Patent ID: 9555433
Date: 2017-01-31
CPC Classifications: B05B,B23K,C23C,H01L,Y10T

Claim:
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 the 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 into close contact with one surface of the film a metal member having an opening having the shape and dimension greater than those of the thin film pattern so as to correspond to a preliminarily determined forming region of the thin film pattern on a substrate, to form a masking member; and a second step of performing an etching process to the film in the opening to form an opening pattern having the same shape and dimension as those of the thin film pattern.