Fingerprint detection device and display device

A fingerprint detection device, comprising:

• a substrate having a first surface and a second surface on an opposite side of the first surface, the first surface serving as a detection surface configured to detect an unevenness of a finger in contact or in proximity thereto;
• a light shield disposed at the second surface;
• a detection electrode;
• and
• a switching element at the second surface, the light shield being provided between the second surface and the switching element, wherein the switching element comprising:
• a semiconductor layer;
• a gate electrode facing the second surface, the semiconductor layer being provided between the second surface and the gate electrode;
• and
• a source electrode and a drain electrode that face the second surface, the semiconductor layer being provided between the second surface and part of the source and drain electrodes, and the part of the drain electrode being in contact with the semiconductor layer through a first contact hole,
• the light shield has a wire portion overlapping the gate electrode,
• the light shield that overlaps with the gate electrode is formed in a same layer as a layer in which the detection electrode is formed, and
• the detection electrode is coupled with the drain electrode through a second contact hole without overlapping any portion of the gate electrode and is configured to be applied with a drive signal that produces an electrostatic capacitance to detect the unevenness.