Patent ID: 9293687
Filing Date: 2016-03-22
CPC Classification: H01L

Claim Text:
1. A method of forming a piezoelectronic transistor (PET) device, the method comprising: forming a first metal layer; forming a layer of a piezoelectric (PE) element on the first metal layer; forming a second metal layer on the PE element; forming a well above the second metal layer, sides of the well being lined with a passivation film; forming a piezoresistive (PR) material in the well and above the well, a diameter of the PR material above the well being greater than a diameter of the well; forming a passivation layer and a top metal layer above the PR material at the diameter of the PR material above the well, wherein a cross sectional shape of the well, the PR material above the well, the passivation layer, and the top metal layer is a T-shaped structure; and forming a metal clamp layer as a top layer of the PET device.