Integrated circuit card comprising means for the protection of the integrated circuit
US5574309A · kind A · utility
186Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1994 |
| Grant date | Nov 12, 1996 |
| Priority date | — |
| Expiry date | Aug 15, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/48091
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A system for protecting integrated circuits on smart cards is described. The circuit (103) is placed in a cavity (102) in a ceramic package (101). Standard contacts (104) are deposited on the side of the package opposite to the cavity opening and connected to the chip (103) via feed-through conductors (106) extending into the cavity (102) and connected therein to wires (105) which are welded to the chip (103). The cavity (102) is either sealed by a lead (108) or filled with a protective material (208). Smart cards with a lifetime of over ten years may thus be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.