Patent ID: 7227263
Filing Date: 2007-06-05
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor chip which has a top surface, wherein the top surface includes an electrode pad; an insulating layer which is formed on the top surface of the semiconductor chip, wherein the insulating layer has an opening which exposes the electrode pad; a conductive member which includes a first portion and a second portion, wherein the first portion is connected to the electrode pad via the opening, and wherein the second portion is extended from the first portion and located on the insulating layer; a post electrode formed on the second portion of the conductive member, wherein the post electrode has a top surface, a side surface and a bottom surface which is connected to the second portion of the conductive member, and wherein the top surface of the post electrode includes a concave portion therein; a sealing resin which seals the top surface of the semiconductor chip, a top surface of the first portion of the conductive member and the side surface of the post electrode, wherein the top surface of the post electrode is exposed from the sealing resin; and an external terminal which is located on the top surface of the post electrode, wherein a part of the external terminal is embedded in the concave portion of the post electrode, wherein a diameter of the concave portion is 10% to 50% of a diameter of the post electrode, and a depth of the concave portion is 20% to 70% of a height of the post electrode.