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

Claim 3:
4. An integrated circuit structure, comprising:
a semiconductor material;
a first active area in the semiconductor material;
a second active area in the semiconductor material;
a third active area in the semiconductor material;
a first transistor in the first active area;
a second transistor in the second active area;
a third transistor in the third active area;
a first conductor forming a control gate of the first transistor;
a second conductor forming a control gate of the second transistor; and
an isolation structure comprising a dielectric material deposited in a trench formed in the semiconductor material between the first active area and the second active area, and in the semiconductor material between the first active area and the third 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; and
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;

wherein the first conductor further forms a control gate of the third transistor;
wherein the isolation structure has an orientation that is parallel to the first conductor and parallel to the second conductor; and
wherein the isolation structure further has an orientation that is orthogonal to the first conductor.