Patent ID: 11869770
Assignee: LAM RESEARCH CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A method comprising:
adding a photo-resist material (M2) on top of a base material (M1) of a substrate, M2 defining a pattern for etching M1 in areas where M2 is not present above M1;
conformally capping the substrate with an oxide material (M3) after adding M2;
depositing a layer of a conformal material (M6) after conformally capping the substrate;
gap filling the substrate with filling material M4 after depositing M6;
removing top surfaces of M6 from the substrate after the gap filling;
selectively growing stop-etch material (M5) on exposed surfaces of M3;
removing M4 from the substrate after selectively growing M5; and
etching the substrate after removing M4 to transfer the pattern into M1.