RECESS STRUCTURE FOR PADLESS STACK VIA
Abstract:
Disclosed is a stack via structure in which a plurality of vias are stacked over each other. At least one via is a via that has a recess formed from a top surface thereof. Another via above the via is formed such that a bottom portion of the another via is in the recess of the via. In this way, no capture pad is needed between the via and the another via. Also, contact area between the via and the another via is enhanced.
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