Signal processing semiconductor integrated circuit device
US7095999B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2002 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Jun 23, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A semiconductor integrated circuit comprising a first circuit block including an oscillation circuit considered to be a noise generator and a second circuit block including circuits considered to be easily affected by a noise generated by the oscillation circuit, being most likely led to a malfunction are created on a single semiconductor substrate with the first and second circuit blocks separated from each other. To put it more concretely, the first and second circuit blocks are respectively created in a first island area and a second island area on the surface of the semiconductor substrate. The first and second island areas are each enclosed by an insulating isolation band. A low-resistance semiconductor area is created in a base area excluding locations occupied by active elements in the first and second island areas and is connected to a stable voltage terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.