Metal Plate For Manufacturing Deposition Mask, Method For Manufacturing Metal Plate, Deposition Mask And Method For Manufacturing Deposition Mask
Patent No. EP3805415 (titled "Metal Plate For Manufacturing Deposition Mask, Method For Manufacturing Metal Plate, Deposition Mask And Method For Manufacturing Deposition Mask") was filed by DAI Nippon Printing on Oct 8, 2020. The application was issued on Nov 30, 2022.
Patent Summary
A metal plate for manufacturing a deposition mask, comprising a first surface and a second surface positioned on the opposite side of the first surface, containing iron and nickel, and including particles containing as a main component an element other than iron and nickel, wherein the particles have an equivalent circle diameter of 3 µm or less, and the metal plate satisfies the following conditions: (1) the number of particles per unit area on the first surface is 10^4 particles/cm^2 or less, (2) the number of particles per unit area on the second surface is 10^4 particles/cm^2 or less, and (5) the number of particles per unit area on the first surface is 10 times or less than the number of particles per unit area on the second surface.
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EP3805415
- Application Number
- EP20200827A
- Filing Date
- Oct 8, 2020
- Status
- No Opposition Filed Within Time Limit
- Oct 6, 2023
- Publication Date
- Nov 30, 2022
- External Links
- Slate, Register , Google Patents