Abstract:
A microelectromechanical systems (MEMS) package with high gettering efficiency is provided. A MEMS device is arranged over a logic chip, within a cavity that is hermetically sealed. A sensing electrode is arranged within the cavity, between the MEMS device and the logic chip. The sensing electrode is electrically coupled to the logic chip and is a conductive getter material configured to remove gas molecules from the cavity. A method for manufacturing the MEMS package is also provided.
Abstract:
A microelectromechanical systems (MEMS) package with high gettering efficiency is provided. A MEMS device is arranged over a logic chip, within a cavity that is hermetically sealed. A sensing electrode is arranged within the cavity, between the MEMS device and the logic chip. The sensing electrode is electrically coupled to the logic chip and is a conductive getter material configured to remove gas molecules from the cavity. A method for manufacturing the MEMS package is also provided.
Abstract:
A gas sensor includes a substrate, a heater, a dielectric layer, a sensing electrode, and a gas sensitive film. The substrate has a sensing region and a peripheral region surrounding the sensing region, and the substrate further has an opening disposed in the sensing region. The heater is disposed at least above the opening, and the heater has an electrical resistivity larger than about 6×10−8 ohm-m. The dielectric layer is disposed on the heater. The sensing electrode is disposed on the dielectric layer. The gas sensitive film is disposed on the sensing electrode.