Patent ID: 9679770
Date: 2017-06-13
CPC Classifications: H01L

Claim:
1. A method of manufacturing a semiconductor device, the method comprising: forming a base film on a substrate, wherein a top of the base film includes a water-repellent surface; forming a photosensitive film on the base film, wherein a top of the photosensitive film includes a water-repellent surface; developing the photosensitive film to expose the water-repellent surface of the base film, thereby forming a photosensitive film pattern, wherein when viewed in a vertical cross section, the photosensitive film pattern includes the water-repellent surface on the top of the photosensitive film, and when viewed in a vertical cross section, the photosensitive film pattern further includes plural side portions of the photosensitive film that have no water-repellent surface; applying a first spacer material to the water-repellent surface on the top of the photosensitive film, the plural side portions of the photosensitive film, and the exposed base film; drying the substrate on which the first spacer material is applied to the water-repellent surface on the top of the photosensitive film, the plural side portions of the photosensitive film, and the exposed based film such that the first spacer material applied to the plural side portions of the photosensitive film that have no water-repellent surface chemically reacts with the photosensitive film to be solidified, while the first spacer material applied to the water-repellent surface on the top of the photosensitive film hardly reacts chemically with the photosensitive film and does not undergo solidification; and with the first spacer material applied to the water-repellent surface on the top of the photosensitive film, the plural side portions of the photosensitive film, and the exposed base film, removing at least a part of the first spacer material from the water-repellent surface on the top of the photosensitive film and the exposed base film by cleaning the substrate with an organic solvent while, in the removing, leaving the first spacer material solidified on the plural side portions of the photosensitive film when viewed in a vertical cross section, thereby forming a first pattern having a pitch smaller than that of the photosensitive film pattern.