FILM FORMING MASK

摘要

The present invention is a film forming mask (1) that has the following configuration: a resin film (3) is tightly adhered to one surface of a sheet-shaped magnetic metal member (2) that has a plurality of slit-shaped through holes (5) arranged in parallel. The film forming mask (1) has a plurality of opening patterns (6) that penetrate the portions of the film (3) that are within the through holes (5). The film (3) has anisotropic properties such that perpendicular axes have different linear coefficients of expansion, and the smaller linear coefficient of expansion axis of the film (3) is aligned with the direction that intersects the longitudinal axis of the through holes (5) of the magnetic metal member (2).