Patent ID: 7723980
Filing Date: 2010-05-25
Classification: G01R,H01L

Abstract:
1. A method of producing at least one known good die on an unsingulated wafer, the at least one known good die having a plurality of pads through which information has been electrically communicated, and those pads being free from probe scrub damage, comprising: providing a wafer having a plurality of untested integrated circuits thereon, each of the plurality of integrated circuits having a plurality of pads thereon; providing a wafer translator having a plurality of soft crushable contact structures disposed on a wafer-side thereof, the wafer translator being removably attachable to the wafer, and having an inquiry-side opposite to the wafer-side; positioning the wafer and wafer translator in proximity to each other, and relative to each other such that the plurality of soft crushable contact structures are aligned to make physical contact with the pads; subsequent to positioning the wafer and wafer translator in proximity to each other, flowing an inert gas between the wafer and wafer translator; subsequent to flowing the inert gas, moving the contact structures of the wafer translator into physical contact with the bond pads of the wafer; subsequent to moving the contact structures of the wafer translator into physical contact with the bond pads of the wafer, drawing a vacuum between the wafer and the wafer translator; electrically testing at least one die on the wafer by communicating first signals to, and receiving second signals from, the at least one die on the wafer; and if the electrical testing determines that the at least one die is a good die, storing, at least temporarily, information regarding the location on the wafer of the at least one good die; wherein the contact structures of the wafer translator do not scrub the pads of the at least one known good die.