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45results about How to "Large negative dielectric anisotropy" patented technology
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Liquid crystal compound having vinyloxy, liquid crystal composition and liquid crystal display device
ActiveUS20140138582A1Increase heatSmall viscosityLiquid crystal compositionsOrganic chemistryCrystallographyDielectric anisotropy
A liquid crystal compound having high stability to heat, light and so forth, a high clearing point, a low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, a suitable elastic constant and excellent compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. The compound is represented by formula (1-1):wherein, for example, R1 is alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons or alkenyl having 2 to 10 carbons; R2 is alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons or alkenyl having 3 to 10 carbons; ring A1 is 1,4-cyclohexylene or 1,4-phenylene; ring A2 is 1,4-cyclohexylene, 1,4-phenylene or 2,3-difluoro-1,4-phenylene; Z1 and Z2 are single bonds; L1 and L2 are fluorine; and 1 is 0, 1 or 2.
Owner:JNC CORP +1
Compound having bicyclo[3.3.0]octane-2,6-diyl, liquid crystal composition and liquid crystal display device
ActiveUS20120286200A1Increase heatSmall viscosityLiquid crystal compositionsOrganic chemistryCrystallographyDielectric anisotropy
A liquid crystal compound having a high stability to heat, light or the like, a high clearing point, a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a suitable elastic constant and an excellent compatibility with other liquid crystal compounds, and a liquid crystal composition including this compound, and a liquid crystal display device containing this composition. A compound represented by formula (1-1).In the formula, for example, R1 and R2 are alkyl having 1 to 10 carbons or alkoxy having 1 to 9 carbons; ring A1 and ring A2 are 1,4-cyclohexylene, 1,4-phenylene or 2,3-difluoro-1,4-phenylene; Z1 and Z2 are a single bond or —(CH2)2—; >W1—W2— and >W4—W3— are >CH—CH2— or >C═CH—; and m and n are 0, 1 or 2, and the sum of m and n is 1 or 2.
![Compound having bicyclo[3.3.0]octane-2,6-diyl, liquid crystal composition and liquid crystal display device](https://images-eureka.patsnap.com/patent_img/5a2f0142-14d2-4ebd-8bb8-a6fb3cfd281a/US20120286200A1-20121115-C00001.png "Compound having bicyclo[3.3.0]octane-2,6-diyl, liquid crystal composition and liquid crystal display device")
![Compound having bicyclo[3.3.0]octane-2,6-diyl, liquid crystal composition and liquid crystal display device](https://images-eureka.patsnap.com/patent_img/5a2f0142-14d2-4ebd-8bb8-a6fb3cfd281a/US20120286200A1-20121115-C00002.png "Compound having bicyclo[3.3.0]octane-2,6-diyl, liquid crystal composition and liquid crystal display device")
![Compound having bicyclo[3.3.0]octane-2,6-diyl, liquid crystal composition and liquid crystal display device](https://images-eureka.patsnap.com/patent_img/5a2f0142-14d2-4ebd-8bb8-a6fb3cfd281a/US20120286200A1-20121115-C00003.png "Compound having bicyclo[3.3.0]octane-2,6-diyl, liquid crystal composition and liquid crystal display device")
Owner:JNC CORP +1
Alkyl dicyclohexyl 2,3-difluorophenylbutenoid liquid crystal compound and application thereof
ActiveCN102153442ALarge negative dielectric anisotropyGood compatibilityLiquid crystal compositionsHalogenated hydrocarbon preparationCrystallographyLiquid-crystal display
The invention relates to an alkyl dicyclohexyl 2,3-difluorophenylbutenoid liquid crystal compound and an application thereof. The compound is as shown in a general formula (I), wherein R represents C1-C2 alkyl and alkenyl, or C1-C12 alkyl or alkenyl containing fluorine and chlorine, or alkyl or alkenyl in which any CH2 is substituted by O. The invention provides a novel liquid crystal compound which has the characteristics of small viscosity, high charge retention rate, wide liquid crystal phase temperature interval, stable chemical property, negative electronegativity and the like, and can be used in liquid crystal display modes such as VA, IPS, ECB and the like. The liquid crystal compound is applied in a mixed liquid crystal and is characterized in that the liquid crystal compound as shown in the general formula (I) is contained in the mixed liquid crystal. The liquid crystal compound can be applied in a liquid crystal display and is characterized in that the liquid crystal display as shown in the general formula (I) is contained in the liquid crystal display.
Owner:BEIJING CHENGZHI YONGHUA DISPLAY TECHNOLOGY CO LTD
Liquid crystal composition and liquid crystal display device
InactiveUS20090103042A1Wide temperature rangeSmall viscosityLiquid crystal compositionsThin material handlingCrystallographyHydrogen
A liquid crystal composition is provided that has a wide temperature range of a nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy and a large specific resistance, and a liquid crystal composition is provided that satisfies these characteristics and also has a low minimum temperature of a nematic phase, preferably −20° C. or less. A liquid crystal display device containing the liquid crystal composition is also provided. The liquid crystal composition has a negative dielectric anisotropy and contains a liquid crystal compound having an ethylene bond and 2,3-difluorophenylene as a first component and a liquid crystal compound having phenylene having halogens replacing two hydrogens as the second component, and the liquid crystal display device contains the liquid crystal composition.
Owner:JNC CORP +1
Liquid crystal medium and application thereof
InactiveCN108728114ALarge negative dielectric anisotropyHigh negative dielectric anisotropyLiquid crystal compositionsElectricityDielectric anisotropy
The invention relates to the field of liquid crystal display, in particular to a liquid crystal medium and application thereof. The liquid crystal medium comprises at least one compound represented bya general formula I and at least one compound represented by a general formula II, wherein the compound represented by the general formula I is a tricyclic compound containing a 2,3-difluorobenzene structure which has higher negative dielectric anisotropy and a high bright spot; the compound represented by the general formula II is a dicyclic compound containing a 2,3-difluorobenzene structure which is a negative dielectric anisotropic liquid crystal compound which adopts a fluoroethoxy structure at the tail end, thereby greatly improving the dielectric anisotropy of the liquid crystal compound. The liquid crystal medium provided by the invention has low rotating viscosity, high low-temperature mutual solubility and fast response time, is suitable for VA type liquid crystal display devices such as VA / MVA / PVA / PSVA as well as IPS and FFS mode liquid crystal display devices, and is very useful for improving the response time of liquid crystal display. The general formula I and the general formula II are shown in the description.
Owner:BEIJING BAYI SPACE LCD MATERIALS TECH
Compound having hydrocoumarin skeleton, liquid crystal composition, and liquid crystal display device
InactiveUS20090267026A1High clearing pointSuitable optical anisotropyLiquid crystal compositionsOrganic chemistryCrystallographyDielectric anisotropy
A liquid crystal compound is to be obtained that has stability to heat, light and so forth, a high clearing point, a suitable optical anisotropy, a large negative dielectric anisotropy, and excellent compatibility with other liquid crystal compounds. A liquid crystal composition containing the compound is also to be obtained that has a low viscosity, a suitable optical anisotropy, a suitable negative dielectric anisotropy, a low threshold voltage, a high maximum temperature of a nematic phase (phase transition temperature from a nematic phase to an isotropic phase), and a low minimum temperature of a nematic phase. A compound having a hydrocoumarin skeleton is synthesized, and a liquid crystal composition containing the compound is produced.
Owner:JNC CORP +1
Liquid crystal composition and liquid crystal display device
InactiveUS7794801B2Wide temperature rangeSmall viscosityLiquid crystal compositionsThin material handlingCrystallographyHydrogen
A liquid crystal composition is provided that has a wide temperature range of a nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy and a large specific resistance, and a liquid crystal composition is provided that satisfies these characteristics and also has a low minimum temperature of a nematic phase, preferably −20° C. or less. A liquid crystal display device containing the liquid crystal composition is also provided. The liquid crystal composition has a negative dielectric anisotropy and contains a liquid crystal compound having an ethylene bond and 2,3-difluorophenylene as a first component and a liquid crystal compound having phenylene having halogens replacing two hydrogens as the second component, and the liquid crystal display device contains the liquid crystal composition.
Owner:JNC CORP +1
Negative dielectric anisotropic liquid crystal composition and applications thereof
ActiveCN109423301ALarge negative dielectric anisotropyHD highlightsLiquid crystal compositionsCrystallographySolubility
The invention relates to a negative dielectric anisotropic liquid crystal composition and applications thereof. The liquid crystal composition comprises at least one or more compounds represented by the formula I and one or more compounds represented by the formula II. The provided liquid crystal composition has the advantages of low rotary viscosity, large elastic constant, good low temperature inter-solubility, and quick response speed, can be applied to multiple display modes of quick response liquid crystal display, and can obviously improves the display effect of a liquid crystal displayof a VA / MV / PVA / PSVA, IPS or FFS mode.
Owner:BEIJING BAYI SPACE LCD MATERIALS TECH
Liquid crystal compound having butene-bonding group, liquid crystal composition and liquid crystal display device
ActiveUS20160040067A1Increase heatSmall viscosityLiquid crystal compositionsOrganic chemistryButeneDielectric anisotropy
To provide a liquid crystal compound satisfying at least one of high stability to heat, light and so forth, a high clearing point, low minimum temperature of a liquid-crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, a suitable elastic constant and excellent compatibility with other liquid-crystal compounds, a liquid crystal composition containing the compound and a liquid crystal display device including the composition.A compound is represented by formula (1-1).For example, R1 and R2 are independently hydrogen, alkyl having 1 to 10 carbons, alkenyl having 3 to 10 carbons and alkoxy having 1 to 9 carbons; ring A1 is 1,4-cyclohexylene; ring A2 and ring A3 are independently 1,4-cyclohexylene or 1,4-phenylene; Z1 is a single bond or —(CH2)2; l is 0 or 1, m and n are 0, 1 or 2, a sum: l+m+n is 0, 1 or 2; x is 0 or 1.
Owner:JNC CORP +1
Liquid crystal compound having fluorine-containing alkenyl terminal group, liquid crystal composition and liquid crystal display device
ActiveUS20150232759A1Increase heatSmall viscosityLiquid crystal compositionsOrganic chemistryCrystallographyDielectric anisotropy
To provide a liquid crystal compound satisfying at least one of high stability to heat, light and so forth, a high clearing point, a low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, a suitable elastic constant and excellent compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition.The compound is represented by formula (1):wherein, for example, R is alkyl having 1 to 10 carbons or alkoxy having 1 to 9 carbons; ring A1, ring A2 and ring A3 is 1,4-cyclohexylene, 1,4-phenylene or 2,3-difluoro-1,4-phenylene; at least one of L1 and L2 is fluorine and the remainder is hydrogen; Z1, Z2 and Z3 are a single bond, —(CH2)2—, —CH2O— or —COO—; x and y are an integer from 0 to 10; and l, m and n are 0 or 1.
Owner:JNC CORP +1
Liquid crystal compound having vinyloxy, liquid crystal composition and liquid crystal display device
ActiveUS9193907B2Increase heatSmall viscosityLiquid crystal compositionsCrystallographyDielectric anisotropy
A liquid crystal compound having high stability to heat, light and so forth, a high clearing point, a low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, a suitable elastic constant and excellent compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. The compound is represented by formula (1-1):wherein, for example, R1 is alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons or alkenyl having 2 to 10 carbons; R2 is alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons or alkenyl having 3 to 10 carbons; ring A1 is 1,4-cyclohexylene or 1,4-phenylene; ring A2 is 1,4-cyclohexylene, 1,4-phenylene or 2,3-difluoro-1,4-phenylene; Z1 and Z2 are single bonds; L1 and L2 are fluorine; and 1 is 0, 1 or 2.
Owner:JNC CORP +1
Liquid crystal compound having tetrafluoro cyclohexadiene structure showing negative anisotropy, liquid crystal composition, and liquid crystal display device
InactiveUS20160200980A1Increase heatSmall viscosityLiquid crystal compositionsOrganic chemistryCrystallographyLiquid-crystal display
A liquid crystal compound is represented by the formula (1). For example, in the formula (1): R1 and R2 each represent an alkyl having 1 to 10 carbon atoms, an alkenyl having 2 to 10 carbon atoms, or an alkoxy having 1 to 9 carbon atoms; a ring A1 and a ring A2 each represent 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z2 each represent a single bond, —(CH2)2—, —CH═CH—, —COO—, —OCO—, —CF2O—, —OCF2—, —CH2O—, or —OCH2—; and a and b each represent 0, 1, 2, or 3 and the sum of a and b is 4 or less.
Owner:JNC CORP +1
Carbonyl derivative, liquid crystal composition containing compound thereof and liquid crystal display device
ActiveUS20150218452A1Increase heatSmall viscosityLiquid crystal compositionsOrganic chemistryCarbon numberPhenyl group
To provide a liquid crystal compound satisfying at least one of physical properties such as a high stability to heat, light and so forth, a high clearing point, a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a suitable elastic constant and an excellent compatibility with other liquid crystal compounds; a liquid crystal composition containing the compound; and a liquid crystal display device including the composition. The compound is represented by formula (1):wherein, for example, Ra and Rb are alkyl having 1 to 10 carbons, alkenyl having 2 to 10 carbons or alkoxy having 1 to 9 carbons; A1, A2 and A3 are 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z2 are single bonds, —(CH2)2—, —CH═CH—, —COO—, —OCO—, —CF2O—, —OCF2—, —CH2O— or —OCH2—; Y1 is —CF2H or —CF3; Y2 is fluorine; and a, b and d are 0, 1, 2 or 3, and c is 1 or 3.
Owner:JNC CORP +1
Nematic liquid crystal composition containing fluoroethoxy structure and application of nematic liquid crystal composition
InactiveCN108728113AShort response timeReduce thicknessLiquid crystal compositionsCrystallographyDielectric anisotropy
The invention relates to the field of liquid crystal display, and particularly relates to a nematic liquid crystal composition containing a fluoroethoxy structure. The nematic liquid crystal composition contains at least one compound represented by a general formula I and at least one compound represented by a general formula II, wherein the compound represented by the formula I is a liquid crystal compound which is of a 2, 3-difluorobenzene structure, the compound has relatively great negative dielectric anisotropy and a high clearing point; and the compound represented by the formula II is abicyclic liquid crystal compound having 2, 3-difluoro-1, 4-phenyl, and a terminus is of a fluoroethoxy structure for greatly improving dielectric anisotropy of the liquid crystal compound. The liquidcrystal composition provided by the invention has low rotational viscosity, excellent low-temperature intersolubility and fast response, is suitable for VA-type liquid crystal display devices such asVA / MVA / PVA / PSVA as well as IPS and FFS mode liquid crystal display devices, and is very effective for improving the response time of liquid crystal displays.
Owner:BEIJING BAYI SPACE LCD MATERIALS TECH
Liquid crystal composition and application thereof
InactiveCN104593001AHD highlightsLarge negative dielectric anisotropyLiquid crystal compositionsNon-linear opticsCrystallographyDielectric anisotropy
The invention relates to a liquid crystal composition with negative dielectric anisotropy. The liquid crystal composition comprises a dielectric negative component, a component A, a second dielectric neutral component and a component B. The liquid crystal composition provided by the invention has appropriate negative dielectric anisotropy, appropriate optical anisotropy, relatively low viscosity and a relatively wide nematic phase temperature range.
Owner:SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
Method for preparing 2,3 difluoro - 4 - Bromoethyl phenyl ether
This invention relates to a method for preparing a fluorine-containing organic intermediate, more specifically, 2, 3-difluoro-4-bromophenetole. The method comprises: bromating 2, 3-difluorophenol by Br2 in the presence of solvent and organic acid to obtain 2,3-difluoro-4-bromophenol with content higher than 95%, recrystallizing to obtain 2,3-difluoro-4-bromophenol with a content higher than 99%, and etherifying with bromoethane or diethyl sulfate to obtain 2,3-difluoro-4-bromophenetole. The method has such advantages as abundant raw materials, reasonable process, easy operation, low cost, and high yield. The prepared 2,3-difluoro-4-bromophenetole can be used in the formula of liquid crystal material with high negative dielectric anisotropy, appropriate double refraction, wide nematic range, and low viscoelasticity.
Owner:YETAI FINE CHEM INST CHANGZHOU CITY
Compound having hydrocoumarin skeleton, liquid crystal composition, and liquid crystal display device
InactiveUS7951305B2High clearing pointSuitable optical anisotropyLiquid crystal compositionsOrganic chemistryCrystallographyDielectric anisotropy
A liquid crystal compound is to be obtained that has stability to heat, light and so forth, a high clearing point, a suitable optical anisotropy, a large negative dielectric anisotropy, and excellent compatibility with other liquid crystal compounds. A liquid crystal composition containing the compound is also to be obtained that has a low viscosity, a suitable optical anisotropy, a suitable negative dielectric anisotropy, a low threshold voltage, a high maximum temperature of a nematic phase (phase transition temperature from a nematic phase to an isotropic phase), and a low minimum temperature of a nematic phase. A compound having a hydrocoumarin skeleton is synthesized, and a liquid crystal composition containing the compound is produced.
Owner:JNC CORP +1
Liquid crystal medium and application thereof
InactiveCN108728118ALarge negative dielectric anisotropySignificantly improved negative dielectric anisotropyLiquid crystal compositionsDielectric anisotropyRotational viscosity
The invention relates to the field of liquid crystal displays, in particular to a liquid crystal medium and application thereof. The liquid crystal medium comprises at least one compound shown as a general formula I and at least one compound shown as a general formula II, wherein the compound shown as the general formula I is a tricyclic compound containing a 2,3-difluorobenzene structure, and thestructure has a relatively large negative dielectric anisotropy and a high clearing point; the compound shown as the general formula II, provided by the invention, is a bicyclic compound containing a2,3-difluorobenzene structure, and the structure is a negative dielectric anisotropic liquid crystal compound which adopts a fluoroethoxy structure at a terminal so as to greatly enhance the dielectric anisotropy of the liquid crystal compound. The liquid crystal medium provided by the invention has low rotational viscosity, good low-temperature intersolubility and a short response time, is suitable for VA liquid crystal display devices such as VA / MVA / PVA / PSVA and IPS-mode and FFS-mode liquid crystal display devices, and is very effective for shortening the response time of liquid crystal displays.
Owner:BEIJING BAYI SPACE LCD MATERIALS TECH
Liquid crystal medium and application thereof
InactiveCN108728120ALarge negative dielectric anisotropyHigh negative dielectric anisotropyLiquid crystal compositionsDielectric anisotropyMutual solubility
The invention relates to the field of liquid crystal display, in particular to a liquid crystal medium and application thereof. The liquid crystal medium at least contains a compound represented by ageneral formula I and at least one compound represented by at least one general formula II, wherein the compound represented by the general formula I is a three-ring compound with 2,3-difluorobenzenestructures; the structure has greater negative dielectric anisotropy and high clear points; the compound represented by the general formula II provided by the invention is a two ring compound with 2,3-difluorobenzene structures; the structure is the negative dielectric anisotropy liquid crystal compounds; the fluoro ethyoxyl structure is used as the tail end; the dielectric anisotropy of the liquid crystal compound is greatly improved. The liquid crystal medium provided by the invention has low rotary viscosity, good low-temperature mutual solubility and fast response time, is applicable to VAtype liquid crystal display devices such as VA / MVA / PVA / PSVA and IPS and FFS mode liquid crystal display devices; the medium is very effective on the improvement of the response time of the liquid crystal display. (The formulas are shown in the description.).
Owner:BEIJING BAYI SPACE LCD MATERIALS TECH
Liquid crystal compound having xanthene skeleton and exhibiting negative dielectric anisotropy, liquid crystal composition and liquid crystal display device
ActiveUS9879182B2Increase heatSmall viscosityLiquid crystal compositionsOrganic chemistryCrystallographyDielectric anisotropy
A liquid crystal compound satisfies at least one of physical properties such as a high stability to heat, light and so forth, a high clearing point, a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a suitable elastic constant and an excellent compatibility with other liquid crystal compounds.The compound is represented by formula (1).In the formula, for example, R1 and R2 are alkyl having 1 to 15 carbons; ring A1 and ring A2 are 1,4-cyclohexylene or 1,4-phenylene, Z1 and Z2 are a single bond, —(CH2)2—, —CH═CH—, —C≡C—, —COO—, —OCO—, —CH2O—, —OCH2—, —CF2O—, —OCF2— or —CF═CF—, a and b are 0, 1 or 2, and a sum of a and b is 1 or 2.
Owner:JNC CORP +1
A liquid crystal compound containing 2,3-difluoro-5-methylphenyl, composition and application thereof
ActiveCN106318401BLow rotational viscosityLarge negative dielectric anisotropyLiquid crystal compositionsOrganic compound preparationCrystallographyDielectric anisotropy
The invention relates to a liquid crystal compound containing 2,3-difluoro-5-methyl-phenyl. The compound has a structure shown as a general formula I in the specification. The invention also relates to a preparation method of the liquid crystal compound and a composition containing the liquid crystal compound. The invention relates to an application of the liquid crystal compound and the composition in the fields of liquid crystal display. The liquid crystal compound and the composition have negative dielectric anisotropy, have a stable structure, and have good application prospect.
Owner:BEIJING BAYI SPACE LCD MATERIALS TECH
Carbonyl derivative, liquid crystal composition containing compound thereof and liquid crystal display device
ActiveUS9783481B2Increase heatSmall viscosityLiquid crystal compositionsOrganic chemistryCarbon numberPhenyl group
To provide a liquid crystal compound satisfying at least one of physical properties such as a high stability to heat, light and so forth, a high clearing point, a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a suitable elastic constant and an excellent compatibility with other liquid crystal compounds; a liquid crystal composition containing the compound; and a liquid crystal display device including the composition. The compound is represented by formula (1):wherein, for example, Ra and Rb are alkyl having 1 to 10 carbons, alkenyl having 2 to 10 carbons or alkoxy having 1 to 9 carbons; A1, A2 and A3 are 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z2 are single bonds, —(CH2)2—, —CH═CH—, —COO—, —OCO—, —CF2O—, —OCF2—, —CH2O— or —OCH2—; Y1 is —CF2H or —CF3; Y2 is fluorine; and a, b and d are 0, 1, 2 or 3, and c is 1 or 3.
Owner:JNC CORP +1
Method for preparing 2,3-difluoro-4-bromophenyl ethyl ether
InactiveCN100569722CLarge negative dielectric anisotropyModerately birefringentEther preparationDielectric anisotropyBromine
The invention relates to the technical field of preparation of fluorine-containing organic intermediates, in particular to a preparation method of 2,3-difluoro-4-bromophenetole, which uses 2,3-difluorophenol as a raw material in a solvent and an organic In the presence of acid additives, bromine (Br2) was used to obtain 2,3-difluoro-4-bromophenol with a content of more than 95%, and after recrystallization, more than 99% of 2,3-difluoro-4-bromophenol was obtained. 4-bromophenol, and then use bromoethane or diethyl sulfate to etherify 2,3-difluoro-4-bromophenol to produce 2,3-difluoro-4-bromophenetole. The raw material of the present invention is easy to obtain, the process is scientific, the operation is simple, the cost is low, the yield is high, and it is easy to be industrialized. It has large negative dielectric anisotropy, moderate birefringence, very wide nematic range and low viscoelastic coefficient.
Owner:YETAI FINE CHEM INST CHANGZHOU CITY
Liquid crystal compound having fluorine-containing alkenyl terminal group, liquid crystal composition and liquid crystal display device
ActiveUS9404040B2Increase heatSmall viscosityLiquid crystal compositionsOrganic chemistryCrystallographyDielectric anisotropy
To provide a liquid crystal compound satisfying at least one of high stability to heat, light and so forth, a high clearing point, a low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, a suitable elastic constant and excellent compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition.The compound is represented by formula (1):wherein, for example, R is alkyl having 1 to 10 carbons or alkoxy having 1 to 9 carbons; ring A1, ring A2 and ring A3 is 1,4-cyclohexylene, 1,4-phenylene or 2,3-difluoro-1,4-phenylene; at least one of L1 and L2 is fluorine and the remainder is hydrogen; Z1, Z2 and Z3 are a single bond, —(CH2)2—, —CH2O— or —COO—; x and y are an integer from 0 to 10; and l, m and n are 0 or 1.
Owner:JNC CORP +1
High-transmittance liquid crystal composition with negative dielectric anisotropy and display device thereof
ActiveCN108239541AIncrease brightnessLarge negative dielectric anisotropyLiquid crystal compositionsCrystallographyDielectric anisotropy
The invention discloses a high-transmittance liquid crystal composition with negative dielectric anisotropy. The liquid crystal composition contains: one or more compounds as shown in general formulaI-1 and / or I-2, which account for 20-60% of the total weight of a negative liquid crystal composition; one or more compounds as shown in a general formula II, which account for 12-40% of the total weight of the negative liquid crystal composition; one or more compounds as shown in general formula III, which account for 12-40% of the total weight of the negative liquid crystal composition; and oneor more compounds as shown in general formula IV, which account for 20-60% of the total weight of the negative liquid crystal composition. The invention also discloses a liquid crystal display devicecomprising the liquid crystal composition. The formulae are as shown in the specification.
Owner:JIANGSU HECHENG DISPLAY TECHCO
Liquid crystal compound, liquid crystal composition and display apparatus
ActiveCN107815322AAppropriate optical anisotropyHD highlightsLiquid crystal compositionsDielectric anisotropyViscosity
The invention provides a liquid crystal compound and application thereof. The liquid crystal composition comprises at least one compound as shown in a formula I as described in the specification, wherein the compound accounts for 1-20% by weight of the liquid crystal composition, at least one compound selected from formulae II-1, II-2, II-3 and II-4 and a group of the combination thereof, whereinthe compound accounts for 25-80% by weight of the liquid crystal composition; and at least one compound selected from formulae III-1, III-2, III-3 and III-4 and a group of the combination thereof, wherein the compound accounts for 20-75% by weight of the liquid crystal composition. The liquid crystal composition provided by the invention has proper optical anisotropism, relatively high clearing points, relatively great negative dielectric anisotropy, low viscosity and high reliability, is suitable for a liquid crystal display and meets the demand of quick response of the liquid crystal display. The invention also provides a compound meeting the formula I-2 as shown in the specification.
Owner:JIANGSU HECHENG DISPLAY TECHCO
Liquid crystal compound, liquid crystal composition, liquid crystal display element or liquid crystal display
PendingCN112080284ALarge elastic constantQuick responseLiquid crystal compositionsNon-linear opticsLiquid-crystal displayLiquid crystal
The invention discloses a liquid crystal compound, the structural formula of the liquid crystal compound is shown as the following formula I, and the liquid crystal compound has good reliability, goodlow-temperature inter-solubility and high response speed. The invention also discloses a liquid crystal composition containing the liquid crystal compound and a liquid crystal display element or a liquid crystal display.
Owner:SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
Tetracyclic liquid crystal compound having diatomic bonding group and 2,3-difluorophenylene, liquid crystal composition and liquid crystal display device
InactiveUS20200239775A1Increase heatAvoid low lightLiquid crystal compositionsOrganic chemistryCrystallographyLiquid-crystal display
A means is a compound represented by formula (1) , a liquid crystal composition containing the compound, and a liquid crystal display device including the composition.In formula (1), R1 and R2 are independently alkyl having 1 to 15 carbons or the like; ring A1, ring A2 and ring A3 are independently 1,4-cyclohexylene, 1,4-phenylene or the like; and Z1, Z2 and Z3 are independently a single bond or the like.
Owner:JNC CORP +1
Liquid crystal compound, liquid crystal composition and display device
ActiveCN107815322BAppropriate optical anisotropyHD highlightsLiquid crystal compositionsCrystallographyDielectric anisotropy
The invention provides a liquid crystal composition and its application. The liquid crystal composition comprises: at least one compound of general formula I accounting for 1-20% of the total weight of the liquid crystal composition; accounting for 25% of the total weight of the liquid crystal composition -80% of at least one compound selected from the group of general formula II-1, II-2, II-3, II-4 and combinations thereof; and at least 20-75% of the total weight of the liquid crystal composition A compound selected from the group consisting of general formulas III-1, III-2, III-3, III-4 and combinations thereof. The liquid crystal composition of the present invention has suitable optical anisotropy, relatively high clearing point, relatively large negative dielectric anisotropy, low viscosity and high reliability, is suitable for liquid crystal displays, and satisfies the demand for fast response of liquid crystal displays . The present invention also provides a compound according to the general formula I-2.
Owner:JIANGSU HECHENG DISPLAY TECHCO
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