Patent ID: 7718284

Claim:
A printed circuit board comprising: an insulating layer having one surface and the other surface while including first and second regions that are adjacent to each other and a third region that is adjacent to said first region on said one surface; a first conductor layer formed on said first region of said insulating layer; a second conductor layer formed on said second region of said insulating layer; a first extraction portion formed so as to extend from said first conductor layer to said third region of said insulating layer; a second extraction portion formed so as to extend from said second conductor layer to said third region of said insulating layer; a metal layer that has electrical conductivity and acid resistance and is formed on said first and second conductor layers and said first and second extraction portions; and a cover insulating layer formed on the insulating layer that covers an interface between said metal layer and said insulating layer at least on said first and second regions of said insulating layer, wherein a bent portion is provided at a boundary between said first region and said second region, and said third region is provided so that at least part of said first extraction portion and at least part of said second extraction portion on said third region are not overlapped with said second region when said first and second regions are bent at said bent portion with said one surface as an inner side.