A touch panel includes a substrate and a first sensor element disposed on the substrate. The first sensor element includes a light-shielding conductive layer, a first transparent conductive layer, a first photosensitive layer, and a first electrode electrically connected to the first photosensitive layer. The light-shielding conductive layer and the first transparent conductive layer are interposed between the first substrate and the first photosensitive layer. A transmittance of the light-shielding conductive layer is smaller than a transmittance of the first transparent conductive layer.