Semiconductor device having heat protection circuits
US6605853B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2001 |
| Grant date | Aug 12, 2003 |
| Priority date | — |
| Expiry date | Jul 23, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/611
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A semiconductor device has plural output circuits. Each of the plural output circuits has a semiconductor switching element and a heat protection circuit including a diode. When the heat protection circuit in a predetermined output circuit detects that heat emitted from the semiconductor switching element in the predetermined output circuit, the heat protection circuit turns off the semiconductor switching element in the predetermined output circuit. The plural output circuits are thermally isolated from each other by a trench and an insulation film. The trench and the insulation film prevent the heat from being transmitted from the predetermined output circuit to an adjacent output circuit. Therefore, even if the heat, by which the semiconductor switching element in the predetermined output circuit is turned off, is generated at the predetermined output circuit, the semiconductor switching element in the adjacent output circuit is not turned off by the heat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.