This sensor is provided with: a conductor layer; a detecting layer which has a detecting region, and includes a plurality of detecting sections that are two-dimensionally disposed in the detecting region; and a plurality of structures that separate the conductor layer and the detecting layer from each other. Among the detecting sections, at least a detecting section on the circumferential end side of the detecting region is provided at a position shifted further toward the inside from the circumferential end of the detecting region than a reference position of the two-dimensional disposition.