US Patent No. 10,694,620

METHOD AND APPARATUS FOR CIRCUIT BOARD NOISE SHIELDING AND GROUNDING


Patent No. 10,694,620
Issue Date June 23, 2020
Title Method And Apparatus For Circuit Board Noise Shielding And Grounding
Inventorship Andrew James Hillenius, Woodinville, WA (US)
Jason Allen Harrigan, Sultan, WA (US)
Assignee Microsoft Technology Licensing, LLC, Redmond, WA (US)

Claim of US Patent No. 10,694,620

1. A printed circuit board (PCB) device, comprising:a surface or internal layer including one or more electrically conductive traces configured to carry a signal or power plane;
at least one thin film comprising an electrically insulating material disposed on the surface or the internal layer; and
one or more electrically conductive layers on the at least one thin film;
wherein the one or more electrically conductive layers and the one or more electrically conductive traces are separated by the at least one thin film in a configuration that defines a capacitive frequency response between the one or more electrically conductive layers and the one or more electrically conductive traces;
wherein the capacitive frequency response is configured to shield, ground, or filter noise or signals carried on the one or more electrically conductive traces.