Patent ID: 7136145
Filing Date: 2006-11-14
Classification: B82Y,G03F

Abstract:
1. An apparatus for forming a pattern, said apparatus comprising: a photomask for light exposure provided with both a first aperture having a minute width where a main component of transmitted light is evanescent light and a second aperture having a larger width than that of said first aperture where a main component of transmitted light is propagating light; a sample stand for placing a substrate to be processed on which a photoresist with a film thickness equal to or smaller than a width of the first aperture is formed; a stage for placing the photomask; a light source for generating light for exposure; and means for controlling a distance between the substrate to be processed and the photomask, wherein the width of said second aperture is smaller than a designed dimension of said photomask and the width of said second aperture is longer than a wavelength of light for exposure.