Method for producing base for metal masks, method for producing metal mask for vapor deposition, base for metal masks, and metal mask for vapor deposition

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United States of America Patent

PATENT NO 11746423
APP PUB NO 20210355586A1
SERIAL NO

17390579

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Abstract

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A rolled metal sheet includes an obverse surface and a reverse surface that is a surface located opposite to the obverse surface. At least either one of the obverse surface and the reverse surface is a processing object. A method for manufacturing a metal mask substrate includes reducing a thickness of the rolled metal sheet to 10 μm or less by etching the processing object by 3 μm or more by use of an acidic etching liquid, and roughening the processing object so that the processing object becomes a resist formation surface that has a surface roughness Rz of 0.2 μm or more, thereby obtaining a metal mask sheet.

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Patent Owner(s)

Patent OwnerAddress
TOPPAN PRINTING CO LTD5-1 TAITO 1-CHOME TAITO-KU TOKYO 110-0016

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujito, Daisei Tokyo, JP 7 60
Kurata, Masashi Tokyo, JP 6 37
Mikami, Naoko Tokyo, JP 24 317
Nishi, Takehiro Tokyo, JP 10 70
Nishitsuji, Kiyoaki Tokyo, JP 15 89
Tamura, Sumika Tokyo, JP 5 46
Terada, Reiji Tokyo, JP 8 44

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