Patent ID: 8871627

Claim:
A method of manufacturing a semiconductor device, the method comprising: preparing a semiconductor wafer on an upper surface of which a low dielectric film wiring line laminated structure portion is formed, the low dielectric film wiring line laminated structure portion including low dielectric films and wiring lines, the low dielectric films having a relative dielectric constant of 3.0 or lower, and a passivation film made of an inorganic material being formed on the low dielectric film wiring line laminated structure portion; removing parts of the low dielectric film wiring line laminated structure portion in regions of dicing streets and regions on opposite sides of each of the dicing streets by applying laser beams, thereby forming grooves which expose side surfaces of the low dielectric film wiring line laminated structure portion; forming a first organic resin film covering the side surfaces of the low dielectric film wiring line laminated structure portion; and cutting the semiconductor wafer along the dicing streets, thereby obtaining a plurality of semiconductor devices.