Patent ID: 8598017
Filing Date: 2013-12-03
Classification: H01L

Abstract:
1. A manufacturing method of a fiber SOI substrate comprising: a step of forming an amorphous, micro-crystal, or polycrystal semiconductor thin film on at least one surface of a fiber having a polygonal cross section; a step of crystallizing the semiconductor thin film by using one of a thermal annealing and a laser annealing; a step of forming on the surface of the fiber a plurality of grooves that extend in a linear direction of the fiber and are arranged at intervals in a width direction before forming the semiconductor thin film; a step of previously forming a plurality of initial grooves on a surface of a base material that is used to form the fiber; a step of forming the fiber by fiber drawing of the base material and, at the same time, narrowing the initial grooves of the fiber to have a predetermined width, thereby providing the grooves of the fiber and a step of forming an insulative or a semiconductor thin film on the surface of the fiber comprising the grooves before crystallizing the semiconductor thin film.