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:
Mar. 17, 2020
Filed:
Apr. 11, 2017
Apple Inc., Cupertino, CA (US);
Zhenbin Ge, San Jose, CA (US);
Xianwei Zhao, Fremont, CA (US);
Wookyung Bae, Santa Clara, CA (US);
Sunggu Kang, San Jose, CA (US);
Ligang Wang, San Jose, CA (US);
Avery P. Yuen, San Jose, CA (US);
Stephen C. Cool, San Jose, CA (US);
John Z. Zhong, Saratoga, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
An electronic device may have transparent members such as display cover layers and camera windows. A transparent member such as a sapphire member may be provided with an antireflection coating. The antireflection coating may have a stack of dielectric thin-film interference filter layers that form a thin-film interference filter that suppresses visible light reflections. The stack of dielectric thin-film interference filter layers may have thicknesses and materials that provide the thin-film interference filter and coating with low light reflection properties while enhancing scratch resistance. An adhesion layer may be used to help adhere the stack of thin-film interference filter layer to the transparent member. An antismudge coating such as a fluoropolymer coating may be used to reduce smudging. Graded layers and layers with elevated hardness values may be used in the coating.