Patent ID: 8525279
Filing Date: 2013-09-03
Classification: G01L

Abstract:
1. A three terminal pressure sensor (“3-TPS”), comprising: a first semiconducting layer having a substantially circular cavity; an insulating layer configured on the semiconducting layer, at least a portion of the insulating layer overlapping the cavity; a second semiconducting layer configured on the insulating layer; and a 3-TPS element, at least a portion of which is configured on the second semiconducting layer, the 3-TPS element comprising: at least one piezoresistive layer having a length of at least about 40 μm and a width of at least about 20 μm; an input terminal; and first and second output terminals, wherein the 3-TPS element includes at most three terminals and overlaps at least a portion of the perimeter of the cavity, wherein the 3-TPS element is oriented at an angle of about 45 degrees from a tangent line to the perimeter of the cavity, and wherein at least a portion of the first or second output terminals overlaps the cavity and at least a portion of the input terminal does not overlap the cavity.