Patent ID: 8786099
Filing Date: 2014-07-22
Classification: H01L,H05K

Abstract:
1. A wiring substrate comprising: a substrate body made of an inorganic material; a first electrode portion, having a rectangular plane shape, which penetrates through the substrate body in a thickness direction of the substrate body; a second electrode portion, having a rectangular plane shape, which penetrates through the substrate body in the thickness direction and faces the first electrode portion at a prescribed interval; and a signal electrode, which is provided between the first electrode portion and the second electrode portion and penetrates through the substrate body in the thickness direction, wherein: the first electrode portion is a ground electrode, and the second electrode portion is a power electrode; the first electrode portion includes a plurality of ground electrodes; the second electrode portion includes a plurality of power electrodes; the ground electrodes and the power electrodes are arranged alternately at prescribed intervals in each of an X direction and a Y direction which are perpendicular to each other; the signal electrode is interposed between one of the ground electrodes and one of the power electrodes which are opposed to each other; and the signal electrode has a circular plane shape.