Patent ID: 11876058
Assignee: TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. An isolator, comprising:
a first electrode electrically connected to a reference potential;
a second electrode provided on the first electrode and separated from the first electrode;
a conductive body provided around the first and second electrodes along a first plane perpendicular to a first direction, the first direction being from the first electrode toward the second electrode, the conductive body being electrically connected to the reference potential;
a first insulating region provided on the second electrode, the first insulating region including silicon, carbon, and nitrogen, the first insulating region directly contacting an upper surface of the second electrode; and
a second insulating portion provided between the second electrode and the conductive body,
the first insulating region directly contacting an upper surface of the second insulating portion,
wherein a maximum concentration of a metal at an interface between the second insulating portion and the first insulating region is no more than 100 times a minimum concentration of the metal in the second insulating portion and the first insulating region.