PROBLEM TO BE SOLVED: To provide a fingerprint detection device and a display device capable of suppressing the occurrence of an unintended pattern. A fingerprint detection device has a plurality of drive electrodes and a plurality of detection electrodes. The detection electrode has a plurality of first straight line portions, a plurality of second straight line portions extending in a direction intersecting the first straight line portion, and a bent portion connecting the first straight line portion and the second straight line portion. ing. The drive electrode is between a plurality of electrode portions arranged apart from each other in a plan view, a connection portion connecting adjacent electrode portions in the second direction, and two detection electrodes in the first direction. It has a dummy electrode portion which is arranged between two electrode portions arranged side by side and is in a floating state. [Selection diagram] FIG. 15【課題】意図しない模様の発生を抑制することができる指紋検出装置及び表示装置を提供する。【解決手段】指紋検出装置は、複数の駆動電極と、複数の検出電極を有している。検出電極は、複数の第１直線部と、第１直線部と交差する方向に延びる複数の第２直線部と、第１直線部と第２直線部とを接続する屈曲部と、を有している。駆動電極は、平面視で、互いに離して配置された複数の電極部と、第２方向に隣り合う電極部同士を接続する接続部と、２つの検出電極の間であって、第１方向に並べられた２つの電極部の間に配置され、フローティング状態にあるダミー電極部と、を有している。【選択図】図１５
