Patent ID: 9685524
Date: 2017-06-20
CPC Classifications: H01L

Claim:
1. A semiconductor device comprising: a substrate having a substrate top surface, a void within said substrate, wherein said substrate surrounds said void on the sides and bottom of said void; a region of epitaxial material formed on said bottom of said void and having a top surface substantially planar with said substrate top surface; and a trench having said substrate on one side and said epitaxial material on the other side, wherein said trench is characterized as having a width dimension of less than one hundredth of the critical dimension of the semiconductor process used to manufacture said semiconductor device, wherein epitaxial material is disposed only on one side of said trench, wherein said critical dimension is 1.0 micron; wherein said epitaxial material is of opposite carrier type of the substrate; and further comprising a vertical channel adjacent to said trench.