发明申请
US20050077081A1 Robust high density substrate design for thermal cycling reliability 有权
坚固的高密度基板设计,用于热循环可靠性

Robust high density substrate design for thermal cycling reliability
摘要:
A semiconductor package for a die with improved thermal cycling reliability. A first layer of the package provides ball pads dispersed throughout. A second layer of the package provides signal traces. A high stress area associated with the corner of the dies is defined. Preferably the high stress area is defined as two ball pitches away from the corner of the die. Signal traces are routed away from the high stress area and in particular signal traces are routed away from the ball pads associated with the high stress to eliminate the cracks in the routed traces.
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