Patent ID: 7989304

Claim:
A method for transferring a semiconductor element, in which method (I) from a semiconductor substrate (A) on which the semiconductor element is formed, a transferring layer including the semiconductor element is separated by doping hydrogen ions or noble gas ions in the semiconductor substrate (A), and then heat-treating the semiconductor substrate (A), so as to make a chip of the semiconductor element, and (II) the chip of the semiconductor element is transferred onto a substrate (B) on which the semiconductor element is finally mounted, the method comprising: the ion doping step of doping hydrogen ions or noble gas ions in an interface of transferring layer of the semiconductor substrate (A) on which the semiconductor element is formed; the first transfer step of transferring the semiconductor element onto a temporary supporting substrate (C) in such a manner that the semiconductor substrate (A) on which the semiconductor element is formed is bonded onto the temporary supporting substrate (C) with the semiconductor element sandwiched therebetween and the semiconductor substrate (A) and temporary supporting substrate (C) thus bonded are heat-treated so as to separate the transferring layer to the temporary supporting substrate (C) from the semiconductor substrate (A), the temporary supporting substrate (C) having an upper temperature limit equal to or higher than a temperature for repairing crystal defects generated in a transistor channel of the semiconductor element due to the separation; the crystal defect repairing step of repairing the crystal defects by heat-treating the temporary supporting substrate (C) on which the semiconductor element is transferred, at a temperature equal to or higher than a temperature for repairing crystal defects which are generated in the transistor channel of the semiconductor element; and the final transfer step of making the semiconductor element into the chip and transferring the chip of the semiconductor element onto the substrate (B) by a different method from the first transfer step.