Package structure and manufacturing method thereof
US9868630B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2016 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Aug 16, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB81C2203/036
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A package structure includes a device chip, a MEMS die, a cap structure, and an eutectic bonding layer. The MEMS die is over the device chip and includes a substrate having a plurality of cavities and a conductive layer covering a bottom surface and sidewalls of each of the cavities. The cap structure is coupled to the MEMS die, and the cap structure includes a base substrate having at least one seal ring located in the cavities and a bonding layer covering a first surface and at least part of sidewalls of the seal ring. The first surface of the seal ring faces the MEMS die. The eutectic bonding layer is located between the conductive layer and the bonding layer in the cavities. In addition, a method of manufacturing the package structure is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.