According to one embodiment of the invention, a display device comprises a display region including a plurality of pixel regions and a demarcating pattern of the pixel regions. The display device further comprises a first substrate having a first main surface; a plurality of first detection electrodes formed on the first main surface; and a plurality of second detection electrodes formed on the first main surface. The display device further comprises a plurality of first connection electrodes formed on the first main surface and a plurality of second connection electrodes formed on the first connection electrodes via the demarcating pattern. Each of the first connection electrodes connects the first detection electrodes adjacent to each other; and each of the second connection electrodes connects the second detection electrodes adjacent to each other.