Patent ID: 7964807

Claim:
A force actuated switch, comprising: a first wafer of semiconductor material having an active area capable of deflecting upon application of a force thereto; a first and a second metal contact areas positioned on said active area and separated one from the other; an insulating layer secured to said semiconductor wafer and having a recess surrounding said active area and enclosing said metal contact areas, said insulating layer having a third metal contact area overlying and extending between said first and second metal contact areas, whereby when a force of a predetermined value is applied to said active area said first metal contact area is connected to said second metal contact area via said third metal contact area due to said predetermined force causing said deflection area to curve toward the insulating layer; a fourth and a fifth metal contact areas located on said deflecting areas of said semiconductor wafer and separate from said first and second metal contact areas and a sixth metal contact area positioned on said insulating layer and disposed between said fourth and fifth metal contact areas and separated from said third metal contact area to cause said fourth and fifth metal contact areas to make electrical contact via said sixth metal contact area when said predetermined force is applied, wherein said first and second metal contact areas are fabricated from a different conductive metal than said fourth and fifth metal contact areas.