The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 2022
Filed:
Mar. 08, 2018
Lg Innotek Co., Ltd., Seoul, KR;
Jee Heum Paik, Seoul, KR;
Yoon Tai Kim, Seoul, KR;
LG INNOTEK CO., LTD., Seoul, KR;
Abstract
A metal plate for use in manufacture of a deposition mask according to an embodiment is a multilayer metal plate having a thickness of 30 μm or less and containing an alloy of nickel (Ni) and iron (Fe), and comprises: a first outer portion occupying an area corresponding to 20% or less of the total thickness of the metal plate from one surface thereof; a second outer portion occupying an area corresponding to 20% or less of the total thickness from the other surface opposite to the one surface; and a central portion except the first outer portion and the second outer portion, wherein the first outer portion and the second outer portion each have a larger nickel content than that of the central portion. The multilayer metal plate for use in manufacture of a deposition mask according to an embodiment is a multilayer metal plate containing an alloy of nickel (Ni) and iron (Fe), and is manufactured by a method comprising the steps of: forming a nickel-plated layer; forming an iron-plated layer on the nickel-plated layer; forming a multilayer-plated plate in which the nickel-plated layer and the iron-plated layer are alternately and repeatedly arranged; and heat-treating the multilayer-plated plate at a temperature of 300° C. or higher.