Patent ID: 11887958
Assignee: STMICROELECTRONICS S.R.L.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A device, comprising:
a substrate having a first surface;
a non-conductive layer on the first surface of the substrate;
a ring-shaped conductive structure on the substrate, the ring-shaped conductive structure extending away from the substrate, the ring-shaped conductive structure including:
a second surface facing away from the substrate;
an opening extending towards the substrate, the opening exposes the non-conductive layer on the first surface of the substrate;
an interior sidewall that surrounds the opening; and
an exterior sidewall that surrounds the opening, the interior sidewall, and the second surface; and

a cylindrical conductive structure on the substrate, the cylindrical conductive structure extending away from the substrate.