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:
Nov. 25, 2025
Filed:
Jun. 11, 2020
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Hiroyuki Iwahashi, Tokyo, JP;
Masahiro Takahashi, Tokyo, JP;
Yoshihiro Kishimoto, Tokyo, JP;
Takahumi Shibata, Tokyo, JP;
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Abstract
[Object] To improve the adhesion of a vapor-deposited film to a substrate. [Solution] A barrier film includes a substrate containing polyester and a vapor-deposited film containing aluminum oxide. At least the elemental bond of Al2O3 and the elemental bond of CN are detected by etching the barrier film using time-of-flight secondary ion mass spectrometry from a side adjacent to the vapor-deposited film. The peak intensity of the peak of the elemental bond of CN detected at the interface between the substrate and the vapor-deposited film is 0.15 or more times the maximum intensity value of the elemental bond of Al2O3.