Patent ID: 7562922

Claim:
A wafer clamp having a changeable supporting part, comprising: a main body and a supporting part, said supporting part comprising a pressing part; a clamping part; a connecting part; and a hinderer, wherein said main body is made of a metal plate formed into a ‘V’ shape having said clamping part as an end and said connecting part as the other end, wherein said supporting part has a soldering area on a back surface of said supporting part and has a front surface configured to support a wafer, the supporting part having an area bigger than one fifteenth area of said wafer, wherein said connecting part is soldered on said soldering area, wherein said supporting part is changeable by desoldering said connecting part and soldering a different supporting part on said connecting part, wherein a row of linear columns extends from said clamping part, each linear column extending substantially parallel to said main body, and wherein said hinderer is extended from a side of said connecting part and is turned perpendicularly to a side of said supporting part.