To provide a fingerprint detection device and a display device equipped with a fingerprint detection device, which are capable of varying the detection resolution.SOLUTION: The fingerprint detection device includes a substrate, a plurality of photoelectric conversion elements that are provided on the substrate to output signals according to lights irradiated on the respective photoelectric conversion elements, signal lines respectively connected to the plurality of photoelectric conversion elements, a detection circuit electrically connected to the plurality of photoelectric conversion elements via the plurality of signal lines, and a signal line selection circuit that switches the number of signal lines connected to one detection circuit.SELECTED DRAWING: Figure 4【課題】検出の解像度を異ならせることが可能な指紋検出装置及び指紋検出装置付き表示装置を提供する。【解決手段】指紋検出装置は、基板と、基板に設けられ、それぞれに照射された光に応じた信号を出力する複数の光電変換素子と、複数の光電変換素子にそれぞれ接続された信号線と、複数の信号線を介して複数の光電変換素子と電気的に接続される検出回路と、１つの検出回路に接続される信号線の数を切り換える信号線選択回路と、を有する。【選択図】図４
