Anti-stiction technique for thin film and wafer-bonded encapsulated microelectromechanical systems
US7074637B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2005 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Jun 30, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y10/00
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
There are many inventions described and illustrated herein. In one aspect, there is described a thin film or wafer encapsulated MEMS, and technique of fabricating or manufacturing a thin film or wafer encapsulated MEMS employing anti-stiction techniques. In one embodiment, after encapsulation of the MEMS, an anti-stiction channel is formed in the encapsulation layer or substrate, thereby providing “access” to the chamber containing some or all of the active members or electrodes of the mechanical structures. Thereafter, an anti-stiction fluid (for example, gas or gas-vapor) is introduced into the chamber via the anti-stiction channel. The anti-stiction fluid may deposit on one, some or all of the active members of the mechanical structures thereby providing an anti-stiction layer (for example, a monolayer coating or self-assembled monolayer) and/or out-gassing molecules on such members or electrodes. After introduction and/or application of the anti-stiction fluid, the anti-stiction channel may be sealed, capped, plugged and/or closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.