Patent ID: 9334556
Filing Date: 2016-05-10
CPC Classification: B05B,B23K,C23C,H01L,Y10T

Claim Text:
1. A method for producing a deposition mask, in which the deposition mask is produced by forming through a resin film that transmits visible light an opening pattern having the same shape and dimension as those of a thin film pattern so as to correspond to a preliminarily determined forming region of the thin film pattern on a substrate, the method comprising: a first step of bringing the film into close contact with a substrate on which the thin film pattern is to be formed, or with a reference substrate provided with a plurality of reference patterns having the same pitch as that of the thin film pattern and having the same shape and dimension of those of the thin film pattern; and a second step of processing a portion of the film corresponding to the forming region of the thin film pattern on the substrate on which the thin film pattern is to be formed or the reference patterns on the reference substrate, to form an opening pattern having the same shape and dimension as those of the thin film pattern.