| 摘要 |
A MEMS microphone is formed on a single substrate that also includes microelectronic circuitry. High-temperature tolerance metals are used to form contacts in a metallization step before performing deep reactive ion etching and back patterning steps to form a MEMS microphone. High-temperature tolerant metals such as titanium, tungsten, chromium, etc. can be used for the contacts. Another approach uses laser annealing in place of deep reactive ion etching so that high-temperature tolerant metals do not need to be used in earlier metallization steps. Different orderings for device, circuit, and metallization series of steps are presented.
|
