A printed circuit board includes: an insulating material; a metal layer disposed on a first surface of the insulating material and including an opening; a pad disposed along a second surface of the insulating material; a via hole penetrating through the insulating material and extending from the pad to the opening; and a conductor disposed along the opening and the via hole. A diameter of a portion of the via hole adjacent to the opening is smaller than a diameter of a portion of the opening adjacent to the via hole.