Patent ID: 9576891
Date: 2017-02-21
CPC Classifications: H01L

Claim:
1. An isolation device for isolating a first circuit from a second circuit while allowing a first signal to be transmitted from the first circuit to the second circuit, comprising: a substrate having a first surface; a plurality of metal layers, each of the plurality of the metal layers being substantially parallel to the first surface, wherein the plurality of metal layers comprise: an isolation material at least partially surrounding the plurality of metal layers but exposing a surface of the topmost metal layer; a first plate being coupled directly to the first circuit so as to receive the first signal, wherein first plate is a portion of the topmost metal layer; and a second plate disposed adjacent to the first plate but being distanced away and electrically isolated from the first plate such that the second plate is configured to indirectly receive the first signal via a capacitive coupling signal between the second plate and the first plate, the second plate being electrically connected to the second circuit.