Multi-layer ceramic package
US4320438A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 1980 |
| Grant date | Mar 16, 1982 |
| Priority date | — |
| Expiry date | May 15, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/16195
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
In a multi-layer ceramic package, a plurality of ceramic lamina each has a conductive pattern, and there is an internal cavity of the package within which is bonded a chip or a plurality of chips intereconnected to form a chip array. The chip or chip array is connected through short wire bonds at varying lamina levels to metalized conductive patterns thereon, each lamina level having a particular conductive pattern. The conductive patterns on the respective lamina layers are interconnected either by tunneled through openings filled with metalized material, or by edge formed metalizations so that the conductive patterns ultimately connect to a number of pads at the undersurface of the ceramic package mounted onto a metalized board. There is achieved a high component density; but because connecting wire leads are "staggered" or connected at alternating points with wholly different package levels, it is possible to maintain a 10 mil spacing and 10 mil size of the wire bond lands. As a result, there is even greater component density but without interference of wire bonds one with the other, this factor of interference being the previous limiting factor in achieving high component densi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.