Patent ID: 11961910
Assignee: APPLIED MATERIALS, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 11:
12. A ferroelectric transistor comprising:
a plurality of metal layers comprising:
a first metal layer comprising a first metal having a first work function; and
a second metal layer comprising a second metal having a second work function that is different from the first work function, wherein the first metal layer is approximately parallel to the second metal layer;

a vertical contact that contacts the first metal layer;
a vertical channel that is approximately perpendicular to the first metal layer and approximately perpendicular to the second metal layer;
a vertical buffer layer that surround the vertical channel; and
a ferroelectric material that surrounds the vertical buffer layer and contacts the plurality of metal layers to form the ferroelectric transistor with a plurality of gate regions in the ferroelectric material comprising:
a first gate region between the vertical channel and the first metal layer that switches in response to a voltage between the vertical channel and the vertical contact; and
a second gate region between the vertical channel and the second metal layer that switches in response to the voltage between the vertical channel and the vertical contact.