Patent ID: 8389406
Filing Date: 2013-03-05
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, the method comprising: preparing a semiconductor substrate formed with an electrode pad on a main surface side; forming a first insulating layer from an insulating material so as to cover the electrode pad and the semiconductor substrate, the first insulating layer provided with a first opening through which a portion of the electrode pad is exposed; forming a first redistribution layer on the first opening and on the first insulating layer from a first electrically conductive material; forming a second insulating layer from an insulating material, the second insulating layer provided with a second opening through which a portion of the first redistribution layer that is superimposed on the first opening is exposed, and the second insulating layer being formed so as to cover portions of the first redistribution layer other than those of the second opening and to cover the first insulating layer; forming a second redistribution layer on the second opening and on the second insulating layer from a second electrically conductive material; and first processing when forming the first redistribution layer, in which, the first electrically conductive material is filled in the first opening to form a via interconnect and thereafter the first redistribution layer is formed on the first insulating layer with the first electrically conductive material such that the first redistribution layer is electrically connected to the via interconnect, wherein the first processing includes