Patent ID: 11942398
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device, comprising:
a substrate, comprising an electronic circuitry;
at least one via, passing through the substrate, wherein the at least one via comprises a plurality of concave portions on a sidewall thereof;
a liner layer, filling in the plurality of concave portions of the at least one via; and
a conductive layer, disposed on the sidewall of the at least one via, covering the liner layer, and extending onto a surface of the substrate, wherein a thickness of the conductive layer on the sidewall of the at least one via is varied,
wherein the at least one via has a lower opening and an upper opening wider than the lower opening, and
wherein the electronic circuitry is disposed aside the upper opening of the at least one via.