Liquid-crystal display device

A process for producing a liquid-crystal display device comprising a front-side polarizing element, a rear-side polarizing element, a liquid-crystal cell disposed between the front-side polarizing element and the rear-side polarizing element, a front-side retardation region composed of one or more retardation layers disposed between the liquid-crystal cell and the front-side polarizing element, and a rear-side retardation region composed of one or more retardation layers disposed between the liquid-crystal cell and the rear-side polarizing element;

• the method comprising:
• a first step of preparing a liquid-crystal cell which 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, and in which the scattering intensity of the front-side substrate and all the members formed on the substrate (hereinafter this is referred to as “the front-member scattering intensity”) satisfies the following formula (0):
• The front-member scattering intensity 1/38000;
• (0)
• a second step of comparing the front-member scattering intensity of the liquid-crystal cell prepared in the first step with the scattering intensity of the rear-side substrate and all the parts formed on the rear-side substrate (hereinafter this is referred to as “the rear-member scattering intensity”);
• a third step of determining retardation Rth0(λ) along the thickness-direction at a wavelength λ, necessary for compensation of Δnd(λ) in the black state of the liquid-crystal cell prepared in the first step (wherein d means the thickness of the liquid-crystal layer (nm), Δn(λ) means the refractivity anisotropy at a visible light wavelength λ nm of the liquid-crystal layer, and Δnd(λ) means the product of Δn(λ) and d);
• and
• a forth step of, on the basis of the magnitude relation between the rear-member scattering intensity and the front-member scattering intensity obtained in the second step, distributing the value of Rth0(λ), necessary for viewing angle compensation in the black state of the liquid-crystal cell, into retardation along the thickness-direction at a wavelength λ of the front-side retardation region and into the rear-side retardation region, Rthfront(λ) and Rthrear(λ), respectively;
• wherein the front-member scattering intensity and the rear-member scattering intensity each are the difference between the reciprocal of the contrast ratio of 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 member CR(rear 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, “the member CR(front 1)” and “the member CR(rear 1)”, respectively;
• and these are computed according to the following formulae, respectively:
• The front-member scattering intensity={1/The member CR(front 2)}−{1/The member CR(front 1)},
• The rear-member scattering intensity={1/The member CR(rear 2)}−{1/The member CR(rear 1)}.