Polarizing plate with optical compensation layer, liquid crystal panel using polarizing plate with optical compensation layer, liquid crystal display unit, and image display unit

Abstract

A polarizing plate with an optical compensation layer capable of contributing to its thinning, realizing high contrast with viewing angle characteristics improved, preventing interference non-uniformity and thermal non-uniformity, being limited in color shift, delivering a good color reproducing feature, and favorably preventing light leakage at black displaying; and a liquid crystal panel, a liquid crystal display unit and an image display unit using such a polarizing plate with an optical compensation layer. The polarizing plate with an optical compensation layer comprises a polarizer, a first optical compensation layer, an adhesive layer, and a second optical compensation layer sequentially in the order mentioned, wherein the first optical compensation layer has a refractive index distribution, nx>ny=nz, with its in-plane phase difference Re1 exhibiting wavelength dispersion characteristics that gradually decrease toward a short-wavelength side and with its in-plane phase difference Re1 being 90-160 nm, and the second optical compensation layer is a coating layer, has a refractive index distribution, nx=ny>nz, with its in-phase difference Re2 being 0-20 nm, its phase difference Rth2 in thickness direction being 30-300 nm and its thickness being 0.5-10 [mu]m.

Description

Polarizer with optical compensation layer, liquid crystal panel using polarizer with optical compensation layer, liquid crystal display device, and image display device technical field The invention relates to a polarizer with an optical compensation layer, a liquid crystal panel using the polarizer with an optical compensation layer, a liquid crystal display device and an image display device. More specifically, the present invention relates to a polarizer with an optical compensation layer that contributes to thinning, prevents thermal unevenness, and can well prevent light leakage during black display, and a polarizer using the above-mentioned optical compensation layer. Mirror liquid crystal panels, liquid crystal display devices, and image display devices. Background technique As a VA-mode liquid crystal display device, in addition to a transmissive liquid crystal display device and a reflective liquid crystal display device, a transflective liquid crystal display dev...

AI Technical Summary

Problems solved by technology

However, in the above-mentioned laminated retardation layer, the liquid crystal monomer is dissolved in an organic solvent and directly coated on the retardation film, so the organic solvent corrodes the retardation film, and as a result, the retardation film is damaged and the retardation film is damaged. The problem that the film becomes cloudy

In addition, since the coating layer of the liquid crystal is directly coated on the retardation film, the coating layer of the liquid crystal is easily peeled off from the retardation film, resulting in the problem that it is not practical (for example, high temperature and high humidity, etc.).

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