CN1076041C - 应用于有源矩阵的向列液晶组合物 - Google Patents
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- CN1076041C CN1076041C CN96190658A CN96190658A CN1076041C CN 1076041 C CN1076041 C CN 1076041C CN 96190658 A CN96190658 A CN 96190658A CN 96190658 A CN96190658 A CN 96190658A CN 1076041 C CN1076041 C CN 1076041C
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- 239000000203 mixture Substances 0.000 title claims abstract description 23
- 239000004988 Nematic liquid crystal Substances 0.000 title claims abstract description 6
- 239000011159 matrix material Substances 0.000 title abstract description 7
- 230000003287 optical effect Effects 0.000 claims abstract description 6
- 239000004973 liquid crystal related substance Substances 0.000 claims description 17
- 150000001875 compounds Chemical class 0.000 claims description 16
- 125000004432 carbon atom Chemical group C* 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 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 6
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- KLECYOQFQXJYBC-UHFFFAOYSA-N 1-fluoro-2-phenylbenzene Chemical group FC1=CC=CC=C1C1=CC=CC=C1 KLECYOQFQXJYBC-UHFFFAOYSA-N 0.000 description 3
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 235000010290 biphenyl Nutrition 0.000 description 2
- 239000004305 biphenyl Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000004990 Smectic liquid crystal Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
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Abstract
本发明涉及电压保持率高、光学双折射△n在0.12至0.13范围和阈电压低的用于有源矩阵显示器的向列液晶组合物。
Description
本发明涉及基于端位和侧位氟化化合物的向列液晶组合物。这种组合物在有源矩阵应用上是特别有用的。
有源矩阵显示器(AMD)用作高信息量商业用显示器是很受欢迎的。这种AMDs在电视上应用,也用于计算机终端、汽车和飞机用的高信息量显示器。
AMDs具有在各象素积成的非线性电开关器件。薄膜晶体管(TFT)[Okubo,U,等人,1982,SID82 Digest,pp40-41]或二极管(例如金属-绝缘体-金属:MIM)(Niwa,K.等人,1984,SID 84,Di-gest,pp304-307]可被采用作为非线性驱动器件。如果能得到好的观察角特性,这些非线性驱动器件允许使用具有相当平滑的光电特性的光电效应。因此可以使用扭曲角为90°的TN型盒[Schadt,M.和Helfrich,W.,1971,Appl.Phys.Lett.,18,127]。在这些应用中,液晶的一些物理性质变得比无源TN显示器更为重要。AMD功能的某些决定性的性质是液晶的电阻率和稳定性[Togashi,S.,Sekiguchi,K.,Tanabe,H.,Yamamoto,E.,Sorimachi,K.,Kajima,E.,Watanabe,H.,Shimuzu,Proc.Eurodisplay 84,Sep,1984;A210-288Matrix LCD Controlled by Double Stage Diode Rings(用双级二极管环控制的210-288矩阵液晶显示器),P,144ff,Paris;Stromer,M.,Proc.Eurodisplay 84,Sept.1984;Design of Thin Film Transistorsfor Matrix Addressing of Television Liquid Crystal Displays(用于电视液晶显示器矩阵寻址的薄膜晶体管的设计),P145ff,Paris]。
在AMD中,非线性开关器件是在多重网格中寻址的。因此它们在处于激活的有限时间内对象素的电极充电,其后它们变成截止状态,直至在下一周期中它们再被寻址。结果,在激活的(充电的)象素上的电压改变使这种显示器不希望有的,但又是非常决定性的特征。象素的放电决定于两个因素,它们是象素电极容量和电极间介电材料的电阻率,即决定于液晶。在象素处的电压衰减特性时间常数(RC-time)必须明显地比两个寻址周期(tadr.)间的时间大。经常用以描述AMD性能的参数是象素的电压保持率HR:
当象素处的电压成指数衰减时,电压保持率的增加必须要有电阻率异常高的液晶材料。
对于显示器中的液晶电阻率,有几点是重要的,例如取向层、取向材料的处理(Curing)条件,但决不是说所用液晶的电性质不太重要,特别是显示器液晶的电阻率,它决定象素处的电压降的大小。
在下面的参数文献中也公开了类似的组合物:WO-A-9202597;WO-A-9116399;WO-A-9116400;WO-A-9116397;WO-A-9115555;WO-A-9116398;WO-A-9103450和WO-A-9302153。然而,大多数的已知组合物是用于所谓的first minimum of transmission,因此有相对低的光学双折射值。
对于投影屏幕来说,要求的光学双折射值较高,因而仍然非常需要具有光学双折射Δn在0.12-0.13、电阻率高和其它适合用于AMDs的材料性质的液晶组合物,这些性质如低的阈电压,具有极低转变温度的近晶状液晶向列的宽向列中间相,以及低温下无结晶。
本发明的目的是提供也能满足其它要求的电阻率非常高的液晶组合物。
其中残基R1-R5是直链烷基,R1和R3有2-5个碳原子,R2和R4有3-5个碳原子,R5有2、3或5个碳原子。其特征在于该组合物含15-20%(重量)第1组的四种化合物、23-27%(重量)第2组的两种化合物、18-22%(重量)第3组的三种化合物、12-15%(重量)第4组的两种化合物和15-20%(重量)第5组的三种化合物,其特征还在于该组合物显示的阈电压V10低于1.6伏,在液晶组合物层厚
的扭曲向列盒中测定。组合物非常适用于投影屏幕。它在AMDs中能得到很高的RC-时间(RC-time)值。这些组合物也显示了降低的粘度和/或在-30℃不出现任何结晶。
第1-5组的化合物已知于欧洲专利申请0387032和0280902、欧洲专利0051738和0125653、国际专利申请WO89/02884和WO90/08757以及USP4,302,352、USP4,710,315和USP4,419,264,或者它们可以用类似已知化合物的方法来制备。
优选的组合物也包括具有两个环的第0组的一种或多种化合物,第0组
其中R0代表2-7个碳原子的直链烷基,E0是-(CH2)4-、-(CH2)2-、-CO-O-或-单键,L和Q如在第2组中所定义。E0最好是-(CH2)2-或一单键,Q是一单键,L中之一是H、另一L是H或F。
本发明组合物的制备是按常规方法进行的。一般说来,是将用量较小的组分溶于构成主要成分的组分中,最好是在升高的温度下进行。如果选择的此温度高于主要成分的透明点,就能特别容易地观察到溶解过程的完成。
但是也可以在适合的有机溶剂中将组分溶液混合,适合的有机溶液例如丙酮、氯仿或甲醇,并在彻底混合后除去溶剂,例如用减压蒸馏法。不言而喻,在用此方法时必须保证溶剂中不能引入任何污染物或不需要的掺杂物。
使用适合的添加剂能使本发明的液晶相改性,使之能用于任何至今所公开的AMD类型。
下面的实施例是用于对本发明进行说明,而不是进行限制。在实施例中,液晶材料的熔点和透明点均以摄氏度表示,百分数用重量表示。
实施例
制备了由下列组分组成的液晶组合物:
4%的反-1-对氟苯基-4-正庚基环己烷
4%的对-[反-4-(反-4-乙基环己基)环己基]-三氟甲氧基苯
4%的对-[反-4-(反-4-丙基环己基)环己基]-三氟甲氧基苯
4%的对-[反-4-(反-4-正丁基环己基)环己基]-三氟甲氧基苯
5%的对-[反-4-(反-4-正戊基环己基)环己基]-三氟甲氧基苯
8%的4′-(反-4-乙基环己基)-3,4-二氟代联苯
5%的4′-(反-4-正丙基环己基)-3,4-二氟代联苯
5%的4′-(反-4-正戊基环己基)-3,4-二氟代联苯
7%的4′-(反-4-正丙基环己基)-3,4,2′,6′-四氟代联苯
7%的4′-(反-4-正戊基环己基)-3,4,2′,6′-四氟代联苯
6%的1-(对-氟代苯基)-2-(2-氟-4-乙基联苯-4′-基)乙烷
4%的1-(对-氯代苯基)-2-(2-氟-4-正丙基联苯-4′-基)乙烷
9%的1-(对-氯代苯基)-2-(2-氟-4-正戊基联苯-4′-基)乙烷
12%的4-[反-4-(反-4-正丙基环己基)环己基]-2,6-二氟-二氟甲氧基苯
13%的4-[反-4-(反-4-正戊基环己基)环己基]-2,6-二氟-二氟甲氧基苯
3%的4,4′-双(反-4-丙基环己基)-2-氟代联苯
组合物的物理参数如下:
透明点: 85℃
S→N: <-40℃
粘度: 28mmS-1(20℃)
Δn: 0.1238
Δε: +8.4
V(10.0.20): 1.57V
V(50.0.20): 2.38V
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95102955.2 | 1995-03-02 | ||
EP95102955 | 1995-03-02 |
Publications (2)
Publication Number | Publication Date |
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CN1157005A CN1157005A (zh) | 1997-08-13 |
CN1076041C true CN1076041C (zh) | 2001-12-12 |
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Application Number | Title | Priority Date | Filing Date |
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CN96190658A Expired - Fee Related CN1076041C (zh) | 1995-03-02 | 1996-02-17 | 应用于有源矩阵的向列液晶组合物 |
Country Status (8)
Country | Link |
---|---|
US (1) | US5753142A (zh) |
EP (1) | EP0770117B1 (zh) |
JP (1) | JP3751319B2 (zh) |
KR (1) | KR100385533B1 (zh) |
CN (1) | CN1076041C (zh) |
DE (1) | DE69605751D1 (zh) |
TW (1) | TW294714B (zh) |
WO (1) | WO1996041847A1 (zh) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
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KR0184869B1 (ko) * | 1989-12-06 | 1999-05-15 | 위르겐 호이만 | 1,4-이치환된 2,6-디플루오로벤젠 화합물 및 액정 매질 |
WO1997038062A1 (en) * | 1996-04-10 | 1997-10-16 | Merck Patent Gmbh | Nematic liquid-crystal composition for active matrix application |
JP3216550B2 (ja) * | 1996-09-25 | 2001-10-09 | チッソ株式会社 | 液晶組成物および液晶表示素子 |
US6579577B2 (en) | 1996-09-25 | 2003-06-17 | Chisso Corporation | Substituted benzene derivative, liquid crystal composition, and liquid crystal display element |
EP1783541A3 (en) * | 2001-06-26 | 2007-05-23 | Sony Corporation | Projection optical system and projection display system |
CN101544893B (zh) * | 2009-05-07 | 2012-11-07 | 石家庄诚志永华显示材料有限公司 | 液晶组合物及液晶显示元件 |
CN101544894B (zh) * | 2009-05-07 | 2012-08-29 | 石家庄诚志永华显示材料有限公司 | 一种液晶组合物 |
CN108659857B (zh) * | 2017-03-30 | 2022-03-11 | 江苏和成显示科技有限公司 | 具有正介电各向异性的液晶组合物及其显示器件 |
CN108659856B (zh) * | 2017-03-30 | 2022-03-11 | 江苏和成显示科技有限公司 | 具有正介电各向异性的液晶组合物及其显示器件 |
CN109181713A (zh) * | 2017-06-30 | 2019-01-11 | 江苏和成显示科技有限公司 | 一种液晶组合物及其应用 |
CN109207168B (zh) | 2017-06-30 | 2021-08-06 | 江苏和成显示科技有限公司 | 一种液晶组合物及其应用 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4027315A1 (de) * | 1989-08-30 | 1991-03-07 | Merck Patent Gmbh | Halogenierte benzolderivate und fluessigkristallines medium |
DE69015183T2 (de) * | 1990-09-05 | 1995-05-04 | Merck Patent Gmbh | Nematische Flüssigkristallzusammensetzung für Aktiv-Matrix-Anwendung. |
DE4123539A1 (de) * | 1991-07-16 | 1993-01-21 | Merck Patent Gmbh | Fluessigkristallines medium |
US5520846A (en) * | 1991-07-16 | 1996-05-28 | Merck Patent Gesellschaft Mit Beschrankter Haftung | Liquid-crystalline medium |
US5578241A (en) * | 1993-05-18 | 1996-11-26 | Merck Patent Gesellschaft Mit Beschrankter Haftung | Liquid crystal display |
DE4426905A1 (de) * | 1993-08-09 | 1995-02-16 | Merck Patent Gmbh | Nematische Flüssigkristallzusammensetzung für aktive Matrixanwendungen |
US5431850A (en) * | 1993-08-09 | 1995-07-11 | Merck Patent Gensellschaft Mit Beschrankter Haftung | Nematic liquid-crystal composition for active matrix application |
JP3389697B2 (ja) * | 1994-09-06 | 2003-03-24 | チッソ株式会社 | 液晶組成物およびこれを用いた液晶表示素子 |
-
1995
- 1995-05-30 TW TW084105531A patent/TW294714B/zh not_active IP Right Cessation
-
1996
- 1996-02-17 EP EP96934818A patent/EP0770117B1/en not_active Expired - Lifetime
- 1996-02-17 WO PCT/EP1996/004787 patent/WO1996041847A1/en active IP Right Grant
- 1996-02-17 JP JP53436796A patent/JP3751319B2/ja not_active Expired - Fee Related
- 1996-02-17 CN CN96190658A patent/CN1076041C/zh not_active Expired - Fee Related
- 1996-02-17 US US08/776,503 patent/US5753142A/en not_active Expired - Lifetime
- 1996-02-17 DE DE69605751T patent/DE69605751D1/de not_active Expired - Lifetime
- 1996-02-17 KR KR1019970708736A patent/KR100385533B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPH10506149A (ja) | 1998-06-16 |
KR19990022257A (ko) | 1999-03-25 |
JP3751319B2 (ja) | 2006-03-01 |
EP0770117A1 (en) | 1997-05-02 |
EP0770117B1 (en) | 1999-12-22 |
KR100385533B1 (ko) | 2003-08-21 |
WO1996041847A1 (en) | 1996-12-27 |
DE69605751D1 (de) | 2000-01-27 |
CN1157005A (zh) | 1997-08-13 |
TW294714B (zh) | 1997-01-01 |
US5753142A (en) | 1998-05-19 |
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