公开(公告)号：US11910552B2

公开(公告)日：2024-02-20

申请号：US16904501

申请日：2020-06-17

Applicant: Apple Inc.

Inventor： Manish Mittal ,  Brian S. Tryon ,  James A. Yurko ,  Jing Zhou ,  Matthew S. Rogers ,  Naoto Matsuyuki

IPC: H05K5/04 ,  H05K5/00 ,  H05K5/02 ,  C08K3/08

CPC classification number: H05K5/04 ,  C08K3/08 ,  H05K5/0017 ,  H05K5/0086 ,  H05K5/0217 ,  C08K2003/0831

Abstract: An electronic device may have a housing. The device may include metal structures such as a metal member forming a portion of the housing, a portion of a strap, or other portions of the device. A gold-containing coating such as a layer of elemental gold or a gold alloy may cover the metal member to provide the metal member with a gold appearance or other desired appearance. To protect the metal member and the gold-containing coating, the metal member and gold-containing coating may be covered with a protective coating layer such as an organic protective layer. The organic protective layer may have a fluoropolymer layer with thiol coupling groups to promote adhesion to the gold-containing layer or may contain a polymer layer with silane and thiol coupling groups that serves as an adhesion promotion layer for an overlapping fluoropolymer layer with silane coupling groups.

公开(公告)号：US20210400830A1

公开(公告)日：2021-12-23

申请号：US16904501

申请日：2020-06-17

Applicant: Apple Inc.

Inventor： Manish Mittal ,  Brian S. Tryon ,  James A. Yurko ,  Jing Zhou ,  Matthew S. Rogers ,  Naoto Matsuyuki

IPC: H05K5/04 ,  H05K5/00 ,  H05K5/02

Abstract: An electronic device may have a housing. The device may include metal structures such as a metal member forming a portion of the housing, a portion of a strap, or other portions of the device. A gold-containing coating such as a layer of elemental gold or a gold alloy may cover the metal member to provide the metal member with a gold appearance or other desired appearance. To protect the metal member and the gold-containing coating, the metal member and gold-containing coating may be covered with a protective coating layer such as an organic protective layer. The organic protective layer may have a fluoropolymer layer with thiol coupling groups to promote adhesion to the gold-containing layer or may contain a polymer layer with silane and thiol coupling groups that serves as an adhesion promotion layer for an overlapping fluoropolymer layer with silane coupling groups.