Patent ID: 11934100
Assignee: SHIN-ETSU CHEMICAL CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. A patterning process for forming a pattern in a body to be processed, comprising steps of:
forming an organic film by using a coating-type organic film material on a body to be processed;
forming a silicon-containing resist underlayer film on the organic film by using the composition for forming a silicon-containing resist underlayer film according to claim 3;
forming a resist upper layer film on the silicon-containing resist underlayer film by using a resist upper layer film composition composed of a photoresist composition;
forming a circuit pattern in the resist upper layer film;
transferring the pattern to the silicon-containing resist underlayer film by etching while using the resist upper layer film having the formed circuit pattern as a mask;
transferring the pattern to the organic film by etching while using the silicon-containing resist underlayer film having the transferred pattern as a mask; and
transferring the pattern to the body to be processed by etching while using the organic film having the transferred pattern as a mask.