JPS5945021B2 - liquid crystal composition - Google Patents
liquid crystal compositionInfo
- Publication number
- JPS5945021B2 JPS5945021B2 JP15356976A JP15356976A JPS5945021B2 JP S5945021 B2 JPS5945021 B2 JP S5945021B2 JP 15356976 A JP15356976 A JP 15356976A JP 15356976 A JP15356976 A JP 15356976A JP S5945021 B2 JPS5945021 B2 JP S5945021B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal composition
- display
- present
- general formula
- 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.)
- Expired
Links
Description
【発明の詳細な説明】 本発明は新規なネマチツク液晶組成物に関する。[Detailed description of the invention] The present invention relates to novel nematic liquid crystal compositions.
さらに詳しくは、すくなくとも下記の一般式を有する化
合物を含有する液晶組成物に関する。Ｒｏ□Ｃｏ０貝Ｃ
Ｎ
（但しＲはアルキル基を意味する）
近年エレクトロニクス技術等の進歩により低電圧で駆動
でき、かつ安価な表示材料が要求されている。More specifically, the present invention relates to a liquid crystal composition containing at least a compound having the following general formula. Ro□Co0 shell C
N (R means an alkyl group) Recent advances in electronics technology have created a demand for inexpensive display materials that can be driven at low voltage.
この要求を満たす表示材料として現在液晶が注目されて
おり、既に一部の商品には液晶が使用されている。現在
表示体に使用されている液晶はネマチツク液晶であり、
ネマチツク液晶の電気光学的性質を応用している。Liquid crystals are currently attracting attention as a display material that satisfies this requirement, and liquid crystals are already being used in some products. The liquid crystal currently used for displays is nematic liquid crystal.
It takes advantage of the electro-optical properties of nematic liquid crystals.
このネマチツク液晶が表示体用素材として応用できるた
めには、液晶物質は次の要件を満たす必要がある。In order for this nematic liquid crystal to be applicable as a display material, the liquid crystal material must satisfy the following requirements.
１、化学的に安定である。1. Chemically stable.
２、液晶温度範囲が広い。2. Wide liquid crystal temperature range.
すくなくとも常温を含む。３、ダイナミック駆動するた
めには温度によつて印加電圧に対する光透過率の変化の
しきい値が余り変化しないことが必要である。Including at least room temperature. 3. In order to perform dynamic driving, it is necessary that the threshold value of the change in light transmittance with respect to the applied voltage does not change much depending on the temperature.
１、２に関しては液晶の一般式より推察でき、今まで１
、２を満足する色々な液晶が合成されてきた。Regarding 1 and 2, it can be inferred from the general formula of liquid crystal, and until now 1
Various liquid crystals that satisfy , 2 have been synthesized.
しかし３に関しては如何にしたら改良できるかという一
般的な方法は発見されていなかつた。しかし研究の結果
液晶組成分において、すくなくとも一種類の成分液晶の
液晶温度範囲が非常に広く、かつこの成分が１０％以上
含有されることが必要であるという条件が見つかつた。
本発明はこのような条件を満たす液晶を合成し、これら
の液晶を添加することにより３の条件を満たす液晶組成
物を作るためになされたものである。However, with regard to 3, no general method has been discovered as to how to improve it. However, as a result of research, it has been found that at least one type of liquid crystal component must have a very wide liquid crystal temperature range and must contain 10% or more of this component.
The present invention has been made in order to synthesize liquid crystals that satisfy these conditions and to create a liquid crystal composition that satisfies condition 3 by adding these liquid crystals.
本発明の液晶組成物は下記の一般式で示される液晶化合
物を添加することにより得られる。（但しＲはアルキル
基を意味する）
この化合物は４−（４−アルコキシフェニル）安息香酸
クロライドと２−クロルー４−シアノフェノールをエス
テル化させることにより合成できる。The liquid crystal composition of the present invention can be obtained by adding a liquid crystal compound represented by the following general formula. (However, R means an alkyl group.) This compound can be synthesized by esterifying 4-(4-alkoxyphenyl)benzoic acid chloride and 2-chloro-4-cyanophenol.
合成した液晶の温度特性の一例を表にしめす。An example of the temperature characteristics of the synthesized liquid crystal is shown in the table.
これらの液晶を添加した液晶組成物の例を実施例に示す
が、添加例はこれだけに限定するものではない。実施例
１の液晶組成物を使用し表示体を作り、応答速度、寿命
、温度特性等の試験をしたところなんら問題となるとこ
ろはなかつた。Examples of liquid crystal compositions to which these liquid crystals are added are shown in Examples, but the addition examples are not limited to these. A display was made using the liquid crystal composition of Example 1 and tested for response speed, lifespan, temperature characteristics, etc., and no problems were found.
又電圧の変化に対する光の透過率の変化のしきい値は、
温度によつてあまり変化しないことがわかつた。このよ
うな特性を有する本発明の液晶組成物は表示体、特にダ
イナミツク駆動する表示体にとつて好適なものである。
本発明の液晶組成物を用いた表示体はダイナミツク駆動
できるので、スタティツク駆動のとき、表示セルから引
き出すリード線の多い時計．電卓等の表示部に応用でき
るものである。Also, the threshold value of the change in light transmittance with respect to the change in voltage is
It was found that it does not change much depending on temperature. The liquid crystal composition of the present invention having such characteristics is suitable for display bodies, particularly dynamically driven displays.
Since the display using the liquid crystal composition of the present invention can be dynamically driven, it can be used as a watch with many lead wires drawn out from the display cell when statically driven. This can be applied to the display section of calculators, etc.
Claims (1)
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はアルキル基を意味する）。[Scope of Claims] 1. A liquid crystal composition characterized by containing at least a compound having the following general formula. ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (However, R means an alkyl group).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15356976A JPS5945021B2 (en) | 1976-12-21 | 1976-12-21 | liquid crystal composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15356976A JPS5945021B2 (en) | 1976-12-21 | 1976-12-21 | liquid crystal composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5376984A JPS5376984A (en) | 1978-07-07 |
| JPS5945021B2 true JPS5945021B2 (en) | 1984-11-02 |
Family
ID=15565352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15356976A Expired JPS5945021B2 (en) | 1976-12-21 | 1976-12-21 | liquid crystal composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5945021B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0019665B2 (en) * | 1979-05-28 | 1987-12-16 | MERCK PATENT GmbH | Liquid-crystal compositions |
| JPH0610170B2 (en) * | 1984-12-26 | 1994-02-09 | チッソ株式会社 | Novel optically active compound and liquid crystal composition |
-
1976
- 1976-12-21 JP JP15356976A patent/JPS5945021B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5376984A (en) | 1978-07-07 |
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