Patent ID: 7522240

Claim:
A liquid crystal display comprising: a first substrate glass; a second substrate glass; a liquid crystal layer between the first substrate glass and the second substrate glass; a first polarizer placed on an outer side of the first substrate glass, the outer side being opposite to a liquid crystal layer; a first quarter wavelength retardation plate arranged between the first substrate glass and the first polarizer, the first quarter wavelength retardation plate comprising: a first half wavelength retardation film, being adjacent to the first polarizer, of a predetermined wavelength, wherein a slow axis thereof makes a specific angle of Θ1 with a transmissive axis of the first polarizer; and a first quarter wavelength retardation film adjacent to the first substrate glass wherein a slow axis thereof makes a specific angle of Θ2 with the transmissive axis of the first polarizer in accordance with relation equation of Θ2=2×Θ1±45 degrees; a second polarizer placed on an outer side of the second substrate glass, the outer side being opposite to the liquid crystal layer; and a second quarter wavelength retardation plate arranged between the second substrate glass and the second polarizer, the second quarter wavelength retardation plate comprising: a second half wavelength retardation film, being adjacent to the second polarizer, of the predetermined wavelength, wherein a slow axis thereof makes a specific angle of Θ4 with a transmissive axis of the second polarizer; and a second quarter wavelength retardation film adjacent to the second substrate glass, wherein a slow axis thereof makes a specific angle of Θ3 with the transmissive axis of the second polarizer in accordance with the relation equation of Θ3=2×Θ4±45 degrees, wherein a display region of the liquid crystal display is divided into a reflective region and a transmissive region, wherein in the reflective region, the effective light path difference Δnd of the liquid crystal layer is equal to a quarter of the predetermined wavelength and a reflector is placed on the inner side of the second substrate glass, wherein in the transmissive region, the effective light path difference Δnd of the liquid crystal layer is equal to a half of the predetermined wavelength, and wherein the relation equations Θ2=(2×Θ1)±45 and Θ3=(2×Θ4)±45 obtain for the reflective region and the transmissive region.