Patent ID: 11923301
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. The method of claim 2 wherein forming the plurality of second metal strips above the part of first metal strips comprises:
forming a dielectric layer above the plurality of second contact vias;
executing a first photolithography operation upon the dielectric layer to generate a first patterned mask, wherein the first patterned mask includes a plurality of strip-shaped openings, wherein a length between two adjacent strip-shaped openings is twice as the length between two adjacent second metal strips;
filling a conductive material into the strip-shaped openings to generate a transition patterned mask;
executing a second photolithography operation upon the transition patterned mask to generate a second patterned mask, wherein the second patterned mask includes a plurality of strip-shaped openings, wherein a length between two adjacent strip-shaped openings is twice as the length between two adjacent second metal strips; and
filling the conductive material into the strip-shaped openings to form the plurality of second metal strips.