Patent ID: 7897460

Claim:
A method of forming recessed access devices associated with a semiconductor construction, comprising: providing a semiconductor substrate comprising monocrystalline silicon; forming recessed access device trenches within the monocrystalline silicon of the substrate; filling the recessed access device trenches with a first electrically insulative material; patterning the first electrically insulative material into a mask defining a plurality of access device regions, the access device regions being islands surrounded by an isolation region; the access device regions comprising only portions of the recessed access device trenches; etching into the monocrystalline silicon of the substrate within said isolation region to form at least one cavity within the monocrystalline silicon and extending around the access device regions; filling the at least one cavity with a second electrically insulative material; removing at least the majority of the first electrically insulative material while leaving the second electrically insulative material within the at least one cavity; and after removing at least the majority of the first electrically insulative material, forming gate material within the portions of the recessed access device trenches comprised by the access device regions.