Patent ID: 8481863

Claim:
A method for manufacturing a substrate having a through electrode formed in at least a portion of a through hole, comprising the steps of: forming, on a surface of the substrate situated in the periphery of a portion where the through hole is formed or will be formed, an uneven portion including at least a plurality of recessed portions or a plurality of projecting portions, and the plurality of recessed portions or the plurality of projecting portions are formed in a peripheral direction of the substrate at positions different from each other with respect to the center of the through hole, and wherein the uneven portion forms at least one groove surrounding the periphery of the through hole and is formed as a part of the substrate; forming the through electrode in the portion of the through hole; forming a close contact layer having a close contact property and a conductive property on an end portion of the through electrode in the through hole and on a surface of the uneven portion; and forming an electrode layer on the close contact layer such that the electrode layer fills at least one of the plurality of recessed portions.