JP2018184592A - 液晶媒体 - Google Patents
液晶媒体 Download PDFInfo
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- JP2018184592A JP2018184592A JP2018047688A JP2018047688A JP2018184592A JP 2018184592 A JP2018184592 A JP 2018184592A JP 2018047688 A JP2018047688 A JP 2018047688A JP 2018047688 A JP2018047688 A JP 2018047688A JP 2018184592 A JP2018184592 A JP 2018184592A
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- 0 C*(C)c(ccc1c2[o]c3c(C)c(C)ccc13)c2I Chemical compound C*(C)c(ccc1c2[o]c3c(C)c(C)ccc13)c2I 0.000 description 2
- MPWSAVINQHQSJE-UHFFFAOYSA-N Cc(ccc1c2[o]c3c(C)c(NN)ccc13)c2I Chemical compound Cc(ccc1c2[o]c3c(C)c(NN)ccc13)c2I MPWSAVINQHQSJE-UHFFFAOYSA-N 0.000 description 1
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- C09K2019/0411—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit the structure containing one or more specific, optionally substituted ring or ring systems containing a chlorofluoro-benzene, e.g. 2-chloro-3-fluoro-phenylene-1,4-diyl
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- C09K19/3001—Cyclohexane rings
- C09K19/3003—Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
- C09K2019/3027—Compounds comprising 1,4-cyclohexylene and 2,3-difluoro-1,4-phenylene
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- C09K19/3028—Cyclohexane rings in which at least two rings are linked by a carbon chain containing carbon to carbon single bonds
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- C09K19/3068—Cyclohexane rings in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers chain containing -COO- or -OCO- groups
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- C09K19/3405—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having oxygen as hetero atom the heterocyclic ring being a five-membered ring
- C09K2019/3408—Five-membered ring with oxygen(s) in fused, bridged or spiro ring systems
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- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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Abstract
Description
R1およびR1*は、それぞれ互いに独立に、H、1〜15個のC原子を有するアルキルまたはアルコキシ基を表し、ただし加えて、これらの基における1個以上のCH2基は、それぞれ互いに独立に、O原子が互いに直接連結しないようにして、−C≡C−、−CF2O−、−OCF2−、−CH=CH−、
A1およびA1*は、それぞれ互いに独立に、
a)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、ただし1個または2個の隣接しないCH2基は、−O−または−S−で置き換えられてよく、
b)1,4−フェニレン基、ただし1個または2個のCH基は、Nで置き換えられてよく、
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−ジイルの群からの基を表し、
ただし基a)、b)およびc)は、ハロゲン原子で一置換または多置換されてよく、
Z1およびZ1*は、それぞれ互いに独立に、−CO−O−、−O−CO−、−CF2O−、−OCF2−、−CH2O−、−OCH2−、−CH2−、−CH2CH2−、−(CH2)4−、−CH=CH−CH2O−、−C2F4−、−CH2CF2−、−CF2CH2−、−CF=CF−、−CH=CF−、−CF=CH−、−CH=CH−、−C≡C−または単結合を表し、および
L1およびL2は、それぞれ互いに独立に、F、Cl、CF3またはCHF2を表し、
aおよびbは、それぞれ互いに独立に0または1である。
1.基板としてのシリコンウエハー上のMOS(metal oxide semiconductor:金属酸化物半導体)トランジスター、
2.基板としてのガラス板上の薄膜トランジスター(TFT:thin−film transistor)。
alkylおよびalkyl*は、それぞれ互いに独立に、直鎖状で1〜6個のC原子を有するアルキル基を表し、alkenylおよびalkenyl*は、それぞれ互いに独立に、直鎖状で2〜6個のC原子を有するアルケニル基を表し、alkoxyおよびalkoxy*は、それぞれ互いに独立に、直鎖状で1〜6個のC原子を有するアルコキシ基を表し、L1およびL2は、それぞれ互いに独立に、FまたはClを表す。
R2A、R2BおよびR2Cは、それぞれ互いに独立に、H、置換されていないか、CNまたはCF3によって1置換されている、またはハロゲンによって少なくとも1置換されている15個までのC原子を有するアルキルまたはアルケニル基を表し、ただし加えて、これらの基における1個以上のCH2基は、O原子が互いに直接連結しないようにして、−O−、−S−、
L1〜4は、それぞれ互いに独立に、F、Cl、CF3またはCHF2を表し、
Z2およびZ2’は、それぞれ互いに独立に、単結合、−CH2CH2−、−CH=CH−、CF2O−、−OCF2−、−CH2O−、−OCH2−、−COO−、−OCO−、−C2F4−、−CF=CF−、−CH=CHCH2O−を表し、
pは、0、1または2を表し、
qは、0または1を表し、および
vは、1〜6を表す。
alkylおよびalkyl*は、それぞれ互いに独立に、1〜6個のC原子を有する直鎖状のアルキル基を表し、
alkenylおよびalkenyl*は、それぞれ互いに独立に、2〜6個のC原子を有する直鎖状のアルケニル基を表す。
alkylおよびalkyl*は、それぞれ互いに独立に、1〜6個のC原子を有する直鎖状のアルキル基を表し、および
alkenylおよびalkenyl*は、それぞれ互いに独立に、2〜6個のC原子を有する直鎖状のアルケニル基を表す。
Z1およびZ2は、それぞれ互いに独立に、−C2H4−、−CH=CH−、−(CH2)4−、−(CH2)3O−、−O(CH2)3−、−CH=CHCH2CH2−、−CH2CH2CH=CH−、−CH2O−、−OCH2−、−COO−、−OCO−、−C2F4−、−CF=CF−、−CF=CH−、−CH=CF−、−CF2O−、−OCF2−、−CH2−または単結合を表す。
RB1、RB2、RCR1、RCR2、R1、R2は、それぞれ互いに独立に、R2Aの意味を有し、cは0、1または2であり、dは1または2である。R1およびR2は、好ましくは互いに独立に、1〜6個のC原子を有するアルキルまたはアルコキシを表す。式BF−1およびBF−2の化合物は、式Iの1種類以上の化合物と同一であってはならない。
式中、
alkylおよびalkyl*は、それぞれ互いに独立に、1〜6個のC原子を有する直鎖状のアルキル基を表し、および
alkenylおよびalkenyl*は、それぞれ互いに独立に、2〜6個のC原子を有する直鎖状のアルケニル基を表す。
R11、R12、R13は、それぞれ互いに独立に、1〜6個のC原子を有する直鎖状のアルキル、アルコキシ、アルコキシアルキルまたはアルケニル基を表し、
R12およびR13は、追加してハロゲン、好ましくはFを表し、
本発明による混合物は、好ましくは、
・L1=L2=FおよびR1=R1*=アルコキシである式Iの1種類以上の化合物と、
・1種類以上の式ST−1の化合物と、
・CPY−n−Om、特に、CPY−2−O2、CPY−3−O2および/またはCPY−5−O2を、混合物全体を基礎として、好ましくは5%より多く、特に10〜30%の濃度で、
および/または
・CY−n−Om、好ましくはCY−3−O2、CY−3−O4、CY−5−O2および/またはCY−5−O4を、混合物全体を基礎として、好ましくは5%より多く、特に15〜50%の濃度で、
および/または
・CCY−n−Om、好ましくは、CCY−4−O2、CCY−3−O2、CCY−3−O3、CCY−3−O1および/またはCCY−5−O2を、混合物全体を基礎として、好ましくは5%より多く、特に10〜30%の濃度で、
および/または
・CLY−n−Om、好ましくは、CLY−2−O4、CLY−3−O2および/またはCLY−3−O3を、混合物全体を基礎として、好ましくは5%より多く、特に10〜30%の濃度で、
含む。
・化合物B−2O−O5を、1〜15重量%、より好ましくは2〜12重量%、特に好ましくは3〜10重量%、非常に特に好ましくは4〜8重量%の範囲内の濃度で、
・式ST、好ましくは式ST−1a−1および/またはST−1b−1の化合物を、0.005%〜1%、より好ましくは0.01%〜0.05%、特に好ましくは0.025%〜0.150%、非常に特に好ましくは0.030%〜0.100%の範囲内の合計濃度で、
・CPY−n−OmおよびCY−n−Omを、混合物全体を基礎として、好ましくは、10〜80%の濃度で、
および/または
・CPY−n−OmおよびCK−n−Fを、混合物全体を基礎として、好ましくは、10〜70%の濃度で、
および/または
・CPY−n−OmおよびPY−n−Om、好ましくはCPY−2−O2および/またはCPY−3−O2およびPY−3−O2を、混合物全体を基礎として好ましくは、10〜45%の濃度で、
および/または
・CPY−n−OmおよびCLY−n−Omを、混合物全体を基礎として好ましくは、10〜80%の濃度で、
および/または
・CCVC−n−V、好ましくはCCVC−3−Vを、混合物全体を基礎として好ましくは、2〜10%の濃度で、
および/または
・CCC−n−V、好ましくはCCC−2−Vおよび/またはCCC−3−Vを、混合物全体を基礎として好ましくは、2〜10%の濃度で、
および/または
・CC−V−Vを、混合物全体を基礎として好ましくは、5〜50%の濃度で
含む。
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単結合を表し、Qはハロゲン、好ましくは塩素、または、−CNを表し、および、R20およびR21は、それぞれ、18個までの、好ましくは8個までの炭素原子を有するアルキル、アルケニル、アルコキシ、アルコキシアルキルまたはアルコキシカルボニルオキシを表し、あるいは、これらの基の1つは、CN、NC、NO2、NCS、CF3、SF5、OCF3、F、ClまたはBrを表す。
以下の略称を使用する:
(n、m、m’、z:それぞれ互いに独立に、1、2、3、4、5または6;(O)CmH2m+1はOCmH2m+1またはCmH2m+1を意味する)。
表Bに、本発明による混合物に添加できるドーパントを示す。混合物がドーパントを含む場合、0.01〜4重量%、好ましくは0.01〜3重量%のドーパントの量で添加する。
例えば、0〜10重量%、好ましくは0.001〜5重量%、特には0.001〜1重量%の量で本発明による混合物に添加できる式STのものと異なる他の安定剤を下に示す。
V0は、20℃における容量閾電圧[V]を表し、
neは、20℃および589nmにおける異常屈折率を表し、
n0は、20℃および589nmにおける通常屈折率を表し、
Δnは、20℃および589nmにおける光学的異方性を表し、
ε⊥は、20℃および1kHzにおけるダイレクターに垂直な誘電率を表し、
ε‖は、20℃および1kHzにおけるダイレクターに平行な誘電率を表し、
Δεは、20℃および1kHzにおける誘電異方性を表し、
cl.p.,T(N,I)は、透明点[℃]を表し、
γ1は、磁場における回転法によって決定される、20℃で測定される回転粘度[mPa・s]を表し、
K1は、20℃における「スプレイ(splay)」変形に対する弾性定数[pN]を表し、
K2は、20℃における「ツイスト(twist)」変形に対する弾性定数[pN]を表し、
K3は、20℃における「ベンド(bend)」変形に対する弾性定数[pN]を表し、
LTSは、試験セルにおいて決定される低温安定性(ネマチック相)を表す。
<比較混合物C1>を以下の通り調製する。
1)本発明による式Iの化合物および安定剤のない対応する媒体のVHRと同様の高レベルまたは更に高いVHR値を、
2)本発明による式Iの化合物および安定剤のない対応する媒体の低効率の値より低い低効率の値と
を組み合わせることで、画像固着の改良(より低い程度)または画像固着が全くないことさえにも至ると推定される。
Claims (15)
- 1種類以上の式Iの化合物および1種類以上の式STの化合物を含むことを特徴とする液晶媒体。
R1およびR1*は、それぞれ互いに独立に、H、1〜15個のC原子を有するアルキルまたはアルコキシ基を表し、ただし加えて、これらの基における1個以上のCH2基は、それぞれ互いに独立に、O原子が互いに直接連結しないようにして、−C≡C−、−CF2O−、−OCF2−、−CH=CH−、
A1およびA1*は、それぞれ互いに独立に、
a)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、ただし1個または2個の隣接しないCH2基は、−O−または−S−で置き換えられてよく、
b)1,4−フェニレン基、ただし1個または2個のCH基は、Nで置き換えられてよく、
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−ジイルの群からの基を表し、
ただし基a)、b)およびc)は、ハロゲン原子で一置換または多置換されてよく、
Z1およびZ1*は、それぞれ互いに独立に、−CO−O−、−O−CO−、−CF2O−、−OCF2−、−CH2O−、−OCH2−、−CH2−、−CH2CH2−、−(CH2)4−、−CH=CH−CH2O−、−C2F4−、−CH2CF2−、−CF2CH2−、−CF=CF−、−CH=CF−、−CF=CH−、−CH=CH−、−C≡C−または単結合を表し、および
L1およびL2は、それぞれ互いに独立に、F、Cl、CF3またはCHF2を表し、
aおよびbは、それぞれ互いに独立に0または1である。)
Gは、単結合または1〜20個のC原子を有する2価の脂肪族または環式脂肪族基を表す。) - 式IにおいてL1およびL2は、それぞれFを表す請求項1または2に記載の液晶媒体。
- 式IIA、IIBおよびIICの化合物から成る群より選択される1種類以上の化合物を追加的に含むことを特徴とする請求項1〜5のいずれか1項に記載の液晶媒体。
R2A、R2BおよびR2Cは、それぞれ互いに独立に、H、無置換か、CNまたはCF3で一置換されている、またはハロゲンで少なくとも一置換されている15個までのC原子を有するアルキルまたはアルケニル基を表し、ただし加えて、これらの基における1個以上のCH2基は、O原子が互いに直接連結しないようにして、−O−、−S−、
L1〜4は、それぞれ互いに独立に、FまたはClを表し、
Z2およびZ2’は、それぞれ互いに独立に、単結合、−CH2CH2−、−CH=CH−、−CF2O−、−OCF2−、−CH2O−、−OCH2−、−COO−、−OCO−、−C2F4−、−CF=CF−または−CH=CHCH2O−を表し、
pは、0、1または2を表し、
qは、0または1を表し、および
vは、1〜6を表す。) - 混合物全体における式Iの化合物の割合は、1〜40重量%であることを特徴とする請求項1〜9のいずれか1項に記載の液晶媒体。
- 混合物全体における式STの化合物の割合は、0.005〜1%であることを特徴とする請求項1〜10のいずれか1項に記載の液晶媒体。
- 請求項1〜11のいずれか1項に記載の液晶媒体を調製する方法であって、
1種類以上の式Iの化合物を1種類以上の更なる液晶化合物と混合し、1種類以上の式STの化合物を添加することを特徴とする方法。 - 電気光学的ディスプレイにおける、請求項1〜11のいずれか1項に記載の液晶媒体の使用。
- 誘電体として請求項1〜11のいずれか1項に記載の液晶媒体を含有することを特徴とする、アクティブマトリクスアドレスを有する電気光学的ディスプレイ。
- 電気光学的ディスプレイが、VA、PSA、PA−VA、SS−VA、SA−VA、PS−VA、PALC、IPS、PS−IPS、FFS、UB−FFS、U−IPSまたはPS−FFSディスプレイである請求項15に記載の電気光学的ディスプレイ。
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TWI766966B (zh) | 2022-06-11 |
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