A substrate includes a substrate base, first contact parts arranged in a pattern on a surface of the substrate base, and leads respectively having a generally U-shape with a flexible part, a first end fixed to a corresponding one of the first contact parts, and a second end that is located a predetermined distance away from the first end relative to the surface of the substrate base. The first and second ends of each of the leads are substantially aligned in a direction perpendicular to the surface of the substrate base in a state where the second end of each lead is pushed by a target object and deformed thereby in order to electrically connect the substrate to the target object.