Patent ID: 9608111
Date: 2017-03-28
CPC Classifications: H01L

Claim:
1. A transistor construction, comprising: an upwardly-opening container-shaped first insulative structure within a silicon-containing base; an upwardly-opening container-shaped first conductive structure nested within a lower region of the container-shaped first insulative structure; an upwardly-opening container-shaped ferroelectric structure within the first insulative structure and over the first conductive structure; a second conductive structure within a lower region of the container-shaped ferroelectric structure; the second conductive structure having an uppermost surface beneath an uppermost surface of the first conductive structure; a second insulative structure over the second conductive structure and within the container-shaped ferroelectric structure; a pair of source/drain regions adjacent an upper region of the container-shaped first insulative structure and on opposing sides of the first insulative structure from one another; channel material along an outer region of the container-shaped first insulative structure and extending from one of the source/drain regions to the other; wherein the first conductive structure comprises one or both of titanium nitride and tantalum nitride; and wherein the ferroelectric structure comprises metal oxide.