Patent ID: 9176089
Filing Date: 2015-11-03
Classification: G01D,G01K,G01L,G01N,H01L

Abstract:
1. A semiconductor-based multi-sensor module, comprising: a differential pressure sensor positioned on a silicon substrate, the differential pressure sensor having a pair of parallel plate capacitors, each capacitor including a pressure-sensing dielectric film and a metal mesh top plate; a temperature sensor adjacent to the differential pressure sensor on the same silicon substrate and configured for continuous exposure to the same ambient environment, the temperature sensor implemented as a thin film Wheatstone bridge that is highly sensitive to ambient temperature changes, the thin film Wheatstone bridge including a plurality of resistors having different thermal coefficients of resistance; and a differential humidity sensor adjacent to the pressure and temperature sensors on the same silicon substrate, the differential humidity sensor having a pair of parallel plate capacitors, each capacitor including a metal mesh top plate and a dielectric film that is sensitive to ambient relative humidity.