Patent ID: 7842557

Claim:
A method of manufacturing a nonvolatile storage device which includes a plurality of bit lines arranged in a column direction on a substrate; a plurality of word lines arranged in a row direction on the substrate; a memory cell array having a plurality of memory cells each of which is arranged at each of intersections of the bit line and the word line, where a store state of each of the memory cells changes according to an electric signal relatively applied to the word line and the bit line; a word line selection unit having a needle relatively movable with respect to the substrate which comes into contact with one word line of the plurality of word lines, setting the word line in contact with the needle to a selection state; and a sense amplifier detecting through the bit line the store state of the memory cell to be connected to the word line which is set to the selection state by the word line selection unit, the method comprising: forming a conductive material film which becomes the word lines electrically connecting the memory cells of the same row on the substrate; forming a mask on the conductive material film for forming the word line by lithography using any one of a nanoimprint, an electron beam exposure, and a block copolymer; forming the word lines using the mask by removing at least the conductive material film within a region not being masked; and placing the needle movable in a direction perpendicular to an extending direction of the word lines, coming into contact with one of the plurality of the word lines.