Display device

A display device comprising:

• a display panel, a reflective polarization plate, a polarization control panel, a polarization plate, and an optical layer arranged in a stated order along a third direction, which is one of a first direction, a second direction, and the third direction that intersect each other, wherein
• the reflective polarization plate transmits a component polarized in the first direction and reflects a component polarized in the second direction, in light incident on the reflective polarization plate,
• the polarization control panel is switchable between a first state in which light incident on the polarization control panel has its polarization direction changed and is transmitted accordingly and a second state in which the incident light has its polarization direction maintained and is transmitted accordingly,
• the polarization plate transmits a component polarized in the first direction or a component polarized in the second direction, in light incident on the polarization plate, and
• the optical layer disturbs a polarization direction of light incident on the optical layer and transmits the light accordingly,
• the reflective polarization plate includes a first wave plate, a circular polarization reflection layer, and a second wave plate arranged in a stated order along the third direction when viewed from the side of the display panel,
• the first wave plate transforms a component of light incident on the first wave plate polarized in the first direction into a component circularly polarized in a first rotational direction and transmits resultant light,
• the circular polarization reflection layer transmits a component circularly polarized in the first rotational direction and reflects a component circularly polarized in a second rotational direction opposite to the first rotational direction, in light incident on the circular polarization reflection layer, and
• the second wave plate transforms a component of light incident on the second wave plate circularly polarized in the first rotational direction into a component polarized in the first direction and transmits the resultant light.