公开(公告)号：US20240290732A1

公开(公告)日：2024-08-29

申请号：US18322996

申请日：2023-05-24

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： MINAH SEO ,  Geon LEE ,  Yeeun ROH

IPC: H01L23/00 ,  G06K19/073

CPC classification number: H01L23/573 ,  G06K19/07327

Abstract: Provided is a security code including a substrate, metamaterials on the substrate, a signal modulation pattern on the metamaterials, and a capping layer covering the signal modulation pattern and the metamaterials, wherein the metamaterials include a pair of metal patterns facing each other, the signal modulation pattern covers a portion of the metal patterns, and expose remaining of the metal patterns, and the signal modulation pattern has a different material from each of the metal patterns.