JP6696892B2 - 液晶媒体 - Google Patents
液晶媒体 Download PDFInfo
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- JP6696892B2 JP6696892B2 JP2016241607A JP2016241607A JP6696892B2 JP 6696892 B2 JP6696892 B2 JP 6696892B2 JP 2016241607 A JP2016241607 A JP 2016241607A JP 2016241607 A JP2016241607 A JP 2016241607A JP 6696892 B2 JP6696892 B2 JP 6696892B2
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- 0 *c(cc1)ccc1-c1ccc(*)cc1 Chemical compound *c(cc1)ccc1-c1ccc(*)cc1 0.000 description 10
- RSOILICUEWXSLA-UHFFFAOYSA-N CC(C)(C1)N(C)C(C)(C)CC1OC(CCCCCCCCC(OC1CC(C)(C)N(C)C(C)(C)C1)=O)=O Chemical compound CC(C)(C1)N(C)C(C)(C)CC1OC(CCCCCCCCC(OC1CC(C)(C)N(C)C(C)(C)C1)=O)=O RSOILICUEWXSLA-UHFFFAOYSA-N 0.000 description 1
- XITRBUPOXXBIJN-UHFFFAOYSA-N CC(C)(C1)NC(C)(C)CC1OC(CCCCCCCCC(OC1CC(C)(C)NC(C)(C)C1)=O)=O Chemical compound CC(C)(C1)NC(C)(C)CC1OC(CCCCCCCCC(OC1CC(C)(C)NC(C)(C)C1)=O)=O XITRBUPOXXBIJN-UHFFFAOYSA-N 0.000 description 1
- PVIZOIQSUDAODE-UHFFFAOYSA-N CC(CC1)CCC1C(CC1)CCC1c(ccc(O)c1F)c1F Chemical compound CC(CC1)CCC1C(CC1)CCC1c(ccc(O)c1F)c1F PVIZOIQSUDAODE-UHFFFAOYSA-N 0.000 description 1
- KIBVWJSSPWYCAU-UHFFFAOYSA-N CCCCCCCCCCCCCOCC(COc(cc1)cc(O)c1-c1nc(-c2c(C)cc(C)cc2)nc(-c2ccc(C)cc2C)n1)OCCCCCCCCCCCCOCC(COc(cc1)cc(O)c1-c1nc(-c2c(C)cc(C)cc2)nc(-c2ccc(C)cc2C)n1)O Chemical compound CCCCCCCCCCCCCOCC(COc(cc1)cc(O)c1-c1nc(-c2c(C)cc(C)cc2)nc(-c2ccc(C)cc2C)n1)OCCCCCCCCCCCCOCC(COc(cc1)cc(O)c1-c1nc(-c2c(C)cc(C)cc2)nc(-c2ccc(C)cc2C)n1)O KIBVWJSSPWYCAU-UHFFFAOYSA-N 0.000 description 1
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- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
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- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
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Description
液晶ディスプレイのさらに有望なタイプは、いわゆる軸対称微小領域(axially symmetric microdomain)略してASM)ディスプレイであり、それは好ましくはプラズマアレイ(PA LCD;“plasma addressed liquid crystal displays”から)により駆動される。
Zは、単結合、−C2H4−、−CH=CH−、−(CH2)4−、−(CH2)3O−、−O(CH2)3−、−CH=CHCH2CH2−、−CH2CH2CH=CH−、−CH2O−、−OCH2−、−CF2O−、−OCF2−、−COO−、−OCO−、−C2F4−、−CHFCF2−、−CF=CF−、−CH=CF−、−CF=CH−、−CH2−を表す。
alkenylおよびalkenyl*は、互いに独立してそれぞれ2〜6個の炭素原子を有する直鎖アルケニル基、好ましくはビニル、1E−アルケニルまたは3E−アルケニルを表す。
式中、LおよびEはそれぞれ、1,4−ジ置換ベンゼンおよびシクロヘキサン環、4,4’−ジ置換ビフェニル、フェニルシクロヘキサンおよびシクロヘキシルシクロヘキサン環系、2,5−ジ置換ピリミジンおよび1,3−ジオキサン環、2,6−ジ置換ナフタレン、ジ−およびテトラヒドロナフタレン、キナゾリンおよびテトラヒドロキナゾリンからなる群より選ばれる炭素環またはヘテロ環であり、
Gは、−CH=CH−、−N(O)=N−、−CH−CQ−、−CH=N(O)−、−C≡C−、−CH2−CH2−、−CO−O−、−CH2−O−、−CO−S−、−CH2−S−、−CH=N−、−COO−Phe−COO−、−CF2O−、−CF=CF−、−OCF2−、−OCH2−、−(CH2)4−、−(CH2)3O−またはC−C単結合であり、
Qはハロゲン、好ましくはCl、または−CNであり、
R9およびR10は、炭素数18まで、好ましくは8までのアルキル、アルケニル、アルコキシ、アルカノイルオキシまたはアルコキシカルボニルオキシであるが、これらの基の一つは、CN、NC、NO2、NCS、CF3、OCF3、F、ClまたはBrを表してもよい。
V0は、20℃におけるしきい電圧、容量性(V)を表し、
Δnは、20℃にて589nmで測定された光学異方性を表し、
Δεは、20℃、1kHzでの誘電異方性を表し、
cp.は、透明点(℃)を表し、
γ1は、20℃で測定した回転粘度(mPa・s)を表し、
LTSは、テストセルの中で試験された低温安定性を表し、
HR(20)は、20℃での電圧保持率[%]を表し、
HR(100)は、100℃にて5分後の電圧保持率[%]を表し、
HR(UV)は、UV暴露の後の電圧保持率[%]を表す。
Claims (36)
- 6〜45の範囲のγ1/Δn2の比の値、60℃を越える透明点および−2.3以下のΔεを有し、
式O−9の化合物から選択される少なくとも2種類の化合物および45〜100%の成分Aを含み、
ただし成分Aは負の誘電異方性を有し、液晶媒体に−2.3以下の誘電異方性を有するネマチック相を与え、
ただし成分Aは、式IA、IBおよびIIの化合物から選択される少なくとも1種類の化合物を含むことを特徴とする、負の誘電異方性を有する極性化合物の混合物に基づいた液晶媒体(ただし、式(I)の化合物、式(1−1)および(1−2)の化合物ならびに式(I−0)、(II−1)および(II−2)の化合物から成る群より選択される少なくとも1種類の化合物を含む液晶媒体を除く)。
R1およびR2は、互いに独立して、それぞれH、無置換で15個までの炭素原子を有するアルキルまたはアルケニル基を表し、但し、これらの基において1または2以上のCH2基は、独立して、O原子同士が直接結合しないようにして、−O−、−S−、
(式中、
R1およびR2は、互いに独立して、それぞれ無置換で15個までの炭素原子を有する直鎖状のアルキル基を表し、
vは1〜6を表し、
(O)は、酸素原子または単結合を表す。)
R0およびR1は、それぞれ相互に独立して、H、または置換されていないか、CNまたはCF3で一置換またはハロゲンによって少なくとも一置換されている炭素数15個までのアルキルまたはアルケニル基を示し、ここで、さらにこれらの基のうち1または2以上のCH2基は、O原子が互いに直接結合しないように、−O−、−S−、
A1は、
a)1または2の隣接しないCH2基が、−O−または−S−によって置換されてもよい1,4−シクロヘキセニレンまたは1,4−シクロヘキシレン基を示し、
b)1または2のCH基がNによって置換されていてもよい1,4−フェニレン基を示し、
c)ピペリジン−1,4−ジイル−、1,4−ビシクロ[2.2.2]オクチレン−、ナフタレン−2,6−ジイル、デカヒドロナフタレン−2,6−ジイル、1,2,3,4−テトラヒドロナフタレン−2,6−ジイル、フェナントレン−2,7−ジイルおよびフルオレン−2,7−ジイルからなる群からの基を示し、
ここで基a)、b)およびc)は、ハロゲン原子によって一または多置換されていてもよく、
Z1は、−CO−O−、−O−CO−、−CF2O−、−OCF2−、−CH2O−、−OCH2−、−CH2CH2−、−(CH2)4−、−C2F4−、−CH2CF2−、−CF2CH2−、−CF=CF−、−CH=CF−、−CF=CH−、−CH=CH−、−C≡C−または単結合を示し、
mは、0、1または2を示す。)
R1は、アルキルまたはアルケニルであり、
R2は、アルキル、アルケニルまたはアルコキシであり、
Z1は、−C2H4CF2O−または−C2H4OCF2−であり、
A1は、1,4−シクロヘキシレンまたは任意の水素がフッ素に置き換えられてもよい1,4−フェニレンであり、
nは、0または1の整数である。)
R1、R3およびR5は、それぞれ独立に1〜10個の炭素原子を有するアルキル基または2〜10個の炭素原子を有するアルケニル基であり、
R2、R4およびR6は、それぞれ独立に1〜10個の炭素原子を有するアルキルもしくはアルコキシ基、または2〜10個の炭素原子を有するアルケニル基であり、
Z1およびZ2は、それぞれ独立に単結合または−CH2CH2−であり、
環A1およびA2は、それぞれ独立にトランス−1,4−シクロヘキシレン、1,4−フェニレンまたは少なくとも1つの水素原子がフッ素原子で置換された1,4−フェニレンである。)
- 式O−9の化合物は、式CCP−n−mおよびCCP−n−Omの化合物より選択されることを特徴とする請求項2に記載の液晶媒体。
- 式O−9の化合物より選択される化合物を合計で16重量%以上含むことを特徴とする請求項1に記載の液晶媒体。
- 式B−4およびIIIの化合物から選択される少なくとも1種類の化合物を更に含むことを特徴とする請求項1に記載の液晶媒体。
alkylおよびalkyl*は、互いに独立してそれぞれ1〜6個の炭素原子を有する直鎖アルキル基を表し、
(O)は、酸素原子または単結合を表す。)
R31およびR32は、互いに独立して、12個までの炭素原子を有する直鎖アルキル、アルキルアルコキシ、アルコキシまたはアルケニル基を表し、
Zは、単結合、−C2H4−、−CH=CH−、−(CH2)4−、−(CH2)3O−、−O(CH2)3−、−CH=CHCH2CH2−、−CH2CH2CH=CH−、−CH2O−、−OCH2−、−CF2O−、−OCF2−、−COO−、−OCO−、−C2F4−、−CHFCF2−、−CF=CF−、−CH=CF−、−CF=CH−、−CH2−を表す。) - 60〜90℃の透明点を有することを特徴とする請求項1に記載の液晶媒体。
- −2.3〜−5.5のΔε値を有することを特徴とする請求項1に記載の液晶媒体。
- 1.8〜2.3Vの範囲のしきい値(容量性)を有していることを特徴とする請求項1に記載の液晶媒体。
- 式B−4、IB、IIおよびIIIで表される化合物を5種類以上含有することを特徴とする請求項5に記載の液晶媒体。
- 液晶媒体全体に対する式B−4の化合物の割合が、13重量%以上であることを特徴とする請求項5に記載の液晶媒体。
- 液晶媒体全体に対する式IBおよびIIの化合物の割合が、24重量%以上であることを特徴とする請求項5に記載の液晶媒体。
- 液晶媒体全体に対する式IIIの化合物の割合が、10重量%以上であることを特徴とする請求項5に記載の液晶媒体。
- 誘電体として、請求項1に記載の液晶媒体を有することを特徴とする、ECB、PALCD、FFSまたはIPS効果に基づくアクティブマトリックスを備えた電気光学ディスプレイ。
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