Patent ID: 6464444
Filing Date: 2002-10-15
Classification: H01L,H05K,Y10T

Abstract:
An apparatus for peeling a plurality of chips of a wafer off a sheet attached to a reverse side of the wafer, comprising:a peeling base having integrally formed therein (1) a plurality of quadrangular pyramidally shaped first protrusions positioned on said peeling base so as to be aligned with predetermined locations on the chips and having respective tops for supporting the chips and (2) a plurality of quadrangular pyramidally shaped second protrusions positioned on said peeling base lower than said first protrusions and having respective tops for supporting the chips when said chips are curved; and a vacuum source in operating relationship with said peeling base and communicating with gaps in said peeling base between adjacent ones of said first protrusions or adjacent ones of said second protrusions, for attracting said sheet to peel each of the chips off the sheet.