Patent ID: 11908729
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An integrated circuit, comprising:
a semiconductor substrate having a surface;
a first isolation structure along the surface, the first isolation structure having a first feature dimension and a first sidewall slope;
a second isolation structure along the surface, the second isolation structure having a second feature dimension greater than the first feature dimension, the second isolation structure having a second sidewall slope within a 15 degrees of deviation from the first sidewall slope;
a transistor structure laterally isolated by the first isolation structure; and
a circuit component integrating the second isolation structure;
wherein the first feature dimension includes a first inter-trench spacing; and

the second feature dimension includes a second inter-trench spacing at least 2 times greater than the first inter-trench spacing.