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Cured film, alignment material, and retardation material

A technology of cured film and photo-alignment, applied in the field of retardation materials, can solve the problems such as the reduction of liquid crystal alignment, and achieve the effects of excellent alignment uniformity, high efficiency and excellent alignment sensitivity

Active Publication Date: 2021-02-19
NISSAN CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the alignment layer is exposed to solvents, it is possible that the liquid crystal alignment can be significantly reduced

Method used

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  • Cured film, alignment material, and retardation material
  • Cured film, alignment material, and retardation material
  • Cured film, alignment material, and retardation material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0169] 0.047 g of MCA as component (A), 0.065 g of APEPO-1 (RDK-133 manufactured by Kawasaki Chemical Industry Co., Ltd.) as component (B), and the polymer obtained in the polymerization example as component (C) (PC-1) 0.248g and 0.012g of PTSA which are (D)components were mixed, PM0.764g and BA0.984g were added as a solvent, and it was visually confirmed that it melt|dissolved, and the solution was obtained. Next, a liquid crystal aligning agent (A-1) was prepared by filtering the obtained solution through a filter with a pore size of 0.2 μm. In addition, here, a liquid crystal aligning agent and the composition for cured film formation have the same meaning.

Embodiment 2～ Embodiment 4

[0171] Except having used each component of the kind and compounding quantity shown in following Table 1, it carried out similarly to Example 1, and prepared each liquid crystal aligning agent (A-2) - (A-4).

[0172] APEPO-2: RFK-505 (manufactured by Kawasaki Chemical Industry Co., Ltd.)

[0173] APEPO-3: RFK-509 (manufactured by Kawasaki Chemical Industry Co., Ltd.)

[0174] APEPO-4: RMK-342 (manufactured by Kawasaki Chemical Industry Co., Ltd.)

Embodiment 5

[0183] Add 1.463g of LC-242 (manufactured by BASF Corporation) as a polymerizable liquid crystal for horizontal alignment, 0.029g of Irgacure907 (manufactured by BASF Corporation) as a photoradical initiator, and 0.075g of BYK-361N as a leveling material, and further add as 2.776 g of N-methylpyrrolidone as a solvent was stirred for 2 hours, and it was confirmed visually that it was dissolved, and a 30% by mass polymerizable liquid crystal solution LC-1 was obtained.

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Abstract

[Problem] To provide: a cured film which has resistance to various solvents for liquid crystals and can have satisfactory alignment properties and which has excellent transparency even when having a large thickness of 3 microns or above and has resistance to good solvents; an alignment material for photoalignment; and a retardation material formed using the alignment material. [Solution] A cured film which is a dried and burned film formed from a coating film of a cured-film-forming composition characterized by comprising (A) a compound having a photoalignment group and any one substituent selected from among a hydroxyl group, a carboxyl group, and an amino group, (B) a polyester polyol having an aromatic ring, and (C) a crosslinking agent, the cured film having a thickness of 3-20 micronsand having the photoalignment groups; an alignment material; and a retardation material.

Description

technical field [0001] The present invention relates to a cured film for forming an orientation material for aligning liquid crystal molecules, an orientation material, and a phase difference material. In particular, the present invention relates to curing useful for a patterned retardation material used in the production of circularly polarized glasses-type 3D displays, and a retardation material used in circularly polarized plates used as antireflection films in organic EL displays. film, orientation material and phase difference material. Background technique [0002] In the case of a circularly polarized glasses-type 3D display, a phase difference material is usually disposed on a display element such as a liquid crystal panel that forms an image. In this phase difference material, a plurality of two types of phase difference regions having different phase difference characteristics are arranged regularly, and a patterned phase difference material is formed. In additio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30H01L27/32H01L51/50H05B33/02G02F1/13363
CPCG02B5/30H05B33/02G02F1/13363H10K59/8793G02B5/3083G02B5/3016G02B1/08C09K19/56
Inventor 西村直也伊藤润
Owner NISSAN CHEM IND LTD
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