Reflection type liquid crystal display
AssigneeNEC Corporation
InventorsTeruaki Suzuki, Koichi Yanai
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Abstract
The normally white reflection type liquid crystal display of the present invention comprises: a polarization plate; a quarter wavelength plate; a transparent substrate; a transparent electrode; and a twisted nematic liquid crystal layer, wherein said polarization plate, said quarter wavelength plate, said transparent substrate, said transparent electrode, and said twisted nematic liquid crystal layer are layered in sequence from a light inputting side, and the angle between the optical axis of said quarter wavelength plate and the transmission axis of said polarization plate is below 65 degrees and above 45 degrees, or below 45 degrees and above 25 degrees.
Claims6
A reflection type liquid crystal display comprising:
- a polarization plate;
- a quarter wavelength plate with a half phase difference film and a quarter phase difference film;
- an upper substrate;
- a transparent electrode;
- a liquid crystal layer;
- a reflector electrode;
- and
- a lower substrate,
- wherein, said polarization plate, said quarter wavelength plate, said upper substrate, said transparent electrode, said liquid crystal layer, said reflector electrode, and said lower substrate are layered in sequence from a light inputting side, and
- assuming that the orientation direction of liquid crystal molecules adjacent to said upper substrate is zero degrees, and that a twist direction of the liquid crystal molecules from the upper substrate to the lower substrate is positive, the angle of the polarized light absorption axis of said polarization plate is 5 to 35 degrees, the angle of the optical axis of said half phase difference film is −15 to 15 degrees, and the angle of the optical axis of said quarter phase difference film is −75 to −45 degrees.
Dependencies are inferred from the claim text.