Patent ID: 6014965
Filing Date: 2000-01-18
Classification: G01R,H01L

Abstract:
A dicing apparatus for dicing a semiconductor wafer, said apparatus comprising:a stage means for supporting a semiconductor wafer thereupon;a shape recognizing apparatus for recognizing a shape of the semiconductor wafer, said shape recognizing apparatus includingan image pickup means for picking up an image of the semiconductor wafer and for providing video signals representing the image, the image pickup means being disposed at a position opposite to a surface of the semiconductor wafer,a shape recognizing means for recognizing the shape of the semiconductor wafer by processing the video signals, the shape recognizing means also having an illuminating means for illuminating a semiconductor wafer in a manner to transmit light through an adhesive sheet with the semiconductor wafer adhered thereto, the illuminating means being disposed opposite to the image pickup means with the adhesive sheet with the semiconductor adhered thereto being interposed between the illuminating means and the image pickup means, wherein said illuminating means is a surface emitting type comprising a light source and a plate for scattering the light source so as to simultaneously illuminate the entire semiconductor wafer and the surrounding adhesive sheet with uniform light so that an image of the complete semiconductor wafer is received by said image pickup means that receives light transmitted through said adhesive sheet; said dicing apparatus further comprisingan alignment means to which the wafer is fed from said shape recognizing apparatus and for adjusting an orientation of said wafer based on the processed video signals;dicing means for dicing said semiconductor wafer;control means coupled to said dicing means and said shape recognizing means for controlling said dicing means to dice the semiconductor wafer in accordance with data obtained from the shape recognizing apparatus.