Patent ID: 8558250

Claim:
A semiconductor device, comprising: a substrate; a first MEMS device of one or more MEMS devices over the substrate; a pixel array over the substrate, the pixel array comprising one or more pixels; and a display comprising at least a portion of the one or more pixels of the pixel array; and one or more pressure sensors; wherein: a first pressure sensor of the one or more pressure sensors comprises the first MEMS device; the first pressure sensor is configured to detect when the display is contacted proximate to the first pressure sensor; the first MEMS device comprises: a capacitor having: an electrically conductive material located over the substrate; a sensor membrane movably suspended over the electrically conductive material; and a first dielectric located over the electrically conductive material and under the sensor membrane; and a round wall structure configured to support the sensor membrane over a gap between the electrically conductive material and the sensor membrane; and the sensor membrane is configured to move towards the electrically conductive material when the display is contacted proximate to the first pressure sensor.