Patent ID: 11881402
Assignee: APPLIED MATERIALS, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. The method of claim 1, wherein
the forming of the gap-filling layer in the first gap-filling process comprises:
delivering flowable dielectric material in the openings of the spacer layer on the first dielectric layer and over the patterned mandrel layer; and
hardening the flowable dielectric material, and

the further forming of the gap-filling layer in the second gap-filling process comprises:
delivering the flowable dielectric material in the openings of the twice patterned mandrel layer;
hardening the flowable dielectric material; and
removing portions of the gap-filling layer from over the patterned spacer layer and the twice patterned mandrel layers.