Patent ID: 8808974
Filing Date: 2014-08-19
Classification: G03F,H01L

Abstract:
1. A method for forming a pattern comprising: providing a first positive-working radiation-sensitive resin composition on a substrate to form a first resist layer, the first positive-working radiation-sensitive resin composition comprising: exposing the first resist layer selectively to radiation through a first mask; developing the exposed first resist layer to form a first resist pattern; making the first resist pattern inactive to radiation, or insolubilizing the first resist pattern in an alkaline developer or in a second positive-working radiation-sensitive resin composition; providing the second positive-working radiation-sensitive resin composition on the substrate on which the first resist pattern has been formed to form a second resist layer; exposing the second resist layer selectively in a space area of the first resist pattern to radiation through a second mask; and developing the exposed second resist layer to form a second resist pattern in the space area of the first resist pattern, wherein the crosslinking agent is a compound having two or more groups shown by a following formula (1), a compound having two or more epoxy groups or oxetane groups, or a compound having two or more vinyl groups and a skeleton shown by any one of following formulas (12-1) to (12-4), wherein R wherein R