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NON-CIRCULAR UNDER BUMP METALLIZATION (UBM) STRUCTURE, ORIENTATION OF NON-CIRCULAR UBM STRUCTURE AND TRACE ORIENTATION TO INHIBIT PEELING AND/OR CRACKING
NON-CIRCULAR UNDER BUMP METALLIZATION (UBM) STRUCTURE, ORIENTATION OF NON-CIRCULAR UBM STRUCTURE AND TRACE ORIENTATION TO INHIBIT PEELING AND/OR CRACKING
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机译:凸起金属化(UBM)结构下的非圆形,UBM结构的非圆形取向和痕迹取向,以防止剥落和/或开裂
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摘要
Some exemplary embodiments of this disclosure pertain to a semiconductor package that includes a packaging substrate, a die and a set of under bump metallization (UBM) structures coupled to the packaging substrate and the die. Each UBM structure has a non-circular cross-section along its respective lateral dimension. Each UBM structure includes a first narrower portion and a second wider portion. The first narrower portion has a first width. The second wider portion has a second width that is greater than the first width. Each UBM structure is oriented towards a particular region of the die such that the first narrower portion of the UBM structure is closer than the second wider portion of the UBM structure to the particular region of the die.
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