Patent ID: 6780734
Filing Date: 2004-08-24
Classification: H01L

Abstract:
A method of extracting an individual chip from a semiconductor wafer comprising a plurality of individual chips separated by scribe lines comprising:positioning the wafer on a wafer table, the wafer table having an absorption plate having an upper face for supporting a lower surface of the wafer and a plurality of chip absorbers provided on the absorption plate, each chip absorber corresponding to and arranged below one of the plurality of individual chips; removably attaching the semiconductor wafer to the wafer table by applying a vacuum directly to portions of the lower surface of the semiconductor wafer adjacent the chip absorbers; sawing the wafer along the scribe lines to separate the individual chips from one another, each individual chip being removably attached to a corresponding chip absorber by vacuum applied to a rear surface of the chip; selectively elevating a first chip relative to the upper face of the adsorption plate by raising the corresponding chip absorber; and transferring the first chip from the corresponding chip absorber to a chip transfer device.