Patent ID: 6580957
Filing Date: 2003-06-17
Classification: B23K,G06K,H01L

Abstract:
A method of producing semiconductor chips wherein the semiconductor chips are fabricated, packaged and characterized, comprising:characterizing semiconductor chips as suitable for use or not suitable for use; and marking with identifying indicia only those semiconductor chips which are characterized as suitable for use, by: positioning at least a first semiconductor chip characterized as suitable for use at a first marking location; marking the at least a first semiconductor chip characterized as suitable for use at the first marking location while positioning at least a second semiconductor chip characterized as suitable for use at a second marking location; and marking the at least a second semiconductor chip characterized as suitable for use at the second marking location while removing the at least a first semiconductor chip characterized as suitable for use from the first marking location and positioning at least a third semiconductor chip characterized as suitable for use at the first marking location.