Patent ID: 11923355
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A method of forming a semiconductor device, the method comprising:
forming deep trenches in a substrate;
forming a trench capacitor structure comprising a layer stack including at least two metallic electrode layers interlaced with at least one node dielectric layer in the deep trenches;
doping the substrate to form a base of a transistor structure;
doping the base to form a first terminal and a second terminal;
forming a first series of connecting structures including via structures and at least one metal interconnect structure to electrically connect the first terminal and a first metallic electrode layer of the at least two metallic electrode layers; and
forming a second series of connecting structures including via structures and at least one metal interconnect structure to electrically connect the second terminal and a second metallic electrode layer of the at least two metallic electrode layers.