Invention Grant
US09560771B2 Ball grid array and land grid array having modified footprint 有权
球栅阵列和焊盘网格阵列具有修改的占位面积

Ball grid array and land grid array having modified footprint
Abstract:
An apparatus includes a substrate having a surface and a plurality of solder balls arranged on the surface to form a ball grid array. A portion of the plurality of solder balls is arranged to have a pitch between adjacent solder balls. The adjacent solder balls having the pitch have a shape of a truncated sphere. At least one solder ball of the plurality of solder balls is included in a solder island on the surface having a shape that is different than the shape of the truncated sphere.
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