WO1994003558A1 - Liquid crystal composition and liquid crystal display device made therefrom - Google Patents
Liquid crystal composition and liquid crystal display device made therefrom Download PDFInfo
- Publication number
- WO1994003558A1 WO1994003558A1 PCT/JP1993/001106 JP9301106W WO9403558A1 WO 1994003558 A1 WO1994003558 A1 WO 1994003558A1 JP 9301106 W JP9301106 W JP 9301106W WO 9403558 A1 WO9403558 A1 WO 9403558A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- general formula
- compound
- liquid crystal
- dfp
- component
- Prior art date
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Classifications
-
- 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
-
- 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
- C09K19/06—Non-steroidal liquid crystal compounds
- 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
- C09K19/3001—Cyclohexane rings
Definitions
- the present invention relates to a liquid crystal composition for a liquid crystal display and a liquid crystal display device using the same. More specifically, the present invention relates to an active matrix type nematic liquid crystal composition for liquid crystal display requiring high reliability, and a liquid crystal display device using the same.
- LCD liquid crystal display
- high-definition high-contrast
- high-speed response the display method has been studied.
- active matrix LCDs such as TFTs (thin film transistors)
- TFTs thin film transistors
- CRT CRT
- active research is being conducted on various elements that make up the AM-LCD, such as the imperial circuit, switching Shiko, and color filters.
- liquid crystal materials are required to have characteristics that cannot be satisfied with conventional material systems having a cyano group, such as biphenyl and PCH systems.
- a terminal group or a cyano group of a side group has a certain phase with an ionic impurity present in a display element. We believe that the interaction has an adverse effect on the flow rate, the specific resistance, and the display contrast.
- the disadvantages of this compound having a cyano group are that the reliability of the device is reduced, the current consumption is increased due to the drive current of the two-terminal and three-terminal switch devices, and the specific resistivity is increased. In terms of display characteristics, uneven display and lower contrast are caused.
- the contrast in the TFT liquid crystal display device shown in FIG. 1 is closely related to its signal voltage holding characteristics.
- the signal tilt pressure holding characteristic of the liquid crystal display element indicates a degree of reduction in the signal tilt pressure applied to the TFT pixels including the liquid crystal within a predetermined frame period. If there is no decrease in the signal input pressure, no contrast drop occurs.
- the signal voltage holding characteristic of the display element becomes synergistically worse as the specific resistance of the storage capacitor (C,) provided in parallel with the liquid crystal and the liquid crystal (LC) or the signal holding pressure holding ratio decreases.
- the specific resistance of the liquid crystal or the signal voltage holding ratio is lower than a certain lower limit, the signal free pressure holding characteristic of the display element is exponentially degraded, resulting in a fine contrast reduction.
- a storage capacitor is not added for reasons such as simplification of the TFT manufacturing process, the contribution of the storage capacitor cannot be expected, and a liquid crystal composition having a particularly high specific resistance or signal voltage holding ratio is required.
- the signal voltage holding ratio of the liquid crystal composition which greatly affects the signal voltage holding characteristics of the liquid crystal display element and the measurement thereof will be described.
- the signal voltage retention of the cell containing the liquid crystal composition is measured.
- the liquid crystal cell is measured using a glass substrate having a transparent electrode and an alignment film.
- the waveform at the time of flij is shown in FIG.
- the shaded portion of V is the actual observation waveform.
- the signal voltage holding ratio is represented by the following equation.
- a liquid crystal composition for AM-LCD composed of only a compound having no cyano group is disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 2-289682. Further, among the compositions included in the TN composition disclosed in JP-A-63-61083, a composition comprising only a compound having no cyano group is particularly preferred. It is widely used for LCDs.
- the LCD using these compositions has a high threshold voltage and is not suitable for low-voltage driving, so that it is difficult to drive 5 V alone, and it is a portable device that is battery-driven. It is not enough as a spray.
- the viscosity is high, the response time is slow, the display quality is degraded when displaying moving images, and it cannot respond to mass scrolling in OA applications.
- An object of the present invention is to provide a liquid crystal composition having a relatively low viscosity while maintaining a high specific resistance value and a low consumption current, and a low threshold voltage, and a contrast using the same.
- An object of the present invention is to provide a liquid crystal display device that is highly reliable, has a relatively fast response time, and can be driven at a low voltage.
- the present invention provides a liquid crystal composition comprising the following first component and second component: And a liquid crystal display device using the liquid crystal composition,
- R is an alkyl group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms (one or two non-adjacent carbon atoms in these groups are an oxygen atom, —Or one COO—).
- S and S, and S which may be the same or different, each represent a fluorine atom, one C HF, one O C HF, one C F, or one O C F,
- A, B and C may be the same or different, and each is a trans cyclohexane ring:
- C H— in the ring may be replaced by a nitrogen atom, and 15 hydrogen atoms may be replaced by a fluorine atom).
- 1, m, and n may be the same or different, and each is 0 or 1, and 1 + m + n ⁇ 1)
- R represents an alkyl group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms.
- one or two non-adjacent carbon atoms represent Oxygen atom, which may be replaced by one C 0— or one COO—)
- X i represents a fluorine atom, one CF, one OCF, or one CHF,
- Y represents a hydrogen atom or a fluorine atom
- At least one compound represented by At least one compound represented by).
- Figure 1 shows an equivalent circuit of the TFT display element.
- Figure 2 shows a circuit for measuring the signal pressure retention rate of a liquid crystal cell.
- Figure 3 shows the driving waveform and the setting waveform when the signal voltage holding ratio of the liquid crystal cell is determined.
- R is an alkyl group having 1 to 10 carbon atoms (one or two non-adjacent carbon groups in the group) The atom may be replaced by an oxygen atom)
- A, B, and C may be the same or different and each is a transcyclohexane ⁇ or benzene ring (these hydrogen atoms may be replaced by fluorine atoms. (Other symbols are the same as defined above.)
- At least one compound is preferably used.
- R is an alkyl group having 1 to 10 carbon atoms (one or two non-adjacent carbon atoms in the group may be replaced by oxygen atoms),
- X i is 1 F, 1 C F, or 1 0 C F, (other symbols are as defined above),
- At least one compound is preferably used.
- ⁇ ⁇ , ⁇ , may be the same or different and each represents one COO—, one CH, CH, one, —CH—CH—, an ethynylene group or a single bond. Same as the definition).
- Z, ⁇ , ,, ⁇ , ⁇ , ⁇ , may be the same or different, and each represents one COO—, one CH, CH, —, one CH-CH—, ethynylene group, or single bond.
- R 1 CH CH— TP (Ia7G)
- TFP (0> — C ⁇ C— TP (Ia7J)
- DDP DDP
- DOP TDP
- TOP DTP
- TTP TOP
- the following compounds are preferably used among the above compounds.
- R is a straight-chain alkyl group having 1 to 10 carbon atoms or a straight-chain alkyl group.
- One ⁇ Alkoxy groups are preferred, and in particular, those in which R, is a straight-chain alkyl group having 1 to 5 carbon atoms or a straight-chain alcohol group are preferred.
- R is a straight-chain alkyl group or a straight-chain alkoxy group having 1 to 10 carbon atoms, particularly R, is a straight-chain alkyl group having 1 to 5 carbon atoms. Preferred are alkyl groups and straight-chain alkoxy groups.
- the following compounds are preferably used.
- R is a straight-chain alkyl group having 1 to 10 carbon atoms or a straight-chain alkoxy group, particularly where R, is a straight-chain alkyl group having 1 to 5 carbon atoms or Alkoxy groups are preferred.
- the compound represented by the above general formula (I) is a known compound as described in, for example, Japanese Patent Application Laid-Open No. 2-2333626, and has a high clearing point and a wide liquid crystal phase. It is characterized by low viscosity and relatively large dielectric anisotropy.
- R in the above formulas (IblA), (IblB) and (Ib1C) is a straight-chain alkyl group having 3 carbon atoms (provyl).
- Preferred examples of the compound represented by the above general formula (II) as the second component of the present invention are as follows.
- R 9 (H ⁇ COO ⁇ ⁇ DFP ( ⁇ N)
- R is as defined above, and 0 represents the following formula ⁇ Of the above compounds, the following compounds are preferably used.
- R 2 (H> — COO— F (IC)
- R is a straight-chain alkyl group or straight-chain alkoxy group having 1 to 10 carbon atoms
- R is a straight-chain alkyl group having 1 to 7 carbon atoms.
- Those which are alkyl groups or alkoxy groups are preferred.
- compounds represented by the above general formula (II) compounds in which R, in the above formulas (IIA :), (IIB) and (IIC) are a straight-chain alkyl group (pentyl group) having 5 carbon atoms.
- the compound represented by the above general formula (II) is described in, for example, JP-A-2-111173, JP-A-61-207347, and W8990288. It is well known.
- the liquid crystal composition of the present invention may contain the following third component in addition to the first component and the second component.
- R is the same as R, in general formula (I),
- A has the same meaning as A in the general formula (I),
- Z represents one COO—, —CH, CH, —, one CH—CH— or a single bond
- ⁇ ⁇ represents one COO—, one CH, CH a—
- one CH CH—, ethynylene group Or a single bond
- X is full Tsu atom, showing one CF ,, one OCF ,, one CHF or a 0 CHF a,, Y, is (are as defined Y, and the II>)
- one of the liquid crystal compositions of the present invention contains the above-described first component, second component, and third component.
- R is an alkyl group having 1 to 10 carbon atoms (one or two non-adjacent carbon violet atoms in the group may be replaced by an oxygen atom),
- A is trans-cyclohexane S or benzene (the hydrogen atoms in these rings may be replaced by fluorine atoms),
- X is a fluorine atom or 1 C F, (other symbols are as defined above). At least one compound is preferably used.
- R is a straight-chain alkyl group having 1 to 10 carbon atoms or a straight-chain alcohol group.
- the liquid crystal composition of the present invention may contain the following fourth component in addition to the above first component, second component and third component.
- R R which may be the same or different, are each the same as R, in formula (I),
- A has the same meaning as A in the general formula (I),
- one of the liquid crystal compositions of the present invention contains the above-mentioned first component, second component, third component and fourth component.
- R ⁇ and R may be the same or different and each is an alkyl group having 1 to 10 carbon atoms (even if one or two non-adjacent carbon atoms in the group are replaced with oxygen atoms) Good)
- At least one compound is preferably used.
- R 4 - ⁇ H - ⁇ Oh -OCO- H -Rc (WL) Of the above compounds, the following compounds are preferably used, Among the above compounds, R 4 and R are straight-chain alkyl groups having 1 to 10 carbon atoms or straight-chain alkoxy groups. Those having 1 to 5 straight-chain alkyl groups or straight-chain alkoxy groups are preferably used.
- the compound represented by the above general formula (IV) is described in, for example, JP-A-57-16532, JP-A-63-152334, and DE29272777. It is known as. It has features such as a high clearing point, a low viscosity, and a neutral dielectric anisotropy. Practically, the use of these compounds in the liquid crystal composition of the present invention is suitably 30% by weight or less in consideration of the increase in threshold voltage due to the addition of these compounds.
- the liquid crystal composition of the present invention may contain the following fifth component in addition to the above first component, second component, third component and fourth component.
- R 1, R 2 may be the same or different and each has the same meaning as in general formula (I);
- A has the same meaning as A in the general formula (I),
- one of the liquid crystal compositions of the present invention contains the above-mentioned first component, second component, third component, fourth component and fifth component.
- R. R T may be the same or different, and each has 1 to 10 carbon atoms, wherein one or two non-adjacent carbon atoms are an oxygen atom, one CO— or one C 0 0—).
- a and B may be the same or different and each represents a transcyclohexane ring or a benzene atom (one or two -CH— in ⁇ are replaced by nitrogen atoms) And the hydrogen atom in ⁇ may be replaced by a fluorine atom)
- At least one compound is preferably used.
- R, R ⁇ are a straight-chain alkyl group or a straight-chain alkoxy group having 1 to 10 carbon atoms, in particular, R, and R, each having 1 to 10 carbon atoms Those which are straight-chain alkyl groups or straight-chain alkoxy groups of No. 5 are preferably used.
- the liquid crystal composition of the present invention may include, in addition to the above-described first to fifth components, a threshold voltage in voltage-transmittance characteristics, a liquid crystal temperature range, and a refractive index difference.
- a threshold voltage in voltage-transmittance characteristics for the purpose of adjusting the anisotropy, dielectric anisotropy, viscosity and the like, other liquid crystal compounds or liquid crystal compounds can be contained in an appropriate amount within a range not to impair the object of the present invention. Specific examples of such a compound include the following compounds.
- R and R 'each represent an alkyl group or an alkoxy group having 1 to 10 carbon atoms.
- the proportion of the first component and the second component used is 15 to 97% by weight and 3% by weight, respectively, based on the total weight of the composition.
- the use ratio of the first component, the second component, and the third component is as follows: 15 to 97% by weight, 3 to 30% by weight and 5 to 90% by weight, preferably 30 to 90% by weight, 5 to 25% by weight and 5 to 55% by weight, and the total amount of these components is at least 50% by weight, and preferably at least 60% by weight.
- a liquid crystal composition containing the first component, the second component, the third component, and the fourth component, wherein the first component, the second component, the third component, and the fourth component
- the proportions of the components used are 15 to 97% by weight, 3 to 30% by weight, 5 to 90% by weight and 3 to 30% by weight, preferably 30 to 70% by weight, respectively, based on the total weight of the composition.
- a liquid crystal composition containing the first component, the second component, the third component, the fourth component, and the fifth component, wherein the first component, the second component, and the The use of the third component, the fourth component and the fifth component is 15 to 97% by weight, 3 to 30% by weight, 5 to 90% by weight, and 3 to 3% by weight, respectively, based on the total weight of the composition.
- the liquid crystal composition of the present invention has a characteristic that the threshold pressure is low while maintaining high specific resistance, low current consumption, and low viscosity. Therefore, the liquid crystal composition of the present invention can be suitably used for a liquid crystal display device, particularly for AMLCD.
- the liquid crystal display device of the present invention using the liquid crystal composition having the above characteristics has high contrast, high reliability, fast response speed, and can be driven at a low voltage. It has the characteristics of Therefore, it is possible to provide a high-quality liquid crystal display device that can support high-quality moving image display and mouse-skipping and that can easily drive a battery.
- Threshold pressure (voltage transmittance characteristic)
- the threshold voltage is the free pressure (absorption rate 10%) when the transmittance of light in the direction of the optical axis perpendicular to the display surface becomes 90%. Indicated by
- the liquid crystal After the liquid crystal is injected into a liquid cell (model LE-21) manufactured by Jiki Ando Co., Ltd., a PA meter manufactured by HP and a DC voltage source (model HP 414) are used.
- 0 B) is a value obtained by applying a DC voltage of 10 V, and the initial value is p. (Q cm), the temperature after heating test (100 hours) is represented by pH.
- the liquid crystal for the heating test was stored in a glass container made of Pyrex at 80 ° C under a nitrogen gas atmosphere. It is generally considered that 1000 hours as the heating test time is a time that shows a value close to the saturation value.
- Signal voltage holding rate ( ⁇ ,- ⁇ ,- ⁇ ,- ⁇ ,) ⁇ [(V,) (t,-t 2 )] where (V, — t, 1 t, 1 V 2 )
- the hatched portion, V indicates the source voltage
- (t.-t,) indicates the application time.
- the measurement of the signal retention was measured at room temperature (20 ° C) and at 80 ° C. C went.
- the first component (the compound of the general formula (I)) was not used.
- the first component (the compound of the general formula (I)) was not used.
- the first component (compound of general formula (I)) and the second component (compound of general formula (II)) were not used.
- the first component (the compound of the general formula (I)) was not used.
- the first component (the compound of the general formula (I)) was not used.
- the second component (compound of the general formula (II)) was not used here—as a compound of the general formula (I)
- a liquid crystal composition comprising C3 ⁇ 4OCH 2 ⁇ ⁇ HWH ⁇ C 3 H 5.0% was prepared.
- a liquid crystal composition comprising C-, ⁇ 15 "H> — 10.0% DFP was prepared (
- a liquid crystal composition comprising C, H, 5- (H>-(H> -COO- ⁇ O> -F 2.5%) was prepared.
- a liquid crystal composition comprising H i 5- ⁇ HH > ⁇ c ⁇ ⁇ ⁇ F 2.5% was prepared.
- a liquid crystal composition comprising CH 3 OCH 2- ⁇ H HV-C 3 H- 4.7% was prepared.
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- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Liquid Crystal Substances (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94906780A EP0656412A4 (en) | 1992-08-06 | 1993-08-06 | LIQUID CRYSTAL COMPOSITION AND DISPLAY USING THE SAME. |
AU47608/93A AU4760893A (en) | 1992-08-06 | 1993-08-06 | Liquid crystal composition and liquid crystal display device made therefrom |
KR1019950700429A KR950703040A (ko) | 1992-08-06 | 1993-08-06 | 액정 조성물 및 이로부터 제조된 액정 디스플레이 장치(liquid crystal composition and liquid crystal display device made therefrom) |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4/229380 | 1992-08-06 | ||
JP22938092 | 1992-08-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994003558A1 true WO1994003558A1 (en) | 1994-02-17 |
Family
ID=16891275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1993/001106 WO1994003558A1 (en) | 1992-08-06 | 1993-08-06 | Liquid crystal composition and liquid crystal display device made therefrom |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0656412A4 (ja) |
KR (1) | KR950703040A (ja) |
CN (1) | CN1085591A (ja) |
AU (1) | AU4760893A (ja) |
WO (1) | WO1994003558A1 (ja) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5431850A (en) * | 1993-08-09 | 1995-07-11 | Merck Patent Gensellschaft Mit Beschrankter Haftung | Nematic liquid-crystal composition for active matrix application |
EP0704512A1 (en) | 1994-09-06 | 1996-04-03 | Chisso Corporation | A liquid crystal composition and a liquid crystal display element using the same |
WO1996023851A1 (de) * | 1995-02-03 | 1996-08-08 | Merck Patent Gmbh | Elektrooptische flüssigkristallanzeige |
EP0728830A2 (en) * | 1995-02-22 | 1996-08-28 | Chisso Corporation | Liquid crystal composition and liquid crystal display device |
WO1996032458A1 (fr) * | 1995-04-12 | 1996-10-17 | Chisso Corporation | Composition de cristaux liquides et afficheur a cristaux liquides |
EP0844295A1 (en) * | 1996-11-22 | 1998-05-27 | Chisso Corporation | Liquid crystal composition and liquid crystal display element |
US5855814A (en) * | 1995-02-09 | 1999-01-05 | Chisso Corporation | Liquid crystal compositions and liquid crystal display elements |
JPH11501692A (ja) * | 1995-03-15 | 1999-02-09 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフトング | 電気光学液晶ディスプレイ |
US6007740A (en) * | 1996-11-22 | 1999-12-28 | Chisso Corporation | Polyhaloalkyl ether derivatives as well as liquid crystal compositions and liquid crystal display elements containing them |
WO2000017287A1 (fr) * | 1998-09-21 | 2000-03-30 | Dainippon Ink And Chemicals, Inc. | Composition de cristaux liquides nematiques et ecran a cristaux liquides utilisant cette composition |
Families Citing this family (5)
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JP3682796B2 (ja) * | 1995-12-27 | 2005-08-10 | チッソ株式会社 | 液晶表示素子及び液晶組成物 |
DE102004049997B4 (de) * | 2003-11-06 | 2014-11-20 | Merck Patent Gmbh | Flüssigkristallmedium und dessen Verwendung in elektrooptischen Anzeigen |
CN103130649B (zh) * | 2011-10-24 | 2014-10-22 | 财团法人工业技术研究院 | 液晶化合物以及液晶显示器 |
CN104178179B (zh) * | 2014-07-17 | 2016-09-28 | 北京大学 | 一种宽温域低粘度的向列相液晶材料 |
CN113736477B (zh) * | 2020-05-27 | 2024-08-06 | 江苏和成显示科技有限公司 | 一种液晶组合物和液晶显示器件 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02233626A (ja) * | 1989-03-07 | 1990-09-17 | Chisso Corp | トリフルオロベンゼン誘導体 |
DE4027840A1 (de) * | 1989-09-06 | 1991-03-07 | Merck Patent Gmbh | Fluorbenzolderivate und fluessigkristallines medium |
DE4106345A1 (de) * | 1990-03-23 | 1991-09-26 | Merck Patent Gmbh | Halogenbenzolderivate |
WO1991015555A2 (en) * | 1990-04-02 | 1991-10-17 | MERCK Patent Gesellschaft mit beschränkter Haftung | Nematic liquid crystal mixtures and a matrix liquid crystal display |
DE4111990A1 (de) * | 1990-04-19 | 1991-10-24 | Merck Patent Gmbh | Di- und trifluortolane |
GB2253403A (en) * | 1991-03-05 | 1992-09-09 | Merck Patent Gmbh | Terminally and laterally fluorinated components for liquid crystal compositions |
JPH05105876A (ja) * | 1991-03-04 | 1993-04-27 | Sharp Corp | ネマチツク液晶組成物 |
-
1993
- 1993-08-05 CN CN93117791A patent/CN1085591A/zh active Pending
- 1993-08-06 WO PCT/JP1993/001106 patent/WO1994003558A1/ja not_active Application Discontinuation
- 1993-08-06 EP EP94906780A patent/EP0656412A4/en not_active Withdrawn
- 1993-08-06 AU AU47608/93A patent/AU4760893A/en not_active Abandoned
- 1993-08-06 KR KR1019950700429A patent/KR950703040A/ko not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02233626A (ja) * | 1989-03-07 | 1990-09-17 | Chisso Corp | トリフルオロベンゼン誘導体 |
DE4027840A1 (de) * | 1989-09-06 | 1991-03-07 | Merck Patent Gmbh | Fluorbenzolderivate und fluessigkristallines medium |
DE4106345A1 (de) * | 1990-03-23 | 1991-09-26 | Merck Patent Gmbh | Halogenbenzolderivate |
WO1991015555A2 (en) * | 1990-04-02 | 1991-10-17 | MERCK Patent Gesellschaft mit beschränkter Haftung | Nematic liquid crystal mixtures and a matrix liquid crystal display |
DE4111990A1 (de) * | 1990-04-19 | 1991-10-24 | Merck Patent Gmbh | Di- und trifluortolane |
JPH05105876A (ja) * | 1991-03-04 | 1993-04-27 | Sharp Corp | ネマチツク液晶組成物 |
GB2253403A (en) * | 1991-03-05 | 1992-09-09 | Merck Patent Gmbh | Terminally and laterally fluorinated components for liquid crystal compositions |
Non-Patent Citations (1)
Title |
---|
See also references of EP0656412A4 * |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5431850A (en) * | 1993-08-09 | 1995-07-11 | Merck Patent Gensellschaft Mit Beschrankter Haftung | Nematic liquid-crystal composition for active matrix application |
EP0704512A1 (en) | 1994-09-06 | 1996-04-03 | Chisso Corporation | A liquid crystal composition and a liquid crystal display element using the same |
WO1996023851A1 (de) * | 1995-02-03 | 1996-08-08 | Merck Patent Gmbh | Elektrooptische flüssigkristallanzeige |
JP2006299273A (ja) * | 1995-02-03 | 2006-11-02 | Merck Patent Gmbh | 電気光学的液晶ディスプレイ |
JP2006283031A (ja) * | 1995-02-03 | 2006-10-19 | Merck Patent Gmbh | 電気光学的液晶ディスプレイ |
US5855814A (en) * | 1995-02-09 | 1999-01-05 | Chisso Corporation | Liquid crystal compositions and liquid crystal display elements |
EP0728830A3 (ja) * | 1995-02-22 | 1996-09-04 | Chisso Corp | |
EP0728830A2 (en) * | 1995-02-22 | 1996-08-28 | Chisso Corporation | Liquid crystal composition and liquid crystal display device |
JPH11501692A (ja) * | 1995-03-15 | 1999-02-09 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフトング | 電気光学液晶ディスプレイ |
US5733477A (en) * | 1995-04-12 | 1998-03-31 | Chisso Corporation | Liquid crystal composition and liquid crystal display element |
WO1996032458A1 (fr) * | 1995-04-12 | 1996-10-17 | Chisso Corporation | Composition de cristaux liquides et afficheur a cristaux liquides |
EP0844295A1 (en) * | 1996-11-22 | 1998-05-27 | Chisso Corporation | Liquid crystal composition and liquid crystal display element |
US5961881A (en) * | 1996-11-22 | 1999-10-05 | Chisso Corporation | Liquid crystal composition and liquid crystal display element |
US6007740A (en) * | 1996-11-22 | 1999-12-28 | Chisso Corporation | Polyhaloalkyl ether derivatives as well as liquid crystal compositions and liquid crystal display elements containing them |
US6187223B1 (en) | 1996-11-22 | 2001-02-13 | Chisso Corporation | Polyhaloalkyl ether derivatives as well as liquid crystal compositions and liquid crystal display elements containing them |
WO2000017287A1 (fr) * | 1998-09-21 | 2000-03-30 | Dainippon Ink And Chemicals, Inc. | Composition de cristaux liquides nematiques et ecran a cristaux liquides utilisant cette composition |
US7198827B1 (en) | 1998-09-21 | 2007-04-03 | Dainippon Ink And Chemicals, Inc. | Nematic liquid crystal composition and liquid crystal display device using the same |
Also Published As
Publication number | Publication date |
---|---|
CN1085591A (zh) | 1994-04-20 |
KR950703040A (ko) | 1995-08-23 |
EP0656412A1 (en) | 1995-06-07 |
EP0656412A4 (en) | 1995-12-06 |
AU4760893A (en) | 1994-03-03 |
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