US 11,719,865 B2
Visible-light-reflecting coatings for electronic devices
Brian S. Tryon, Redwood City, CA (US); Lijie Bao, Saratoga, CA (US); Martin Melcher, Mountain View, CA (US); and Sonja R. Postak, Palo Alto, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Feb. 16, 2021, as Appl. No. 17/176,992.
Claims priority of provisional application 62/988,346, filed on Mar. 11, 2020.
Prior Publication US 2021/0286112 A1, Sep. 16, 2021
Int. Cl. G02B 5/08 (2006.01); G02B 5/28 (2006.01)
CPC G02B 5/0833 (2013.01) [G02B 5/286 (2013.01)] 24 Claims
OG exemplary drawing
 
1. Apparatus comprising:
a conductive substrate; and
a coating on the conductive substrate and having a color, the coating comprising:
adhesion and transition layers,
a CrSiN layer on the adhesion and transition layers, the CrSiN layer being opaque to light of the color, and
an uppermost layer on the CrSiN layer, the uppermost layer comprising a CrSiC film.