Patent ID: 11903199
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A through via structure comprising:
a through via including
a metal pattern, the metal pattern extending in a vertical direction and fully enclosing a gap in the metal pattern, wherein the metal pattern includes a seam extending vertically from the gap in the metal pattern, and wherein an etching gas used to form the metal pattern remains in the gap in the metal pattern,
and
a barrier pattern on a sidewall and a lower surface of the metal pattern; and
a capping pattern contacting an upper surface of the through via, the capping pattern including a lowermost edge portion, and the lowermost edge portion of the capping pattern is not higher than a lowermost central portion of the capping pattern.