Isolator

Patent metadata

Field	Value
Publication number	US-2021305179-A1
Application number	US-202017016686-A
Country	US
Kind code	A1
Filing date	Sep 10, 2020
Priority date	Mar 24, 2020
Publication date	Sep 30, 2021
Grant date	—

Abstract

According to one embodiment, an isolator includes a first electrode, a second electrode, a conductive body, and a first insulating layer. The second electrode is provided on the first electrode and separated from the first electrode. The conductive body is provided around the first and second electrodes along a first plane perpendicular to a first direction. The first direction is from the first electrode toward the second electrode. The first insulating layer is provided on the second electrode. The first insulating layer includes silicon, carbon, and nitrogen.

First claim

What is claimed is:

1 . An isolator, comprising:
a first electrode; 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; and a first insulating layer provided on the second electrode, the first insulating layer including silicon, carbon, and nitrogen.

2 . The isolator according to claim 1 , wherein
the conductive body is electrically connected to the first electrode.

3 . The isolator according to claim 1 , wherein
a potential of the conductive body is set to be equal to a potential of the first electrode.

4 . The isolator according to claim 1 , further comprising:
a second insulating layer provided on the conductive body, the second insulating layer including silicon, carbon, and nitrogen.

5 . The isolator according to claim 1 , further comprising:
a first insulating portion provided between the first electrode and the second electrode; and a third insulating layer provided between the first electrode and the first insulating portion, the third insulating layer including silicon and nitrogen.

6 . The isolator according to claim 5 , wherein
the third insulating layer further includes carbon.

7 . The isolator according to claim 1 , further comprising:
a fourth insulating layer including silicon, carbon, and nitrogen, the conductive body including
a first conductive portion provided around the first electrode along the first plane,
a second conductive portion provided on a portion of the first conductive portion, and
a third conductive portion provided on the second conductive portion and provided around the second electrode along the first plane,
the fourth insulating layer being provided around a bottom portion of the second conductive portion and contacting the second conductive portion.

8 . The isolator according to claim 1 , wherein
a distance between the second electrode and the conductive body in a second direction perpendicular to the first direction is greater than a distance between the first electrode and the second electrode in the first direction.

9 . The isolator according to claim 1 , further comprising:
a first circuit electrically connected to the first electrode; and a second circuit electrically connected to the second electrode.

10 . The isolator according to claim 1 , wherein
the first electrode and the second electrode are provided in spiral configurations.

11 . The isolator according to claim 9 , wherein
the first circuit is a receiving circuit, and the second circuit is a transmitting circuit.

Assignees

• Toshiba Kk
• Toshiba Electronic Devices & Storage Corp

Inventors

• Ootsuka Kenichi
• Ootsuka Mari

Classifications

• H10W72/5524

  comprising aluminium [Al] · CPC title

• H10W72/5522

  comprising gold [Au] · CPC title

• H10W90/293

  characterised by non-galvanic coupling between the chips, e.g. capacitive coupling · CPC title

• H10W74/00

  Encapsulations, e.g. protective coatings · CPC title

• H10W72/884

  Die-attach connectors and bond wires · CPC title