JPH01254794A - Liquid crystal composition - Google Patents

Liquid crystal composition

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Publication number
JPH01254794A
JPH01254794A JP8259688A JP8259688A JPH01254794A JP H01254794 A JPH01254794 A JP H01254794A JP 8259688 A JP8259688 A JP 8259688A JP 8259688 A JP8259688 A JP 8259688A JP H01254794 A JPH01254794 A JP H01254794A
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JP
Japan
Prior art keywords
formulas
tables
chemical
mathematical
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.)
Granted
Application number
JP8259688A
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Japanese (ja)
Other versions
JP2721831B2 (en
Inventor
Itsuo Shimizu
五男雄 清水
Kenji Furukawa
古川 顕治
Masami Tanaka
雅美 田中
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JNC Corp
Original Assignee
Chisso Corp
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Priority to JP8259688A priority Critical patent/JP2721831B2/en
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Publication of JP2721831B2 publication Critical patent/JP2721831B2/en
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Abstract

PURPOSE:To obtain a liquid crystal composition, containing a mixture of specific two kinds of polycyclic compounds and capable of exhibiting a smectic A phase within a wide temperature range including practical temperatures and providing materials having a nematic or cholesteric phase with an extremely narrow temperature range. CONSTITUTION:The objective composition containing (A) one or more compounds expressed by formula I [X is 1-8C alkyl or alkoxy; Y is -COO-, -OOC-, -C=C-, -CH2CH2- or single bond; Z is -CN or -NCS; formula II is formulas III-XI; formula XIII is formulas IV and VII-X (provided that formulas II and XII are the same ring only when both are formula IV)] and (B) one or more compounds expressed by formula XIII (X<1> and Z<1> are 1-8C alkyl or alkoxy; Y<1> is -COO-, -OOC-, -C<=C-, -CH2CH2- or single bond; formula XIV is formulas IV-X).

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は液晶表示素子に用いられる液晶組成物に関し、
さらに詳しくはスメクチック人相(以下S人相と略す)
を利用する、熱書込み型液晶素子に使用される液晶組成
物に関する。
Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a liquid crystal composition used in a liquid crystal display element,
For more details, see Smectic physiognomy (hereinafter abbreviated as S physiognomy).
The present invention relates to a liquid crystal composition used in a thermal writing type liquid crystal element.

(従来の技術) 大形デイスプレィを実行する一つの方法として、レーザ
ー熱書込みセル投写方式の大形表示がある。
BACKGROUND OF THE INVENTION One method of implementing large-format displays is laser thermal writing cell projection large-format displays.

これは、SA相と、ネマチック相(N相と略記する)も
しくはコレステリック相(N*と略記する)との間の相
転移動作を利用して熱書込みを施したセルをライトバル
ブとしてスクリーン上に画像を投影するものである。こ
の熱書込みセルに用いられる液晶材料には次のような特
性が要求されている。
This utilizes the phase transition between the SA phase and the nematic phase (abbreviated as N phase) or cholesteric phase (abbreviated as N*) to print a thermally written cell on a screen as a light valve. It projects images. The following characteristics are required of the liquid crystal material used in this thermally written cell.

(7)実用の温度を含む広い温度範囲でSA相を示すこ
と。好ましくは一20°C〜60℃に亘ってSA相を有
すること。
(7) It exhibits the SA phase over a wide temperature range including practical temperatures. It preferably has an SA phase over a temperature range of -20°C to 60°C.

(イ)非常に狭いN相もしくはN 相温度範囲を示すこ
と。好ましくは0.2℃〜1.0 ’Cの巾のN相もし
くはN*相を有すること。
(a) Indicate a very narrow N-phase or N-phase temperature range. It preferably has an N phase or N* phase with a width of 0.2°C to 1.0'C.

(つ)屈折率異方性(八がと略記する)が大きいこと。(1) Large refractive index anisotropy (abbreviated as Hachiga).

(1)誘電率異方性(Δεと略記する)が大きいこと。(1) Large dielectric anisotropy (abbreviated as Δε).

(オ)粘度が小さいこと。(e) Low viscosity.

@)比飲・相転移エネルギーが小さいこと。@)The relative drinking/phase transition energy is small.

これらの中で特に重要な仁とけ(ア)及び(イ)の諸項
である。
Among these, the terms (a) and (b) are particularly important.

この特性を満足させようとして次のような一般式で表わ
されるスメクチック液晶の混合が試みられている(第1
0回液晶討論会講演予稿集13AO7及び第11回液晶
討論会予稿集lN13 )。
In an attempt to satisfy this characteristic, attempts have been made to mix smectic liquid crystals expressed by the following general formula (first
Proceedings of the 0th LCD Symposium 13AO7 and Proceedings of the 11th LCD Symposium IN13).

r f&、上記の化合物を主成分とする熱書込みセル用液晶
材料が幾つか各社で開発されておシ、その相転移温度及
びネマチック相温度巾を伴なってそれらを例示すると第
1表のようになる。
Several companies have developed liquid crystal materials for thermal writing cells that contain the above-mentioned compounds as main components. become.

しかしながら、これらは前記の(ア)項及び(イ)項を
併せて満足するとは言い難く、さらにこれらの成分のア
ルキル基またはアルキルオキシ基の鎖長が大きいことか
らこれらの液晶材料のN相の粘度はやや大きいことが予
想され、熱書込みセル用液晶としてよシ好ましい液晶材
料が切望される。
However, these cannot be said to satisfy both of the above items (a) and (b), and furthermore, because the chain length of the alkyl group or alkyloxy group of these components is large, the N phase of these liquid crystal materials is It is expected that the viscosity will be somewhat high, and a liquid crystal material that is suitable for use as a liquid crystal for thermal writing cells is desired.

(発明が解決しようとする課題) 以上に述べたことから明らかなように1本発明の目的は
実用の温度を含む広い温度範囲でスメクチックA相を呈
し、非常に狭い温度中のネマチック相またはコレステリ
ック相を持つ液晶材料を提供することである。
(Problems to be Solved by the Invention) As is clear from the above, one object of the present invention is to exhibit a smectic A phase in a wide temperature range including practical temperatures, and a nematic phase or cholesteric phase in a very narrow temperature range. An object of the present invention is to provide a liquid crystal material having a phase.

(課題を解決するための手段) 本発明は (11(A)一般式 (式中、Xは炭素数1〜8のアルキル基もしくはアルコ
キシ基を、Yは−COO−1−OOC−1−C=C−1
−CH,CH,−または単結合を、Zは−CN または
る。)にて表わされる化合物少くとも1つからなる第1
成分、及び (Bl一般式 (式中、Xl及び21はそれぞれ独立に炭素数1〜8の
アルキル基もしくはアルコキシ基を、Y′は−COO−
1−OOC−1−C=C−1−CHtCHt−’tた少
くとも1つからなる第2成分、とを含有することを特徴
とするスメクチック液晶性組成物、である。本発明の好
ましい態様は以下の(2)と(3)である。
(Means for Solving the Problems) The present invention is based on the general formula (11(A) (wherein, X is an alkyl group or an alkoxy group having 1 to 8 carbon atoms, and Y is -COO-1-OOC-1-C =C-1
-CH, CH, - or a single bond, Z is -CN or. ) A first compound consisting of at least one compound represented by
component, and (Bl general formula (wherein, Xl and 21 each independently represent an alkyl group or an alkoxy group having 1 to 8 carbon atoms, and Y' is -COO-
1-OOC-1-C=C-1-CHtCHt-'t. Preferred embodiments of the present invention are the following (2) and (3).

(2)前記(1)項において、第1成分が一般式(式中
、Xは炭素数1〜8のアルキル基もしくは表わされる化
合物少くとも1つからなシ、第2成分が一般式 (式中、Xl及びZlはそれぞれ独立に炭素数1〜8の
アルキル基もしくはアルコキシ基を示し、て表わされる
化合物少くとも1つからなる、スメクチック液晶性組成
物。
(2) In the above item (1), the first component is of the general formula (wherein X is an alkyl group having 1 to 8 carbon atoms or at least one compound represented by the formula wherein Xl and Zl each independently represent an alkyl group or an alkoxy group having 1 to 8 carbon atoms, and a smectic liquid crystal composition comprising at least one compound represented by:

(3)前記(1)項または(2)項において、第1成分
の含量が20〜50重量係であり、第2成分の含量が8
0〜50重量係であるスメクチック液晶性組成物。
(3) In the above (1) or (2), the content of the first component is 20 to 50% by weight, and the content of the second component is 8% by weight.
A smectic liquid crystal composition having a weight ratio of 0 to 50.

本発明において第1成分として用いられる化合物を例示
すると R−i CN    (1−7) R(XンCN    (1−10) R(訓coo ((訓CN   (1−12)RO()
COO()CN   (1−13)R(トHICHイ”
5)−cN(1−14)(これらの式においてRは炭素
数1〜8のアルキル基を示す。)および各式において−
CNを−NC5に換えた化合物などを挙げることができ
る。これらの中では(1−1)、(1−2)、(I−5
)、(1−7)、(ト8)及び(1−9)の各式で表わ
される化合物力よそのへe値ならびに粘性の面から特に
好ましい。
Examples of compounds used as the first component in the present invention are R-i CN (1-7) R(
COO()CN (1-13)R(TOHICHi)
5) -cN(1-14) (in these formulas, R represents an alkyl group having 1 to 8 carbon atoms) and in each formula -
Examples include compounds in which CN is replaced with -NC5. Among these, (1-1), (1-2), (I-5
), (1-7), (g.8) and (1-9) are particularly preferred from the viewpoint of e-value and viscosity in addition to force.

本発明において第2成分として用いられる化合物として
は、次の各式で表わされる化合物を例示することができ
る。
Examples of the compound used as the second component in the present invention include compounds represented by the following formulas.

(これらの式においてR及びR1はそれぞれ独立に炭素
数1〜8のアルキル基を示す。)これらの中では(n−
1)式で表わされる化合物が好ましい。第1成分はN相
におけるΔeが大きな正値である化合物であるのに対し
、第2成分はΔεが小さな正値もしくは負値である化合
物である。
(In these formulas, R and R1 each independently represent an alkyl group having 1 to 8 carbon atoms.) Among these, (n-
1) Compounds represented by the formula are preferred. The first component is a compound in which Δe in the N phase is a large positive value, whereas the second component is a compound in which Δε is a small positive or negative value.

本発明において、第1成分の化合物は10〜80重量係
、好ましくは20〜50重量係含有され、第2成分の化
合物は90〜20重−1%、好ましくは80〜50重量
係含有される。
In the present invention, the first component compound is contained in an amount of 10 to 80% by weight, preferably 20 to 50% by weight, and the second component compound is contained in an amount of 90 to 20% by weight, preferably 80 to 50% by weight. .

第1成分の含量が10重量幅未満または80重ffi%
を越えると狭いN相温度巾と低い融点とを有する組成物
が得られないので好ましくない。また第1成分が10重
量係未満では得られる組成物のΔε値が小さくなるので
好ましくない。
The content of the first component is less than 10% by weight or 80% by weight
Exceeding this is not preferable because a composition having a narrow N-phase temperature range and a low melting point cannot be obtained. Further, if the first component is less than 10% by weight, the resulting composition will have a small Δε value, which is not preferable.

本発明においては、前述の第1成分及び第2成分の外に
本発明の目的を損わない範囲で他の化合物を含有させる
ことができる。これらには、例えばカイラル剤、染料、
スメクチック液晶、透明点の高い液晶などを挙げること
ができる。しかし、3つの6員環を持つ高温液晶は透明
点及びスメクチック−ネマチック転移温度(SN点と略
記する)と同時に粘度をも増大させるのでその含量を1
0重量係以下とすべきである。
In the present invention, other compounds may be contained in addition to the above-mentioned first component and second component within a range that does not impair the object of the present invention. These include, for example, chiral agents, dyes,
Examples include smectic liquid crystal and liquid crystal with a high clearing point. However, high-temperature liquid crystals with three 6-membered rings increase their viscosity at the same time as their clearing point and smectic-nematic transition temperature (abbreviated as SN point), so their content should be reduced to 1
It should be less than 0 weight factor.

(作用ならびに効果) 本発明によシ、実用の温度を含む広いSA相温度範囲と
極めて狭いN相又はN*相の温度範囲とを持つ液晶組成
物が得られる。との液晶材料を熱書込みセルに用いるこ
とによシ、速い書込み速度、良好なコントラストを有し
、使用及び保存温度の低い液晶素子が実現できる。
(Functions and Effects) According to the present invention, a liquid crystal composition having a wide SA phase temperature range including practical temperatures and an extremely narrow N phase or N* phase temperature range can be obtained. By using a liquid crystal material of this type in a thermal writing cell, a liquid crystal element having a fast writing speed, good contrast, and low operating and storage temperatures can be realized.

本発明では、第1表に示した従来の組成物のように極性
の強い化合物同志の混合ではなく、極性の強い化合物か
らなる第1成分と極性の弱い化合物からなる第2成分と
を混合しているので、よシ融点(即ち結晶−スメクチッ
ク転移温度)の降下を大きくできる。
In the present invention, instead of mixing highly polar compounds as in the conventional compositions shown in Table 1, a first component consisting of a highly polar compound and a second component consisting of a weakly polar compound are mixed. Therefore, the melting point (i.e., crystal-smectic transition temperature) can be lowered significantly.

また、S人相を持たないネマチック液晶の混合によi)
 SA相が誘起されるという現象を本発明は最大限に利
用しているので、透明点及びネマチック相温度範囲の設
定が容易であるという利点がある。
In addition, by mixing nematic liquid crystals that do not have S physiognomy, i)
Since the present invention makes maximum use of the phenomenon that the SA phase is induced, it has the advantage that the clearing point and nematic phase temperature range can be easily set.

さらに従来のSA相を有する化合物を主とする組成物に
比べて成分化合物の末端のアルキルもしくはアルコキシ
鎖を小さくできるので得られる組成物のN相又はN 相
での粘度を小さくできると考えられる。また、極性の強
い化合物と極性の弱い化合物とからなる組成物であるの
で、会合状態をとシ易い極性化合物の会合が抑制される
ことによるさらなる粘度低下も期待できる。
Furthermore, since the terminal alkyl or alkoxy chains of the component compounds can be made smaller than in conventional compositions mainly composed of compounds having an SA phase, it is thought that the viscosity of the resulting composition in the N phase or N phase can be made smaller. Furthermore, since the composition is composed of a highly polar compound and a weakly polar compound, further viscosity reduction can be expected by suppressing the association of the polar compounds, which tend to break off the association state.

(実施例) 以下実施例により本発明をさらに詳しく説明する。以下
の例において係は重量%を意味し、相転移温度及びネマ
チック相温度巾は℃にて示す。融点は走査製差動熱量計
(DSC)により、毎分5℃の昇温及び降温速度で 室温 → 透明点より約15℃高い温度→ −50℃(
30分間保持) → 透明点より約15℃高い温度 の走査を行なって求めた。この外の相転移温度は等方性
液体の状態から毎分2℃の降温速度で冷却させ顕微鏡観
測により求めた。
(Example) The present invention will be explained in more detail with reference to Examples below. In the following examples, % means weight %, and phase transition temperatures and nematic phase temperature widths are given in °C. The melting point was measured using a scanning differential calorimeter (DSC) at a heating and cooling rate of 5°C per minute from room temperature to approximately 15°C higher than the clearing point to -50°C (
(held for 30 minutes) -> Determined by scanning at a temperature approximately 15°C higher than the clearing point. The other phase transition temperatures were determined by microscopic observation after cooling from an isotropic liquid state at a cooling rate of 2°C per minute.

実施例1〜9 第1成分として用いる液晶混合物として第2表に示す混
合物A−Fを調製した。この物の融点及びネマチック−
透明点を併せて示した。
Examples 1 to 9 Mixtures A to F shown in Table 2 were prepared as liquid crystal mixtures used as the first component. Melting point and nematic of this product
The clearing point is also shown.

また、第2成分として用いる液晶混合物として以下のG
%H及びJの混合物を調製し、その相転移温度を同様に
第3表に示した。
In addition, as a liquid crystal mixture used as the second component, the following G
%H and J were prepared and their phase transition temperatures are also shown in Table 3.

次にこの混合物A−H及びJを用いて第4表に示す組成
物1〜9を調製した。これらの組成物の相転移温度及び
そのネマチック相温度巾を第5表に示す。
Next, using these mixtures A-H and J, compositions 1 to 9 shown in Table 4 were prepared. The phase transition temperatures and nematic phase temperature ranges of these compositions are shown in Table 5.

実施例10 第1成分として混合物Bを37.0重量部、第2成分と
して混合物Hを55.6重量部用い、さらにカイラル材
としてBDH社製CB15(4−(2−メチルブチル)
 −4’−シアノビフェニル)7.4重量部を混合して
液晶組成物を調製した。この組成物の融点は−19,4
℃、スメクチック−コレステリック相転移点は60.7
℃、コレステリック−透明点は62.3℃であった。す
なわちこの物のN*相温度巾は1,6℃である。
Example 10 37.0 parts by weight of mixture B was used as the first component, 55.6 parts by weight of mixture H was used as the second component, and CB15 (4-(2-methylbutyl) manufactured by BDH Co., Ltd.) was used as a chiral material.
-4'-cyanobiphenyl) was mixed to prepare a liquid crystal composition. The melting point of this composition is -19,4
°C, smectic-cholesteric phase transition point is 60.7
°C, cholesteric-clearing point was 62.3 °C. That is, the N* phase temperature range of this product is 1.6°C.

以上 特許出願人   チッソ株式会社that's all Patent applicant: Chisso Corporation

Claims (3)

【特許請求の範囲】[Claims] (1)(A)一般式 ▲数式、化学式、表等があります▼( I ) (式中、Xは炭素数1〜8のアルキル基もしくはアルコ
キシ基を、Yは−COO−、−OOC−、−C≡C−、
−CH_2CH_2−または単結合を、Zは−CNまた
は−NCSをそれぞれ示し、▲数式、化学式、表等があ
ります▼は▲数式、化学式、表等があります▼、▲数式
、化学式、表等があります▼、▲数式、化学式、表等が
あります▼、▲数式、化学式、表等があります▼、▲数
式、化学式、表等があります▼、▲数式、化学式、表等
があります▼、▲数式、化学式、表等があります▼、▲
数式、化学式、表等があります▼または▲数式、化学式
、表等があります▼を示し、▲数式、化学式、表等があ
ります▼は▲数式、化学式、表等があります▼、▲数式
、化学式、表等があります▼、▲数式、化学式、表等が
あります▼、▲数式、化学式、表等があります▼または
▲数式、化学式、表等があります▼を示す。 但し、▲数式、化学式、表等があります▼と▲数式、化
学式、表等があります▼が同一の環となるのはともに▲
数式、化学式、表等があります▼である場合に限る。)
に表わされる化合物少くとも1つからなる第1成分、及
び(B)一般式 ▲数式、化学式、表等があります▼(II) (式中、X^1及びZ^1はそれぞれ独立に炭素数1〜
8のアルキル基もしくはアルコキシ基を、Y^1は−C
OO−、−OOC−、−C≡C−、−CH_2CH_2
−または単結合をそれぞれ示し、▲数式、化学式、表等
があります▼は▲数式、化学式、表等があります▼、▲
数式、化学式、表等があります▼、▲数式、化学式、表
等があります▼、▲数式、化学式、表等があります▼、
▲数式、化学式、表等があります▼、▲数式、化学式、
表等があります▼ または▲数式、化学式、表等があります▼を示す。)に
て表わされる化合物少くとも1つからなる第2成分、と
を含有することを特徴とするスメクチツク液晶性組成物
(1) (A) General formula ▲ Numerical formulas, chemical formulas, tables, etc. ▼ (I) (In the formula, X is an alkyl group or alkoxy group having 1 to 8 carbon atoms, Y is -COO-, -OOC-, -C≡C-,
-CH_2CH_2- or a single bond, Z indicates -CN or -NCS, respectively, ▲ has mathematical formulas, chemical formulas, tables, etc. ▼ has ▲ mathematical formulas, chemical formulas, tables, etc. ▼, ▲ has mathematical formulas, chemical formulas, tables, etc. ▼, ▲There are mathematical formulas, chemical formulas, tables, etc.▼,▲There are mathematical formulas, chemical formulas, tables, etc.▼,▲There are mathematical formulas, chemical formulas, tables, etc.▼,▲There are mathematical formulas, chemical formulas, tables, etc.▼,▲Mathematical formulas, chemical formulas , there are tables, etc. ▼, ▲
There are mathematical formulas, chemical formulas, tables, etc. ▼ or ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ ▲ There are mathematical formulas, chemical formulas, tables, etc. There are tables, etc. ▼, ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼, ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ or ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼. However, ▲There are mathematical formulas, chemical formulas, tables, etc.▼ and ▲There are mathematical formulas, chemical formulas, tables, etc.▼ are both ▲
Limited to cases where there are mathematical formulas, chemical formulas, tables, etc. ▼. )
(B) General formula ▲ Numerical formula, chemical formula, table, etc. ▼ (II) (In the formula, X^1 and Z^1 each independently represent the number of carbon atoms. 1~
8 alkyl group or alkoxy group, Y^1 is -C
OO-, -OOC-, -C≡C-, -CH_2CH_2
− or a single bond respectively, ▲ there are mathematical formulas, chemical formulas, tables, etc. ▼ means ▲ there are mathematical formulas, chemical formulas, tables, etc. ▼, ▲
There are mathematical formulas, chemical formulas, tables, etc. ▼, ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼, ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼,
▲There are mathematical formulas, chemical formulas, tables, etc.▼, ▲Mathematical formulas, chemical formulas,
There are tables, etc. ▼ or ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ Indicates. A second component consisting of at least one compound represented by:
(2)特許請求の範囲第(1)項において、第1成分が
、一般式 ▲数式、化学式、表等があります▼( I a) (式中、Xは炭素数1〜8のアルキル基もしくはアルコ
キシ基を、▲数式、化学式、表等があります▼は▲数式
、化学式、表等があります▼、▲数式、化学式、表等が
あります▼、▲数式、化学式、表等があります▼または
▲数式、化学式、表等があります▼をそれぞれ示す。)
にて表わされる化合物少くとも1つからなり、第2成分
が一般式 ▲数式、化学式、表等があります▼(IIa) (式中、X^1及びZ^1はそれぞれ独立に炭素数1〜
8のアルキル基もしくはアルコキシ基を示し、▲数式、
化学式、表等があります▼は▲数式、化学式、表等があ
ります▼または▲数式、化学式、表等があります▼を示
す。)に て表わされる化合物少くとも1つからなるスメクチツク
液晶性組成物。
(2) In claim (1), the first component is a general formula ▲ Numerical formula, chemical formula, table, etc. ▼ (I a) (wherein, X is an alkyl group having 1 to 8 carbon atoms or For an alkoxy group, ▲ there are mathematical formulas, chemical formulas, tables, etc. ▼ ▲ there are mathematical formulas, chemical formulas, tables, etc. ▼, ▲ there are mathematical formulas, chemical formulas, tables, etc. ▼, ▲ there are mathematical formulas, chemical formulas, tables, etc. ▼ or ▲ mathematical formulas , chemical formula, table, etc. ▼ is shown respectively.)
It consists of at least one compound represented by the formula, and the second component is a general formula ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (IIa) (In the formula, X^1 and Z^1 each independently have a carbon number of 1 to
8 represents an alkyl group or an alkoxy group, ▲Numerical formula,
There are chemical formulas, tables, etc. ▼ indicates ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ or ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼. ) A smectic liquid crystal composition comprising at least one compound represented by:
(3)特許請求の範囲第(1)項または第(2)項にお
いて、第1成分の含量が20〜50重量%であり、第2
成分の含量が80〜50重量%であるスメクチツク液晶
性組成物。
(3) In claim (1) or (2), the content of the first component is 20 to 50% by weight, and the content of the second component is 20 to 50% by weight.
A smectic liquid crystal composition in which the content of the components is 80 to 50% by weight.
JP8259688A 1988-04-04 1988-04-04 Liquid crystal composition Expired - Lifetime JP2721831B2 (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8259688A JP2721831B2 (en) 1988-04-04 1988-04-04 Liquid crystal composition

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JPH01254794A true JPH01254794A (en) 1989-10-11
JP2721831B2 JP2721831B2 (en) 1998-03-04

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ID=13778868

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100544104B1 (en) * 1998-05-26 2006-03-23 삼성에스디아이 주식회사 Nematic liquid crystal composition and liquid crystal display device using the same
KR100544105B1 (en) * 1998-05-26 2006-03-24 삼성에스디아이 주식회사 Nematic liquid crystal composition and liquid crystal display device using the same
JP2015537056A (en) * 2012-09-10 2015-12-24 蘇州漢朗光電有限公司Halation Photonics Corporation Smectic A phase liquid crystal material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100544104B1 (en) * 1998-05-26 2006-03-23 삼성에스디아이 주식회사 Nematic liquid crystal composition and liquid crystal display device using the same
KR100544105B1 (en) * 1998-05-26 2006-03-24 삼성에스디아이 주식회사 Nematic liquid crystal composition and liquid crystal display device using the same
JP2015537056A (en) * 2012-09-10 2015-12-24 蘇州漢朗光電有限公司Halation Photonics Corporation Smectic A phase liquid crystal material

Also Published As

Publication number Publication date
JP2721831B2 (en) 1998-03-04

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