Title:
METAL MASK MATERIAL, METHOD FOR PRODUCING SAME, AND METAL MASK
Document Type and Number:
WIPO Patent Application WO/2020/067537
Kind Code:
A9
Abstract:
Provided are: an OLED-use metal mask material in which the amount of warping caused by etching is reduced; a method for producing same; and a metal mask. This metal mask material and this metal mask are characterized by containing 35.0-37.0% of Ni and 0.00-0.50% of Co in terms of mass%, with the remainder comprising Fe and impurities, and are characterized in that when a square metal mask material sample measuring 100 mm on each side and having a sheet thickness of 5.00-50.00 μm is etched from one side until the sheet thickness becomes 2/5 the original sheet thickness, and when the etched sample is then mounted on a surface plate, the amount of warping, which is the maximum value among the uplift amounts of the four corners of the sample, is 5.0 mm or less.
Inventors:
YONEMURA MITSUHARU (JP)
FUJIMOTO NAOKI (JP)
KIMURA KEITA (JP)
UNNO HIROTO (JP)
FUJIMOTO NAOKI (JP)
KIMURA KEITA (JP)
UNNO HIROTO (JP)
Application Number:
PCT/JP2019/038416
Publication Date:
August 20, 2020
Filing Date:
September 27, 2019
Export Citation:
Assignee:
NIPPON STEEL CHEMICAL & MAT CO LTD (JP)
International Classes:
C22C38/00; C21D9/46; C22C38/10
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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