Patent ID: 8213185
Filing Date: 2012-07-03
Classification: H01L,H05K

Abstract:
1. An interposer substrate for use in a semiconductor apparatus, the semiconductor apparatus comprising the interposer substrate provided between a semiconductor device and a mother board, the semiconductor device being implemented on a surface of the interposer substrate and having a plurality of terminals, the interposer substrate having a ground conductor, the mother board comprising a plurality of electrode pads, wherein a plurality of signals are transmitted between the plurality of terminals of the semiconductor device and the plurality of electrode pads formed on the mother board via a plurality of signal lines formed on the interposer substrate, wherein each of the signal lines comprises: a connection wiring conductor formed on the surface of the interposer substrate, the connection wiring conductor having one end electrically connected to one of the plurality of terminals of the semiconductor device; a via conductor having one end connected to another end of the connection wiring conductor and another end electrically connected to one of the plurality of electrode pads formed on the mother board; and a strip conductor formed on the surface of the interposer substrate, the strip conductor having one end connected to one end of the via conductor and another end of an open end, wherein the strip conductors and the ground conductor are formed so that at least one of the strip conductors and the ground conductor are opposed to each other so as to form at least one capacitor, and wherein a capacitance of the capacitor is adjusted so that phases of the signals transmitted via the respective signal lines have a predetermined relationship at one end of each of the signal lines.