Patent ID: 11894299
Assignee: TAIWAN SEMICONDUCTOR CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A method for forming a semiconductor device comprising:
forming a first insulating layer over a substrate, the substrate having a conductive feature;
removing portions of the first insulating layer to simultaneously form a first recess, a second recess, and a third recess in the first insulating layer, wherein bottom surfaces of the first recess, the second recess, and the third recess are a surface of the first insulating layer, wherein a depth of the first recess is different than a depth of the second recess;
forming a conductive material in the first recess, the second recess, and the third recess to form a first conductive line in the first recess, a second conductive line in the second recess, and a third conductive line in the third recess, wherein the second conductive line comprises a signal line, wherein the first conductive line and the third conductive line comprise power/ground lines; and
depositing a second insulating layer over the first insulating layer.