POLARIZATION MEMBER AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

A polarization member having at least a Cholesteric liquid crystal layer (1), a quarter-wavelength plate (2), and an optically active layer (3). A liquid crystal display device using this polarization member, which rotates, via the optically active layer, a linearly polarized polarization surface disposed via the Cholesteric liquid crystal layer and the quarter-wavelength plate to supply linearly polarized light to an absorbing polarization plate with the polarization surface kept aligned with a polarization axis, and which is enhanced in brightness due to absorption loss prevention and is excellent in display grade. This liquid crystal display device, being enhanced in brightness by using a Cholesteric liquid crystal layer, can restrict coloring uniformly in oblique-direction omnibearing without compromise in frontal-direction visibility characteristics.