Semiconductor device including an LSI chip and a method for manufacturing the same

A method for manufacturing a semiconductor device, comprising:

• (A) preparing a individually divided LSI chip including an externally connected pad;
• (B) forming an insulating layer made of a nonphotosensitive resin on the LSI chip;
• (C) irradiating a position on the insulating layer corresponding to the externally connected pad with laser light, to form an opening in the insulating layer in such a way that part of the insulating layer is left in the position corresponding to the externally connected pad;
• (D) carrying out dry etching or wet etching at bottom of the opening, to remove the insulating layer left in the position corresponding to the externally connected pad, and then to form a via hole passing through the insulating layer so that the externally connected pad is exposed
• (E) forming a wiring layer extending along the insulating layer through the via hole to the externally connected pad.