Manufacturing method of deposition mask and manufacturing method of organic EL display

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United States of America Patent

PATENT NO 12058922
APP PUB NO 20210193928A1
SERIAL NO

17169863

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Abstract

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A manufacturing method of a deposition mask includes a resin-layer forming step of forming a resin layer on one surface of a substrate by applying a resin solution to the surface of the substrate, a step of forming a non-contact area, which is not in contact with the surface of the substrate in the resin layer, by removing at least a part of the substrate, a step of bringing the resin layer into contact with a liquid or heating the resin layer after the non-contact area has been formed in the resin layer, and a resin-layer processing step of forming an opening in the resin layer by processing the resin layer after the step of bringing the resin layer into contact with the liquid or heating the resin layer.

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Patent Owner(s)

  • DAI NIPPON PRINTING CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Obata, Katsunari Tokyo, JP 64 503
Sone, Yasuko Tokyo, JP 11 27

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