Patent ID: 11886118
Assignee: SHIN-ETSU CHEMICAL CO., LTD.
Field: Optics (Instruments)
Classification: CPC G  C  H | IPC C  G  H

Claim 15:
16. A patterning process comprising:
forming an organic film by using the material for forming an organic film according to claim 1 on a body to be processed;
forming an inorganic hard mask selected from a silicon oxide film, a silicon nitride film, a silicon oxynitride film, a titanium oxide film, and a titanium nitride film on the organic film;
forming a resist upper layer film by using a photoresist composition on the inorganic hard mask;
forming a circuit pattern in the resist upper layer film;
transferring the pattern to the inorganic hard mask by etching the inorganic hard mask while using the resist upper layer film having the formed pattern as a mask;
transferring the pattern to the organic film by etching the organic film while using the inorganic hard mask having the transferred pattern as a mask; and
further transferring the pattern to the body to be processed by etching the body to be processed while using the organic film having the transferred pattern as a mask.