Patent ID: 8466048

Claim:
A method for manufacturing a semiconductor device, comprising: a step (a) of preparing a substrate; a step (b) of fabricating an island-shaped metal layer on the substrate; a step (c) of depositing an amorphous semiconductor film over essentially an entire surface of the substrate, so as to cover the metal layer; a step (d) of obtaining a crystalline semiconductor film through crystallizing the amorphous semiconductor film through an SLS method using a laser beam of a first illumination energy density; a step (e) of directing a laser beam of second illumination energy density onto at least a first part of the crystalline semiconductor film that is over the metal layer to selectively melt and recrystallize only the first part of the crystalline semiconductor film; and producing a thin film diode that includes, as a semiconductor layer, the first part that has undergone recrystallization, and a thin film transistor that includes, as a semiconductor layer, a second part of the crystalline semiconductor film that is different from the first part.