Invention Grant
US07312618B2 Method and system for compensating thermally induced motion of probe cards 失效
用于补偿探针卡热诱导运动的方法和系统

Method and system for compensating thermally induced motion of probe cards
Abstract:
A method and system for compensating for thermally induced motion of probe cards used in testing die on a wafer are disclosed. A probe card incorporating temperature control devices to maintain a uniform temperature throughout the thickness of the probe card is disclosed. A probe card incorporating bi-material stiffening elements which respond to changes in temperature in such a way as to counteract thermally induced motion of the probe card is disclosed including rolling elements, slots and lubrication. Various means for allowing radial expansion of a probe card to prevent thermally induced movement of the probe card is disclosed. A method for detecting thermally induced movement of the probe card and moving the wafer to compensate is also disclosed.
Information query
Patent Agency Ranking
0/0