Airgap micro-spring interconnect with bonded underfill seal
US8039938B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2009 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Jun 13, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/857
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A package includes a pad chip having contact pads, a spring chip having micro-springs in contact with the contact pads to form interconnects, the area in which the micro-springs contact the contact pads forming an interconnect area, an assembly material between the pad chip and the spring chip arranged to form a gap between the pad chip and the spring chip, and an underfill material in a portion of the gap to form a mold from the pad chip and the spring chip. A package includes a pad chip having contact pads, a spring chip having micro-springs in contact with the contact pads to form interconnects, the area in which the micro-springs contact the contact pads forming an interconnect area, an assembly material between the pad chip and the spring chip arranged to form a gap between the pad chip and the spring chip, an underfill material in the gap to form a mold from the pad chip and the spring chip, and at least one wall between the underfill material and the interconnect area. A method of assembling a package includes aligning a pad chip with a spring chip to form at least one interconnect in an interconnect area, adhering the pad chip to the spring chip so that there is a gap betwe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.