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Liquid crystal panel and liquid crystal display apparatus

A liquid crystal panel, liquid crystal cell technology, applied in nonlinear optics, instruments, optics, etc.

Inactive Publication Date: 2007-11-28
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional liquid crystal display devices hardly produce a colorless neutral display in all azimuthal directions

Method used

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  • Liquid crystal panel and liquid crystal display apparatus
  • Liquid crystal panel and liquid crystal display apparatus
  • Liquid crystal panel and liquid crystal display apparatus

Examples

Experimental program
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Effect test

preparation example Construction

[0152] Next, a method of forming a second birefringent layer by coating using the above-mentioned non-liquid crystal polymer is described. The method of forming the second birefringent layer may use any appropriate method provided that the second birefringent layer having the optical properties as described above can be obtained. A typical preparation method includes a step of applying a solution of a non-liquid crystal polymer to a substrate film and a step of forming the non-liquid crystal polymer by removing the solvent in the solution. The non-liquid crystal polymer layer can be formed by coating directly onto the polarizer (typically, the protective layer of the polarizer) (i.e., the protective layer of the polarizer can also function as a substrate film), or the non- The liquid crystal polymer layer is formed on any suitable substrate, which is then transferred onto the polarizer (typically, the protective layer of the polarizer). Methods involving transfer may further ...

reference example 1

[0173] (Reference Example 1): Preparation of polarizer (may be referred to as first polarizer or second polarizer)

[0174] A polyvinyl alcohol film was colored in an iodine-containing aqueous solution, and in a boric-acid-containing aqueous solution, the resultant was uniaxially stretched to six times as long between rollers with different speed ratios, thereby producing a polarizer.

reference example 2

[0175] (Reference Example 2): Preparation of polyvinyl alcohol-based adhesive

[0176] Under the temperature condition of 30° C., with respect to 100 parts by weight of polyvinyl alcohol-based resin having an acetoacetyl group (trade name: “GOHSEFIMER Z200”, purchased from Nippon Synthetic Chemical Industry Co., Ltd., average degree of polymerization: 1,200, Degree of saponification: 98.5 mol %; degree of acetoacetylation: 5 mol %), 50 parts by weight of methylolmelamine was dissolved in pure water, thereby preparing an aqueous solution adjusted to a solid content of 3.7%. To 100 parts by weight of this aqueous solution, 18 parts by weight of an aqueous alumina colloid solution (average particle size: 15 nm, solid content: 10%, positive charge) was added, thereby preparing an aqueous binder solution. The viscosity of the aqueous binder solution was 9.6 mPa·s. The pH of the aqueous binder solution is 4 to 4.5.

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Abstract

To provide a liquid crystal panel suitable for a liquid crystal display apparatus and capable of providing colorless neutral displays in all directions, and a liquid crystal display apparatus using the liquid crystal panel, the liquid crystal panel of the present invention includes: a liquid crystal cell; a first polarizer arranged on one side of the liquid crystal cell; a first birefringent layer arranged between the liquid crystal cell and the first polarizer; a second polarizer arranged on another side of the liquid crystal cell; and a second birefringent layer arranged between the liquid crystal cell and the second polarizer; in which: the first birefringent layer has a relationship of 1nz.

Description

[0001] Pursuant to 35 U.S.C. Chapter 119, this application claims the benefit of Japanese Patent Application No. 2006-144382 filed on May 24, 2006 and Japanese Patent Application No. 2007-034343 filed on February 15, 2007, both of which The patent application documents are hereby incorporated by reference. technical field [0002] The invention relates to a liquid crystal panel and a liquid crystal display device. Specifically, the present invention relates to a liquid crystal panel suitable for use in a liquid crystal display device and capable of providing a colorless neutral display in various directions, and to a liquid crystal display device using the liquid crystal panel. Background technique [0003] FIG. 5A is a schematic cross-sectional view of a typical conventional liquid crystal display device, and FIG. 5B is a schematic cross-sectional view of a liquid crystal cell used in the liquid crystal display device. The liquid crystal display device 900 is provided with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13363G02F1/1335
Inventor 喜多川丈治武田健太郎吉见裕之村上奈穗
Owner NITTO DENKO CORP
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