Flip chip with backside electrical contact and assembly and method therefor
US6262489A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Nov 8, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/16152
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A method and assembly for mounting an IC semiconductor device to a substrate using flip chip technology. The assembly generally entails a flip chip having a first surface, an oppositely-disposed second surface, an integrated circuit that includes a vertical device on the first surface, and an electrical contact for the vertical device on the second surface. The flip chip is bonded with first solder connections to a first conductor pattern on a substrate, so that the first solder connections electrically and mechanically connect the flip chip to the substrate. The assembly further includes an electrical contact member that is positioned so that the flip chip is between the contact member and the substrate. The contact member is electrically and mechanically connected to a second conductor pattern on the substrate with second solder connections. A third solder connection electrically and mechanically connects the contact member to the electrical contact on the second surface of the flip chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.