Patent ID: 11894039
Assignee: NIF/T, LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 2:
3. The DRAM cell of claim 2 wherein
the trench capacitor comprises one or more etched holes extending into the semiconductor substrate through the epitaxially grown source;
a region adjacent to sidewalls of the etched holes having a doping of the second type, and thereby forming a connection between the region adjacent to the sidewalls of the etched holes and the epitaxially grown source;
the epitaxially grown source forming a first terminal of the trench capacitor, the trench capacitor having a capacitor dielectric on the sidewalls of the etched holes; and
a conductive material filling the etched holes to form a second terminal of the trench capacitor;
wherein the first terminal and the second terminal of the trench capacitor are separated by the capacitor dielectric.