Liquid crystal panel, liquid crystal television, and liquid crystal display device

A liquid crystal panel and liquid crystal technology, applied in optics, instruments, nonlinear optics, etc., can solve the problems of reduced oblique contrast of the display device, and the display characteristics of the liquid crystal display device cannot meet the needs of large fixed TVs, etc., to reduce oblique light leakage, The effect of reducing oblique coloring and increasing oblique contrast

Inactive Publication Date: 2007-04-25
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the oblique contrast ratio of the liquid crystal display device according to this technology is significantly lowered
As a result, the display characteristics of the liquid crystal display devices thus obtained cannot meet the needs of large stationary televisions

Method used

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  • Liquid crystal panel, liquid crystal television, and liquid crystal display device
  • Liquid crystal panel, liquid crystal television, and liquid crystal display device
  • Liquid crystal panel, liquid crystal television, and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0377]

[0378] The retardation film C-2 obtained in Reference Example 9 (that is, the anode C plate) was adhered to the configuration obtained in Reference Example 12 through an adhesive layer formed of an acrylic pressure-sensitive adhesive having a thickness of 20 μm The viewing-side surface of the liquid crystal cell having a uniformly aligned liquid crystal layer had the slow axis of the retardation film C-2 substantially parallel to the long side of the liquid crystal cell (ie, 0° ± 0.5°). Then, the retardation film B-2 obtained in Reference Example 5 (that is, the first anode A plate) was adhered to the retardation film C through an adhesive layer formed of an acrylic pressure-sensitive adhesive having a thickness of 20 μm. -2 on the surface so that the slow axis of the retardation film B-2 is substantially perpendicular to the long side of the liquid crystal cell (ie, 90°±0.5°). Subsequently, the retardation film A-2 obtained in Reference Example 2 (that is, the firs...

Embodiment 2

[0382] Manufacture liquid crystal panel (ii) and liquid crystal display device (ii) according to the same manner of embodiment 1, except: retardation film C-3 is used as anode C plate; Retardation film B-1 is used as the first anode A plate; The difference film A-3 was used as the first cathode C-plate; and the retardation film A-3 was used as the second cathode C-plate. Table 4 shows the characteristics of the liquid crystal display device (ii).

Embodiment 3

[0384] Manufacture liquid crystal panel (iii) and liquid crystal display device (iii) according to the same manner of embodiment 1, except: retardation film C-1 is used as anode C plate; Retardation film B-3 is used as the first anode A plate; The difference film A-1 was used as the first cathode C plate; and the retardation film A-1 was used as the second cathode C plate. Table 4 shows the characteristics of the liquid crystal display device (iii).

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Abstract

There are provided a liquid crystal panel, a liquid crystal television, and a liquid crystal display device capable of reducing the light leak and slight coloring in black display of the liquid crystal device and having a high contrast ratio in an oblique direction and a small color shift amount in the oblique direction. The liquid crystal panel includes a liquid crystal cell having a liquid crystal layer containing nematic liquid crystal subjected to the homogenous orientation under no electric field, a first polarizer orientated to the visual side of the liquid crystal cell, a first layered optical element orientated between the liquid crystal cell and the first polarizer, a second polarizer arranged at the backlight side of the liquid crystal cell, and a second layered optical element arranged between the liquid crystal cell and the second polarizer.

Description

technical field [0001] The present invention relates to a liquid crystal panel, a liquid crystal television, and a liquid crystal display device each having improved display characteristics by adding a laminated optical element. Background technique [0002] Liquid crystal display devices attract attention due to their characteristics such as thinness, lightness, and low power consumption, and are widely used in: portable equipment such as mobile phones and watches; office automation (OA) equipment such as personal computer monitors and laptop personal computers; computers; and home appliances such as video cameras and LCD TVs. Due to technological innovation, the defects that the display characteristics of the liquid crystal display device change with the viewing angle of the screen and the liquid crystal display device cannot work at high temperature and extremely low temperature have been overcome, so that the liquid crystal display device is widely used. However, a wide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13363G02F1/1335G02B5/30
CPCG02F2001/133567G02F2413/13G02F2413/04G02F2001/133562G02F1/13363G02F2413/11G02B5/3016G02F1/133567G02F1/133562G02F1/133634G02B5/30G02F1/1335
Inventor 与田健治矢野周治林政毅
Owner NITTO DENKO CORP
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