Patent ID: 11901383
Assignee: OMNIVISION TECHNOLOGIES, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. The method of claim 1, wherein the transistor is a first transistor, the method further comprising fabricating a second transistor by:
forming a second recess to a third depth in the substrate material, the second recess corresponding to a second gate region and extending in the channel length direction and the channel width direction;
forming a second trench structure in the substrate material by deepening the second recess to a fourth depth using the isotropic process;
forming a second gate portion of the isolation layer on the substrate material such that the second gate portion of the isolation layer extends into the second trench structure; and
forming a second gate on the isolation layer such that the second gate extends into the second trench structure.