Patent ID: 8470516

Claim:
A method of generating a relief pattern, comprising disposing a resist composition on a substrate to form a film, the resist composition comprising: a blend of polymers consisting essentially of a first silsesquioxane polymer of the formula (1): wherein m is an integer greater than zero, n is an integer greater than or equal to zero, R 2 is a carbon functional group containing at least one carbon atom, and R 1 is selected from the group consisting of a second silsesquioxane polymer of the formula (2): wherein R 3 is a functional group comprising at least one carbon atom, p is an integer greater than zero, and q is an integer greater than or equal to zero; and a photosensitive acid generator; patternwise exposing the film by e-beam lithography; heating the exposed film to effect crosslinking of the first polymer and second polymer in the exposed area; and developing the exposed film to form a negative relief pattern.