Patent ID: 7338755

Claim:
A method for forming a pattern, comprising: forming a photosensitive layer comprising a photosensitive composition on a substrate; selectively irradiating the photosensitive layer with at least one of an ultraviolet ray and an ionizing radiation; subjecting the substrate to a heat treatment; and developing the photosensitive layer to remove selectively an irradiated area of the photosensitive layer after the heat treatment; wherein photosensitive composition comprises: a polymer material comprising a group having a structure represented by following general formula (3); wherein n represents an integer of 1 or more; wherein Z is selected from the group consisting of —O—. —S—, —SO 2 —, —O—CH 2 —, —O—C(O)—O—, —O—C(O)— and —O—C(O)—CH 2 — and a photo acid generator generating an acid with at least one of an ultraviolet ray and an ionizing radiation.