Method for producing cholesteric liquid crystal display, cholesteric liquid crystal display, and liquid crystal aligning agent

A liquid crystal display and liquid crystal alignment agent technology, applied in the manufacture of cholesteric liquid crystal displays, cholesteric liquid crystal displays and liquid crystal alignment agents, can solve the problem that the uniformity of liquid crystal alignment cannot be called sufficient, and the ability of liquid crystal alignment has uniformity Low-level problems, to achieve the effect of promoting the improvement of productivity, improving the uniformity of orientation, and promoting the reduction of manufacturing costs

Active Publication Date: 2016-02-10
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the liquid crystal aligning ability of this liquid crystal aligning film has the situation that the uniformity is low, and the orientation uniformity of the liquid crystal connected with this liquid crystal aligning film cannot be said to be sufficient.
Therefore, there is still room for improvement in display performance such as resolution of the above-mentioned cholesteric liquid crystal display.

Method used

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  • Method for producing cholesteric liquid crystal display, cholesteric liquid crystal display, and liquid crystal aligning agent
  • Method for producing cholesteric liquid crystal display, cholesteric liquid crystal display, and liquid crystal aligning agent
  • Method for producing cholesteric liquid crystal display, cholesteric liquid crystal display, and liquid crystal aligning agent

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Embodiment

[0339] Hereinafter, the present invention will be described more specifically by way of examples, but the present invention is not limited to these examples. In addition, the necessary amounts of raw material compounds and polymers used in the following examples were ensured by repeating the synthesis of raw material compounds and polymers in the synthesis scheme shown in the following synthesis examples as needed.

[0340]

Synthetic example 1

[0342] In a reaction vessel with a stirrer, a thermometer, a dropping funnel and a reflux condenser, add 100.0 g of 2-(3,4-epoxycyclohexyl) ethyltrimethoxysilane (ECETS), 500 g of methyl iso Butanone and 10.0 g of triethylamine were mixed at room temperature. Next, 100 g of deionized water was dropped from the dropping funnel over 30 minutes, mixed under reflux, and reacted at 80° C. for 6 hours. After the reaction is over, take out the organic layer, use 0.2% by mass of ammonium nitrate aqueous solution to wash it until the water after washing is neutral, then distill off the solvent and water under reduced pressure to obtain a viscous transparent liquid with epoxy groups polyorganosiloxane.

[0343] The polyorganosiloxane with epoxy group is carried out 1 As a result of H-NMR analysis, an epoxy group-based peak with the same theoretical intensity was obtained around chemical shift (δ) = 3.2 ppm, thereby confirming that no side reaction of epoxy group occurred during the re...

Synthetic example 2

[0347] In a 300 mL three-necked flask with a condenser, mix 6.5 g of 4-fluorophenylboronic acid, 10 g of 4-bromocinnamic acid, 2.7 g of tetrakis(triphenylphosphine) palladium, 4 g of sodium carbonate, 80 mL of tetrahydrofuran and 39 mL of pure water . The reaction solution was continued to be heated and stirred at 80° C. for 8 hours, and the completion of the reaction was confirmed by TLC. After cooling the reaction solution to room temperature, it was poured into 200 mL of 1N-hydrochloric acid aqueous solution, and the precipitated solid was filtered. The obtained solid was dissolved in ethyl acetate, and liquid separation washing was performed in this order with 100 mL of 1N-hydrochloric acid aqueous solution, 100 mL of pure water, and 100 mL of saturated brine. Next, the organic layer was dried over anhydrous magnesium sulfate, and the solvent was distilled off. The obtained solid was vacuum-dried to obtain 9 g of a compound represented by the following formula (K-1) (spe...

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Abstract

The invention relates to a cholesteric liquid crystal display manufacturing method, a cholesteric liquid crystal display (LCD) and a liquid crystal aligning agent for forming liquid crystal aligning films. The cholesteric LCD has the liquid crystal aligning films with excellent liquid crystal aligning ability, and therefore achieves high liquid crystal aligning uniformity. The cholesteric LCD of the invention comprises a pair of opposite substrates; cholesteric liquid crystals which are configured in multiple separated regions between the substrates in a direction perpendicular to each substrate; and liquid crystal aligning films which are laminated between the substrates and the cholesteric liquid crystals respectively. The cholesteric LCD is characterized in that at least the liquid crystal aligning films at one side are formed by radiation-sensitive liquid crystal aligning agents.

Description

technical field [0001] The invention relates to a manufacturing method of a cholesteric liquid crystal display, a cholesteric liquid crystal display and a liquid crystal alignment agent. Background technique [0002] A cholesteric liquid crystal display using a cholesteric liquid crystal (chiral nematic liquid crystal) with a predetermined chiral agent added to the base liquid crystal can be used without Clear color display with color filter or polarizing plate. In addition, a cholesteric liquid crystal display has the property (memory) that once a voltage is applied for writing, it can retain the state at the time of writing even when the electric field is cut off (memory), so even without using active elements that are expensive to manufacture, it can Make a good quality display. Furthermore, according to the cholesteric liquid crystal display, by using this memory property, the electric field for driving the liquid crystal can be cut off beforehand when the display sign...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1337G02F1/1333G02F1/137C09K19/56
CPCG02F1/133365G02F1/1337G02F1/133723G02F1/13718G02F2203/09
Inventor 德久博昭西川通则
Owner JSR CORPORATIOON
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