Patent ID: 7109072
Filing Date: 2006-09-19
Classification: B82Y,H01L,Y10S

Abstract:
1. A manufacturing method of a field effect transistor, comprising the steps of: (a) preparing an SOI substrate having a first substrate, an insulating film formed on said first substrate, and a semiconductor layer formed on said insulating film; (b) processing said semiconductor layer into semiconductor pieces; (c) partly removing said insulating film below said semiconductor pieces; (d) forming an organic material film which partly covers an upper surface and a lower surface of said semiconductor pieces located in a region where said insulating film has been removed in said step (c) and covers a surface of said first substrate; (e) separating said semiconductor pieces from said insulating film; (f) dissolving said organic material film into organic solvent to separate said semiconductor pieces from said first substrate, and then, collecting said semiconductor pieces; and (g) forming a field effect transistor on a second substrate by using said semiconductor pieces.