Semiconductor device and method of producing the same

1. A semiconductor device, comprising:

a semiconductor substrate having an internal circuit;

an electrode pad electrically connected to the internal circuit;

an insulating film having a through hole exposing the electrode pad;

a re-distribution wiring pattern formed on the insulating film and electrically connected to the electrode pad;

a recess groove formed in the insulating film, said recess groove being situated outside the re-distribution wiring pattern and disposed adjacent to an edge of the re-distribution wiring pattern; and

a sealing layer filled in the recess groove and covering the re-distribution wiring pattern so that the sealing layer directly contacts with the recess groove.

2. The semiconductor device according to claim 1 , wherein said recess groove has a depth smaller than a thickness of the insulating film.

3. The semiconductor device according to claim 1 , wherein said recess groove is disposed in an area between the re-distribution wiring pattern and an adjacent re-distribution wiring pattern.

4. The semiconductor device according to claim 1 , wherein said insulating film is formed of an insulating resin material with photosensitivity.

5. The semiconductor device according to claim 1 , further comprising a metal base layer, said re-distribution wiring pattern being formed on the insulating film with the metal base layer inbetween.

6. The semiconductor device according to claim 1 , further comprising a post electrode formed on the re-distribution wiring pattern.