Patent ID: 7522240
Filing Date: 2009-04-21
Classification: G02F

Abstract:
1. 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 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: 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.