JPS6037155B2 - liquid crystal composition - Google Patents
liquid crystal compositionInfo
- Publication number
- JPS6037155B2 JPS6037155B2 JP8323776A JP8323776A JPS6037155B2 JP S6037155 B2 JPS6037155 B2 JP S6037155B2 JP 8323776 A JP8323776 A JP 8323776A JP 8323776 A JP8323776 A JP 8323776A JP S6037155 B2 JPS6037155 B2 JP S6037155B2
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- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal composition
- conductivity
- additive
- present
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Description
【発明の詳細な説明】 本発明は液晶組成物に関するものである。[Detailed description of the invention] The present invention relates to a liquid crystal composition.
動的散乱モードを利用した液晶表示装置の液晶組成物と
しては従来４級アンモニウム塩を添加剤として含有した
液晶組成物が多く用いられている。Conventionally, liquid crystal compositions containing quaternary ammonium salts as additives have often been used as liquid crystal compositions for liquid crystal display devices utilizing dynamic scattering mode.
しかしこのような液晶組成物は導電率の温度依存性が大
きいという欠点を有している。従って液晶組成物の使用
温度範囲を低温側に拡げようとすると常温での導電率が
必要以上に大きくなり、その結果消費電力が増大すると
いう欠点を有している。本発明は上記の点に鑑みてなさ
れたものであり、導電率の温度依存性の４・さい液晶組
成物を得ることを目的としてなされたものである。However, such liquid crystal compositions have the disadvantage that their conductivity is highly dependent on temperature. Therefore, if an attempt is made to extend the operating temperature range of the liquid crystal composition to a lower temperature side, the electrical conductivity at room temperature becomes higher than necessary, resulting in a disadvantage that power consumption increases. The present invention has been made in view of the above points, and has been made for the purpose of obtaining a liquid crystal composition having a temperature dependence of electrical conductivity of 4 cm.
本発明者等は上記の目的に沿って鋭意研究を進めた結果
下記の一般式で示されるィミン化合物の塩を添加剤とし
て添加した液晶組成物は、従来の液晶組成物に比較して
導電率の温度依存性が非常に小さくなることを見し、出
した。As a result of intensive research carried out by the present inventors in accordance with the above objectives, a liquid crystal composition containing a salt of an imine compound represented by the general formula below as an additive has a higher electrical conductivity than conventional liquid crystal compositions. It was found that the temperature dependence of
即ちこのィミン化合物の塩を添加剤として使用すること
により、導電率の温度依存性の非常に小さい液晶組成物
を提供できることを見し、出した。ィミン化合物の塩（
以下ィンモニウム塩という。That is, they found that by using the salt of this imine compound as an additive, it is possible to provide a liquid crystal composition in which the temperature dependence of conductivity is extremely small. Salts of imine compounds (
Hereinafter referred to as immonium salt.
）の一般式（但しＲ，Ｒは電子供与性基、Ｘｅは陰イオ
ン性基である。) (where R and R are electron-donating groups, and Xe is an anionic group.
）従って、この液晶組成物を用いて液晶表示装置を構成
した場合、使用温度領域を低温側に拡げても常温での導
電率は必要以上に大きくなりすぎることはなく、消費電
力の低減をはかることができる。) Therefore, when a liquid crystal display device is constructed using this liquid crystal composition, even if the operating temperature range is expanded to the lower temperature side, the electrical conductivity at room temperature will not increase more than necessary, and power consumption will be reduced. be able to.
以下実施例に基づいて本発明を詳細に説明する。The present invention will be described in detail below based on Examples.
対向電極間が２叫ｍの透過型液晶セルを作製する。A transmissive liquid crystal cell with a distance of 2 meters between opposing electrodes is fabricated.
一方、例えば
Ａ メルクジヤパン■製 ェステル混合液晶な１一般９
又は
８チッッ■製 アゾキシ混合液晶 ＳＸ−１の混合液晶
を準備する。On the other hand, for example, a mixed liquid crystal such as Estel mixed liquid crystal (manufactured by A. Merck Japan) and azoxy mixed liquid crystal (SX-1) manufactured by General 9 or 8 Chip (2) is prepared.
そして、上記の一つの混合液晶中へ本発明に係る種々の
添力ロ斉眼０ち、ｌ ｐ−メトキシベンジリデン−ｐ−
ｎブチルベンゼンインモニウム３．５ージニトロベンゼ
ンスルホネート（構造式）２ ｐ−エトキシベンジリデ
ン一ｐ−ｎーブチルベンゼンインモニウム３．５ージニ
トロベンゼンスルホネート、３ ｐ−ｎ一ブトキシベン
ジリデン−ｐ−ｎ−フチルベンゼンインモニウム３．５
ージニトロベンゼンスルホネート、４ ｐ−メトキシベ
ンジリデン−ｐ−ｎ−ブチルベンゼンインモニウム３．
５−ジニトｏベンゾヱイト、５ ｐ−エトキシベンジリ
デン−ｐ−ｎ−ブチルベンゼンインモニウム３．５−ジ
ニトロベンゾエィト（構造式）６ ｐ−ｎ−ブトキシベ
ンジリデン一ｐ−ｎ−フチルベンゼンインモニウム３．
５−ジニトロベンゾエイト、７ ｐ−メトキシベンジリ
デン−ｐ−ｎ−プチルベンゼンインモニウム２．４．６
−トリニトロベンゾエイト、８ ｐ一エトキシベンジリ
デン−ｐ−ｎ−ブチルベンゼンインモニウム２．４．６
ートリニトｏベンゾエイト、９ ｐ−ｎ−ブトキシベン
ジリデン−ｐ−ｎ−フチルベンゼンインモニウム２．４
．６ートリニトロベンゾェィト（構造式）の何れかの添
加物を添加して液晶組成物を作製する。Then, various additives according to the present invention are added into the above-mentioned one mixed liquid crystal.
n-butylbenzeneimmonium 3.5-dinitrobenzenesulfonate (structural formula) 2 p-ethoxybenzylidene-p-n-butylbenzeneimmonium 3.5-dinitrobenzenesulfonate, 3 p-n-butoxybenzylidene-p-n- Phthylbenzene immonium 3.5
-dinitrobenzene sulfonate, 4 p-methoxybenzylidene-p-n-butylbenzene immonium3.
5-dinitrobenzoite, 5 p-ethoxybenzylidene-p-n-butylbenzenimmonium 3.5-dinitrobenzoate (structural formula) 6 p-n-butoxybenzylidene-p-n-phthylbenzenimmonium 3.
5-Dinitrobenzoate, 7 p-methoxybenzylidene-p-n-butylbenzenimmonium 2.4.6
-trinitrobenzoate, 8 p-ethoxybenzylidene-pn-butylbenzenimmonium 2.4.6
-trinitobenzoate, 9 p-n-butoxybenzylidene-p-n-phthylbenzenimmonium 2.4
．． A liquid crystal composition is prepared by adding any additive of 6-trinitrobenzoate (structural formula).
上記液晶組成物を上記透過型液晶セルに充填し、しきい
値電圧（６０日２のｓｊａ波印加時に於いて動的散乱を
生ずる最低の電圧（実効値））、電流密度（実効電圧値
２５Ｖ，６０ＨＺのｓｉｎ波印加時の電流密度、測定温
度２５００）、電流密度の温度依存性（実効電圧値２５
Ｖ，６０ＨＺｓ岬皮印加時の電流密度温度依存性）に関
して下記第一表に示す結果を得た。The above-mentioned liquid crystal composition was filled into the above-mentioned transmission type liquid crystal cell, and the threshold voltage (the lowest voltage (effective value) that causes dynamic scattering when applying SJA waves for 60 days 2), current density (effective voltage value 25 V), , current density when applying a 60Hz sine wave, measurement temperature 2500), temperature dependence of current density (effective voltage value 25
The results shown in Table 1 below were obtained regarding the current density (temperature dependence upon application of V, 60 Hz).
第１表は添加物として１，４，７の添加剤を使用した場
合である。なお、下記第一表には参考として、上記混合
液晶に従来より用いられている添加剤（１０）ドテシル
トリメチルアンモニウムプロマィド（構造式）を添加し
た液晶組成物に関する測定データもあげている。Table 1 shows the cases where additives 1, 4, and 7 were used as additives. For reference, Table 1 below also lists measurement data regarding a liquid crystal composition to which the additive (10) dotesyltrimethylammonium bromide (structural formula), which has been conventionally used in the above mixed liquid crystal, is added. .
上記第一表に示す如く本発明の液晶組成物は従来のもの
に比較して導電率の温度依存性が著しく小さい。As shown in Table 1 above, the liquid crystal composition of the present invention has significantly smaller temperature dependence of conductivity than conventional compositions.
尚、本発明にかかる添加剤
に於いて電子供与性基であるＲ，Ｒ′としてはアルコキ
キシ基、アルキル基、ハロゲン等が可能であり、又Ｒ，
Ｒ′は同種のものでも異種のものでもよい。In addition, in the additive according to the present invention, the electron-donating groups R and R' can be an alkoxy group, an alkyl group, a halogen, etc.
R' may be of the same kind or of different kinds.
更に陰イオン性基である×ｅとしては他に等が可能であ
る。Further, as the anionic group xe, other groups are possible.
また本発明に係る上記添加剤（ィンモニウム塩）はアゾ
系液晶、アゾキシ液晶、ェステル系液晶等の、シツフ系
液晶を除く液晶物質又はその混合液晶全てに於いて、添
加剤として有効に使用可能である。Furthermore, the above additive (immonium salt) according to the present invention can be effectively used as an additive in all liquid crystal substances or mixed liquid crystals thereof, such as azo liquid crystal, azoxy liquid crystal, and ester liquid crystal, excluding Schiff liquid crystal. be.
従来より一般に用いられていた添加剤（例えば４級アン
モニウム塩）を添加した液晶組成物は導電率の温度依存
性が大きく、従って液晶表示装置の使用温度範囲の下限
に合わせて添加剤を添加した場合、高温領域における導
電率が必要以上に大きくなり過ぎるという欠点があった
。Liquid crystal compositions to which conventionally commonly used additives (for example, quaternary ammonium salts) have been added have a large temperature dependence of conductivity, and therefore additives have been added to match the lower limit of the operating temperature range of liquid crystal display devices. In this case, there was a drawback that the conductivity in the high temperature region was too high than necessary.
この為表示電極近傍に電気分解生成物が発生し易く、こ
れによって表示品位が低下し、表示装置の寿命を縮めて
いた。For this reason, electrolysis products are likely to be generated near the display electrodes, thereby degrading the display quality and shortening the life of the display device.
又それとともに無駄な電力を多量に消費していた。本発
明はこの問題点を解決するもので，あり、導電率の温度
依存性の非常に小さい液晶組成物を提供し、表示装置の
長寿命化、低消費電力化を達成させるものである。Additionally, a large amount of wasted electricity was consumed. The present invention aims to solve this problem by providing a liquid crystal composition whose conductivity has extremely low temperature dependence, thereby achieving a longer lifespan and lower power consumption of display devices.
Claims (1)
の塩が、シツフ系液晶を除く液晶物質に添加されてなる
ことを特徴とする液晶組成物。 ▲数式、化学式、表等があります▼（但しＲ，Ｒ′はア
ルキル基アルコキシ基、若しくはハロゲン、ＸはＨＳＯ
＿４，▲数式、化学式、表等があります▼ 若しくはＨＰＯ＿４）[Scope of Claims] 1. A liquid crystal composition characterized in that a very small amount of a salt of an imine compound represented by the following general formula is added to a liquid crystal substance other than a Schiff-type liquid crystal. ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (However, R and R' are alkyl groups, alkoxy groups, or halogens, and X is HSO
＿４、▲There are mathematical formulas, chemical formulas, tables, etc.▼ or HPO＿４）
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8323776A JPS6037155B2 (en) | 1976-07-12 | 1976-07-12 | liquid crystal composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8323776A JPS6037155B2 (en) | 1976-07-12 | 1976-07-12 | liquid crystal composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS538381A JPS538381A (en) | 1978-01-25 |
| JPS6037155B2 true JPS6037155B2 (en) | 1985-08-24 |
Family
ID=13796707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8323776A Expired JPS6037155B2 (en) | 1976-07-12 | 1976-07-12 | liquid crystal composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6037155B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5871979A (en) * | 1981-10-26 | 1983-04-28 | Alps Electric Co Ltd | Liquid crystal mixture |
-
1976
- 1976-07-12 JP JP8323776A patent/JPS6037155B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS538381A (en) | 1978-01-25 |
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