Patent ID: 7135354

Claim:
A method of manufacturing a semiconductor device comprising: forming a resin layer on a semiconductor substrate in which a plurality of integrated circuits are formed; making a surface of the resin layer uneven by forming a plurality of recesses therein; forming an interconnecting line on the resin layer, the interconnecting line contacting the surface of the resin layer with an interior of the plurality of recesses along which the interconnecting line passes; and cutting the semiconductor substrate into a plurality of semiconductor chips; wherein each of the plurality of recesses is formed to have an opening width that is less than a thickness of the interconnecting line, and to have a depth of at least 1 μm, the resin is formed of a photosensitive resin precursor, photolithography using a mask is applied during the step of forming the plurality of recesses, the mask includes a transparent-and-opague pattern for irradiating the resin layer with a predetermined pattern that matches the transparent-and-opague pattern, the transparent-and-opaque pattern prevents the photosensitive resin precursor from being completely resolved by controlling an amount of energy applied to the resin layer during photolithography, and the transparent-and-opaque pattern prevents the recesses from penetrating an entire thickness of the resin layer.