Patent ID: 7253520
Filing Date: 2007-08-07
Classification: H01L

Abstract:
1. A CSP type semiconductor device, comprising: a semiconductor chip having a main surface on which a circuit is formed and a back surface opposite to the main surface, wherein the back surface has a first edge, a second edge opposite the first edge, and a plurality of grooves extending from the first edge to the second edge; a pad which is formed on the main surface of the semiconductor chip; an oxide film which is formed on the main surface of the semiconductor chip, wherein the oxide film has a main surface and a back surface facing to the main surface of the semiconductor chip; an insulating film which is formed on the main surface of the oxide film and a part of the pad; a conductive film which is formed on the insulating film and the pad; a sealing material which covers the insulating film and a part of conductive film; and a first bump which is formed over the insulating film, wherein the first bump is exposed from the sealing material.