Method for manufacturing optical elements

A technology of optical components and manufacturing methods, applied in optics, polarizing components, nonlinear optics, etc., capable of solving problems such as irregular peeling

Inactive Publication Date: 2004-06-02
NIPPON PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the influence of the surface accuracy or friction of the nip roller, when the alignment substrate film is released from clamping, due to the influence of fine wrinkles of the film, irregular peeling will occur.

Method used

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  • Method for manufacturing optical elements
  • Method for manufacturing optical elements
  • Method for manufacturing optical elements

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0039] Hereinafter, the present invention will be specifically described based on examples, but the present invention is not limited by these examples.

[0040] Various analytical methods used in Reference Examples and Examples are as follows.

[0041] (1) Determination of optical parameters

[0042] The optical parameters of the twist angle and retardation (Δn·d) of the liquid crystal film were measured by polarized light analysis method. (Δn: birefringence constant, d: thickness of the liquid crystal layer of the liquid crystal film; unit nm)

[0043] (2) Determination of logarithmic viscosity

[0044] The measurement was carried out in a phenol / tetrachloroethane (60 / 40 weight ratio) mixed solvent at 30° C. using an Ubbelode viscometer.

[0045] (3) Determination of liquid crystal polymer composition

[0046] Dissolve the liquid crystalline polyester in deuterated chloroform, using a 400MHz 1 H-NMR (JNM-GX400 manufactured by JEOL Ltd.) was measured to determine the comp...

reference example 1

[0048] Synthesize the liquid crystal polymer substance (logarithmic viscosity=0.22dl / g, Tg=61 ℃) of formula (1) and (R)-3-methylhexane-1,6-bis containing formula (2) Optically active liquid crystal polymer substance (logarithmic viscosity=0.17dl / g) of alcohol unit.

[0049] The synthesis of these polymer materials is carried out by reacting acid chlorides corresponding to dicarboxylic acid units with diol compounds in the presence of triethylamine in o-dichlorobenzene solvent.

[0050] The liquid crystalline polymer solution-1 was prepared by dissolving 18.1 g of the obtained liquid crystalline polymer of formula (1) and 1.9 g of the liquid crystalline polymer mixture of formula (2) in 80 g of N-methylpyrrolidone.

[0051] Formula 1)

[0052]

[0053] Formula (2)

[0054]

[0055] * Optically active carbon

reference example 2

[0057] Using 80mmol terephthalic acid, 23mmol pimelic acid, 55mmol hydroquinone diacetate, 50mmol isopropyl catechol diacetate and sodium acetate as a catalyst, polymerized at 280°C for 2 hours under nitrogen atmosphere, Polymerization was carried out at 300° C. for 2 hours to obtain a liquid crystalline polymer substance of formula (3).

[0058] Then, the obtained liquid crystal polymer substance was dissolved in tetrachloroethane, and then reprecipitated with methanol to obtain 26 g of a purified liquid crystal polymer substance. The logarithmic viscosity of this liquid crystal polymer substance is 0.31dl / g. As a result of DSC measurement and polarizing microscope observation, the liquid crystal phase is a nematic phase, and the low temperature portion lower than the liquid crystal phase is a glass phase without a crystal phase. , Tg is 117°C.

[0059] 15 g of this liquid crystal polymer substance was dissolved in 85 g of tetrachloroethane to prepare a liquid crystal phase ...

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Abstract

Provided is a separation method, without causing generation of defects, such as transfer residues of liquid crystal high polymer, cracks or the separation and wrinkles or the like of a film, in a method for manufacturing of optical elements by transferring a liquid crystal polymer layer formed on an orientation substrate film from a long laminated film to a transmissive substrate film. An optical element is manufactured which has the liquid crystal polymer layer transferred to the transmissive substrate film by separating the oriented substrate film along a separation bar provided on the side of the oriented substrate film from the long laminated layer film, comprising the orientation substrate film/the liquid crystal polymer layer/a curing adhesive layer/the transmissive substrate film.

Description

technical field [0001] The invention relates to a color compensation plate for liquid crystal display elements, a viewing angle improving plate for liquid crystal display elements, an optical phase difference plate, a luminance-improving plate, an anti-reflection plate, a color polarizing plate, a 1 / 2 wavelength plate, a 1 / 4 wavelength plate, and an optical rotation plate. Optical element manufacturing methods such as optical elements. Background technique [0002] Optical elements made of liquid crystal polymers, especially liquid crystal polymers with a fixed liquid crystal orientation structure, are used in various optical applications of displays, such as color compensation plates for liquid crystal display elements or viewing angle improving plates for liquid crystal display elements. Showing epoch-making performance, and making the display high-performance, lightweight and thin. As a method of manufacturing this optical element, a method of transferring a layer formed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30G02F1/1335G02F1/1337
Inventor 平井知生市塚敏博
Owner NIPPON PETROCHEMICAL CO LTD
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