Patent ID: 7638390

Claim:
A method of forming a static random access memory (SRAM) cell, comprising the steps of: providing a substrate; forming a device isolation structure in the substrate to define a first active region and a second active region; forming an opening in the device isolation structure between the first active region and the second active region, wherein the opening exposes a portion of the substrate on the sidewall of the device isolation structure, wherein the step of forming the opening in the device isolation structure between the first active region and the second active region comprises aligning the opening such that a portion of the opening lies in the first active region and a portion of the opening lies in the second active region; forming a dielectric layer over the substrate and a capacitor dielectric layer over the interior surface of the opening; forming a first gate and a second gate over the substrate and an upper electrode in the opening such that the upper electrode completely fills the opening; and forming a source/drain region in the substrate on each side of the first gate, the second gate and the upper electrode.