Signal transmission insulative device and power semiconductor module
US10199340B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2015 |
| Grant date | Feb 5, 2019 |
| Priority date | — |
| Expiry date | Aug 19, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L25/18
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A signal transmission insulating device includes: a first coil; a second coil opposing the first coil to form a transformer together with the first coil; a first insulating film provided between the opposing first coil and second coil and made of a first dielectric material; a second insulating film surrounding the first coil and made of a second dielectric material having a lower resistivity or a higher permittivity than the first dielectric material; and a third insulating film surrounding the second coil and made of a third dielectric material having a lower resistivity or a higher permittivity than the first dielectric material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.