Patent ID: 8681295
Filing Date: 2014-03-25
Classification: G02B,G02F

Abstract:
1. A VA-mode liquid-crystal display device comprising: a front-side polarizing element, a rear-side polarizing element, a VA-mode liquid-crystal cell disposed between the front-side polarizing element and the rear-side polarizing element, and a rear-side retardation region composed of one or more retardation layers disposed between the rear-side polarizing element and the VA-mode liquid-crystal cell, wherein: the liquid-crystal cell comprises a liquid-crystal layer, and a pair of a front-side substrate and a rear-side substrate to hold the liquid-crystal layer therebetween; the ratio of the member contrast ratio of the front-side substrate (the member CR(front)) to the member contrast ratio of the rear-side substrate (the member CR(rear)), (the member CR(front)/the member CR(rear)) satisfies following formula (1): the total scattering intensity of the front-side substrate and all the members formed on the front-side substrate (hereinafter this is referred to as “the front-member scattering intensity”) satisfies the following formula (2): wherein the front-member scattering intensity is the difference between the reciprocal of the contrast ratio of all the substrate and all the members formed on the substrate, as measured by the use of a polarizing plate 2 of a combination of a high-retardation film and a polarizing element (the member CR(front 2 )), and the reciprocal of the contrast ratio thereof, as measured by the use of a polarizing plate 1 of a combination of a low-retardation film and a polarizing element (member CR(front 1 )), and this is computed according to the following formula: the rear-side retardation region satisfies the following formula (3): wherein Rth(λ) means retardation along the thickness-direction (nm) at a wavelength λ nm.