Patent ID: 6900001
Filing Date: 2005-05-31
Classification: G03F

Abstract:
1. A method for forming a shrinkage-controlled photoresist images, comprising the steps of sequentially: a) applying and drying a photoresist onto a surface of a substrate to thereby form a photoresist film on the substrate; thereafter b) imagewise exposing the photoresist film to actinic radiation to thereby form image and nonimage areas of the photoresist film; thereafter c) optionally heating the entire photoresist turn to degrade the non-image areas of the photoresist film; d) overall flood exposing the entire photoresist film to electron beam radiation to thereby cause a chemical change in the image and nonimage areas of the photoresist film; thereafter e) optionally heating the photoresist film again to thereby cause a further chemical change in the photoresist film; thereafter f) developing the photoresist film with a developer, such that the nonimage areas of the photoresist film are removed, and the image areas of the photoresist film remain on the substrate; and g) optionally thereafter again overall flood exposing the image areas of the phororesist film and the substrate to electron beam radiation to thereby further cause a chemical change in the image areas of the photoresist film.