Patent ID: 7704326

Claim:
A deposition mask comprising: a frame body having an opening; and a mask body that includes a metal thin film, wherein the mask body includes at least one pattern region including a plurality of passage holes through which a deposition material can pass, a stress relaxation region including a plurality of stress relaxation holes provided about an outer perimeter of the at least one pattern region, and a holding region provided at an outer side of the stress relaxation region, wherein the plurality of stress relaxation holes provided in the stress relaxation region are arranged in a pattern about the outer perimeter of the at least one pattern region to correspond to a degree of deformation of the mask body in the stress relaxation region, and the pattern is determined based on a stress analysis result of the mask body determined by a finite element analysis method, wherein a density of the stress relaxation holes in the stress relaxation region is larger in areas corresponding to greater analyzed stress and smaller in areas corresponding to lesser analyzed stress, and wherein the mask body is mounted on the frame body at the holding region so that the pattern region is located inside the opening of the mask body.