Patent ID: 8899402

Claim:
A positioning jig for using when adjusting projection positions of supporting members that support a semiconductor wafer having a predetermined dimension into a circular opening of a conveying tool for conveying the semiconductor wafer, the conveying tool including: a conveying tool main body containing the opening which has a larger diameter than a diameter of the semiconductor wafer; and the supporting members for supporting the semiconductor wafer in a concentric fashion at the projection positions projected from an inner edge of the conveying tool main body into the opening, the supporting members being at least three supporting members and constituting a position adjusting mechanism, each supporting member having a predetermined length, being provided with a plurality of pins arranged thereon corresponding to the diameter of the semiconductor wafer, and being slidably arranged on the conveying tool main body on a straight line toward a center of the opening, the positioning jig comprising: a positioning jig main body including a circular part with a diameter that is identical with the diameter of the semiconductor wafer and plural protrusion parts protruded from predetermined positions of the circular part to at least three directions; and projection portions being respectively provided in the protrusion parts and connecting a periphery portion of the conveying tool main body around the opening, wherein each of the projection portions is arranged at a position that is away from a center of the circular part by a distance that is longer than a radius of the opening, and when adjusting the projection positions of the supporting members so that the pins come into contact with an outer edge of the circular part, the projection portions are installed into the periphery portion of the conveying tool main body.