Patent ID: 9246101
Filing Date: 2016-01-26
CPC Classification: C23C,H01L

Claim Text:
1. A deposition mask that is used to form a thin film in a prescribed pattern on a substrate by depositing deposition particles through a plurality of openings having a stripe pattern, comprising: a frame-shaped mask support body; a plurality of mask layers including at least a first mask layer and a second mask layer, and provided in a frame of the mask support body so as to overlap each other; and a support layer provided between the first mask layer and the second mask layer, wherein each of the first mask layer and the second mask layer is formed by arranging in a stripe pattern a plurality of mask wires in a same direction in a tensioned manner on the mask support body, the support layer is formed by arranging a plurality of support wires in a tensioned manner on the mask support body so as to cross the mask wires, a plurality of gaps in each of the first mask layer and the second mask layer overlap each other to form a plurality of through gaps that linearly extend through both the first mask layer and the second mask layer, the plurality of openings are formed by the plurality of through gaps, and the mask wires of the first mask layer overlap the mask wires of the second mask layers in a vertical direction, so that outlines of the mask wires of the first mask layer match outlines of the mask wires of the second mask layer as the mask wires of the first mask layer and the mask wires of the second mask layers are viewed in a direction perpendicular to the first mask layer and the second mask layer.