Oxidation sensor for an electrical circuit and a method of manufacture therefor
US6824739B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 3, 2000 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Nov 4, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N17/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides an oxidation sensor for an electrical circuit or MEMS device that includes a conductor located on an insulating substrate and a sensor trace located on the insulating substrate adjacent the conductor. The sensor trace is located on the insulating substrate adjacent the conductor and is configured to oxidize at a rate greater than an electrical component associated with the sensor trace on the electrical circuit or MEMS device when the sensor trace and the electrical component are exposed to a same oxidizing environment. By oxidizing and thus becoming an open circuit more rapidly than any structure on a electrical circuit or MEMS device at a given relative humidity (i.e. in the same package), the oxidation sensor is designed to provide early warning of oxidation. Thus, the present invention serves as a sensor that will give advance warning of a leaky package and associated oxidation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.