Patent ID: 7638408

Claim:
A manufacturing method of a substrate provided with semiconductor films comprising the steps of: preparing a plurality of single crystal semiconductor substrates each with an upper surface with an insulating layer formed thereover, a bonding layer formed over the insulating layer, and a damaged region formed in a region at a predetermined depth; preparing a base substrate; arranging the plurality of single crystal semiconductor substrates on a tray; bonding the base substrate and the plurality of single crystal semiconductor substrates by disposing the plurality of single crystal semiconductor substrates arranged on the tray in close contact with the base substrate with the bonding layers interposed therebetween to bond surfaces of the bonding layers and a surface of the base substrate; and generating cracks in the damaged regions by heating the plurality of single crystal semiconductor substrates to obtain the base substrate to which a plurality of first single crystal semiconductor layers that are separated off from the plurality of single crystal semiconductor substrates are attached, wherein each of the insulating layers comprises at least one insulating layer over each of the single crystal semiconductor substrates; wherein a formation step of the damaged region includes forming the damaged region in the single crystal semiconductor substrate by exciting a source gas to generate plasma, and then adding an ion species included in the plasma to the single crystal semiconductor substrate with the insulating layer formed thereover; and wherein a formation step of the bonding layer includes forming the bonding layer over the single crystal semiconductor substrate with the insulating layer interposed therebetween after the formation step of the damaged region.