Patent ID: 7619275

Claim:
A process for forming an electronic device, the process comprising: forming a first trench within a substrate, wherein the first trench includes a wall and a bottom and extends from a primary surface of the substrate; forming discontinuous storage elements over the primary surface and within the first trench, wherein a first portion of the discontinuous storage elements lies within the first trench; forming a first gate electrode within the first trench after forming the discontinuous storage elements, wherein: the first gate electrode has an upper surface that lies below the primary surface of the substrate; and at least part of the first portion of the discontinuous storage elements lies between the first gate electrode and the wall of the first trench; forming a second gate electrode that overlies the first gate electrode and the primary surface of the substrate, wherein after forming the second gate electrode, at least a part of the first portion of the discontinuous storage elements lies along the wall of the first trench at an elevation between an upper surface of the first gate electrode and the primary surface of the substrate.