Patent ID: 6303277
Filing Date: 2001-10-16
Classification: G11B,H01L

Abstract:
A pattern forming method comprising the steps of:forming a first thin film on an object to be etched;forming a first surface region and a second surface region on a surface of the object by modifying or removing a portion of said first thin film, said first and second surface regions differing from each other in a surface state;forming a second thin film selectively on said first surface region by utilizing the difference in the surface state between the first and second surface regions, said second thin film being amorphous and thicker than the first thin film; andetching the object using the second thin film as an etching mask, whereinsaid step of forming said second thin film comprises supplying a mask material onto said first and second surface regions to form said second thin film, said mask material agglomerating selectively on said first surface region by the difference in the surface state between the first and second surface regions.