Patent ID: 6017683
Filing Date: 2000-01-25
Classification: G03F,Y10S

Abstract:
A pattern forming method comprising:a first step of forming a resist film by coating a semiconductor substrate with a pattern forming material including a polymer having a group which generates an acid when the polymer is heated, and a compound which generates a base when the compound is irradiated with an energy beam;a second step of generating the acid from the polymer by heating the resist film;a third step of irradiating the resist film with the energy beam through a mask having a desired pattern shape, generating the base from the compound in an exposed area of the resist film and thereby neutralizing the acid which has been generated from the polymer with the base which has been generated from the compound in the exposed area of the resist film;a fourth step of supplying a metal alkoxide onto the resist film and forming a metal oxide film on a surface of an unexposed area of the resist film; anda fifth step of forming a resist pattern of the resist film by dry-etching the resist film by using the metal oxide film as a mask.