Patent ID: 6506628
Filing Date: 2003-01-14
Classification: H01L

Abstract:
A method of attaching at least one semiconductor die having an active surface thereon to at least one lead of a leadframe having a plurality of leads, comprising:providing a semiconductor wafer having a plurality of semiconductor dice formed thereon; separating the plurality of semiconductor dice formed on said semiconductor wafer, each semiconductor die of said plurality of semiconductor dice having an active surface; identifying criteria for an acceptable semiconductor die of said plurality of semiconductor dice; identifying the acceptable semiconductor die having said identifying criteria; applying an adhesive in a wet film state in a form of one of a liquid and a paste in a predetermined pattern to portions of the active surface of said acceptable semiconductor die; partially curing the adhesive from the wet film state to an intermediate tacky and flowable state while on the portions of the active surface of said acceptable semiconductor die; removably attaching a portion of said at least one lead of the plurality of leads of the leadframe to a portion of the active surface of said acceptable semiconductor die using the intermediate partially cured tacky and flowable state of said adhesive; identifying additional criteria of said acceptable semiconductor die attached to the leadframe; testing said semiconductor die attached to said at least one lead of said plurality of leads of said leadframe to determine if the additional criteria are present in said semiconductor die; removing the at least one lead of said plurality of leads of said leadframe attached to said semiconductor die from said semiconductor die determined to be an unacceptable semiconductor die based on said testing; and reworking the unacceptable semiconductor die.