Patent ID: 11876054
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. An overlay mark, comprising:
a first feature extending in an X-direction, wherein the first feature is a first distance from a substrate;
a second feature extending in a Y-direction perpendicular to the X-direction, wherein the second feature is a second distance from the substrate, and the second distance is different from the first distance, wherein at least one of the first feature or the second feature comprises a conductive material; and
a third feature extending in the X-direction and the Y-direction, wherein the third feature is a continuous feature, the third feature is a third distance from the substrate, and the third distance is different from the first distance and the second distance, and
wherein the first distance, the second distance and the third distance from the substrate are along a Z-direction perpendicular to both the X-direction and the Y-direction.