Patent ID: 11955408
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. An integrated circuit semiconductor device, comprising:
a substrate including a first surface and a second surface opposite the first surface;
active elements on the first surface of the substrate;
through silicon via (TSV) landing parts connected to the active elements, the TSV landing parts being buried in respective trenches within the substrate, and each of the TSV landing parts having:
a first portion spaced apart from the first surface of the substrate, and
a second portion between the first portion and the first surface of the substrate, the first portion being wider than the second portion;

TSV holes in the substrate, the TSV holes extending from the second surface of the substrate and being aligned with bottom surface of the TSV landing parts; and
TSVs connected to the TSV landing parts, respectively, the TSVs being buried in the TSV holes, respectively, wherein some of the TSV landing parts are connected to a power rail part or a ground rail part, wherein a width of each TSV of the TSVs increases and does not decrease in a direction from the first surface to the second surface.