A reflective liquid crystal display device of the present invention has the following construction. Only one polarization film is needed. The twist angle of the nematic liquid crystal layer is set in the range of 0° to 90°. The product of the birefringence of the nematic liquid crystal layer &Dgr;nLC and the thickness of the liquid crystal layer dLC, &Dgr;nLC·dLC, is in the range of 0.35 &mgr;m to 0.50 &mgr;m. The birefringence difference, &Dgr;R=RFilm−&Dgr;nLC·dLC is in the range of −0.20 &mgr;m to 0.00 &mgr;m. When a reflective liquid crystal display device is seen from a side of a substrate positioned at the upper side, the direction of the liquid crystal which is twisted to a side of a substrate positioned at the lower side is designated as the positive direction, &phgr;LC represents an angle between the base line and the longer axis direction of the liquid crystal molecule which is positioned most closely to a first substrate, &phgr;F represents an angle between the base line and the retardation axis direction of the polymer film, &phgr;P represents an angle between the base line and the adsorption axis direction of the polarization film, &phgr;F−&phgr;LC is in the range of 70° to 110°and &phgr;P−&phgr;F is in the range of −90° to −60°.