There is provided a both-side display type display device capable of preferably performing black display both in a light place and in a dark place. There are arranged in order from side A to side B: a first polarization plate (14) for transmitting only the light which is a component of one-direction rectilinear polarized light; a liquid crystal layer (13) for optically rotating the one-direction rectilinear polarized light into the other-direction rectilinear polarized light when no voltage is applied and transmitting the rectilinear polarized light without rotation when voltage is applied; a polarization selection reflection plate (16) for reflecting the one-direction rectilinear polarized light and transmitting the other-direction rectilinear polarized light; and a second polarization plate (15) for absorbing light as a component of the one-direction rectilinear polarized light and transmitting light as a component of the other-direction rectilinear polarized light. The polarization selection reflection plate (16) is arranged only at side B with respect to the liquid crystal layer (13). Thus, it is possible to obtain a both-side display which is viewed as a reflective type from side A and a transmittance type from side B.