JPH0759704B2 - Liquid crystal composition and liquid crystal display device - Google Patents
Liquid crystal composition and liquid crystal display deviceInfo
- Publication number
- JPH0759704B2 JPH0759704B2 JP62203852A JP20385287A JPH0759704B2 JP H0759704 B2 JPH0759704 B2 JP H0759704B2 JP 62203852 A JP62203852 A JP 62203852A JP 20385287 A JP20385287 A JP 20385287A JP H0759704 B2 JPH0759704 B2 JP H0759704B2
- Authority
- JP
- Japan
- Prior art keywords
- group
- liquid crystal
- formula
- hydrogen atom
- halogen atom
- 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 - Fee Related
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims description 96
- 239000000203 mixture Substances 0.000 title claims description 35
- 239000000975 dye Substances 0.000 claims description 67
- 125000005843 halogen group Chemical group 0.000 claims description 25
- 125000000217 alkyl group Chemical group 0.000 claims description 24
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 24
- 125000003545 alkoxy group Chemical group 0.000 claims description 22
- 125000004183 alkoxy alkyl group Chemical group 0.000 claims description 19
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 claims description 11
- 150000004056 anthraquinones Chemical class 0.000 claims description 11
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 10
- 125000001424 substituent group Chemical group 0.000 claims description 10
- 125000005346 substituted cycloalkyl group Chemical group 0.000 claims description 10
- 125000003118 aryl group Chemical group 0.000 claims description 8
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 17
- -1 for example Chemical group 0.000 description 12
- 230000005856 abnormality Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000011521 glass Substances 0.000 description 8
- 229920001721 polyimide Polymers 0.000 description 8
- 239000009719 polyimide resin Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 230000008021 deposition Effects 0.000 description 7
- 239000000049 pigment Substances 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 125000001309 chloro group Chemical group Cl* 0.000 description 4
- IGARGHRYKHJQSM-UHFFFAOYSA-N cyclohexylbenzene Chemical compound C1CCCCC1C1=CC=CC=C1 IGARGHRYKHJQSM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 125000001153 fluoro group Chemical group F* 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000987 azo dye Substances 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- 125000005037 alkyl phenyl group Chemical group 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 125000004802 cyanophenyl group Chemical group 0.000 description 2
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000005083 alkoxyalkoxy group Chemical group 0.000 description 1
- 125000004453 alkoxycarbonyl group Chemical group 0.000 description 1
- 125000005036 alkoxyphenyl group Chemical group 0.000 description 1
- 239000001000 anthraquinone dye Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 125000004106 butoxy group Chemical group [*]OC([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 125000006226 butoxyethyl group Chemical group 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- WCLNGBQPTVENHV-MKQVXYPISA-N cholesteryl nonanoate Chemical compound C([C@@H]12)C[C@]3(C)[C@@H]([C@H](C)CCCC(C)C)CC[C@H]3[C@@H]1CC=C1[C@]2(C)CC[C@H](OC(=O)CCCCCCCC)C1 WCLNGBQPTVENHV-MKQVXYPISA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 125000005448 ethoxyethyl group Chemical group [H]C([H])([H])C([H])([H])OC([H])([H])C([H])([H])* 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004184 methoxymethyl group Chemical group [H]C([H])([H])OC([H])([H])* 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004115 pentoxy group Chemical group [*]OC([H])([H])C([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 125000003884 phenylalkyl group Chemical group 0.000 description 1
- 238000001782 photodegradation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
Description
【発明の詳細な説明】 (産業上の利用分野) 本発明はコントラスト、耐光性及び低温での安定性に優
れたカラー液晶組成物及び液晶表示素子に関する。TECHNICAL FIELD The present invention relates to a color liquid crystal composition and a liquid crystal display device which are excellent in contrast, light resistance and stability at low temperatures.
(従来の技術) 液晶に二色性色素を添加するゲストホスト効果を利用し
た液晶表示素子は、 1) 視野角が広い。(Prior Art) A liquid crystal display device utilizing a guest-host effect in which a dichroic dye is added to liquid crystal has a wide viewing angle.
2)色素の選択により多彩な表示色が容易に実現でき
る。2) Various display colors can be easily realized by selecting the dye.
3)偏光板を必ずしも必要としないため明るい表示が可
能。3) Bright display is possible because a polarizing plate is not necessarily required.
などの特徴を有するため、特に中〜大型表示に適した液
晶表示素子として注目されている。Since it has such characteristics, it is attracting attention as a liquid crystal display element particularly suitable for medium to large-sized display.
従来、液晶に二色性色素を添加するゲストホスト効果を
利用した液晶表示素子は高コントラスト、高遮光性、長
い寿命、低温での安定性及び多彩な色相を同時に満足さ
せることは困難であった。この原因の一つは二色性、耐
光性及び溶解性の共に優れた二色性色素が少ないことの
外に、異種の色素を配合した場合に、何れかの色素の光
劣化がしばしば促進され、色素を単独で用いた場合より
も、耐光性が低下してしまうことにあり、この現象はア
ゾ色素とアントラキノン色素を配合した場合に顕著であ
る。しかしながら、現在の二色性色素は概してイエロー
系、レッド系はアゾ色素が優れ、ブルー系はアントラキ
ノン系色素が優れているため、ブラック、ブラウン、ダ
ークブルーなどのイエロー系、レッド系及びブルー系の
色素を配合することが必要な色相については、特にコン
トラストと長寿命及び低温での安定性を実現させること
が難しい、という問題点があった。Conventionally, it has been difficult for a liquid crystal display device utilizing a guest-host effect in which a dichroic dye is added to liquid crystal to simultaneously satisfy high contrast, high light-shielding property, long life, stability at low temperature and various hues. . One of the reasons for this is that, in addition to the small number of dichroic dyes that are excellent in dichroism, light resistance, and solubility, when different dyes are blended, photodegradation of either dye is often promoted. The light resistance is lower than that when the dyes are used alone, and this phenomenon is remarkable when the azo dye and the anthraquinone dye are blended. However, current dichroic dyes are generally yellow-based, red-based azo dyes are excellent, and blue-based anthraquinone-based dyes are excellent, so black, brown, dark blue, and other yellow-based, red-based, and blue-based With respect to hues that require the addition of dyes, there is a problem that it is difficult to realize particularly contrast, long life, and stability at low temperatures.
(発明が解決しようとする問題点) 本発明は、概してアゾ色素が優れているというレッド系
二色性色素にアントラキノン系二色性色素を配合して
も、色素配合の組合せを最適化することによってコント
ラスト、遮光性、低温での安定性、特に400nm以下の波
長の光をカットする紫外線カットフィルターを使用した
場合に耐光性を大幅に改善できることを見いだし、上記
の従来の問題点を解決し得るカラー液晶組成物及び液晶
表示素子の提供を目的とする。(Problems to be Solved by the Invention) The present invention is to optimize the combination of dyes even if an anthraquinone dichroic dye is added to a red dichroic dye, which is generally superior to azo dyes. It was found that the contrast, light-shielding property, stability at low temperature, and especially when using an ultraviolet cut filter that cuts light with a wavelength of 400 nm or less, the light resistance can be significantly improved, and the above conventional problems can be solved. An object is to provide a color liquid crystal composition and a liquid crystal display device.
(問題を解決するための手段) 本発明はコントラスト、高遮光性、低温での安定性及び
耐光性に優れた液晶組成物及びそれを用いた液晶表示素
子を提供することにあり、その要旨は、液晶組成物中に
下記(A)群、(B)群、(C)群及び(D)群で示さ
れる二色性色素を各々の群から少なくとも一種ずつ含む
ことを特徴とする液晶組成物及び該液晶組成物を少なく
とも一方が透明な電極基板間に担持した液晶表示素子に
存する。(Means for Solving the Problem) The present invention is to provide a liquid crystal composition excellent in contrast, high light-shielding property, stability at low temperature, and light resistance, and a liquid crystal display device using the same, and the gist thereof is A liquid crystal composition comprising at least one dichroic dye represented by each of the following groups (A), (B), (C) and (D) in each liquid crystal composition: And a liquid crystal display device in which at least one of the liquid crystal compositions is carried between transparent electrode substrates.
(A)群 下記一般式〔I〕で表されるアントラキノン系二色性色
素。Group (A) Anthraquinone-based dichroic dye represented by the following general formula [I].
(式中、R1〜R3は水素原子、アルキル基、置換基を有し
ても良いシクロアルキル基、アルコキシアルキル基、ア
ルコキシ基、ハロゲン原子を示し、更にR2、R3は互いに
連結して芳香環を形成しても良い。又、Aは を示す。) (B)群 下記一般式〔II〕で表わされるアゾ系二色性色素。 (In the formula, R 1 to R 3 represent a hydrogen atom, an alkyl group, a cycloalkyl group which may have a substituent, an alkoxyalkyl group, an alkoxy group or a halogen atom, and R 2 and R 3 are linked to each other. To form an aromatic ring, and A is Indicates. ) Group (B) An azo type dichroic dye represented by the following general formula [II].
(式中、R4、R5は水素原子、アルキル基、置換基を有し
ても良いシクロアルキル基、アルコキシアルキル基、ア
ルコキシ基、ハロゲン原子を示し、R6〜R8は水素原子、
メチル基、メトキシ基、ハロゲン原子を示し、更にR7と
R8は互いに連結して芳香環を形成しても良い。) (C)群 下記一般式〔III〕及び一般式〔IV〕で表わされるアン
トラキノン系二色性色素。 (In the formula, R 4 and R 5 represent a hydrogen atom, an alkyl group, an optionally substituted cycloalkyl group, an alkoxyalkyl group, an alkoxy group, or a halogen atom, and R 6 to R 8 represent a hydrogen atom,
Indicates a methyl group, a methoxy group, a halogen atom, and further R 7
R 8 may be linked to each other to form an aromatic ring. ) (C) Group Anthraquinone-based dichroic dyes represented by the following general formulas [III] and [IV].
(式中、R9、R10は水素原子、アルキル基、置換基を有
しても良いシクロアルキル基、アルコキシアルキル基、
アルコキシ基、ハロゲン原子を示す。) (式中、R11、R12は水素原子、アルキル基、置換基を有
しても良いシクロアルキル基、アルコキシアルキル基、
アルコキシ基、ハロゲン原子を示す。) (D)群 下記一般式〔V〕及び〔VI〕で表わされるアントラキノ
ン系二色性色素。 (In the formula, R 9 and R 10 are a hydrogen atom, an alkyl group, an optionally substituted cycloalkyl group, an alkoxyalkyl group,
An alkoxy group and a halogen atom are shown. ) (In the formula, R 11 and R 12 are a hydrogen atom, an alkyl group, a cycloalkyl group which may have a substituent, an alkoxyalkyl group,
An alkoxy group and a halogen atom are shown. ) Group (D) Anthraquinone type dichroic dye represented by the following general formulas [V] and [VI].
(式中、R13は水素原子、アルキル基、置換基を有して
も良いシクロアルキル基、アルコキシアルキル基、アル
コキシ基、ハロゲン原子を示す。) (式中、R14、R15は水素原子、アルキル基、置換基を有
しても良いシクロアルキル基、アルコキシアルキル基、
アルコキシ基、ハロゲン原子を示す。) 本発明を詳細に説明すれば、R1〜R5、R9〜R15としては
水素原子、メチル基、エチル基、プロピル基、ブチル
基、ペンチル基、ヘキシル基、オクチル基、ノニル基、
ドデシル基等の直鎖状又は分枝状のアルキル基;置換基
を有していてもよいシクロアルキル基、例えばプロピル
シクロヘキシル基、ブチルシクロヘキシル基、ペンチル
シクロヘキシル基、ヘキシルシクロヘキシル基、オクチ
ルシクロヘキシル基等の直鎖状又は分枝状のアルキル基
等の置換基を有してもよいシクロアルキル基;メトキシ
メチル基、ブトキシメチル基、エトキシエチル基、ブト
キシエチル基等の直鎖状又は分枝状のアルコキシアルキ
ル基;メトキシ基、エトキシ基、プロポキシ基、ブトキ
シ基、ペントキシ基、オクトキシ基等の直鎖状又は分枝
状のアルコキシ基;フッ素原子、塩素原子、臭素原子等
のハロゲン原子が挙げられ、或いはR2とR3は互いに連結
して芳香環を形成しても良い。 (In the formula, R 13 represents a hydrogen atom, an alkyl group, an optionally substituted cycloalkyl group, an alkoxyalkyl group, an alkoxy group, or a halogen atom.) (In the formula, R 14 and R 15 are a hydrogen atom, an alkyl group, a cycloalkyl group which may have a substituent, an alkoxyalkyl group,
An alkoxy group and a halogen atom are shown. ) Explaining the present invention in detail, as R 1 to R 5 and R 9 to R 15 , a hydrogen atom, a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, an octyl group, a nonyl group,
A linear or branched alkyl group such as dodecyl group; a cycloalkyl group which may have a substituent, for example, propylcyclohexyl group, butylcyclohexyl group, pentylcyclohexyl group, hexylcyclohexyl group, octylcyclohexyl group, etc. A cycloalkyl group which may have a substituent such as a linear or branched alkyl group; a linear or branched alkoxy such as a methoxymethyl group, a butoxymethyl group, an ethoxyethyl group or a butoxyethyl group An alkyl group; a linear or branched alkoxy group such as a methoxy group, an ethoxy group, a propoxy group, a butoxy group, a pentoxy group and an octoxy group; and a halogen atom such as a fluorine atom, a chlorine atom and a bromine atom, or R 2 and R 3 may combine with each other to form an aromatic ring.
R6〜R8としては、水素原子、メチル基、メトキシ基、フ
ッ素原子、塩素原子、臭素原子等のハロゲン原子が挙げ
られ、或いはR7とR8は互いに連結して芳香環を形成して
も良い。Examples of R 6 to R 8 include a hydrogen atom, a methyl group, a methoxy group, a fluorine atom, a chlorine atom, a halogen atom such as a bromine atom, or R 7 and R 8 are linked to each other to form an aromatic ring. Is also good.
本発明に用いられる液晶物質としては下記一般式 (式中、R16及びR17はアルキル基、アルコキシアルキル
基、アルコキシ基、アルキルフェニル基、アルコキシア
ルキルフェニル基、アルコキシフェニル基、アルキルシ
クロヘキシル基、アルコキシアルキルシクロヘキシル
基、アルキルシクロヘキシルフェニル基、シアノフェニ
ル基、シアノ基、ハロゲン原子、アルコキシカルボニル
基、アルコキシアルコキシカルボニル基、アルキルフェ
ノキシカルボニル基、アルコキシアルキルフェノキシカ
ルボニル基、アルコキシフェノキシカルボニル基、アル
キルシクロヘキシルオキシカルボニル基、アルキルシク
ロヘキシルフェノキシカルボニル基、シアノフェノキシ
カルボニル基、ハロゲンフェノキシカルボニル基、アル
キルフェニルアルキル基、アルコキシアルキルフェニル
アルキル基、アルコキシフェニルアルキル基、アルキル
シクロヘキシルアルキル基、アルコキシアルコキシシク
ロヘキシルアルキル基、アルキルシクロヘキシルフェニ
ルアルキル基、シアノフェニルアルキル基を示し、アル
キル鎖、アルコキシ鎖中に光学活性中心を有しても良
い。又、R16及びR17中のフェニル基、又はフェノキシ基
は、更にフッ素原子、塩素原子等のハロゲン原子で置換
されていてもよい。又、Xは水素原子、フッ素原子もし
くは、塩素原子を表わす。) で表わされる化合物の単体あるいはこれらの混合物など
の液晶物質が挙げられる。The liquid crystal substance used in the present invention has the following general formula (In the formula, R 16 and R 17 are an alkyl group, an alkoxyalkyl group, an alkoxy group, an alkylphenyl group, an alkoxyalkylphenyl group, an alkoxyphenyl group, an alkylcyclohexyl group, an alkoxyalkylcyclohexyl group, an alkylcyclohexylphenyl group, and a cyanophenyl group. , Cyano group, halogen atom, alkoxycarbonyl group, alkoxyalkoxycarbonyl group, alkylphenoxycarbonyl group, alkoxyalkylphenoxycarbonyl group, alkoxyphenoxycarbonyl group, alkylcyclohexyloxycarbonyl group, alkylcyclohexylphenoxycarbonyl group, cyanophenoxycarbonyl group, halogen Phenoxycarbonyl group, alkylphenylalkyl group, alkoxyalkylphenylalkyl group, alcohol Shi phenylalkyl group, an alkyl cyclohexyl group, alkoxyalkoxy cyclohexyl group, an alkyl phenyl alkyl group, a cyanophenyl group, the alkyl chain may have an optically active center in the alkoxy chain. Moreover, R 16 And the phenyl group or phenoxy group in R 17 may be further substituted with a halogen atom such as a fluorine atom and a chlorine atom, and X represents a hydrogen atom, a fluorine atom or a chlorine atom. Liquid crystal substances such as a simple substance of a compound to be used or a mixture thereof are included.
また、前記の液晶混合物はコレステリルノナノエートの
ような光学活性物質、紫外線吸収剤、酸化防止剤などの
添加剤を含有していても良い。Further, the liquid crystal mixture may contain additives such as an optically active substance such as cholesteryl nonanoate, an ultraviolet absorber and an antioxidant.
本発明の液晶組成物は、前記構造式〔I〕〜〔VI〕で示
される色素を前記の液晶物質に溶解させることにより、
容易に調整することが出来る。The liquid crystal composition of the present invention is prepared by dissolving the dye represented by the structural formulas [I] to [VI] in the liquid crystal substance.
It can be easily adjusted.
このようにして調整された液晶組成物を、少なくとも一
方が透明な電極基板間に担持させることによりゲストホ
スト効果を応用した液晶表示素子を構成することが出来
る。By supporting the liquid crystal composition prepared in this way between the electrode substrates, at least one of which is transparent, a liquid crystal display device applying the guest-host effect can be constructed.
これは松本正一、角田市良“液晶の最新技術”工業調査
会、34(1983)、J.L.Fergason,SID 85 Digest,68(198
5)等に示される方法により行うことができる。This is Shoichi Matsumoto, Ryo Tsunoda “Latest LCD Technology” Industrial Research Committee, 34 (1983), JLFergason, SID 85 Digest, 68 (198).
It can be carried out by the method shown in 5).
(実施例) 以下に本発明を実施例により具体的に説明するが、本発
明はその要旨を超えない限り、以下の実施例に制約され
るものではない。(Examples) Hereinafter, the present invention will be specifically described with reference to Examples, but the present invention is not limited to the following Examples as long as the gist thereof is not exceeded.
なお、以下の実施例に於て二色性の良否は次式から求め
られる色素化合物のオーダー・パラメーター(S)によ
り評価した。In the following examples, the quality of dichroism was evaluated by the order parameter (S) of the dye compound obtained from the following formula.
ここでA及びA⊥は、それぞれ液晶の配向方向に対し
て平行および垂直に偏光した光に対する色素の吸光度で
ある。 Here, A and A⊥ are the absorbances of the dye with respect to light polarized parallel and perpendicular to the alignment direction of the liquid crystal, respectively.
オーダー・パラメーター(S)は、具体的にはゲスト・
ホスト型液晶表示素子の表示コントラストを示す値であ
り、この値が理論上1に近づく程、白ぬけ部分の残色度
が減少し、明るくコントラストの大きい鮮明な表示が可
能となる。The order parameter (S) is
It is a value indicating the display contrast of the host type liquid crystal display element, and as this value theoretically approaches 1, the residual color level in the non-white areas decreases, and bright and clear display with large contrast becomes possible.
また、以下の実施例に使用した色素は、まとめて第1表
に記載した。In addition, the dyes used in the following examples are collectively shown in Table 1.
実施例1 下記構造式で示される色素〔I−1〕1.00g、 下記構造式で示される色素〔II−1〕2.20g、 下記構造式で示される色素〔III−1〕2.60g、 下記構造式で示される色素〔IV−1〕2.12g、 下記構造式で示される色素〔V−1〕2.65g、 及び下記構造式で示される色素〔VI−1〕2.50g を商品名ZLI−1565(E.MERCK社製造)として市販されて
いるフェニルシクロヘキサン系化合物を主成分とする液
晶混合物100gに溶解させて液晶組成物−Iを調整した。 Example 1 1.00 g of a dye [I-1] represented by the following structural formula, 2.20 g of a dye [II-1] represented by the following structural formula, 2.60 g of a dye [III-1] represented by the following structural formula, 2.12 g of a dye [IV-1] represented by the following structural formula, 2.65 g of a dye [V-1] represented by the following structural formula, And 2.50 g of the dye [VI-1] represented by the following structural formula Was dissolved in 100 g of a liquid crystal mixture containing a phenylcyclohexane compound as a main component, which is commercially available under the trade name ZLI-1565 (manufactured by E.MERCK) to prepare a liquid crystal composition-I.
これを、ポリイミド系樹脂を塗布硬化後、ラビングして
ホモジニアス配向処理された透明電極付きガラス板から
なり、該配向処理面を対向させるように構成されたギャ
ブ9μmのセルに封入し液晶表示素子を作成した。A liquid crystal display device was obtained by encapsulating this in a cell of 9 μm gab which was composed of a glass plate with a transparent electrode which was subjected to a homogeneous alignment treatment by rubbing a polyimide resin after coating and curing, and the alignment treated surfaces were opposed to each other. Created.
この液晶表示素子のオーダーパラメーター(S)を前述
の式を用いて算出した結果、632nm、580nm、535nm及び4
70nmにおいて、それぞれ0.75、0.76、0.73及び0.76であ
った。The order parameter (S) of this liquid crystal display device was calculated using the above formula, and the results were 632 nm, 580 nm, 535 nm and 4
At 70 nm were 0.75, 0.76, 0.73 and 0.76 respectively.
液晶組成物−I及びこれを封入したセルを−20℃で1000
時間放置した結果、色素の析出などの異常は特に認めら
れなかった。The liquid crystal composition-I and the cell in which the liquid crystal composition was enclosed were stored at -20 ° C for 1000
As a result of being left for a time, no particular abnormality such as pigment deposition was observed.
また、液晶組成物−Iを封入したセルを用いてフェード
メーター(カーボンアーク光源)にて耐光性テストを実
施した結果、100時間後の色相変化:△E(L*a*b
*法)は1.0以下であり、電流値の増加率:I/I0(印加電
圧:5V32Hz)は4.5倍であった。Further, a light resistance test was carried out with a fade meter (carbon arc light source) using a cell in which the liquid crystal composition-I was enclosed. As a result, a hue change after 100 hours: ΔE (L * a * b
* Method) was 1.0 or less, and the rate of increase in current value: I / I 0 (applied voltage: 5V 32Hz) was 4.5 times.
(比較例)液晶組成物−Iにおいて色素〔I−1〕を除
き色素〔II−1〕を3.00g使用した以外は同様にして調
整した液晶組成物にて耐光性テストを実施した結果、10
0時間後の色相変化:△E(L*a*b*法)は1.5であ
り、電流値の増加率:I/I0(印加電圧:5V32Hz)は6.0倍
であった。Comparative Example A liquid crystal composition prepared in the same manner except that 3.00 g of the dye [II-1] was used except the dye [I-1] in the liquid crystal composition-I was subjected to a light resistance test.
Hue change after 0 hour: ΔE (L * a * b * method) was 1.5, and current rate of increase: I / I 0 (applied voltage: 5V32Hz) was 6.0 times.
実施例2 下記の二色性色素を商品名9170(チッソ社製造)として
市販されているフェニルシクロヘキサン系化合物を主成
分とする液晶混合物100gに溶解させて液晶組成物−IIを
調整した。Example 2 A liquid crystal composition-II was prepared by dissolving the following dichroic dye in 100 g of a liquid crystal mixture containing a phenylcyclohexane compound as a main component, which is commercially available under the trade name 9170 (manufactured by Chisso Corporation).
色素〔I−1〕 1.00g 〔II−1〕 2.20g 〔III−1〕 2.20g 〔III−2〕 0.45g 〔IV−1〕 0.45g 〔IV−2〕 0.90g 〔IV−3〕 0.94g 〔V−1〕 2.50g 〔VI−1〕 1.25g 〔VI−2〕 1.30g これをポリイミド系樹脂を塗布硬化後、ラビングしてホ
モジニアス配向処理された透明電極付きガラス板からな
り、該配向処理面を対向させるように構成されたギャプ
9μmのセルに封入し液晶表示素子を作成した。Dye [I-1] 1.00 g [II-1] 2.20 g [III-1] 2.20 g [III-2] 0.45 g [IV-1] 0.45 g [IV-2] 0.90 g [IV-3] 0.94 g [V-1] 2.50 g [VI-1] 1.25 g [VI-2] 1.30 g This is composed of a glass plate with a transparent electrode that is homogenized by rubbing after coating and curing a polyimide resin. A liquid crystal display element was prepared by enclosing the cells in a cell having a gap of 9 μm configured to face each other.
この液晶表示素子のオーダーパラメーター(S)を前述
の式を用いて算出した結果、635nm、575nm及び470nmに
おいて、それぞれ0.75、0.75及び0.76であった。The order parameter (S) of this liquid crystal display device was calculated using the above formula, and as a result, it was 0.75, 0.75 and 0.76 at 635 nm, 575 nm and 470 nm, respectively.
液晶組成物−II及びこれを封入したセルを−20℃で1000
時間放置した結果、色素の析出などの異常は特に認めら
れなかった。Liquid crystal composition-II and the enclosed cell at 1000
As a result of being left for a time, no particular abnormality such as pigment deposition was observed.
また、液晶組成物−IIを封入したセルを用いてフェード
メーター(アーボンアーク光源)にて耐光性テストを実
施した結果、100時間後の色相変化:△E(L*a*b
*法)は0.7以下であり、電流値の増加率:I/I0(印加電
圧:5V32Hz)は3.0倍であった。Further, a light resistance test was carried out with a fade meter (arbon arc light source) using a cell in which the liquid crystal composition-II was enclosed. As a result, a hue change after 100 hours: ΔE (L * a * b
* Method) was 0.7 or less, and the rate of increase in current value: I / I 0 (applied voltage: 5V 32Hz) was 3.0 times.
(比較例)液晶組成物−IIにおいて色素〔I−1〕を除
き色素〔II−1〕を3.50gを使用した以外は同様にして
調整した液晶組成物にて耐光性テストを実施した結果、
100時間後の色相変化:△E(L*a*b*法)は1.5で
あり、電流値の増加率I/I0(印加電圧:5V32Hz)は5.0倍
であった。Comparative Example A liquid crystal composition prepared in the same manner except that the dye [II-1] was used in the liquid crystal composition-II except that the dye [II-1] was used in an amount of 3.50 g.
Hue change after 100 hours: ΔE (L * a * b * method) was 1.5, and current rate of increase I / I 0 (applied voltage: 5V32Hz) was 5.0 times.
実施例3 下記の二色性色素を商品名ZLI−1565(E.MERCK社製造)
として市販されているフェニルシクロヘキサン系化合物
を主成分とする液晶混合物に溶解させて液晶組成物−II
Iを調整した。Example 3 The following dichroic dye was used under the trade name ZLI-1565 (manufactured by E.MERCK).
As a liquid crystal composition containing a phenylcyclohexane-based compound as a main component
I adjusted.
色素〔I−1〕 0.55g 〔II−1〕 0.37g 〔II−2〕 0.39g 〔II−3〕 0.41g 〔III−1〕 0.65g 〔III−2〕 0.70g 〔IV−1〕 0.22g 〔IV−2〕 0.41g 〔IV−3〕 0.44g 〔V−1〕 0.53g 〔V−2〕 0.25g 〔V−3〕 0.55g 〔VI−1〕 0.75g 〔VI−2〕 0.64g これをポリイミド系樹脂を塗布硬化後、ラビングしてホ
モジニアス配向処理された透明電極付きガラス板からな
り、該配向処理面を対向させるように構成されたギャプ
9μmのセルに封入し液晶表示素子を作成した。Dye [I-1] 0.55g [II-1] 0.37g [II-2] 0.39g [II-3] 0.41g [III-1] 0.65g [III-2] 0.70g [IV-1] 0.22g [IV-2] 0.41g [IV-3] 0.44g [V-1] 0.53g [V-2] 0.25g [V-3] 0.55g [VI-1] 0.75g [VI-2] 0.64g Was coated with a polyimide resin and cured, and then rubbed to form a liquid crystal display device by enclosing in a cell with a gap of 9 μm, which is composed of a glass plate with a transparent electrode subjected to a homogeneous alignment treatment, and the alignment treatment surfaces face each other. .
この液晶表示素子のオーダーパラメーター(S)を前述
の式を用いて算出した結果、632nm、580nm、535nm及び4
70nmにおいて、それぞれ0.74、0.75、0.73及び0.76であ
った。The order parameter (S) of this liquid crystal display device was calculated using the above formula, and the results were 632 nm, 580 nm, 535 nm and 4
At 70 nm were 0.74, 0.75, 0.73 and 0.76 respectively.
液晶組成物−III及びこれを封入したセルを−20℃で100
0時間放置した結果、色素の析出などの異常は特に認め
られなかった。The liquid crystal composition-III and the cell in which the liquid crystal composition was enclosed were stored at -20 ° C for 100
As a result of standing for 0 hour, no particular abnormality such as pigment deposition was observed.
また、液晶組成物−IIIを封入したセルを用いてフェー
ドメーター(カーボンアーク光源)にて耐光性テストを
実施した結果、100時間後の色相変化:△E(L*a*
b*法)は0.8以下であり、電流値の増加率:I/I0(印加
電圧:5V32Hz)は3.5倍であった。Further, as a result of performing a light resistance test with a fade meter (carbon arc light source) using a cell in which the liquid crystal composition-III is enclosed, a hue change after 100 hours: ΔE (L * a *
The b * method) was 0.8 or less, and the rate of increase in current value: I / I 0 (applied voltage: 5V 32Hz) was 3.5 times.
(比較例)液晶組成物−IIIにおいて色素〔I−1〕を
除き色素〔II−1〕を0.55g、〔II−2〕を0.58g、〔II
−3〕を0.62gを使用した以外は同様にして調整した液
晶組成物にて耐光性テストを実施した結果、100時間後
の色相変化:△E(L*a*b*法)は1.2であり、電
流値の増加率:I/I0(印加電圧:5V32Hz)は5.5倍であっ
た。(Comparative Example) In the liquid crystal composition-III, except for the dye [I-1], 0.55 g of the dye [II-1], 0.58 g of the [II-2], and [II
[3] was subjected to a light resistance test in the same manner except that 0.62 g was used, and as a result, a hue change after 100 hours: ΔE (L * a * b * method) was 1.2. The increase rate of the current value: I / I 0 (applied voltage: 5V32Hz) was 5.5 times.
実施例4 下記の二色性色素を商品名ZLI−1565(E.MERCK社製造)
として市販されているフェニルシクロヘキサン系化合物
を主成分とする液晶混合物100gに溶解させて液晶組成物
−IVを調整した。Example 4 The following dichroic dye was used under the trade name ZLI-1565 (manufactured by E.MERCK).
Was dissolved in 100 g of a liquid crystal mixture containing a phenylcyclohexane compound as a main component, to prepare a liquid crystal composition-IV.
色素〔I−1〕 0.60g 〔II−1〕 0.37g 〔II−2〕 0.39g 〔II−3〕 0.41g 〔III−1〕 0.65g 〔III−2〕 0.70g 〔IV−1〕 0.22g 〔IV−2〕 0.41g 〔IV−3〕 0.44g 〔V−1〕 0.53g 〔V−2〕 0.25g 〔V−3〕 0.55g 〔VI−1〕 0.75g 〔VI−2〕 0.64g これをポリイミド系樹脂を塗布硬化後、ラビングしてホ
モジニアス配向処理された透明電極付きガラス板からな
り、該配向処理面を対向させるように構成されたギャプ
9μmのセルに封入し液晶表示素子を作成した。Dye [I-1] 0.60 g [II-1] 0.37 g [II-2] 0.39 g [II-3] 0.41 g [III-1] 0.65 g [III-2] 0.70 g [IV-1] 0.22 g [IV-2] 0.41g [IV-3] 0.44g [V-1] 0.53g [V-2] 0.25g [V-3] 0.55g [VI-1] 0.75g [VI-2] 0.64g Was coated with a polyimide resin and cured, and then rubbed to form a liquid crystal display device by enclosing in a cell with a gap of 9 μm, which is composed of a glass plate with a transparent electrode subjected to a homogeneous alignment treatment, and the alignment treatment surfaces face each other. .
この液晶表示素子のオーダーパラメーター(S)を前述
の式を用いて算出した結果、632nm、580nm、535nm及び4
65nmにおいて、それぞれ0.74、0.75、0.73及び0.75であ
った。The order parameter (S) of this liquid crystal display device was calculated using the above formula, and the results were 632 nm, 580 nm, 535 nm and 4
At 65 nm they were 0.74, 0.75, 0.73 and 0.75 respectively.
液晶組成物−IV及びこれを封入したセルを−20℃で1000
時間放置した結果、色素の析出などの異常は特に認めら
れなかった。Liquid crystal composition-IV and the enclosed cell at 1000
As a result of being left for a time, no particular abnormality such as pigment deposition was observed.
また、液晶組成物−IVを封入したセルを用いてフェード
メーター(カーボンアーク光源)にて耐光性テストを実
施した結果、100時間後の色相変化:△E(L*a*b
*法)は0.7以下であり、電流値の増加率:I/I0(印加電
圧:5V32Hz)は3.0倍であった。Further, a light resistance test was carried out with a fade meter (carbon arc light source) using a cell in which the liquid crystal composition-IV was enclosed. As a result, a hue change after 100 hours: ΔE (L * a * b
* Method) was 0.7 or less, and the rate of increase in current value: I / I 0 (applied voltage: 5V 32Hz) was 3.0 times.
(比較例)液晶組成物−IVにおいて色素〔I−1〕を除
き色素〔II−1〕を0.58g、〔II−2〕を0.58g、〔II−
3〕を0.64gを使用した以外は同様にして調整した液晶
組成物にて耐光性テストを実施した結果、100時間後の
色相変化:△E(L*a*b*法)は1.2であり、電流
値の増加率:I/I0(印加電圧:5V32Hz)は5.5倍であっ
た。(Comparative Example) 0.58 g of dye [II-1], 0.58 g of [II-2], and [II-
As a result of conducting a light resistance test with a liquid crystal composition prepared in the same manner except that 0.64 g of [3] was used, the hue change after 100 hours: ΔE (L * a * b * method) was 1.2. The rate of increase in current value: I / I 0 (applied voltage: 5V32Hz) was 5.5 times.
実施例5 下記の二色性色素を商品名9170(チッソ社製造)として
市販されているフェニルシクロヘキサン系化合物を主成
分とする液晶混合物100gに溶解させて液晶組成物−Vを
調整した。Example 5 A liquid crystal composition-V was prepared by dissolving the following dichroic dye in 100 g of a liquid crystal mixture containing a phenylcyclohexane compound as a main component, which is commercially available under the trade name 9170 (manufactured by Chisso Corporation).
色素〔I−2〕 1.20g 〔II−1〕 2.20g 〔III−1〕 2.60g 〔IV−1〕 2.12g 〔V−1〕 2.65g 〔VI−1〕 2.50g これをポリイミド系樹脂を塗布硬化後、ラビングしてホ
モジニアス配向処理された透明電極付きガラス板からな
り、該配向処理面を対向させるように構成されたギャプ
9μmのセルに封入し液晶表示素子を作成した。Dye [I-2] 1.20 g [II-1] 2.20 g [III-1] 2.60 g [IV-1] 2.12 g [V-1] 2.65 g [VI-1] 2.50 g This is coated with a polyimide resin After curing, it was rubbed and sealed in a cell having a gap of 9 μm, which was composed of a glass plate with a transparent electrode that was subjected to a homogeneous alignment treatment, and the alignment-treated surfaces were opposed to each other to prepare a liquid crystal display element.
この液晶表示素子のオーダーパラメーター(S)を前述
の式を用いて算出した結果、635nm、575nm及び465nmに
おいて、それぞれ0.75、0.75及び0.76であった。As a result of calculating the order parameter (S) of this liquid crystal display device using the above-mentioned formula, it was 0.75, 0.75 and 0.76 at 635 nm, 575 nm and 465 nm, respectively.
液晶組成物−V及びこれを封入したセルを−20℃で1000
時間放置した結果、色素の析出などの異常は特に認めら
れなかった。The liquid crystal composition -V and the cell in which it is enclosed are stored at -20 ° C for 1000
As a result of being left for a time, no particular abnormality such as pigment deposition was observed.
また、液晶組成物−Vを封入したセルを用いてフェード
メーター(カーボンアーク光源)にて耐光性テストを実
施した結果、100時間後の色相変化:△E(L*a*b
*法)は0.8以下であり、電流値の増加率:I/I0(印加電
圧:5V32Hz)は3.3倍であった。Further, a light resistance test was carried out with a fade meter (carbon arc light source) using a cell in which the liquid crystal composition-V was enclosed. As a result, a hue change after 100 hours: ΔE (L * a * b
* Method) was 0.8 or less, and the rate of increase in current value: I / I 0 (applied voltage: 5V 32Hz) was 3.3 times.
(比較例)液晶組成物−Vにおいて色素〔I−1〕を除
き色素〔II−1〕を3.50gを使用した以外は同様にして
調整した液晶組成物にて耐光性テストを実施した結果、
100時間後の色相変化:△E(L*a*b*法)は1.5で
あり、電流値の増加率:I/I0(印加電圧:5V32Hz)は5.0
倍であった。Comparative Example A liquid crystal composition prepared in the same manner except that the dye [II-1] was used in the liquid crystal composition-V except that the dye [II-1] was used in an amount of 3.50 g.
Hue change after 100 hours: ΔE (L * a * b * method) is 1.5, current rate of increase: I / I 0 (applied voltage: 5V 32Hz) is 5.0
It was double.
実施例6 下記の二色性色素を商品名ZLI−1565(E.MERCK社製造)
として市販されているフェニルシクロヘキサン系化合物
を主成分とする液晶混合物100gに溶解させて液晶組成物
−VIを調整した。Example 6 The following dichroic dye was used under the trade name ZLI-1565 (manufactured by E.MERCK).
Was dissolved in 100 g of a liquid crystal mixture containing a phenylcyclohexane-based compound as a main component, to prepare a liquid crystal composition-VI.
色素〔I−3〕 0.60g 〔II−1〕 0.33g 〔II−2〕 0.34g 〔II−3〕 0.42g 〔III−1〕 0.66g 〔III−2〕 0.72g 〔IV−1〕 0.25g 〔IV−2〕 0.40g 〔IV−3〕 0.43g 〔V−1〕 0.55g 〔V−2〕 0.25g 〔V−3〕 0.58g 〔VI−1〕 0.75g 〔VI−2〕 0.64g これをポリイミド系樹脂を塗布硬化後、ラビングしてホ
モジニアス配向処理された透明電極付きガラス板からな
り、該配向処理面を対向させるように構成されたギャプ
9μmのセルに封入し液晶表示素子を作成した。Dye [I-3] 0.60 g [II-1] 0.33 g [II-2] 0.34 g [II-3] 0.42 g [III-1] 0.66 g [III-2] 0.72 g [IV-1] 0.25 g [IV-2] 0.40g [IV-3] 0.43g [V-1] 0.55g [V-2] 0.25g [V-3] 0.58g [VI-1] 0.75g [VI-2] 0.64g Was coated with a polyimide resin and cured, and then rubbed to form a liquid crystal display device by enclosing in a cell with a gap of 9 μm, which is composed of a glass plate with a transparent electrode subjected to a homogeneous alignment treatment, and the alignment treatment surfaces face each other. .
この液晶表示素子のオーダーパラメーター(S)を前述
の式を用いて算出した結果、632nm、580nm、535nm及び4
67nmにおいて、それぞれ0.74、0.75、0.74及び0.74であ
った。The order parameter (S) of this liquid crystal display device was calculated using the above formula, and the results were 632 nm, 580 nm, 535 nm and 4
At 67 nm were 0.74, 0.75, 0.74 and 0.74 respectively.
液晶組成物−VI及びこれを封入したセルを−20℃で1000
時間放置した結果、色素の析出などの異常は特に認めら
れなかった。The liquid crystal composition-VI and the cell in which it is enclosed are stored at -20 ° C for 1000
As a result of being left for a time, no particular abnormality such as pigment deposition was observed.
また、液晶組成物−VIを封入したセルを用いてフェード
メーター(カーボンアーク光源)にて耐光性テストを実
施した結果、100時間後の色相変化:△E(L*a*b
*法)は0.8以下であり、電流値の増加率:I/I0(印加電
圧:5V32Hz)は3.3倍であった。In addition, a light resistance test was conducted with a fade meter (carbon arc light source) using a cell in which the liquid crystal composition-VI was enclosed. As a result, a hue change after 100 hours: ΔE (L * a * b
* Method) was 0.8 or less, and the rate of increase in current value: I / I 0 (applied voltage: 5V 32Hz) was 3.3 times.
(比較例)液晶組成物−VIにおいて色素〔I−1〕を除
き色素〔II−1〕を0.55g、〔II−2〕を0.58g、〔II−
3〕を0.62gを使用した以外は同様にして調整した液晶
組成物にて耐光性テストを実施した結果、100時間後の
色相変化:△E(L*a*b*法)は1.2であり、電流
値の増加率:I/I0(印加電圧:5V32Hz)は5.5倍であっ
た。Comparative Example 0.55 g of the dye [II-1], 0.58 g of the [II-2], and [II-
As a result of a light resistance test conducted on a liquid crystal composition prepared in the same manner except that 0.62 g of [3] was used, the hue change after 100 hours: ΔE (L * a * b * method) was 1.2. The rate of increase in current value: I / I 0 (applied voltage: 5V32Hz) was 5.5 times.
実施例7 下記の二色性色素を商品名ZLI−1565(E.MERCK社製造)
として市販されているフェニルシクロヘキサン系化合物
を主成分とする液晶組成物100gに溶解させて液晶組成物
VIIを調整した。Example 7 The following dichroic dye was used under the trade name ZLI-1565 (manufactured by E.MERCK).
As a liquid crystal composition containing 100 g of a phenylcyclohexane-based compound as a main component
Adjusted VII.
色素〔I−4〕 0.70g 〔II−1〕 0.33g 〔II−2〕 0.35g 〔II−3〕 0.39g 〔III−1〕 0.67g 〔III−2〕 0.73g 〔IV−1〕 0.22g 〔IV−2〕 0.41g 〔IV−3〕 0.44g 〔V−1〕 0.50g 〔V−2〕 0.23g 〔V−3〕 0.54g 〔VI−1〕 0.69g 〔VI−2〕 0.62g これをポリイミド系樹脂を塗布硬化後、ラビングしてホ
モジニアス配向処理された透明電極付きガラス板からな
り、該配向処理面を対向させるように構成されたギャプ
9μmのセルに封入し液晶表示素子を作成した。Dye [I-4] 0.70 g [II-1] 0.33 g [II-2] 0.35 g [II-3] 0.39 g [III-1] 0.67 g [III-2] 0.73 g [IV-1] 0.22 g [IV-2] 0.41g [IV-3] 0.44g [V-1] 0.50g [V-2] 0.23g [V-3] 0.54g [VI-1] 0.69g [VI-2] 0.62g Was coated with a polyimide resin and cured, and then rubbed to form a liquid crystal display device by enclosing in a cell with a gap of 9 μm, which is composed of a glass plate with a transparent electrode subjected to a homogeneous alignment treatment, and the alignment treatment surfaces face each other. .
この液晶表示素子のオーダーパラメーター(S)を前述
の式を用いて算出した結果、632nm、580nm、535nm及び4
65nmにおいて、それぞれ0.74、0.75、0.73及び0.74であ
った。The order parameter (S) of this liquid crystal display device was calculated using the above formula, and the results were 632 nm, 580 nm, 535 nm and 4
At 65 nm they were 0.74, 0.75, 0.73 and 0.74 respectively.
液晶組成物−VII及びこれを封入したセルを−20℃で100
0時間放置した結果、色素の析出などの異常は特に認め
られなかった。Liquid crystal composition-VII and the cell in which it was enclosed are
As a result of standing for 0 hour, no particular abnormality such as pigment deposition was observed.
また、液晶組成物−VIIを封入したセルを用いてフェー
ドメーター(カーボンアーク光源)にて耐光性テストを
実施した結果、100時間後の色相変化:△E(L*a*
b*法)は0.7以下であり、電流値の増加率:I/I0(印加
電圧:5V32Hz)は3.2倍であった。Further, a light resistance test was carried out with a fade meter (carbon arc light source) using a cell in which the liquid crystal composition-VII was enclosed. As a result, a hue change after 100 hours: ΔE (L * a *
The b * method) was 0.7 or less, and the rate of increase in current value: I / I 0 (applied voltage: 5V 32Hz) was 3.2 times.
(比較例)液晶組成物−VIIにおいて色素〔I−1〕を
除き色素〔II−1〕を0.58g、〔II−2〕を0.58g、〔II
−3〕を0.64gを使用した以外は同様にして調整した液
晶組成物にて耐光性テストを実施した結果、100時間後
の色相変化:△E(L*a*b*法)は1.2であり、電
流値の増加率:I/I0(印加電圧:5V32Hz)は5.5倍であっ
た。Comparative Example 0.58 g of the dye [II-1], 0.58 g of the [II-2], and [II] except the dye [I-1] in the liquid crystal composition-VII.
[3] was subjected to a light resistance test in the same manner except that 0.64 g was used, and as a result, a hue change after 100 hours: ΔE (L * a * b * method) was 1.2. The increase rate of the current value: I / I 0 (applied voltage: 5V32Hz) was 5.5 times.
実施例8 下記の二色性色素を商品名ZLI−1565(E.MERCK社製造)
として市販されているフェニルシクロヘキサン系化合物
を主成分とする液晶混合物100gに溶解させて液晶組成物
VIIIを調整した。Example 8 The following dichroic dye was used under the trade name ZLI-1565 (manufactured by E.MERCK).
A liquid crystal composition prepared by dissolving 100 g of a liquid crystal mixture containing a phenylcyclohexane-based compound as a main component
Adjusted VIII.
色素〔I−5〕 0.70g 〔II−1〕 0.34g 〔II−2〕 0.38g 〔II−3〕 0.43g 〔III−1〕 0.63g 〔III−2〕 0.68g 〔IV−1〕 0.24g 〔IV−2〕 0.44g 〔IV−3〕 0.46g 〔V−1〕 0.50g 〔V−2〕 0.23g 〔V−3〕 0.51g 〔VI−1〕 0.77g 〔VI−2〕 0.61g これをポリイミド系樹脂を塗布硬化後、ラビングしてホ
モジニアス配向処理された透明電極付きガラス板からな
り、該配向処理面を対向させるように構成されたギャプ
9μmのセルに封入し液晶表示素子を作成した。Dye [I-5] 0.70 g [II-1] 0.34 g [II-2] 0.38 g [II-3] 0.43 g [III-1] 0.63 g [III-2] 0.68 g [IV-1] 0.24 g [IV-2] 0.44g [IV-3] 0.46g [V-1] 0.50g [V-2] 0.23g [V-3] 0.51g [VI-1] 0.77g [VI-2] 0.61g Was coated with a polyimide resin and cured, and then rubbed to form a liquid crystal display device by enclosing in a cell with a gap of 9 μm, which is composed of a glass plate with a transparent electrode subjected to a homogeneous alignment treatment, and the alignment treatment surfaces face each other. .
この液晶表示素子のオーダーパラメーター(S)を前述
の式を用いて算出した結果、632nm、580nm、535nm及び4
65nmにおいて、それぞれ0.74、0.75、0.73及び0.76であ
った。The order parameter (S) of this liquid crystal display device was calculated using the above formula, and the results were 632 nm, 580 nm, 535 nm and 4
At 65 nm were 0.74, 0.75, 0.73 and 0.76 respectively.
液晶組成物−VIII及びこれを封入したセルを−20℃で10
00時間放置した結果、色素の析出などの異常は特に認め
られなかった。Liquid crystal composition-VIII and the cell in which it was enclosed were stored at -20 ° C for 10
As a result of leaving it for 00 hours, no particular abnormality such as precipitation of dye was observed.
また、液晶組成物−VIIIを封入したセルを用いてフェー
ドメーター(カーボンアーク光源)にて耐光性テストを
実施した結果、100時間後の色相変化:△E(L*a*
b*法)は0.7以下であり、電流値の増加率:I/I0(印加
電圧:5V32Hz)は3.0倍であった。Further, a light resistance test was carried out with a fade meter (carbon arc light source) using a cell in which the liquid crystal composition-VIII was enclosed. As a result, a hue change after 100 hours: ΔE (L * a *
b * method) was 0.7 or less, and the rate of increase in current value: I / I 0 (applied voltage: 5V 32Hz) was 3.0 times.
(比較例)液晶組成物−VIIIにおいて色素〔I−1〕を
除き色素〔II−1〕を0.58g、〔II−2〕を0.58g、〔II
−3〕を0.64gを使用した以外は同様にして調整した液
晶組成物にて耐光性テストを実施した結果、100時間後
の色相変化:△E(L*a*b*法)は1.2であり、電
流値の増加率:I/I0(印加電圧:5V32Hz)は5.5倍であっ
た。(Comparative Example) Except for the dye [I-1] in the liquid crystal composition-VIII, 0.58 g of the dye [II-1], 0.58 g of the [II-2], and [II
[3] was subjected to a light resistance test in the same manner except that 0.64 g was used, and as a result, a hue change after 100 hours: ΔE (L * a * b * method) was 1.2. The increase rate of the current value: I / I 0 (applied voltage: 5V32Hz) was 5.5 times.
(発明の効果) 本発明の液晶組成物は、コントラスト、遮光性、低温で
の安定性に優れ、該液晶組成物を使用した液晶表示素子
は高コントラスト、高遮光性、長い寿命、低温での安定
性及び多彩な色相を有し、特に400nm以下の波長の光を
カットする紫外線カットフィルターを使用することによ
って耐光性にも優れ、カラー液晶表示素子として従来の
ものにくらべ非常に有用である。(Effect of the invention) The liquid crystal composition of the present invention is excellent in contrast, light-shielding property and stability at low temperature, and a liquid crystal display device using the liquid crystal composition has high contrast, high light-shielding property, long life, and low temperature. It has stability and various hues, and is excellent in light resistance particularly by using an ultraviolet cut filter that cuts light having a wavelength of 400 nm or less, and is very useful as a color liquid crystal display device compared with the conventional ones.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 // G02F 1/13 500 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location // G02F 1/13 500
Claims (2)
(C)群及び(D)群で示される二色性色素を各々の群
から少なくとも一種ずつ含むことを特徴とする液晶組成
物。 (A)群 下記一般式〔I〕で表わされるアントラキノン系二色性
色素。 (式中、R1〜R3は水素原子、アルキル基、置換基を有し
ていても良いシクロアルキル基、アルコキシアルキル
基、アルコキシ基、ハロゲン原子を示し、更にR2、R3は
互いに連結して芳香環を形成しても良い。又、Aは を示す。) (B)群 下記一般式〔II〕で表わされるアゾ系二色性色素。 (式中、R4、R5は水素原子、アルキル基、置換基を有し
ても良いシクロアルキル基、アルコキシアルキル基、ア
ルコキシ基、ハロゲン原子を示し、R6〜R8は水素原子、
メチル基、メトキシ基、ハロゲン原子を示し、更にR7と
R8は互いに連結して芳香環を形成しても良い。) (C)群 下記一般式〔III〕及び一般式〔IV〕で表わされるアン
トラキノン系二色性色素。 (式中、R9、R10は水素原子、アルキル基、置換基を有
しても良いシクロアルキル基、アルコキシアルキル基、
アルコキシ基、ハロゲン原子を示す。) (式中、R11、R12は水素原子、アルキル基、置換基を有
しても良いシクロアルキル基、アルコキシアルキル基、
アルコキシ基、ハロゲン原子を示す。) (D)群 下記一般式〔V〕及び〔VI〕で表わされるアントラキノ
ン系二色性色素。 (式中、R13は水素原子、アルキル基、置換基を有して
も良いシクロアルキル基、アルコキシアルキル基、アル
コキシ基、ハロゲン原子を示す。) (式中、R14、R15は水素原子、アルキル基、置換基を有
しても良いシクロアルキル基、アルコキシアルキル基、
アルコキシ基、ハロゲン原子を示す。)1. A liquid crystal composition comprising the following groups (A) and (B):
A liquid crystal composition comprising at least one dichroic dye represented by groups (C) and (D) from each group. Group (A) Anthraquinone type dichroic dye represented by the following general formula [I]. (In the formula, R 1 to R 3 represent a hydrogen atom, an alkyl group, an optionally substituted cycloalkyl group, an alkoxyalkyl group, an alkoxy group, or a halogen atom, and R 2 and R 3 are linked to each other. To form an aromatic ring, and A is Indicates. ) Group (B) An azo type dichroic dye represented by the following general formula [II]. (In the formula, R 4 and R 5 represent a hydrogen atom, an alkyl group, an optionally substituted cycloalkyl group, an alkoxyalkyl group, an alkoxy group, or a halogen atom, and R 6 to R 8 represent a hydrogen atom,
Indicates a methyl group, a methoxy group, a halogen atom, and further R 7
R 8 may be linked to each other to form an aromatic ring. ) (C) Group Anthraquinone-based dichroic dyes represented by the following general formulas [III] and [IV]. (In the formula, R 9 and R 10 are a hydrogen atom, an alkyl group, an optionally substituted cycloalkyl group, an alkoxyalkyl group,
An alkoxy group and a halogen atom are shown. ) (In the formula, R 11 and R 12 are a hydrogen atom, an alkyl group, a cycloalkyl group which may have a substituent, an alkoxyalkyl group,
An alkoxy group and a halogen atom are shown. ) Group (D) Anthraquinone type dichroic dye represented by the following general formulas [V] and [VI]. (In the formula, R 13 represents a hydrogen atom, an alkyl group, an optionally substituted cycloalkyl group, an alkoxyalkyl group, an alkoxy group, or a halogen atom.) (In the formula, R 14 and R 15 are a hydrogen atom, an alkyl group, a cycloalkyl group which may have a substituent, an alkoxyalkyl group,
An alkoxy group and a halogen atom are shown. )
組成物を担持してなる液晶表示素子において、該液晶組
成物は下記(A)群、(B)群、(C)群及び(D)群
で示される二色性色素を各々の群から少なくとも一種ず
つ含む液晶組成物であることを特徴とする液晶表示素
子。 (A)群 下記一般式〔I〕で表わされるアントラキノン系二色性
色素。 (式中、R1〜R3は水素原子、アルキル基、置換基を有し
ても良いシクロアルキル基、アルコキシアルキル基、ア
ルコキシ基、ハロゲン原子を示し、更にR2、R3は互いに
連結して芳香環を形成しても良い。又、Aは を示す。) (B)群 下記一般式〔II〕で表わされるアゾ系二色性色素。 (式中、R4、R5は水素原子、アルキル基、置換基を有し
ても良いシクロアルキル基、アルコキシアルキル基、ア
ルコキシ基、ハロゲン原子を示し、R6〜R8は水素原子、
メチル基、メトキシ基、ハロゲン原子を示し、更にR7と
R8は互いに連結して芳香環を形成しても良い。) (C)群 下記一般式〔III〕及び一般式〔IV〕で表わされるアン
トラキノン系二色性色素。 (式中、R9、R10は水素原子、アルキル基、置換基を有
しても良いシクロアルキル基、アルコキシアルキル基、
アルコキシ基、ハロゲン原子を示す。) (式中、R11、R12は水素原子、アルキル基、置換基を有
しても良いシクロアルキル基、アルコキシアルキル基、
アルコキシ基、ハロゲン原子を示す。) (D)群 下記一般式〔V〕及び〔VI〕で表わされるアントラキノ
ン系二色性色素。 (式中、R13は水素原子、アルキル基、置換基を有して
も良いシクロアルキル基、アルコキシアルキル基、アル
コキシ基、ハロゲン原子を示す。) (式中、R14、R15は水素原子、アルキル基、置換基を有
しても良いシクロアルキル基、アルコキシアルキル基、
アルコキシ基、ハロゲン原子を示す。)2. A liquid crystal display device comprising a liquid crystal composition supported between electrode substrates, at least one of which is transparent, wherein the liquid crystal composition comprises the following groups (A), (B), (C) and (D): ) A liquid crystal display device comprising a liquid crystal composition containing at least one dichroic dye represented by each group from each group. Group (A) Anthraquinone type dichroic dye represented by the following general formula [I]. (In the formula, R 1 to R 3 represent a hydrogen atom, an alkyl group, a cycloalkyl group which may have a substituent, an alkoxyalkyl group, an alkoxy group or a halogen atom, and R 2 and R 3 are linked to each other. To form an aromatic ring, and A is Indicates. ) Group (B) An azo type dichroic dye represented by the following general formula [II]. (In the formula, R 4 and R 5 represent a hydrogen atom, an alkyl group, an optionally substituted cycloalkyl group, an alkoxyalkyl group, an alkoxy group, or a halogen atom, and R 6 to R 8 represent a hydrogen atom,
Indicates a methyl group, a methoxy group, a halogen atom, and further R 7
R 8 may be linked to each other to form an aromatic ring. ) (C) Group Anthraquinone-based dichroic dyes represented by the following general formulas [III] and [IV]. (In the formula, R 9 and R 10 are a hydrogen atom, an alkyl group, an optionally substituted cycloalkyl group, an alkoxyalkyl group,
An alkoxy group and a halogen atom are shown. ) (In the formula, R 11 and R 12 are a hydrogen atom, an alkyl group, a cycloalkyl group which may have a substituent, an alkoxyalkyl group,
An alkoxy group and a halogen atom are shown. ) Group (D) Anthraquinone type dichroic dye represented by the following general formulas [V] and [VI]. (In the formula, R 13 represents a hydrogen atom, an alkyl group, an optionally substituted cycloalkyl group, an alkoxyalkyl group, an alkoxy group, or a halogen atom.) (In the formula, R 14 and R 15 are a hydrogen atom, an alkyl group, a cycloalkyl group which may have a substituent, an alkoxyalkyl group,
An alkoxy group and a halogen atom are shown. )
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62203852A JPH0759704B2 (en) | 1987-08-17 | 1987-08-17 | Liquid crystal composition and liquid crystal display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62203852A JPH0759704B2 (en) | 1987-08-17 | 1987-08-17 | Liquid crystal composition and liquid crystal display device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01272691A JPH01272691A (en) | 1989-10-31 |
JPH0759704B2 true JPH0759704B2 (en) | 1995-06-28 |
Family
ID=16480762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62203852A Expired - Fee Related JPH0759704B2 (en) | 1987-08-17 | 1987-08-17 | Liquid crystal composition and liquid crystal display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0759704B2 (en) |
-
1987
- 1987-08-17 JP JP62203852A patent/JPH0759704B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH01272691A (en) | 1989-10-31 |
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