In a touch panel having a structure in which a first layer in which a first sensor electrode in the form of a mesh of fine lines is formed and a second layer in which a second sensor electrode in the form a mesh of fine lines is formed are overlaid on one another with a transparent insulator between them, a first dummy wiring that constitutes a first mesh pattern with the first sensor electrode is formed in the first layer and a second dummy wiring that constitutes a second mesh pattern with the second sensor electrode is formed in the second layer. The first mesh pattern and the second mesh pattern are identical to each other in a pair of tiling periodicity directions and translational periods corresponding thereto.