Patent ID: 7842613
Filing Date: 2010-11-30
Classification: B81C,H01L

Abstract:
1. A method of forming a substrate for microelectronic packaging, comprising: forming a substrate having a plurality of electrically conductive signal pads on a first surface thereof; selectively etching through a second surface of the substrate to define a through-substrate trench that exposes underlying portions of the electrically conductive signal pads and also define through-substrate slots extending between respective pairs of the electrically conductive signal pads; then forming a metal seed layer on the second surface of the substrate; then selectively electroplating wraparound electrodes onto the second surface, etched sidewalls of the trench and onto the underlying portions of the electrically conductive signal pads; and selectively removing portions of the metal seed layer from the second surface of the substrate, using the wraparound electrodes as removal masks.