WO2004083340A1 - 液晶組成物 - Google Patents
液晶組成物 Download PDFInfo
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- WO2004083340A1 WO2004083340A1 PCT/JP2004/003574 JP2004003574W WO2004083340A1 WO 2004083340 A1 WO2004083340 A1 WO 2004083340A1 JP 2004003574 W JP2004003574 W JP 2004003574W WO 2004083340 A1 WO2004083340 A1 WO 2004083340A1
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- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
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- 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
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- 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
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- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/32—Non-steroidal liquid crystal compounds containing condensed ring systems, i.e. fused, bridged or spiro ring systems
- C09K19/322—Compounds containing a naphthalene ring or a completely or partially hydrogenated naphthalene ring
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- 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
- C09K2019/0444—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group
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- 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
- C09K19/32—Non-steroidal liquid crystal compounds containing condensed ring systems, i.e. fused, bridged or spiro ring systems
- C09K19/322—Compounds containing a naphthalene ring or a completely or partially hydrogenated naphthalene ring
- C09K2019/325—Compounds containing a naphthalene ring or a completely or partially hydrogenated naphthalene ring containing a tetrahydronaphthalene, e.g. -2,6-diyl (tetralin)
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- 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
- C09K19/32—Non-steroidal liquid crystal compounds containing condensed ring systems, i.e. fused, bridged or spiro ring systems
- C09K19/322—Compounds containing a naphthalene ring or a completely or partially hydrogenated naphthalene ring
- C09K2019/326—Compounds containing a naphthalene ring or a completely or partially hydrogenated naphthalene ring containing a decahydronaphthalene, e.g. -2,6-diyl (decalin)
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- C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
Definitions
- the present invention relates to a nematic liquid crystal composition useful as an electro-optical liquid crystal display material, and a liquid crystal display device using the same.
- liquid crystal display devices such as twisted nematic, super twisted nematic or active matrix, especially in small and medium-sized portable liquid crystal display devices
- the stability of the display with respect to the operating temperature is an important point.
- demand for reflective or transflective liquid crystal display elements that do not require a backlight to increase power consumption has increased, and in order to improve display quality, refractive index anisotropy has been reduced and liquid crystal materials have to be used. It has been demanded.
- liquid crystal compounds having a trifluoromethoxy group are already known. Such compounds and liquid crystal compositions using them are disclosed (see Patent Documents 1 and 2). According to the document, it has excellent compatibility with liquid crystal compounds or compositions, low viscosity, high-speed response, low threshold voltage, low voltage driving, low refractive index anisotropy, and voltage holding. There is a description that it can be used as a nematic liquid crystal composition which has a high rate and can sufficiently drive an active matrix. However, there is a specific structure for realizing a liquid crystal composition having an extremely small refractive index anisotropy required for reflective and transflective liquid crystal display elements while maintaining other liquid crystal properties in good condition. Is not disclosed.
- liquid crystal composition having a small refractive index anisotropy using a liquid crystal compound having a trifluoromethoxy group has already been known, and specific examples of preferred compounds have been disclosed (see Patent Document 4).
- this composition cannot be used as a practical liquid crystal composition because the minimum temperature of the liquid crystal phase is high.
- Patent Document 1 German Patent Application Publication No. 402031107 (refer to claim 1 on page 2)
- Patent Document 2 Japanese Patent Application Laid-Open No. 2005-2530861 (from page 8)
- Patent Reference 3 Japanese Patent Application Laid-Open No. H10-218885 (refer to Examples from page 8)
- Patent Reference 4 Japanese Patent Application Laid-Open No. 2002-53333 / 26 (3)
- One of the objects of the present invention is to provide a nematic liquid crystal composition having a wide nematic liquid crystal phase temperature range, a low threshold voltage, a low viscosity, and a small refractive index anisotropy. To do that.
- Another object of the present invention is to provide a display element using the liquid crystal composition as a constituent member and having excellent quality, particularly in a reflective or transflective mode. Disclosure of the invention
- the liquid crystal compound means the following two compounds.
- the nematic liquid crystal composition according to the first embodiment of the present invention has a trans-4-trifluoromethoxycyclohexyl group in the skeleton and has 2 to 4 cyclohexene rings in the molecule. And at least one liquid crystal compound having an absolute value of ⁇ of less than 1;
- the viscosity at C is 25 mPa's or less, the threshold voltage at 25 ° C is 1.9 V or less, and the difference between the upper limit temperature of the liquid crystal phase and the lower limit temperature of
- a liquid crystal display device is a liquid crystal display device using the liquid crystal composition.
- the nematic liquid crystal composition of the present invention has a wide liquid crystal phase temperature range, a low threshold voltage, a low viscosity, and a small refractive index anisotropy.
- the liquid crystal composition can provide a display element having excellent display quality when used as a constituent member of an active matrix liquid crystal display element, particularly, a reflective or transflective liquid crystal display element.
- FIG. 1 is an enlarged view showing an example of the liquid crystal display device according to the present invention.
- the nematic liquid crystal composition of one embodiment of the present invention has, as a first component, a trans-4-hexafluorohexyl hexyl group in the skeleton, and the number of cyclohexane rings in the molecule is 2 to 4. Contains at least one compound. Specifically, it is preferable to contain a compound represented by the following general formula (I) as the first component.
- R 1 is an alkyl group having 1 to 10 carbon atoms, an alkoxyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or a alkenyl group having 2 to 10 carbon atoms.
- Z 1 and Z 2 each independently represent one C00—, one C0—, one CH 2 CHCH 2 —, one CH 2 CH 2 —, or a single bond, and n represents 0. Or represents 1.
- R 1 is preferably a linear alkyl group having 1 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms, and the alkenyl group has the following structure (1) to (5) Is more preferred.
- a compound represented by the following general formula is more preferable.
- R 1 has the same meaning as in general formula (I).
- R 6 represents an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or an alkenyl group having 2 to 8 carbon atoms.
- the liquid crystal composition of this embodiment preferably contains 1 to 8 kinds of compounds having a trans-4-trifluoromethoxycyclohexyl group in the skeleton, more preferably 1 to 6 kinds. It is particularly preferable to contain 1 to 4 types.
- the content is preferably in the range of 5 to 50% by mass, and particularly preferably in the range of 10 to 40% by mass.
- the compound of the first component has the effect of increasing the viscosity but lowering the threshold voltage, and it is preferable that the content of these compounds is small when emphasizing low viscosity, and that the content is low when emphasizing low threshold voltage. Is preferably high.
- the nematic liquid crystal composition of this embodiment contains a compound having an absolute value of ⁇ of less than 1 as a second component. Specifically, it is preferable to contain a compound represented by the general formula (II) as the second component.
- an alkyl group having 1 to 15 carbon atoms an alkyl group having 1 to 15 carbon atoms substituted with at least one halogen, and an alkenyl group having 2 to 15 carbon atoms.
- an alkenyl group having 2 to 15 carbon atoms substituted by at least one halogen, and one or more CH 2 groups present in these groups each independently have an oxygen atom It may be replaced by an oxygen atom, a sulfur atom, —CO—, —C00—, —0C0—, or —0C0-0— as not directly bonded.
- B ', B 2 and B 3 represent each independently (a) a group selected from the group consisting of ⁇ (c) below. (a) trans-1,4-cyclohexylene group (one CH 2 group present in this group or two or more non-adjacent CH 2 groups may be replaced by an oxygen atom or a sulfur atom Good.)
- the above group (a), group (b) and group (c) may be substituted by a cyano group or a halogen.
- 1 represents 0 or 1.
- R 2 and are preferably each independently an unsubstituted linear alkyl group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms.
- Unsubstituted linear alkyl groups having 1 to 8 carbon atoms or alkenyl groups having 2 to 6 carbon atoms are more preferred.
- alkenyl groups the structures of formulas (1) to (5) are particularly preferred.
- R 2 and R 3 may be the same or different, but it is more preferable that R 2 and R 3 in the same molecule are different.
- BB 2 and B 3 each independently represent trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene, 3,5-difluoro-1 , 4-phenylene, or deca.lonaphthalene-2,6-diyl.
- a trans-1,4-cyclohexylene group, a 1,4-phenylene group, or decahydronaphthalene-2,6-diyl is more preferred.
- a trans-1,4-cyclohexylene group is particularly preferred.
- the general formula (II) is more preferably one of the structures represented by the general formulas listed below.
- Nematic liquid crystal composition The product preferably contains from 1 to 12 types of compounds having an absolute value of ⁇ of less than 1, more preferably from 1 to 8 types, and more preferably from 1 to 6 types. Particularly preferred. Their content is 5 mass. /. From 50 mass. /. It is preferable that
- the compound of the second component has no effect of lowering the threshold voltage, but has an effect of lowering the viscosity.
- the content of these compounds is large, and when importance is attached to low threshold voltage, it is preferable that the content of these compounds is small.
- the nematic liquid crystal composition of this embodiment further comprises, as a third component, A 2,6-diyl group, a decahydronaphthalene-2,6_diyl group, or a 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, and the absolute value of ⁇ is 1
- a 2,6-diyl group a decahydronaphthalene-2,6_diyl group, or a 1,2,3,4-tetrahydronaphthalene-2,6-diyl group
- the absolute value of ⁇ is 1
- the above compound or at least one compound in which the number of 6-membered rings in the skeleton is 4, and the absolute value of ⁇ is 1 or more.
- the compound having a value of 1 or more specifically contains at least one of the compounds represented by the following general formulas (Ilia), (Illb) and (IIIc).
- CC 2 and C 3 each independently represent a group selected from the group consisting of the following (d), (e), and (f).
- At least one of the groups (d), (e) and (f) may be substituted with a cyano group or halogen.
- X 4 , X 5 and X 6 each independently represent a hydrogen atom or a fluorine atom.
- p and q each independently represent 0 or 1.
- X 2 is a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a difluoromethyl group, a fluoromethyoxy group, a difluoromethoxy group, a trifluoromethoxy group, a 2,2,2-trifluoroethyl group , Or R 4 represents the same definition. )
- R 4 is an unsubstituted linear alkyl group having 1 to 15 carbon atoms or an alkenyl group having 2 to 15 carbon atoms.
- an unsubstituted linear alkyl group having 1 to 8 carbon atoms or an alkenyl group having 2 to 6 carbon atoms is more preferable, and an alkenyl group is particularly preferably a structure of the formulas (1) to (5). ,.
- K 1 , K 2 or K 3 at least one is preferably a single bond.
- C ⁇ C 2 and C 3 each independently represent a trans-1,4-cyclohexylene group, a 1,4-phenylene group, a 3-fluoro-1,4-phenylene group, or a 3,5- It preferably represents a difluoro-1,4-phenylene group, more preferably a trans-1,4-cyclohexylene group or a 1,4-phenylene group, and more preferably a trans-1,4-cyclohexane group. It is particularly preferred to represent a xylene group.
- X 2 preferably represents a fluorine atom, a cyano group, a trifluoromethyl group, a difluoromethyl group, a fluoromethyoxy group, a difluoromethyoxy group, or a trifluoromethyoxy group, more preferably a fluorine atom.
- the compound of the general formula (Ilia) is preferably at least one of the compounds represented by the following general formulas of the first and second groups.
- the first group is as follows.
- R 9 represents an alkenyl group of an alkyl group or an alkoxyl group having 1 to 8 carbon atoms, from 2 carbon atoms 8
- Upsilon ⁇ 1 is Shiano group, a fluorine atom, a chlorine atom, Torifunore Oromechiru group, Jifuruorome Represents a toxyl group or a triphnorelomethoxy group.
- the second group is as follows.
- R 9 represents an alkyl group or an alkoxyl group having 1 to 8 carbon atoms, or an alkenyl group having 2 to 8 carbon atoms.
- the compound of the general formula (Illb) is preferably at least one compound represented by the following general formula.
- R 9 represents an alkyl group or an alkoxyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms
- Y 4 represents a cyano group, a fluorine atom, a chlorine atom, a trifluoromethyl group, a difluoro group. Represents a romethoxy group or a trifluoromethoxy group.
- the compound of the general formula (IIIc) is preferably at least one of the compounds represented by the following general formulas.
- nematic liquid crystal composition of the general formula (iii a), the general formula (Illb) ⁇ Pi formula (selected from the group consisting of Hie) compound may contain 1 two from one It is more preferable to contain 1 to 6 kinds.
- the nematic liquid crystal composition preferably contains a compound having an absolute value of ⁇ of 1 or more, specifically, a compound represented by the following general formula (IV).
- R 5 is a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, an alkyl group having 1 to 15 carbon atoms substituted by at least one halogen, an alkenyl group having 2 to 15 carbon atoms, Or an alkenyl group having 2 to 15 carbon atoms substituted by at least one halogen, and one or more C groups present in these groups each independently represent an oxygen atom Oxygen atoms, sulfur atoms, one CO—, —C00—, one C0—, or one C0—0—may not be directly bonded to each other.
- B 5, B 6 is and B 7,, each independently, represent a group selected from the group consisting of the following (g) and (h).
- X 1 and X 3 each independently represent a hydrogen atom or a fluorine atom.
- X 2 is a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a difluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group, a 2,2,2-trifluoroethyl group Represents the same definition as the group or R 5 .
- R 5 is preferably an unsubstituted linear alkyl group having 1 to 15 carbon atoms or an alkenyl group having 2 to 15 carbon atoms. To 8 alkyl groups or alkenyl groups having 2 to 6 carbon atoms are more preferable.
- the structure of the formulas (1) to (5) is particularly preferable for the phenyl group.
- B 5 and B 6 are each independently a trans-1,4-cyclohexylene group, a 1,4-phenylene group, a 3-fluoro-1,4-phenylene group, or a 3,5- It preferably represents a difluoro-1,4-phenylene group. More preferably, it represents a trans-1,4-cyclohexylene group or a 1,4-phenylene group, particularly preferably a trans-1,4-cyclohexylene group.
- one of X 1 and X 3 represents a fluorine atom.
- X 2 preferably represents a fluorine atom, a cyano group, a trifluoromethyl group, a difluoromethyl group, a fluoromethyoxy group, a difluoromethyoxy group, or a trifluoromethoxy group, more preferably a fluorine atom.
- X 3 and X 4 each independently represent H or F
- Y 4 Represents a cyano group, a fluorine atom, a chlorine atom, a trifluoromethyl group, a difluoromethoxy group or a trifluoromethoxy group.
- the nematic liquid crystal composition preferably contains 1 to 8 types of the compound represented by the general formula (IV), and more preferably 1 to 4 types.
- the nematic liquid crystal composition preferably contains 1 to 20 compounds selected from the group consisting of the general formulas (Ilia), (Illb), (IIIc) and (IV). It is more preferable to contain from 1 to 16 types, and from 1 to 12 types. Is particularly preferred. Their content is 10 mass. /. From 80 mass. /. Is preferred. These compounds have the effect of increasing the viscosity but lowering the threshold voltage, but they have the effect of lowering the threshold voltage.If a low threshold voltage is important, it is preferable that the content of these compounds is high, and if a low viscosity is important, these compounds are effective. It is preferable to reduce the content of the compound.
- the nematic liquid crystal composition of this embodiment comprises a compound represented by the general formula (la), a compound represented by the general formula ( ⁇ ), a general formula (Ilia), a general formula (Illb), and a general formula (IIIc) It preferably contains a compound selected from the group and a compound represented by the general formula (IV).
- the nematic liquid crystal composition contains a compound represented by the general formula (I), the content of which is in the range of 5 to 50% by mass; A compound selected from the group consisting of the general formula (Ilia), the general formula (Illb), and the general formula (IIIc), wherein the content is 5 to 50% by mass; It is particularly preferable that the composition further contains a compound represented by the general formula (IV) and has a content of 5 to 50%.
- the nematic liquid crystal composition further contains a compound represented by the following general formula (V-1) as an additional component.
- R 9 represents an alkyl group or alkoxyl group having 1 to 8 carbon atoms, or an alkenyl group having 2 to 8 carbon atoms.
- I represents a 1,4-phenylene group or a trans-1,4-cyclohexylene group
- X 6 represents a hydrogen atom or a fluorine atom
- n represents 0 or 1.
- Y 4 represents a cyano group, a fluorine atom, a chlorine atom, a trifluoromethyl group, a difluoromethoxy group, or a trifluoromethoxy group. Represents.
- R 9 represents an alkyl group or alkoxyl group having 1 to 8 carbon atoms, or an alkenyl group having 2 to 8 carbon atoms.
- X 3 and X 4 each independently represent a hydrogen atom or a fluorine atom.
- Y 4 represents a cyano group, a fluorine atom, a chlorine atom, a trifluoromethyl group, a difluoromethoxy group or a trifluoromethoxy group.
- the nematic liquid crystal composition of the present embodiment is wide! /, Liquid crystal phase temperature range (absolute value of difference between liquid crystal phase lower limit temperature and liquid crystal phase upper limit temperature).
- the liquid crystal phase temperature range is preferably at least 80 ° C, more preferably at least 90 ° C, particularly preferably at least 100 ° C.
- the upper limit temperature of the liquid crystal phase is preferably 70 ° C. or higher, more preferably 80 ° C. or higher.
- the lower limit temperature of the liquid crystal phase is preferably 120 ° C. or lower, more preferably 130 ° C. or lower.
- the nematic liquid crystal composition of this embodiment has a low threshold voltage effective for a low driving voltage for reducing power consumption, a low viscosity effective for improving a response speed, and a small refractive index effective for a reflective or transflective liquid crystal display element. It has anisotropy.
- the threshold voltage of the nematic liquid crystal composition of this embodiment at 25 ° C. is preferably 1.9 V or less, more preferably 1.7 V or less.
- the viscosity at 20 ° C is preferably 2 S raPa's or less, and more preferably 2 O raPa-s or less.
- the refractive index anisotropy at 25 ° C is preferably in the range of 0.05 to 0.1. More preferably, it is in the range of 0.05 to 0.09, particularly preferably in the range of 0.055 to 0.07.
- the nematic liquid crystal composition of this embodiment is useful for an active matrix liquid crystal display (AM LCD) or a simple matrix type nematic liquid crystal display (STN-LCD), but is particularly useful for an AM-LCD, It can be used for a transflective or reflective liquid crystal display device.
- AM LCD active matrix liquid crystal display
- STN-LCD simple matrix type nematic liquid crystal display
- the nematic liquid crystal composition of this embodiment may contain a normal nematic liquid crystal, a smectic liquid crystal, a cholesteric liquid crystal, and the like, in addition to the above compounds.
- FIG. 1 shows an example of a liquid crystal display device using the above nematic liquid crystal thread.
- This liquid crystal display element includes a pair of polarizing plates 1 arranged in parallel with each other, a transparent substrate 2 having insulating properties arranged inside the polarizing plates 1, and an inner side of these substrates 2, respectively. And a transparent electrode 3 (or a transparent electrode with an active element) provided therein, and an alignment film 4 disposed inside each of the transparent electrodes 3.
- Liquid crystal 5 is filled between the pair of alignment films 4, and the liquid crystal molecules are aligned in a certain direction by the action of the alignment film 4.
- the structure of the liquid crystal display device of the present invention is not limited to the illustrated structure. If necessary, other known elements may be added, or other elements may be replaced with some of the illustrated elements. May be. Example
- the liquid crystal phase upper limit temperature is the nematic phase isotropic liquid phase transition temperature (° C)
- T ⁇ N The liquid crystal phase lower limit temperature is the solid phase or smectic phase-nematic phase transition temperature (° C)
- ⁇ ⁇ ⁇ ⁇ I ⁇ n refractive index anisotropy measured at 25 ° C.
- Vth Threshold voltage measured at 25 ° C when a TN-LCD with a cell thickness of 6 ⁇ m is constructed (V)
- V Viscosity measured at 20 ° C (mPa's)
- Example 1 No. 1
- Example 2 No. 2
- Example 3 No. 3
- Example 4 No. 4
- Example 5 No. 5
- Example 6 No. 6
- Example 7 No. 7
- the nematic liquid crystal yarn compositions of Examples 1, 2, 3, 4, 5, 6, and 7 have a low liquid crystal phase minimum temperature (T ⁇ N ) and a high liquid crystal phase maximum temperature. It has a wide liquid crystal temperature range, small refractive index anisotropy ( ⁇ n), low Vth, and low viscosity. Using this nematic liquid crystal composition, a TFT liquid crystal display device having excellent display quality could be manufactured. Comparative Examples 1, 2, 3, 4, 5 and 6
- the nematic liquid crystal composition of No. 1 has a small refractive index anisotropy ( ⁇ ) and a high T N — j of + 90 ° C. as in the example.
- T- N was as high as + 23 ° C, so the temperature range of the liquid crystal phase was narrow at 67 ° C.
- Vth is as high as 2.08V, it is clear that it is inferior to the example.
- the nematic liquid crystal composition of Comparative Example 2 containing the compound of Example 2 is also a composition having a small refractive index anisotropy ( ⁇ ) and a low viscosity of 15.3 raPa-s as in the example.
- the liquid crystal phase temperature range is 85 because T ⁇ N is as high as _ 4 ° C. It is narrow, ⁇ , and is as high as 1.82 V, indicating that it is inferior to the example.
- the nematic liquid crystal composition of Comparative Example 3 which is a liquid crystal composition disclosed in Patent Document 3 and containing a compound having a trifluoromethyloxyhexyl group, has a small refractive index anisotropy (mm n) as in the example. Since the temperature is as high as 0 ° C, the temperature range of the liquid crystal phase is narrow at 66 ° C. At 20 ° C, crystals are precipitated and the viscosity cannot be measured. Also, since Vth is as high as 1.9 IV, it is clear that it is inferior to the example.
- the nematic liquid crystal composition of Comparative Example 4 disclosed in Patent Document 1 containing a compound having a hexyl group having a trifluoromethyoxyl mouth and a compound having a condensed ring has a refractive index anisotropy ( ⁇ ) similar to that of Example. Is small and Vth is as low as 1.40V. However, since N was as high as 0 ° C., the liquid crystal phase temperature range was as narrow as 74 ° C., and the viscosity was as high as 37.2 mPa-s, indicating that it was clearly inferior to the examples.
- the nematic liquid crystal composition of Comparative Example 5 has a small refractive index anisotropy ( ⁇ ), a high force of S + 90 ° C, a low T ⁇ N of ⁇ 23 ° C, and a liquid crystal phase temperature range as in the example. Is as broad as 113 ° C. However, since Vth was as high as 2.27V, it was found that it was inferior to the example.
- the nematic liquid crystal composition of Comparative Example 6 has a small refractive index anisotropy ( ⁇ n), a high force of S + 86 ° C, a low T ⁇ N of ⁇ 46 ° C, and a liquid crystal phase temperature, as in the example.
- the range is as wide as 132 ° C and Vth is as low as 1.53 V.
- the viscosity was extremely high at 55.2 mPa's, it was found that the viscosity was inferior to that of the examples.
- the nematic liquid crystal composition of the present invention has a wide liquid crystal phase temperature range, a low threshold voltage, a low viscosity, and a small refractive index anisotropy. Therefore, by using this liquid crystal composition as a component of an active matrix liquid crystal display element, particularly a reflective or transflective liquid crystal display element, a display element having excellent display quality can be provided.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020057017219A KR101109529B1 (ko) | 2003-03-20 | 2004-03-17 | 액정 조성물 |
EP04721335A EP1607463B1 (en) | 2003-03-20 | 2004-03-17 | Liquid crystal composition |
US10/549,143 US7405026B2 (en) | 2003-03-20 | 2004-03-17 | Liquid crystal composition |
DE602004016734T DE602004016734D1 (de) | 2003-03-20 | 2004-03-17 | Flüssigkristalline zusammensetzung |
Applications Claiming Priority (2)
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JP2003077845 | 2003-03-20 | ||
JP2003-077845 | 2003-03-20 |
Publications (1)
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WO2004083340A1 true WO2004083340A1 (ja) | 2004-09-30 |
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Family Applications (1)
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PCT/JP2004/003574 WO2004083340A1 (ja) | 2003-03-20 | 2004-03-17 | 液晶組成物 |
Country Status (7)
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US (1) | US7405026B2 (ja) |
EP (1) | EP1607463B1 (ja) |
KR (1) | KR101109529B1 (ja) |
CN (1) | CN100390250C (ja) |
DE (1) | DE602004016734D1 (ja) |
TW (1) | TWI362411B (ja) |
WO (1) | WO2004083340A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102046586B (zh) * | 2008-06-06 | 2013-12-04 | 旭硝子株式会社 | 液晶性化合物、聚合性液晶性组合物、光学各向异性材料、光学元件及光信息记录再生装置 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5143475B2 (ja) * | 2007-05-17 | 2013-02-13 | Dic株式会社 | ネマチック液晶組成物及びバイステイブルネマチック液晶表示素子 |
DE102012020940B4 (de) * | 2012-10-25 | 2014-12-11 | Merck Patent Gmbh | Flüssigkristallines Medium und seine Verwendung in einer elektrooptischen Flüssigkristallanzeige |
TWI502056B (zh) * | 2013-03-07 | 2015-10-01 | Dainippon Ink & Chemicals | Liquid crystal display device |
CN104073260A (zh) * | 2014-05-28 | 2014-10-01 | 北京大学 | 萘系列高双折射率液晶化合物及其制备方法 |
KR20160082065A (ko) * | 2014-12-30 | 2016-07-08 | 주식회사 동진쎄미켐 | 액정 화합물 및 이를 포함하는 액정 조성물 |
CN108239550B (zh) * | 2016-12-23 | 2022-03-11 | 江苏和成显示科技有限公司 | 液晶组合物及其应用 |
KR20230144409A (ko) | 2022-04-07 | 2023-10-16 | 엘지전자 주식회사 | 식기세척기 |
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JPH10218825A (ja) * | 1997-02-07 | 1998-08-18 | Dainippon Ink & Chem Inc | トリフルオロメトキシ基を含有する化合物とそれを含有する液晶組成物及びその製造方法 |
JPH11286465A (ja) * | 1998-02-05 | 1999-10-19 | Dainippon Ink & Chem Inc | (トリフルオロメトキシ)アルキル基を含有する化合物とそれを含有する液晶組成物及びその製造方法 |
JP2002220356A (ja) * | 2001-01-26 | 2002-08-09 | Dainippon Ink & Chem Inc | メチレンシクロヘキサン誘導体 |
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US5536442A (en) * | 1987-09-25 | 1996-07-16 | Merck Patent Gesellschaft Mit Beschrankter Haftung | Fluorinated liquid crystal compounds and liquid crystal medium containing same |
DE4023107A1 (de) | 1990-07-20 | 1992-01-23 | Merck Patent Gmbh | Cyclohexanderivate |
JP2732335B2 (ja) * | 1992-05-28 | 1998-03-30 | チッソ株式会社 | 液晶組成物およびこの組成物を用いた液晶表示素子 |
CA2269561C (en) * | 1998-04-22 | 2007-06-05 | Dainippon Ink And Chemicals, Inc. | Naphthalene derivative and liquid crystal composition comprising the same |
DE19859421A1 (de) | 1998-12-22 | 2000-06-29 | Merck Patent Gmbh | Flüssigkristallines Medium |
JP4701466B2 (ja) * | 1999-07-15 | 2011-06-15 | Dic株式会社 | ネマチック液晶組成物及びこれを用いた液晶表示装置 |
JP3856188B2 (ja) * | 1999-10-28 | 2006-12-13 | 大日本インキ化学工業株式会社 | 液晶組成物 |
DE10122371B4 (de) | 2000-05-25 | 2010-12-30 | Merck Patent Gmbh | Flüssigkristallines Medium und seine Verwendung in einer elektrooptischen Flüssigkristallanzeige |
JP4792623B2 (ja) | 2000-08-07 | 2011-10-12 | Dic株式会社 | 液晶組成物 |
-
2004
- 2004-03-17 CN CNB200480007256XA patent/CN100390250C/zh not_active Expired - Fee Related
- 2004-03-17 US US10/549,143 patent/US7405026B2/en not_active Expired - Fee Related
- 2004-03-17 KR KR1020057017219A patent/KR101109529B1/ko not_active IP Right Cessation
- 2004-03-17 EP EP04721335A patent/EP1607463B1/en not_active Expired - Fee Related
- 2004-03-17 DE DE602004016734T patent/DE602004016734D1/de not_active Expired - Lifetime
- 2004-03-17 WO PCT/JP2004/003574 patent/WO2004083340A1/ja active IP Right Grant
- 2004-03-18 TW TW093107205A patent/TWI362411B/zh not_active IP Right Cessation
Patent Citations (3)
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JPH10218825A (ja) * | 1997-02-07 | 1998-08-18 | Dainippon Ink & Chem Inc | トリフルオロメトキシ基を含有する化合物とそれを含有する液晶組成物及びその製造方法 |
JPH11286465A (ja) * | 1998-02-05 | 1999-10-19 | Dainippon Ink & Chem Inc | (トリフルオロメトキシ)アルキル基を含有する化合物とそれを含有する液晶組成物及びその製造方法 |
JP2002220356A (ja) * | 2001-01-26 | 2002-08-09 | Dainippon Ink & Chem Inc | メチレンシクロヘキサン誘導体 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102046586B (zh) * | 2008-06-06 | 2013-12-04 | 旭硝子株式会社 | 液晶性化合物、聚合性液晶性组合物、光学各向异性材料、光学元件及光信息记录再生装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1607463A4 (en) | 2006-05-17 |
TWI362411B (en) | 2012-04-21 |
EP1607463B1 (en) | 2008-09-24 |
KR20050118187A (ko) | 2005-12-15 |
TW200508369A (en) | 2005-03-01 |
KR101109529B1 (ko) | 2012-03-13 |
CN100390250C (zh) | 2008-05-28 |
DE602004016734D1 (de) | 2008-11-06 |
EP1607463A1 (en) | 2005-12-21 |
US20060172089A1 (en) | 2006-08-03 |
CN1761732A (zh) | 2006-04-19 |
US7405026B2 (en) | 2008-07-29 |
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