A difference between a length Ls of a slit and a length Ld of a dummy electrode is within ±15% of the length Ld. A difference between a length Le in the first direction of a portion between the slits adjacent to each other in the first direction in a detection electrode and the length Ld of the dummy electrode is within ±15% of the length Ld. A difference between a width Ws of the slit and a gap Dde between the dummy electrode and the detection electrode adjacent to each other in the second direction is within ±15% of the gap Dde. A difference between a width We in the second direction of a portion obtained by dividing the detection electrode by the slit and a width Wd of the dummy electrode is within ±15% of the width Wd.