Patent ID: 6743572
Filing Date: 2004-06-01
Classification: G03F

Abstract:
A method for structuring a photoresist layer, comprising the steps of:preparing a substrate having a photoresist layer which is applied at least in subregions, the photoresist layer comprising a film-forming polymer that comprises molecular groups that can be converted into alkali-soluble groups through acid-catalyzed separation reactions, and a photobase generator that releases a base when irradiated with light from a defined wavelength range; irradiating the photoresist layer in the subregions with light from the defined wavelength range; contacting the photoresist layer with an acid over a defined period of time, during which the acid diffuses into the photoresist layer; heating the photoresist layer to a temperature at which the acid-catalyzed separation reaction takes place; and developing the photoresist layer by means of an alkaline solution.