JP5534115B1 - ネマチック液晶組成物 - Google Patents
ネマチック液晶組成物 Download PDFInfo
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- JP5534115B1 JP5534115B1 JP2013553697A JP2013553697A JP5534115B1 JP 5534115 B1 JP5534115 B1 JP 5534115B1 JP 2013553697 A JP2013553697 A JP 2013553697A JP 2013553697 A JP2013553697 A JP 2013553697A JP 5534115 B1 JP5534115 B1 JP 5534115B1
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Abstract
Description
(式中、R01、A01、A02、A03、Z01、Z02、X01及びY01は一般式(LC0)における同じ意味を表し、A01、A03及び/又はZ01、Z02が2個以上存在する場合にはそれぞれ同一であっても異なっていてもよい。)で表される化合物であることがより好ましい。
で表される化合物であることが好ましい。この内、一般式(LC4−1)から一般式(LC4−3)、一般式(LC4−6)、一般式(LC4−9)、一般式(LC4−10)、一般式(LC4−12)から一般式(LC4−17)で表される化合物群を本発明の必須成分である一般式(LC0)と併用することがより好ましい。一般式(LC4−9)から一般式(LC4−11)及び一般式(LC4−15)から一般式(LC4−17)におけるX44及び又はX45がFである化合物群から選ばれる化合物を本発明の必須成分である一般式(LC0)と併用することが更に好ましい。
より好ましくは、重合性化合物一般式(PC)におけるMGpが以下の構造
(式中、C01〜C03はそれぞれ独立して1,4-フェニレン基、1,4-シクロヘキシレン基、1,4-シクロヘキセニル基、テトラヒドロピラン-2,5-ジイル基、1,3-ジオキサン-2,5-ジイル基、テトラヒドロチオピラン-2,5-ジイル基、1,4-ビシクロ(2,2,2)オクチレン基、デカヒドロナフタレン-2,6-ジイル基、ピリジン-2,5-ジイル基、ピリミジン-2,5-ジイル基、ピラジン-2,5-ジイル基、1,2,3,4-テトラヒドロナフタレン-2,6-ジイル基、2,6-ナフチレン基、フェナントレン-2,7-ジイル基、9,10-ジヒドロフェナントレン-2,7-ジイル基、1,2,3,4,4a,9,10a-オクタヒドロフェナントレン2,7-ジイル基又はフルオレン2,7-ジイル基を表し、1,4-フェニレン基、1,2,3,4-テトラヒドロナフタレン-2,6-ジイル基、2,6-ナフチレン基、フェナントレン-2,7-ジイル基、9,10-ジヒドロフェナントレン-2,7-ジイル基、1,2,3,4,4a,9,10a-オクタヒドロフェナントレン2,7-ジイル基及びフルオレン-2,7-ジイル基は置換基として1個以上のF、Cl、CF3、OCF3、シアノ基、炭素原子数1〜8のアルキル基、アルコキシ基、アルカノイル基、アルカノイルオキシ基、炭素原子数2〜8のアルケニル基、アルケニルオキシ基、アルケノイル基又はアルケノイルオキシ基を有していても良く、Zp1及びZp2はそれぞれ独立して−COO−、−OCO−、−CH2CH2−、−OCH2−、−CH2O−、−CH=CH−、−C≡C−、−CH=CHCOO−、−OCOCH=CH−、−CH2CH2COO−、−CH2CH2OCO−、−COOCH2CH2−、−OCOCH2CH2−、−CONH−、−NHCO−又は単結合を表し、p3は0、1又は2を表す。)
ここで、Sp1及びSp2はそれぞれ独立してアルキレン基である場合、該アルキレン基は1つ以上のハロゲン原子又はCNにより置換されていても良く、この基中に存在する1つ又は2つ以上のCH2基はO原子が直接隣接しないように−O−、−S−、−NH−、−N(CH3)−、−CO−、−COO−、−OCO−、−OCOO−、−SCO−、−COS−又は−C≡C−により置き換えられていてもよい。また、P1及びP2はそれぞれ独立して下記の一般式
(式中、Rp2からRp6はそれぞれ独立して水素原子、ハロゲン原子又は炭素原子数1〜5のアルキル基を表す。)
より具体的には、重合性化合物一般式(PC)が一般式(PC0−1)から一般式(PC0−6)
重合性化合物の使用量は好ましくは0.05〜2.0質量%である。
Ze1、Ze2はそれぞれ独立して単結合、−CH=CH−、−C≡C−、−CH2CH2−、−(CH2)4−、−COO−、−OCO−、−OCH2−、−CH2O−、−OCF2−又は−CF2O−を表し
E1はシクロヘキサン環又はベンゼン環を表し、シクロヘキサン環中の1つ又は2つ以上の−CH2−は酸素原子が直接隣接しないように−O−で置換されていてもよく、また該環注の1つ又は2つ以上の−CH2CH2−は−CH=CH−、−CF2O−又は−OCF2−で置換されていてもよく、ベンゼン環中の1つ又は2つ以上の−CH=は窒素原子が直接隣接しないように、−N=で置換されていてもよく、該環中の1つ以上の水素原子がF、Cl、CH3で置換されていてもよく、q1は0、1、2又は3を表す。)
本発明の液晶組成物は、液晶表示素子特にアクティブマトリックス駆動用液晶表示素子として、例えばTNモード、OCBモード、ECBモード、IPS(FFS電極を含む)モード又はVA−IPSモード(FFS電極を含む)に使用することが出来る。ここで、VA−IPSモードとは、電圧無印加時に、誘電率異方性が正の液晶材料(Δε>0)を基板面に対し垂直に配向させ、同一基板面上に配置した画素電極と共通電極により液晶分子を駆動する方法であり、画素電極と共通電極で発生する湾曲電界の方向に液晶分子が配列することから、容易に画素分割やマルチドメインを形成することができ、応答にも優れる利点がある。非特許文献Proc.13th IDW,97(1997)、Proc.13th IDW,175(1997)、SID Sym.Digest,319(1998)、SID Sym.Digest,838(1998)、SID Sym.Digest,1085(1998)、SID Sym.Digest,334(2000)、Eurodisplay Proc.,142(2009)によれば、EOC、VA−IPSなど種々の呼称がされているが、本発明においては以下「VA−IPS」と略称する。
一方、VA−IPS方式においては、本発明者等によって、式(IV)が適用されることを見出している。
TN-I :ネマチック相−等方性液体相転移温度(℃)
T-n :ネマチック相の下限温度(℃)
ε⊥ :25℃での分子長軸方向に対し垂直な方向の誘電率
Δε :25℃での誘電率異方性
no :25℃での常光に対する屈折率
Δn :25℃での屈折率異方性
Vth :25℃での周波数1KHzの矩形波を印加した時の透過率が10%変化するセル厚6μmのセルでの印加電圧(V)
η20 :20℃でのバルク粘性(mPa・s)
γ1 :回転粘性(mPa・s)
化合物記載に下記の略号を使用する。
以下に、調製した本発明の液晶組成物(実1)と、比較のために調製した液晶組成物(比1)及び(比2)の物性値を示す。
(実施例2)
以下に、調製した液晶組成物とその物性値を示す。
以下に、調製した液晶組成物とその物性値を示す。
以下に、調製した液晶組成物とその物性値を示す。
以下に、調製した液晶組成物とその物性値を示す。
以下に、調製した液晶組成物とその物性値を示す。
以下に、調製した液晶組成物とその物性値を示す。
以下に、調製した液晶組成物とその物性値を示す。
以下に、調製した液晶組成物とその物性値を示す。
以下に、調製した液晶組成物とその物性値を示す。
以下に、調製した液晶組成物とその物性値を示す。
以下に、調製した液晶組成物とその物性値を示す。
櫛形電極構造の透明電極を同一基板に一対設けた第一の基板と電極構造を設けない第二の基板を使用し各々の基板上に垂直配向性の配向膜を形成し、第一の基板と第二の基板をギャップ間隔4.0ミクロンのIPS用空セルを作製した。この空セルに実施例12で示された液晶組成物を注入し液晶表示素子を作製した。この表示素子の電気光学特性を測定したところ、透過率が10%変化する印加電圧は、1.42vであった。また、5vを印加した時の応答速度は7.1ミリ秒であり、電圧をオフにした時の応答速度は15.5ミリ秒であった。
Claims (21)
- 正の誘電率異方性を有する液晶組成物であって、前記液晶組成物が一般式(LC0)で表される化合物から選ばれる1種又は2種以上の化合物を含有し、さらに一般式(LC1)から一般式(LC5)で表される化合物群から選ばれる1種又は2種以上の化合物を含有し、一般式(LC2)に存在するA 21 からA 23 の少なくとも一つがテトラヒドロピラン−2,5−ジイル基である化合物、及び一般式(LC3)に存在するA 31 がテトラヒドロピラン−2,5−ジイル基である化合物からなる群より選ばれる1種又は2種以上の化合物を含有することを特徴とする液晶組成物。
(式中、R01〜R41はそれぞれ独立して炭素数1〜15のアルキル基を表し、該アルキル基中の1つ又は2つ以上の−CH2−は、酸素原子が直接隣接しないように、−O−、−CH=CH−、−CO−、−OCO−、−COO−、−C≡C−、−CF2O−又は−OCF2−で置換されてよく、該アルキル基中の1つ又は2つ以上の水素原子は任意にハロゲンで置換されていてもよく、R51及びR52はそれぞれ独立して炭素数1〜15のアルキル基を表し、該アルキル基中の1つ又は2つ以上の−CH2−は、酸素原子が直接隣接しないように、−O−、−CH=CH−、−CO−、−OCO−、−COO−又は−C≡C−で置換されてよく、後述のA51又はA53がシクロヘキサン環の場合は−OCF3又は−CF3であってもよく、A01〜A42はそれぞれ独立して下記の何れかの構造
(該構造中シクロヘキサン環の1つ又は2つ以上の−CH2−は酸素原子が直接隣接しないように、−O−で置換されていてもよく、該構造中ベンゼン環の1つ又は2つ以上の−CH=は窒素原子が直接隣接しないように、−N=で置換されていてもよく、X61及びX62はそれぞれ独立して−H、−Cl、−F、−CF3又は−OCF3を表す。)を表し、A51〜A53はそれぞれ独立して下記の何れかの構造
(式中、シクロヘキサン環中の1つ又は2つ以上の−CH2CH2−は−CH=CH−、−CF2O−又は−OCF2−で置換されていてもよく、ベンゼン環中の1つ又は2つ以上の−CH=は窒素原子が直接隣接しないように、−N=で置換されていてもよい。)を表し、X01 はフッ素原子を表し、X11〜X43はそれぞれ独立して−H、−Cl、−F、−CF3又は−OCF3を表し、Y01〜Y41は−Cl、−F、−OCHF2、−CF3、−OCF3、炭素数2〜5のフッ素化されたアルキル基、炭素数2〜5のフッ素化されたアルコキシ基、炭素数2〜5のフッ素化されたアルケニル基または炭素数2〜5のフッ素化されたアルケニルオキシ基を表し、Z01及びZ02はそれぞれ独立して単結合、−CH=CH−、−C≡C−、−CH2CH2−、−(CH2)4−、−OCF2−又は−CF2O−を表し、Z31〜Z42はそれぞれ独立して単結合、−CH=CH−、−C≡C−、−CH2CH2−、−(CH2)4−、−OCF2−又は−CF2O−を表し、存在するZ31及びZ32の内少なくとも1つは単結合でなく、Z51及びZ52はそれぞれ独立して単結合、−CH=CH−、−C≡C−、−CH2CH2−、−(CH2)4−、−OCH2−、−CH2O−、−OCF2−又は−CF2O−を表し、m01〜m51はそれぞれ独立して0〜3の整数を表し、m01+m02、m31+m32及びm41+m42はそれぞれ独立して1、2、3又は4を表し、A01、A03、A23、A31、A32、A41、A42、A52、Z01、Z02、Z31、Z32、Z41、Z42及び/又はZ52が複数存在する場合、それらは同一であっても、異なっていてもよい。) - 一般式(LC0)で表される化合物を1種又は2種以上含有し、さらに一般式(LC1)から一般式(LC4)で表される化合物群から選ばれる1種又は2種以上の化合物を含有し、さらに一般式(LC5)で表される化合物を1種又は2種以上含有する請求項1記載の液晶組成物。
- 一般式(LC0)から一般式(LC5)に存在するR01からR52が炭素数2〜5のアルケニル基である化合物を1種又は2種以上含有する請求項1から6のいずれか一項に記載の液晶組成物。
- 一般式(LC0)に存在するA01〜A03のうち少なくとも1つがテトラヒドロピラン−2,5−ジイル基である化合物、一般式(LC1)におけるA11がテトラヒドロピラン−2,5−ジイル基である化合物、一般式(LC4)に存在するA41〜A42のうち少なくとも1つがテトラヒドロピラン−2,5−ジイル基である化合物及び一般式(LC5)に存在するA51〜A53のうち少なくとも1つがテトラヒドロピラン−2,5−ジイル基である化合物で表される化合物からなる群から選ばれる1種又は2種以上の化合物を含有する請求項1から7のいずれか一項に記載の液晶組成物。
- 一般式(LC0)に存在するZ01〜Z02のうち少なくとも1つが−CF2O−又は−OCF2−である化合物、一般式(LC3)に存在するZ31〜Z32のうち少なくとも1つが−CF2O−又は−OCF2−である化合物、一般式(LC4)に存在するZ41〜Z42のうち少なくとも1つが−CF2O−又は−OCF2−である化合物及び一般式(LC5)に存在するZ51〜Z52のうち少なくとも1つが−CF2O−又は−OCF2−である化合物からなる群から選ばれる1種又は2種以上の化合物を含有する請求項1から8のいずれか一項に記載の液晶組成物。
- 一般式(LC5)で表される化合物を30〜70質量%含有し、液晶組成物の20℃での粘度ηが20mPa・s以下である請求項1から9のいずれか一項に記載の液晶組成物。
- 光学活性化合物を1種又は2種以上含有する請求項1から10のいずれか一項に記載の液晶組成物。
- 重合性化合物を1種又は2種以上含有する請求項1から11のいずれか一項に記載の液晶組成物。
- 酸化防止剤を1種又は2種以上含有する請求項1から12のいずれか一項に記載の液晶組成物。
- UV吸収剤を1種又は2種以上含有する請求項1から13のいずれか一項に記載の液晶組成物。
- 請求項1から14のいずれか一項に記載の液晶組成物を用いた液晶表示素子。
- 請求項1から14のいずれか一項に記載の液晶組成物を用いたアクティブマトリックス駆動用液晶表示素子。
- 請求項1から14のいずれか一項に記載の液晶組成物を用いたTNモード、OCBモード、ECBモード、IPSモード又はVA−IPSモード用液晶表示素子。
- 請求項12に記載の液晶組成物を用い、電圧印加下あるいは電圧無印加下で該液晶組成物中に含有する重合性化合物を重合させて作製した高分子安定化のTNモード、OCBモード、ECBモード、IPSモード又はVA−IPSモード用液晶表示素子。
- 液晶分子と接する面で該液晶分子を水平、チルト及び又は垂直に配向させる配向層が、ポリイミド(PI)、ポリアミド、カルコン、シンナメート又はシンナモイルの少なくとも一種から選ばれた化合物を含有する配向膜である請求項15から18のいずれか一項に記載の液晶表示素子。
- 請求項19記載の配向層に更に重合性液晶化合物及び又は重合性非液晶化合物を含有する請求項19記載の液晶表示素子。
- 液晶組成物と接する面の配向層として、光配向技術を用いて作製した配向膜を設けた請求項19又は20記載の液晶表示素子。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2017031428A (ja) * | 2014-09-05 | 2017-02-09 | Dic株式会社 | 液晶組成物及びそれを使用した液晶表示素子 |
| KR20170021843A (ko) * | 2014-09-05 | 2017-02-28 | 디아이씨 가부시끼가이샤 | 액정 조성물 및 그것을 사용한 액정 표시 소자 |
| JPWO2016035667A1 (ja) * | 2014-09-05 | 2017-04-27 | Dic株式会社 | 液晶組成物及びそれを使用した液晶表示素子 |
| KR101955953B1 (ko) * | 2014-09-05 | 2019-03-08 | 디아이씨 가부시끼가이샤 | 액정 조성물 및 그것을 사용한 액정 표시 소자 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20140145633A (ko) | 2014-12-23 |
| CN104411801A (zh) | 2015-03-11 |
| DE112013005035B4 (de) | 2016-09-08 |
| KR101555599B1 (ko) | 2015-09-24 |
| WO2014061366A1 (ja) | 2014-04-24 |
| TW201435062A (zh) | 2014-09-16 |
| JPWO2014061366A1 (ja) | 2016-09-05 |
| US20150284634A1 (en) | 2015-10-08 |
| DE112013005035T5 (de) | 2015-07-30 |
| CN104411801B (zh) | 2016-04-20 |
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