Patent ID: 11935740
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A structure, comprising:
a semiconductor substrate; and
a field oxide layer on the semiconductor substrate, the field oxide layer comprising a first region next to a first transistor with a first gate dielectric layer and a second region next to a second transistor with a second gate dielectric layer, wherein:
the first gate dielectric layer includes a silicon dioxide layer on the semiconductor substrate and an oxidized inhibitor layer on the silicon dioxide layer, a bottom surface of the silicon dioxide layer being away from a bottom surface of the first region of the field oxide layer by a first distance; and
a bottom surface of the second gate dielectric layer is away from a bottom surface of the second region of the field oxide layer by a second distance less than the first distance.