claim 1 , further comprising at least three notches formed along all sides of the outer edge of the second mask.
5. A deposition mask apparatus comprising:
the deposition mask according to claim 1 ; and
a frame attached to the deposition mask.