Self cooling electrically programmable fuse
US5585663A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1995 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Aug 4, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S438/922
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
An electrically programmable fuse buried under quartz and layers of polyimide with a specific structure to enhance its "thermal" capabilities. The fuse is designed to "blow" and cool off quickly so as not to cause damage to areas above and surrounding the fuse. A passivation layer is added above the fuse to act as a heat sink and absorb and redistribute the heat generated from one localized area to a broader and cooler area. The materials used for the fuse and the heat sink are selected to be compatible with both oxide and polyimide personalization schemes. Modeling of the fuse enables optimizing the characteristics of the fuse, particularly to transmit to the surface of the passivation layer the thermal wave created during programming of the fuse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.