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:
Feb. 24, 2015
Filed:
Feb. 28, 2014
Applicant:
Nippon Steel Materials Co, Ltd., Tokyo, JP;
Inventors:
Noriko Yamada, Tokyo, JP;
Toyoshi Ogura, Tokyo, JP;
Yuji Kubo, Tokyo, JP;
Shuji Nagasaki, Tokyo, JP;
Assignee:
Nippon Steel & Sumikin Materials Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C 38/00 (2006.01); B21B 1/40 (2006.01); C21D 6/00 (2006.01); C21D 8/04 (2006.01); H01L 51/00 (2006.01); C21D 9/46 (2006.01);
U.S. Cl.
CPC ...
B21B 1/40 (2013.01); C21D 6/002 (2013.01); C21D 8/0426 (2013.01); C21D 8/0463 (2013.01); C22C 38/00 (2013.01); H01L 51/0097 (2013.01); C21D 9/46 (2013.01); C21D 2211/005 (2013.01); Y02E 10/549 (2013.01);
Abstract
The present invention provides stainless steel foil for flexible display use which enables fabrication of a TFT substrate for display use which is superior in shape recovery after being rolled up or bent and which is high in surface flatness and is characterized by having a thickness of 20 μm to 200 μm, a surface roughness Ra of 50 nm or less, and a shape recovery of a distortion angle of 10° or less after being wound around a 30 mm diameter cylinder.