Patent ID: 7549344

Claim:
A pressure sensor package comprising: a pressure sensor comprising: a cavity disposed within a semiconductor substrate, wherein a region of the substrate above the cavity comprises a diaphragm section; a plurality of pressure-sensitive elements, wherein at least of portion of each pressure-sensitive element is disposed on the diaphragm section; and a plurality of conductive portions laterally spaced from the cavity and electrically connected to the pressure sensitive elements; a plurality of electrically conductive bumps arranged on the conductive portions and electrically connected to the conductive portions, wherein a total thickness D 1 of the semiconductor substrate, a thickness D 2 of the diaphragm section, a thickness D 3 of the cavity, and a thickness D 4 =D 1 −(D 2 +D 3 ) satisfy the relationships: (D 2 +D 3 ) in a range of approximately 5-20 μm, and D 1 not less than about 100 μm.