Lc panel and LCD device

Abstract

The present invention provides a liquid crystal panel having improved oblique contrast and good display uniformity without shifting or unevenness in retardation values ​​due to shrinkage stress of a polarizer or heat of a backlight. A liquid crystal panel according to an embodiment of the present invention includes a liquid crystal unit, polarizers arranged on both sides of the liquid crystal unit, a first optical element arranged between one polarizer and the liquid crystal unit, and a first optical element arranged between the other polarizer and the liquid crystal unit. The second optical element, wherein the first optical element includes a retardation film containing a styrene-based resin and a polycarbonate-based resin and satisfies the following expressions (1) and (2), and the second optical element substantially has an optical isotropy Same sex: 240nm≤Re[590]≤350nm...(1)0.20≤Rth[590] / Re[590]≤0.80...(2).

Description

Technical field

[0001] The invention relates to a liquid crystal panel having a liquid crystal cell, a polarizer and an optical element. In addition, the present invention relates to a liquid crystal television and a liquid crystal display device that both use the liquid crystal panel. Background technique

[0002] A liquid crystal display device equipped with an in-plane switching (IPS) mode liquid crystal cell includes rotation of the liquid crystal molecules by approximately 45° by applying a horizontal electric field to liquid crystal molecules that are substantially horizontally aligned without applying an electric field, thereby increasing the light transmittance ( White display) and light shielding (black display) are controlled. The problem with the conventional liquid crystal display device equipped with an IPS mode liquid crystal cell is that the contrast of the screen viewed from an oblique direction (azimuth angle of 45°, 135°, 225° or 315°) at an angle of 45° to the ...

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