Ball grid array arrangement
US5717245A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 1995 |
| Grant date | Feb 10, 1998 |
| Priority date | — |
| Expiry date | Mar 24, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/368
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A ball grid array arrangement comprises a dielectric multilayer substrate, in a lower metallization layer of which is disposed an array of solder balls. A passive circuit element is integrated into at least one of the metallization layers. The arrangement may be either a discrete component consisting of a triplate transmission-line resonator or interdigitated filter integrated into an inner metallization layer and defined by that layer in conjunction with adjacent layers, or it may take the form of an IC carrier or multichip-module carrier having such transmission structures situated within a central die-attach area of the substrate and having also a peripheral area containing bonding structures for the mounting of at least one chip or chip module. There will normally be at least two groups of such bonding structures, and a passive circuit element in the form of an inductor may be formed in the upper metallization layer between adjacent groups of bonding structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.