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

Claim 6:
7. 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 semiconductor substrate is divided into a first region and a second region;
the first region has a higher component density than the second region;
the first isolation structure is positioned within the first region; and
the second isolation structure is positioned within the second region.