Patent ID: 7509884

Claim:
A sensor sheet comprising: a plurality of first stripe electrodes disposed so as to be distant from each other; a plurality of second stripe electrodes disposed so as to be distant from each other and intersect with the plurality of first electrodes in a plan view, the plurality of second electrodes being displaceable toward the plurality of first electrodes by a force externally applied; a plurality of pressure-sensitive resistive elements disposed between the plurality of first electrodes and the plurality of second electrodes at detection regions where the first and second electrodes overlap each other in a plan view; and a core member made of a hard material and disposed on the opposite side of the plurality of second electrodes from the plurality of first electrodes so as to be over a plurality of detection regions in a plan view, the sheet detecting different directional components of an externally applied force on the basis of changes in the resistance values between portions of the first and second electrodes corresponding to the plurality of detection regions.