公开(公告)号：US20230244018A1

公开(公告)日：2023-08-03

申请号：US18156905

申请日：2023-01-19

Applicant: Apple Inc.

Inventor： Brian S Tryon ,  Naoto Matsuyuki ,  Shuichi Shimada ,  Bin Fan ,  Hyuga Taniguchi

IPC: G02B5/28

CPC classification number: G02B5/285

Abstract: An electronic device may be provided with conductive structures such as conductive housing structures. A visible-light-reflecting coating may be formed on the conductive structures. The coating may have adhesion and transition layers and a multi-layer thin-film interference filter on the adhesion and transition layers. The multi-layer thin-film interference filter may have an uppermost SiCrN layer, a lowermost TiN layer, and a set of SiN layers interleaved with a set of SiH layers. The coating may exhibit an orange, yellow, or red color that has a relatively uniform visual response at different viewing angles even when the underlying conductive structures have a three-dimensional shape.