Patent ID: 11889687
Assignee: MICRON TECHNOLOGY, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. An integrated circuit structure, comprising:
a semiconductor material having a particular conductivity type;
a first active area in the semiconductor material;
a second active area in the semiconductor material; and
an isolation structure comprising a dielectric material deposited in a trench form in the semiconductor material between the first active area and the second active area, the isolation structure further comprising:
a first edge portion extending below a surface of the semiconductor material to a first depth;
a second edge portion extending below the surface of the semiconductor material to the first depth;
an interior portion between the first edge portion and the second edge portion, and extending below the surface of the semiconductor material to a second depth, less than the first depth;
a first conductive region in the semiconductor material extending below the interior portion and having the particular conductivity type;
a second conductive region in the semiconductor material extending below the first edge portion and having the particular conductivity type; and
a third conductive region in the semiconductor material extending below the second edge portion and having the particular conductivity type;
wherein the first conductive region has a conductivity level higher than a conductivity level of the semiconductor material, and wherein the second conductive region and the third conductive region each have a conductivity level lower than the conductivity level of the first conductive region.