Patent ID: 8088435

Claim:
A mask comprising a flat plate-shaped mask body which is formed with a plurality of through-holes, and a reinforcing section which is arranged on one surface of the mask body so as to straddle over the through-holes and which reinforces the mask body, wherein: a length between a surface of the mask body on a side opposite to the one surface of the mask body and a surface of the reinforcing section facing the through-holes is longer than a thickness of the mask body, wherein the plurality of the through holes formed in the mask body are a plurality of aligned linear through-holes; the reinforcing section includes a first reinforcing member which is arranged so as to straddle over the plurality of through-holes, and a second reinforcing member which is arranged to intersect the first reinforcing member; the second reinforcing member is extended in a direction that is substantially parallel to the linear through-holes and is arranged in an area substantially overlapped with and aligned in a same direction as the linear through-holes in a plan view; and a portion, at which the first reinforcing member and the second reinforcing member intersect with each other, is formed to be thicker than other portions of the first reinforcing member and the second reinforcing member.