WO2016169497A1 - 液晶组合物及其液晶显示器件 - Google Patents
液晶组合物及其液晶显示器件 Download PDFInfo
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- WO2016169497A1 WO2016169497A1 PCT/CN2016/079938 CN2016079938W WO2016169497A1 WO 2016169497 A1 WO2016169497 A1 WO 2016169497A1 CN 2016079938 W CN2016079938 W CN 2016079938W WO 2016169497 A1 WO2016169497 A1 WO 2016169497A1
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- 0 CC(C1CCC(*)CC1)C1CCC(**)CC1 Chemical compound CC(C1CCC(*)CC1)C1CCC(**)CC1 0.000 description 2
- SEOVPVSJTXEQNN-UHFFFAOYSA-N CCC1Cc2cc(-c(cc3)ccc3-c3ccc(-c4cc(F)c(C(Oc(cc5F)cc(F)c5F)(F)F)c(F)c4)c(F)c3)ccc2C1 Chemical compound CCC1Cc2cc(-c(cc3)ccc3-c3ccc(-c4cc(F)c(C(Oc(cc5F)cc(F)c5F)(F)F)c(F)c4)c(F)c3)ccc2C1 SEOVPVSJTXEQNN-UHFFFAOYSA-N 0.000 description 1
- BUTABAGHRNZUHX-UHFFFAOYSA-N CCCc(cc1)ccc1-c1ccc(-c2cc(F)c(C(Oc(cc3F)cc(F)c3F)(F)F)c(F)c2)c(F)c1 Chemical compound CCCc(cc1)ccc1-c1ccc(-c2cc(F)c(C(Oc(cc3F)cc(F)c3F)(F)F)c(F)c2)c(F)c1 BUTABAGHRNZUHX-UHFFFAOYSA-N 0.000 description 1
- JYKJVNNPHBGDNS-UHFFFAOYSA-N CCc(cc1)ccc1-c(cc1)cc(F)c1-c1cc(F)c(C(Oc(cc2F)cc(F)c2F)(F)F)c(F)c1 Chemical compound CCc(cc1)ccc1-c(cc1)cc(F)c1-c1cc(F)c(C(Oc(cc2F)cc(F)c2F)(F)F)c(F)c1 JYKJVNNPHBGDNS-UHFFFAOYSA-N 0.000 description 1
- HBXFIXSFKULBOG-UHFFFAOYSA-N Cc1cc(F)c(C)c(F)c1 Chemical compound Cc1cc(F)c(C)c(F)c1 HBXFIXSFKULBOG-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
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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
- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/12—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
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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
- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/20—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers
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- C09K19/00—Liquid crystal materials
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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
- C09K19/3066—Cyclohexane rings in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers
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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
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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
- C09K19/34—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
- C09K19/3402—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having oxygen as hetero atom
- C09K19/3405—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having oxygen as hetero atom the heterocyclic ring being a five-membered ring
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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
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
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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
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
- C09K19/44—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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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
- C09K2019/0466—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 the linking chain being a -CF2O- chain
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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
- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/12—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
- C09K2019/121—Compounds containing phenylene-1,4-diyl (-Ph-)
- C09K2019/123—Ph-Ph-Ph
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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
- C09K19/3001—Cyclohexane rings
- C09K19/3003—Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
- C09K2019/3004—Cy-Cy
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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
- C09K19/3001—Cyclohexane rings
- C09K19/3003—Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
- C09K2019/301—Cy-Cy-Ph
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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
- C09K19/3001—Cyclohexane rings
- C09K19/3003—Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
- C09K2019/3016—Cy-Ph-Ph
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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
- C09K19/34—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
- C09K19/3402—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having oxygen as hetero atom
- C09K2019/3422—Non-steroidal liquid crystal compounds containing at least one heterocyclic ring having oxygen as hetero atom the heterocyclic ring being a six-membered ring
Definitions
- the present invention relates to a liquid crystal composition and a liquid crystal display device comprising the same, and more particularly to a liquid crystal display device having an active matrix (AM) and driving using a thin film transistor (TFT).
- AM active matrix
- TFT thin film transistor
- Liquid crystal display devices are used in many fields of information display, for direct view displays and for projection type displays.
- the general display mode is divided into PC (phase change), TN (twist nematic), STN (super twisted nematic), ECB (electrically controlled birefringence), OCB ( Optically compensated bend, IPS (in-plane switching), VA (vertical alignment).
- Devices operating in TN and STN modes use positive dielectric anisotropy liquid crystals
- devices operating in ECB and VA mode use negative dielectric anisotropy liquid crystals
- IPS mode uses positive dielectric anisotropy liquid crystals.
- Negative dielectric anisotropic liquid crystals are used.
- the driving method of the device it is further divided into a PM (passive matrix) type and an AM (active matrix) type.
- the AM is classified into a TFT (thin film transistor), a MIM (metal insulator metal), and the like.
- AM active matrix
- TFTs thin film transistors
- a liquid crystal material is used as a medium and a liquid crystal cell constitutes a capacitor, but in practical applications, the capacitor cannot hold the voltage until the next update screen.
- the TFT switch is turned on to charge the pixel electrode during the limited time during the on time. When the TFT is turned off, the TFT charges the capacitor until the next cycle. Addressed.
- the discharge speed of the pixel depends on the electrode capacity and the resistivity of the dielectric material between the electrodes, so that the liquid crystal material is required to have a high resistivity and a suitable dielectric constant.
- a liquid crystal display device containing a liquid crystal material having a large resistivity can increase the voltage holding ratio and increase the contrast. Therefore, the liquid crystal material needs to have a large specific resistance value at the initial stage, and has a large specific resistance value even after being used for a long time.
- a liquid crystal display device containing a liquid crystal material having an appropriate optical anisotropy can increase contrast.
- a liquid crystal display device containing a liquid crystal material having a small viscosity can shorten the response time.
- the response time of the liquid crystal display device is short, it can be applied to an animated display.
- the injection time can be shortened, and workability can be improved.
- the prior art discloses a liquid crystal composition having a high voltage holding ratio, low power consumption, and fast response, such as the patent document CN102858918A, but there are environmental problems in the prior art (such as the use of chlorine-containing compounds) and the inability to balance LCD TVs. High-resistivity, low-temperature storage stability, moderately high optical anisotropy, high dielectric anisotropy, fast response speed, low drive voltage, and low-viscosity performance balance problems cannot be satisfied at the same time. Various indicators.
- Liquid crystal materials are an important part of liquid crystal displays. At present, global liquid crystal displays have great market demand and are mostly used in electronic and electrical products, but their life cycle is short. Shorter life cycle naturally has problems such as waste pollution.
- environmental protection issues are increasingly valued by the society, if you can control from the source, that is, choose environmentally friendly green materials in the process of liquid crystal material modulation, you can Greatly reduce the environmental cost of disposing of a waste LCD display. Therefore, the preparation of liquid crystal materials which are suitable in all aspects and which are economical and environmentally friendly tend to require more creative labor.
- An object of the present invention is to provide a liquid crystal composition comprising a large resistivity, a high voltage holding ratio, a high clearing point, a suitable optical anisotropy, a suitable dielectric anisotropy, a small viscosity, and a low threshold voltage.
- the invention discards the chlorine-containing monomer to achieve the green technical effect, and utilizes the difluoroether monomer to compensate for the increase of the threshold voltage, the defect of clearing point and optical anisotropy, and the difluoroether
- the monomer has a faster response speed and a better voltage holding ratio than the ordinary medium polar monomer.
- Another object of the present invention is to provide a liquid crystal display device which has characteristics such as high resistivity, high voltage holding ratio, high clearing point, suitable optical anisotropy, suitable dielectric anisotropy, low viscosity, and low threshold voltage.
- a composition of at least one characteristic, and the AM device has characteristics of high voltage holding ratio, short response time, high contrast, low energy consumption, and environmental protection.
- An object of the present invention is to provide at least one of characteristics having a large resistivity, a high voltage holding ratio, a high clearing point, an appropriate optical anisotropy, a suitable dielectric anisotropy, a small viscosity, and a low threshold voltage. And a green liquid crystal composition.
- the liquid crystal composition of the present application has green environmental properties while having At least one of the above characteristics.
- Another object of the present invention is to provide a liquid crystal display device comprising a large resistivity, a high voltage holding ratio, a high clearing point, a suitable optical anisotropy, a suitable dielectric anisotropy, a small viscosity, and a low threshold voltage. At least one of the characteristics, and the environmentally friendly liquid crystal composition, enables the liquid crystal display device to have a higher voltage holding ratio, a higher contrast ratio, a lower threshold voltage, a faster response speed, and superior power saving performance.
- the present invention provides a liquid crystal composition comprising:
- One or more compounds of the formula I in an amount of from 1 to 30% by weight based on the total weight of the liquid crystal composition
- One or more compounds of the formula II in an amount of from 1 to 30% by weight based on the total weight of the liquid crystal composition
- One or more compounds of the formula III in an amount of from 1 to 20% by weight based on the total weight of the liquid crystal composition
- One or more compounds of the general formula IV in an amount of from 30 to 80% by weight based on the total weight of the liquid crystal composition
- R, R 4 , R 5 , R 6 and R 7 are the same or different and each independently represents an alkyl group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms or a carbon number of 2 Alkenyl group of 7;
- R 3 represents H, an alkyl group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms or an alkenyl group having 2 to 7 carbon atoms;
- Y represents -CF 3 or -OCF 3 ;
- L 1 and L 2 are the same or different and each independently represents -H or -F;
- n 1, 2 or 3;
- n 1 or 2;
- the ring When m is 2 or 3, the ring The number is plural, the ring May be the same or different, each independently
- n 2
- the ring The number is plural, the ring May be the same or different, each independently
- the compound of formula I is selected from the group consisting of the following compounds
- R 1 and R 2 are the same or different and each independently represents an alkyl group having 1 to 7 carbon atoms and an alkoxy group having 1 to 7 carbon atoms.
- the compound of the formula IA is from 1 to 30% by weight based on the total weight of the liquid crystal composition.
- the compound of the formula IA is from 1 to 15% by weight based on the total weight of the liquid crystal composition.
- the compound of the formula IA is from 5 to 9% by weight based on the total weight of the liquid crystal composition.
- the compound of the formula IB is from 1 to 30% by weight based on the total weight of the liquid crystal composition.
- the compound of the formula IB is from 1 to 15% by weight based on the total weight of the liquid crystal composition.
- the compound of the formula IB is from 5 to 9% by weight based on the total weight of the liquid crystal composition.
- the liquid crystal composition comprises:
- One or more compounds of the formula II in an amount of from 1 to 30% by weight based on the total weight of the liquid crystal composition
- One or more compounds of the formula III in an amount of from 1 to 20% by weight based on the total weight of the liquid crystal composition
- One or more compounds of the formula IV in an amount of from 30 to 80% by weight based on the total weight of the liquid crystal composition
- R 1 represents an alkyl group having 1 to 7 carbon atoms and an alkoxy group having 1 to 7 carbon atoms
- R 3 represents H, an alkyl group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms or an alkenyl group having 2 to 7 carbon atoms;
- R 4 , R 5 , R 6 and R 7 are the same or different and each independently represents an alkyl group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms or a carbon number of 2 to 7.
- L 1 and L 2 are the same or different and each independently represents -H or -F;
- n 1, 2 or 3;
- n 1 or 2;
- the ring When m is 2 or 3, the ring The number is plural, the ring May be the same or different, each independently
- n 2
- the ring The number is plural, the ring May be the same or different, each independently
- the liquid crystal composition comprises:
- One or more compounds of the formula II in an amount of from 1 to 30% by weight based on the total weight of the liquid crystal composition
- One or more compounds of the formula III in an amount of from 1 to 20% by weight based on the total weight of the liquid crystal composition
- One or more compounds of the formula IV in an amount of from 30 to 80% by weight based on the total weight of the liquid crystal composition
- R 2 represents an alkyl group having 1 to 7 carbon atoms and an alkoxy group having 1 to 7 carbon atoms
- R 3 represents H, an alkyl group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms or an alkenyl group having 2 to 7 carbon atoms;
- R 4 , R 5 , R 6 and R 7 are the same or different and each independently represents an alkyl group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms or a carbon number of 2 to 7.
- L 1 and L 2 are the same or different and each independently represents -H or -F;
- n 1, 2 or 3;
- n 1 or 2;
- the ring When m is 2 or 3, the ring The number is plural, the ring May be the same or different, each independently
- n 2
- the ring The number is plural, the ring May be the same or different, each independently
- the liquid crystal composition comprises:
- One or more compounds of the formula II in an amount of from 1 to 30% by weight based on the total weight of the liquid crystal composition
- One or more compounds of the formula III in an amount of from 1 to 20% by weight based on the total weight of the liquid crystal composition
- One or more compounds of the formula IV in an amount of from 30 to 80% by weight based on the total weight of the liquid crystal composition
- R 1 and R 2 are the same or different and each independently represents an alkyl group having 1 to 7 carbon atoms and an alkoxy group having 1 to 7 carbon atoms;
- R 3 represents H, an alkyl group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms or an alkenyl group having 2 to 7 carbon atoms;
- R 4 , R 5 , R 6 and R 7 are the same or different and each independently represents an alkyl group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms or a carbon number of 2 to 7.
- L 1 and L 2 are the same or different and each independently represents -H or -F;
- n 1, 2 or 3;
- n 1 or 2;
- the ring When m is 2 or 3, the ring The number is plural, the ring May be the same or different, each independently
- n 2
- the ring The number is plural, the ring May be the same or different, each independently
- the liquid crystal composition comprises only:
- One or more compounds of the formula II in an amount of from 1 to 30% by weight based on the total weight of the liquid crystal composition
- One or more compounds of the formula III in an amount of from 1 to 20% by weight based on the total weight of the liquid crystal composition
- One or more compounds of the formula IV in an amount of from 30 to 80% by weight based on the total weight of the liquid crystal composition
- R 1 and R 2 are the same or different and each independently represents an alkyl group having 1 to 7 carbon atoms and an alkoxy group having 1 to 7 carbon atoms;
- R 3 represents H, an alkyl group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms or an alkenyl group having 2 to 7 carbon atoms;
- R 4 , R 5 , R 6 and R 7 are the same or different and each independently represents an alkyl group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms or a carbon number of 2 to 7.
- L 1 and L 2 are the same or different and each independently represents -H or -F;
- n 1, 2 or 3;
- n 1 or 2;
- the ring When m is 2 or 3, the ring The number is plural, the ring May be the same or different, each independently
- n 2
- the ring The number is plural, the ring May be the same or different, each independently
- R 3 represents H, alkyl having 1-7 carbon atoms.
- X represents -F.
- L 1 and L 2 represent -F.
- the compound of formula IA is selected from the group consisting of:
- the compound of formula IB is selected from the group consisting of:
- the compound of formula II is selected from the group consisting of:
- R 3 represents H, an alkyl group having 1 to 7 carbon atoms or an alkoxy group having 1 to 7 carbon atoms.
- the R 3 represents H or an alkyl group having 1 to 5 carbon atoms.
- the compound of formula II-1 is selected from the group consisting of:
- the compound of formula II-2 is selected from the group consisting of:
- the compound of formula II-3 is selected from the group consisting of:
- the compound of formula II-4 is selected from the group consisting of:
- the compound of the formula II-5 is selected from the group consisting of the following compounds Group:
- the compound of formula II-6 is selected from the group consisting of:
- the compound of formula II-7 is selected from the group consisting of:
- the compound of formula II-8 is selected from the group consisting of:
- the compound of formula II-9 is selected from the group consisting of the following compounds Group:
- the compound of formula II-10 is selected from the group consisting of:
- the compound of formula II-11 is selected from the group consisting of:
- the compound of formula II-12 is selected from the group consisting of:
- the compound of formula II-13 is selected from the group consisting of:
- R 4 and R 5 are the same or different and each independently represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms;
- the compound of formula III is selected from the group consisting of:
- the R 5 represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms.
- the compound of formula III-1 is selected from the group consisting of:
- the compound of formula III-2 is selected from the group consisting of:
- the compound of formula III-3 is selected from the group consisting of:
- the compound of formula III-4 is selected from the group consisting of:
- the compound of formula III-5 is selected from the group consisting of:
- the compound of formula IV is selected from the group consisting of:
- R 6 and R 7 are the same or different and each independently represents an alkyl group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms, or an alkenyl group having 2 to 7 carbon atoms.
- R 6 and R 7 are the same or different and each independently represents an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, or carbon.
- the compound of formula IV-1 is selected from the group consisting of:
- the compound of formula IV-2 is selected from the group consisting of:
- the compound of formula IV-3 is selected from the group consisting of:
- the compound of formula IV-4 is selected from the group consisting of:
- the compound of the formula I accounts for 5-20% by weight of the total weight of the liquid crystal composition; the compound of the formula II accounts for 10% of the total weight of the liquid crystal composition. 30%; the compound of the formula III is from 1 to 10% by weight based on the total weight of the liquid crystal composition; the compound of the formula IV is from 45 to 75% by weight based on the total weight of the liquid crystal composition.
- the compound of the formula I accounts for 7-17% of the total weight of the liquid crystal composition; the compound of the formula II accounts for 14% of the total weight of the liquid crystal composition. -25%; the compound of the formula III is 4-10% by weight based on the total weight of the liquid crystal composition; the compound of the formula IV is 49-71% by weight based on the total weight of the liquid crystal composition.
- Another aspect of the present invention provides a liquid crystal display device, preferably an AM-driven liquid crystal display device, comprising the liquid crystal composition of the present invention.
- the present invention determines the liquid crystal composition of the present invention by comparison and comparison, and has the characteristics of high resistivity, high voltage holding ratio, high clearing point, suitable optical anisotropy, suitable dielectric anisotropy, small viscosity, low threshold voltage, and the like.
- the liquid crystal composition of the present invention is suitable for use in a liquid crystal display device, so that the liquid crystal display device has characteristics of high voltage holding ratio, short response time, high contrast, low energy consumption, and environmental protection.
- the ratios are all by weight, all temperatures are in degrees Celsius, and the thickness of the test for the response time data is 7 ⁇ m.
- nCGUF The structural formula is expressed by the code listed in Table 1, and can be expressed as: nCGUF, wherein n in the code represents the number of carbon atoms of the left-end alkyl group, for example, n is "2", that is, the alkyl group is -C 2 H 5 ; C in the code stands for “cyclohexane group”, G in the code stands for “2-fluoro-1,4-phenylene”, and U in the code stands for "2,5-difluoro-1,4-phenylene”",” in the code, F stands for "fluorine substituent.”
- V 10 threshold voltage (characteristic voltage at 10% relative contrast)
- VHR (UV) Voltage retention rate after UV light irradiation for 20 minutes (%)
- VHR high temperature: Voltage holding ratio after 1 h at 150 ° C (%)
- optical anisotropy was measured using an Abbe refractometer under a sodium light (589 nm) light source at 25 ° C; V 10 test conditions: C/1 KHZ, JTSB 7.0;
- ⁇ ⁇ - ⁇ , where ⁇ is the dielectric constant parallel to the molecular axis, ⁇ is the dielectric constant perpendicular to the molecular axis, test conditions: 25°C, 1KHz, test box is TN90 type, box thickness 7 ⁇ m;
- Resistivity ( ⁇ ; measured at 25 ° C; ⁇ , cm)
- the resistivity ⁇ is calculated by the following formula:
- VHR (initial) was tested using the TOY06254 liquid crystal physical property evaluation system; the test temperature was 60 ° C, the test voltage was 5 V, and the test frequency was 6 Hz;
- VHR (UV) was tested using the TOY06254 liquid crystal physical property evaluation system; the liquid crystal was irradiated with light having a wavelength of 365 nm and an energy of 6000 mJ/cm 2 for 20 min, and the test temperature was 60 ° C, the test voltage was 5 V, and the test frequency was 6 Hz;
- VHR high temperature
- liquid crystal physical property evaluation system liquid crystal is tested at 150 ° C for 1 h, the test temperature is 60 ° C, the test voltage is 5 V, and the test frequency is 6 Hz;
- the components used in the following examples can be synthesized by a known method or obtained commercially. These synthetic techniques are conventional, and each of the obtained liquid crystal compounds has been tested to meet the standards of electronic compounds.
- a liquid crystal composition was prepared in accordance with the ratio of each liquid crystal composition specified in the following examples.
- the preparation of the liquid crystal composition is carried out according to a conventional method in the art, such as heating, ultrasonic wave, suspension, etc., in a predetermined ratio.
- liquid crystal composition given in the following examples was prepared and studied.
- the composition of each liquid crystal composition and the test results of its performance parameters are shown below.
- the liquid crystal compositions of Comparative Example 1 were prepared according to the respective compounds and weight percentages listed in Table 2, and were filled in the performance test between the two substrates of the liquid crystal display.
- the test data are shown in the following table:
- the liquid crystal compositions of Comparative Example 2 were prepared according to the respective compounds and weight percentages listed in Table 3, and were filled in the performance test between the two substrates of the liquid crystal display.
- the test data are shown in the following table:
- Example 1 The liquid crystal composition of Example 1 was prepared according to each compound and weight percentage listed in Table 4, and was filled between two substrates of the liquid crystal display for performance test.
- the test data are shown in the following table:
- Example 2 The liquid crystal composition of Example 2 was prepared according to each compound and weight percentage listed in Table 5, and was filled in the performance test between the two substrates of the liquid crystal display. The test data are shown in the following table:
- Example 3 The liquid crystal composition of Example 3 was prepared according to each compound and weight percentage listed in Table 6, and was filled in the performance test between the two substrates of the liquid crystal display. The test data are shown in the following table:
- Example 4 The liquid crystal composition of Example 4 was prepared according to each compound and weight percentage listed in Table 7, and was filled in the performance test between the two substrates of the liquid crystal display.
- the test data is shown in the following table:
- Example 5 The liquid crystal composition of Example 5 was prepared according to each compound and weight percentage listed in Table 8, and was filled in the performance test between the two substrates of the liquid crystal display.
- the test data is shown in the following table:
- Example 6 The liquid crystal composition of Example 6 was prepared according to each compound and weight percentage listed in Table 9, and was filled in the performance test between the two substrates of the liquid crystal display.
- the test data is as shown in the following table:
- Example 7 The liquid crystal composition of Example 7 was formulated according to each compound and weight percentage listed in Table 10, and filled in the liquid. Performance testing between the two substrates of the crystal display, the test data is shown in the following table:
- the invention discards the chlorine-containing monomer to achieve the technical effect of environmental protection, and the difluoroether monomer has a better voltage holding ratio than the ordinary medium-polar monomer.
- the liquid crystal composition of the present invention has high electrical resistivity, high clearing point, suitable optical anisotropy, suitable dielectric anisotropy, low viscosity, and high temperature storage stability. The advantages are better voltage retention, better display contrast, fast response speed, and lower power consumption, which are suitable for use in display devices.
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Abstract
一种液晶组合物，包含:占所述液晶组合物总重量1-30%的一种或更多种通式I的化合物;占所述液晶组合物总重量1-30%的一种或更多种通式II的化合物;占所述液晶组合物总重量1-20%的一种或更多种通式III的化合物;以及占所述液晶组合物总重量30-80%的一种或更多种通式IV的化合物。所述的液晶组合物具备电阻率大、电压保持率高、光学各向异性适宜、介电各向异性大、粘度小、闽值电压低等特性中的至少一种特性，且又绿色环保。所述的液晶组合物适用于液晶显示器件中，使得液晶显示器件具有电压保持率高、响应时间短、对比度高、能耗低、绿色环保等特性。
Description
本发明涉及一种液晶组合物以及含有该组合物的液晶显示器件，尤其涉及有主动矩阵(active matrix,AM)并采用薄膜晶体管(TFT)来进行驱动的液晶显示器件。
液晶显示器件用于信息显示的众多领域，用于直视显示器也用于投影型显示器。
一般显示模式分为PC(phase change，相变)、TN(twist nematic，扭曲向列)、STN(super twisted nematic，超扭曲向列)、ECB(electrically controlled birefringence，电控双折射)、OCB(optically compensated bend，光学补偿弯曲)、IPS(in-plane switching，共面转变)、VA(vertical alignment，垂直配向)等类型。
工作在TN、STN模式的器件使用正介电各项异性液晶，而工作在ECB、VA模式的器件使用负介电各项异性液晶，IPS模式及可使用正介电各项异性液晶，也可使用负介电各项异性液晶。
根据器件的驱动方式又分为PM(passive matrix，被动矩阵)型和AM(active matrix，主动矩阵)型。AM分为TFT(thin film transistor，薄膜晶体管)、MIM(metal insulator metal，金属-绝缘层-金属)等类型。
现阶段人们更关注于液晶显示的多样化，大尺寸，高清晰，快响应显示等，为达到上述要求必须采用主动矩阵(AM)方式驱动，而目前较多的是采用薄膜晶体管(TFT)来进行驱动。在AM-TFT显示器件中，液晶材料作为介质和液晶盒组成一个电容，但实际应用中，该电容无法将电压保持到下一次更新画面。为解决这个问题，需要在每个像素点上设计一个场效应开关管，在处于导通的有限时间内TFT开关打开对像素电极进行充电，关闭时TFT对电容进行充电，直至下一周期中再被寻址。而像素点的放电速度取决于电极容量和电极间介电材料的电阻率，因此需要液晶材料具有较高的电阻率以及合适的介电常数。
含有电阻率大的液晶材料的液晶显示器件能够增大电压保持率，并能增大对比度。因而，液晶材料需要在初期具有大的电阻率值、即使进一步长时间使用后仍具有大的电阻率值。
含有光学各向异性适当的液晶材料的液晶显示器件能够增大对比度。
含有粘度小的液晶材料的液晶显示器件能够缩短响应时间。当液晶显示器件的响应时间短时，可适用于动画显示。另外，向液晶显示器件的液晶盒内注入液晶材料时，可缩短注入时间，能够提高作业性。
因此，通过液晶材料的优化，来提高电阻率、电压保持率，并且获得适宜的光学各向异性、低的粘度、低的阈值电压、大的介电各项异性，是本领域技术人员的努力方向。
现有技术公开了具有较高电压保持率，低功耗，快响应的液晶组合物，如专利文献CN102858918A，但现有技术中存在环保问题(如含氯化合物的使用)以及无法兼顾在液晶电视、平板电脑等要求高电阻率、低温存储稳定性、适当高的光学各向异性、高的介电各向异性、快的响应速度、低的驱动电压及低粘度的性能均衡问题，不能同时满足各方面指标。
从液晶材料的制备角度出发，液晶材料的各项性能是互相牵制影响的，某项性能指标的提升可能会使其他性能发生变化。因此，制备各方面性能都合适的液晶材料往往需要创造性劳动。
液晶材料是液晶显示器的重要组成部分，而目前全球液晶显示器具有很大的市场需求，多用于电子电器产品中，但其生命周期较短。较短的生命周期自然存在废弃污染等问题，在如今绿色环保问题日益受到社会各界的重视的情况下，如若能从源头控制，即在液晶材料的调制过程中选择环保绿色的材料，就能极大降低处理废弃液晶显示器时所付出的环境代价。因此，制备各方面性能都合适，且又经济、绿色环保的液晶材料往往更需要创造性劳动。
本发明的目的是提供一种液晶组合物，其具备电阻率大、电压保持率高、清亮点高、光学各向异性适宜、介电各向异性适宜、粘度小、阈值电压低等特性中的至少一种特性；本发明弃用含氯单体以达到绿色环保的技术效果，利用二氟醚类单体来弥补阈值电压升高，清亮点和光学各项异性降低的缺陷，且二氟醚类单体相对于普通中极性单体具有更快的响应速度，电压保持率更好。
本发明的其他目的是提供一种液晶显示器件，其是具有电阻率大、电压保持率高、清亮点高、光学各向异性适宜、介电各向异性适宜、粘度小、阈值电压低等特性中至少一种特性的组合物，并且该AM器件具有电压保持率高、响应时间短、对比度高、能耗低、绿色环保等特性。
发明内容
本发明的目的是提供一种具有电阻率大、电压保持率高、清亮点高、光学各向异性适宜、介电各向异性适宜、粘度小、阈值电压低等特性中的至少一种特性，且又绿色环保的液晶组合物。
(上文指出现有技术中存在液晶组合物的“性能均衡问题，不能同时满足各方面指标”。请确认在发明目的中是否需要突出：本申请的液晶组合物在具有绿色环保特性的同时具有上述特性中的至少一种特性。)
本发明的其它目的是提供一种液晶显示器件，其包含具有电阻率大、电压保持率高、清亮点高、光学各向异性适宜、介电各向异性适宜、粘度小、阈值电压低等特性中的至少一种特性，且又绿色环保的液晶组合物，使得液晶显示器件具有较高的电压保持率、较高的对比度、较低的阈值电压、快的响应速度、优越的省电性能。
为了实现上述发明目的，本发明提供一种液晶组合物，所述液晶组合物包含：
占所述液晶组合物总重量1-30％的一种或多种通式Ⅰ的化合物
占所述液晶组合物总重量1-30％的一种或多种通式Ⅱ的化合物
占所述液晶组合物总重量1-20％的一种或多种通式Ⅲ的化合物
占所述液晶组合物总重量30-80％的一种或多种通式Ⅳ的化合物
其中，
R、R4、R5、R6和R7相同或不同，各自独立地表示碳原子数为1-7的烷基、碳原子数为1-7的烷氧基或碳原子数为2-7的烯基；
R3表示H、碳原子数为1-7的烷基、碳原子数为1-7的烷氧基或碳原子数为2-7的烯基；
环
表示
环
和环
相同或不同，各自独立地表示
Y表示-CF3或-OCF3；
X表示-F或-OCF2-CF＝CF2；
L1和L2相同或不同，各自独立地表示-H或-F；
m表示1、2或3；
n表示1或2；
当m是2或3时，环
的个数为复数，环
可相同或不同，各自独立地表示
当n是2时，环
的个数为复数，环
可相同或不同，各自独立地表示
在本发明的实施方案中，所述通式Ⅰ的化合物选自由下列化合物组成的组
其中，
R1、R2相同或不同，各自独立地表示碳原子数为1-7的烷基、碳原子数为1-7的烷氧基。
在本发明的实施方案中，所述通式ⅠA的化合物占所述液晶组合物总重量的1-30％。
在本发明的实施方案中，优选地，所述通式ⅠA的化合物占所述液晶组合物总重量的1-15％。
在本发明的实施方案中，更优选地，所述通式ⅠA的化合物占所述液晶组合物总重量的5-9％。
在本发明的实施方案中，所述通式ⅠB的化合物占所述液晶组合物总重量的1-30％。
在本发明的实施方案中，优选地，所述通式ⅠB的化合物占所述液晶组合物总重量的1-15％。
在本发明的实施方案中，更优选地，所述通式ⅠB的化合物占所述液晶组合物总重量的5-9％。
在本发明的实施方案中，优选地，所述液晶组合物包含：
占所述液晶组合物总重量1-30％的一种或更多种选自通式ⅠA的化合物
占所述液晶组合物总重量1-30％的一种或更多种通式Ⅱ的化合物
占所述液晶组合物总重量1-20％的一种或更多种通式Ⅲ的化合物
占所述液晶组合物总重量30-80％的一种或更多种通式Ⅳ的化合物
其中，
R1表示碳原子数为1-7的烷基、碳原子数为1-7的烷氧基；
R3表示H、碳原子数为1-7的烷基、碳原子数为1-7的烷氧基或碳原子数为2-7的烯基；
R4、R5、R6和R7相同或不同，各自独立地表示碳原子数为1-7的烷基、碳原子数为
1-7的烷氧基或碳原子数为2-7的烯基；
环
表示
环
和环
相同或不同，各自独立地表示
X表示-F或-OCF2-CF＝CF2；
L1和L2相同或不同，各自独立地表示-H或-F；
m表示1、2或3；
n表示1或2；
当m是2或3时，环
的个数为复数，环
可相同或不同，各自独立地表示
当n是2时，环
的个数为复数，环
可相同或不同，各自独立地表示
在本发明的实施方案中，优选地，所述液晶组合物包含：
占所述液晶组合物总重量1-30％的一种或更多种选自通式ⅠB的化合物
占所述液晶组合物总重量1-30％的一种或更多种通式Ⅱ的化合物
占所述液晶组合物总重量1-20％的一种或更多种通式Ⅲ的化合物
占所述液晶组合物总重量30-80％的一种或更多种通式Ⅳ的化合物
其中，
R2表示碳原子数为1-7的烷基、碳原子数为1-7的烷氧基；
R3表示H、碳原子数为1-7的烷基、碳原子数为1-7的烷氧基或碳原子数为2-7的烯基；
R4、R5、R6和R7相同或不同，各自独立地表示碳原子数为1-7的烷基、碳原子数为1-7的烷氧基或碳原子数为2-7的烯基；
环
表示
环
和环
相同或不同，各自独立地表示
X表示-F或-OCF2-CF＝CF2；
L1和L2相同或不同，各自独立地表示-H或-F；
m表示1、2或3；
n表示1或2；
当m是2或3时，环
的个数为复数，环
可相同或不同，各自独立地表示
当n是2时，环
的个数为复数，环
可相同或不同，各自独立地表示
在本发明的实施方案中，优选地，所述液晶组合物包含：
占所述液晶组合物总重量1-30％的一种或更多种选自通式ⅠA的化合物
占所述液晶组合物总重量1-30％的一种或更多种选自通式ⅠB的化合物
占所述液晶组合物总重量1-30％的一种或更多种通式Ⅱ的化合物
占所述液晶组合物总重量1-20％的一种或更多种通式Ⅲ的化合物
占所述液晶组合物总重量30-80％的一种或更多种通式Ⅳ的化合物
其中，
R1、R2相同或不同，各自独立地表示碳原子数为1-7的烷基、碳原子数为1-7的烷氧基；
R3表示H、碳原子数为1-7的烷基、碳原子数为1-7的烷氧基或碳原子数为2-7的烯基；
R4、R5、R6和R7相同或不同，各自独立地表示碳原子数为1-7的烷基、碳原子数为1-7的烷氧基或碳原子数为2-7的烯基；
环
表示
环
和环
相同或不同，各自独立地表示
X表示-F或-OCF2-CF＝CF2；
L1和L2相同或不同，各自独立地表示-H或-F；
m表示1、2或3；
n表示1或2；
当m是2或3时，环
的个数为复数，环
可相同或不同，各自独立地表示
当n是2时，环
的个数为复数，环
可相同或不同，各自独立地表示
在本发明的实施方案中，优选地，所述液晶组合物仅包含：
占所述液晶组合物总重量1-30％的一种或更多种选自通式ⅠA的化合物和/或通式ⅠB的化合物
占所述液晶组合物总重量1-30％的一种或更多种通式Ⅱ的化合物
占所述液晶组合物总重量1-20％的一种或更多种通式Ⅲ的化合物
占所述液晶组合物总重量30-80％的一种或更多种通式Ⅳ的化合物
其中，
R1、R2相同或不同，各自独立地表示碳原子数为1-7的烷基、碳原子数为1-7的烷氧基；
R3表示H、碳原子数为1-7的烷基、碳原子数为1-7的烷氧基或碳原子数为2-7的烯基；
R4、R5、R6和R7相同或不同，各自独立地表示碳原子数为1-7的烷基、碳原子数为1-7的烷氧基或碳原子数为2-7的烯基；
环
表示
环
和环
相同或不同，各自独立地表示
X表示-F或-OCF2-CF＝CF2；
L1和L2相同或不同，各自独立地表示-H或-F；
m表示1、2或3；
n表示1或2；
当m是2或3时，环
的个数为复数，环
可相同或不同，各自独立地表示
当n是2时，环
的个数为复数，环
可相同或不同，各自独立地表示
在本发明的一些实施方案中，R3表示H、碳原子数为1-7的烷基。
在本发明的一些实施方案中，环
表示
在本发明的一些实施方案中，环
表示
在本发明的一些实施方案中，环
表示
在本发明的一些实施方案中，X表示-F。
在本发明的一些实施方案中，L1和L2表示-F。
在本发明的实施方案中，优选地，所述通式ⅠA的化合物选自由下列化合物组成的组：
在本发明的实施方案中，优选地，所述通式ⅠB的化合物选自由下列化合物组成的组：
在本发明的实施方案中，优选地，所述通式Ⅱ的化合物选自由下列化合物组成的组：
其中，
R3表示H、碳原子数为1-7的烷基或碳原子数为1-7的烷氧基。
在本发明的实施方案中，更优选地，所述R3表示H或碳原子数为1-5的烷基。
在本发明的实施方案中，更佳优选地，所述通式Ⅱ-1的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅱ-2的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅱ-3的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅱ-4的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅱ-5的化合物选自由下列化合物组成
的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅱ-6的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅱ-7的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅱ-8的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅱ-9的化合物选自由下列化合物组成
的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅱ-10的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅱ-11的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅱ-12的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅱ-13的化合物选自由下列化合物组成的组：
在本发明的实施方案中，优选地，所述R4和R5相同或不同，各自独立地表示碳原子数为1-5的烷基或碳原子数为2-5的烯基；
在本发明的实施方案中，更优选地，所述通式Ⅲ的化合物选自由下列化合物组成的组：
其中，
所述R5表示碳原子数为1-5的烷基或碳原子数为2-5的烯基。
在本发明的实施方案中，更佳优选地，所述通式Ⅲ-1的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅲ-2的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅲ-3的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅲ-4的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅲ-5的化合物选自由下列化合物组成的组：
在本发明的实施方案中，优选地，所述通式Ⅳ的化合物选自由下列化合物组成的组：
其中，
R6和R7相同或不同，各自独立地表示碳原子数为1-7的烷基、碳原子数为1-7的烷氧基，或碳原子数为2-7的烯基。
在本发明的实施方案中，更优选地，R6和R7相同或不同，各自独立地表示碳原子数为1-5的烷基、碳原子数为1-5的烷氧基，或碳原子数为2-5的烯基。
在本发明的实施方案中，更佳优选地，所述通式Ⅳ-1的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅳ-2的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅳ-3的化合物选自由下列化合物组成的组：
在本发明的实施方案中，更佳优选地，所述通式Ⅳ-4的化合物选自由下列化合物组成的组：
在本发明的实施方案中，优选地，所述通式Ⅰ的化合物占所述液晶组合物总重量的5-20％；所述通式Ⅱ的化合物占所述液晶组合物总重量的10-30％；所述通式Ⅲ的化合物占所述液晶组合物总重量的1-10％；所述通式Ⅳ的化合物占所述液晶组合物总重量的45-75％。
在本发明的实施方案中，更优选地，所述通式Ⅰ的化合物占所述液晶组合物总重量的7-17％；所述通式Ⅱ的化合物占所述液晶组合物总重量的14-25％；所述通式Ⅲ的化合物占所述液晶组合物总重量的4-10％；所述通式Ⅳ的化合物占所述液晶组合物总重量的49-71％。
本发明的另一个方面提供一种液晶显示器件，优选AM驱动的液晶显示器件，所述液晶显示器件包含本发明的液晶组合物。
本发明通过对照比较，确定了本发明的液晶组合物，具有电阻率高、电压保持率高、清亮点高、光学各向异性适宜、介电各向异性适宜、粘度小、阈值电压低等特性，本发明所述的液晶组合物适用于液晶显示器件中，使得液晶显示器件具有电压保持率高、响应时间短、对比度高、能耗低、绿色环保等特性。
在本发明中如无特殊说明，所述的比例均为重量比，所有温度均为摄氏温度，所述的响应时间数据的测试选用的盒厚为7μm。
以下将结合具体实施方案来说明本发明。需要说明的是，下面的实施例为本发明的示例，仅用来说明本发明，而不用来限制本发明。在不偏离本发明主旨或范围的情况下，可进行本发明构思内的其他组合和各种改良。
为便于表达，以下各实施例中，液晶组合物的基团结构用表1所列的代码表示：
表1液晶化合物的基团结构代码
以如下结构式的化合物为例：
该结构式如用表1所列代码表示，则可表达为：nCGUF，代码中的n表示左端烷基的碳原子数，例如n为“2”，即表示该烷基为-C2H5；代码中的C代表“环己烷基”，代码中的G代表“2-氟-1,4-亚苯基”，代码中的U代表“2,5-二氟-1,4-亚苯基”，代码中的F代表“氟取代基”。
以下实施例中测试项目的简写代号如下：
Cp： 清亮点(向列-各向同性相转变温度，℃)
Δn： 光学各向异性(589nm，25℃)
Δε： 介电各向异性(1KHz，25℃)
η： 流动粘度(mm2·s-1，25℃，除非另有说明)
V10 阈值电压(在10％相对对比度时的特征电压)
t-30℃ 低温储存时间(在-30℃下)
ρ： 电阻率(25℃，e10.Ω.cm)
VHR(初始)： 初始电压保持率(％)
VHR(UV)： UV光照射20min后的电压保持率(％)
VHR(高温)： 150℃下高温保持1h后的电压保持率(％)
其中，光学各向异性使用阿贝折光仪在钠光灯(589nm)光源下、25℃测试得；V10测试条件：C/1KHZ，JTSB7.0；
Δε＝ε‖-ε⊥，其中，ε‖为平行于分子轴的介电常数，ε⊥为垂直于分子轴的介电常数，测试条件：25℃、1KHz、测试盒为TN90型，盒厚7μm；
电阻率(ρ；在25℃下测定；Ω，cm)
向液体盒中注入1.0ml液晶，施加10V的直流电压。测定施加电压10秒后的盒的直流电流，算出电阻率。
电阻率ρ由下式算出：
(电阻率)＝{(电压)×(盒容量)}/{(自流电流)×(真空介电常数)}
VHR(初始)是使用TOY06254型液晶物性评价系统测试得；测试温度为60℃，测试电压为5V，测试频率为6Hz；
VHR(UV)是使用TOY06254型液晶物性评价系统测试得；使用波长为365nm、能量为6000mJ/cm2的光照射液晶20min后测试，测试温度60℃，测试电压为5V，测试频率为6Hz；
VHR(高温)是使用TOY06254型液晶物性评价系统测试得；液晶在150℃下高温保持1h后测试，测试温度60℃，测试电压为5V，测试频率为6Hz；
在以下的实施例中所采用的各成分，均可以通过公知的方法进行合成，或者通过商业途径获得。这些合成技术是常规的，所得到各液晶化合物经测试符合电子类化合物标准。
按照以下实施例规定的各液晶组合物的配比，制备液晶组合物。所述液晶组合物的制备是按照本领域的常规方法进行的，如采取加热、超声波、悬浮等方式按照规定比例混合制得。
制备并研究下列实施例中给出的液晶组合物。下面显示了各液晶组合物的组成和其性能参数测试结果。
对比例1
按表2中所列的各化合物及重量百分数配制成对比例1的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表2液晶组合物配方及其测试性能
对比例2
按表3中所列的各化合物及重量百分数配制成对比例2的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表3液晶组合物配方及其测试性能
实施例1
按表4中所列的各化合物及重量百分数配制成实施例1的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表4液晶组合物配方及其测试性能
实施例2
按表5中所列的各化合物及重量百分数配制成实施例2的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表5液晶组合物配方及其测试性能
实施例3
按表6中所列的各化合物及重量百分数配制成实施例3的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表6液晶组合物配方及其测试性能
实施例4
按表7中所列的各化合物及重量百分数配制成实施例4的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表7液晶组合物配方及其测试性能
实施例5
按表8中所列的各化合物及重量百分数配制成实施例5的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表8液晶组合物配方及其测试性能
实施例6
按表9中所列的各化合物及重量百分数配制成实施例6的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表9液晶组合物配方及其测试性能
实施例7
按表10中所列的各化合物及重量百分数配制成实施例7的液晶组合物，其填充于液
晶显示器两基板之间进行性能测试，测试数据如下表所示：
表10液晶组合物配方及其测试性能
本发明弃用含氯单体而达到绿色环保的技术效果，且二氟醚类单体相对于普通中极性单体具有较好的电压保持率。通过对比实施例与对比例，本发明的液晶组合物具有高的电阻率，高的清亮点，合适的光学各向异性，合适的介电各向异性，粘度低，低温存储稳定性强，其优点在于较好的电压保持率、较好的显示对比度，快的响应速度，较低的功耗，适用于显示器件中。
以上实施方式只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人了解本发明内容并加以实施，并不能以此限制本发明的保护范围，凡根据本发明精神实质所做的等效变化或修饰，都应涵盖在本发明的保护范围内。
Claims (13)
- 一种液晶组合物，包括：占所述液晶组合物总重量1-30％的一种或更多种通式Ⅰ的化合物
占所述液晶组合物总重量1-30％的一种或更多种通式Ⅱ的化合物
占所述液晶组合物总重量1-20％的一种或更多种通式Ⅲ的化合物
占所述液晶组合物总重量30-80％的一种或更多种通式Ⅳ的化合物
其中，R、R4、R5、R6和R7相同或不同，各自独立地表示碳原子数为1-7的烷基、碳原子数为1-7的烷氧基或碳原子数为2-7的烯基；R3表示H、碳原子数为1-7的烷基、碳原子数为1-7的烷氧基或碳原子数为2-7的烯基；环表示
环和环
相同或不同，各自独立地表示
Y表示-CF3或-OCF3；X表示-F或-OCF2-CF＝CF2；L1和L2相同或不同，各自独立地表示-H或-F；m表示1、2或3；n表示1或2；当m是2或3时，环可相同或不同，各自独立地表示
当n是2时，环可相同或不同，各自独立地表示
- 根据权利要求1所述的液晶组合物，其特征在于，所述通式Ⅰ的化合物选自下列化合物组成的组：
其中，R1、R2相同或不同，各自独立地表示碳原子数为1-7的烷基、碳原子数为1-7的烷氧基。 - 根据权利要求2所述的液晶组合物，其特征在于，所述通式ⅠA的化合物占所述液晶组合物总重量的1-30％。
- 根据权利要求2所述的液晶组合物，其特征在于，所述通式ⅠB的化合物占所述液晶组合物总重量的1-30％。
- 根据权利要求2所述的液晶组合物，其特征在于，所述通式ⅠA的化合物选自由下列化合物组成的组：
所述通式Ⅰ B的化合物选自由下列化合物组成的组：
- 根据权利要求1所述的液晶组合物，其特征在于，所述通式Ⅱ的化合物选自由下列化合物组成的组：
其中，R3表示H、碳原子数为1-7的烷基、碳原子数为1-7的烷氧基。 - 根据权利要求6所述的液晶组合物，其特征在于，所述通式Ⅱ-1的化合物选自由下列化合物组成的组：
所述通式Ⅱ-2的化合物选自由下列化合物组成的组：
所述通式Ⅱ-3的化合物选自由下列化合物组成的组：
所述通式Ⅱ-4的化合物选自由下列化合物组成的组：
所述通式Ⅱ-5的化合物选自由下列化合物组成的组：
所述通式Ⅱ-6的化合物选自由下列化合物组成的组：
所述通式Ⅱ-7的化合物选自由下列化合物组成的组：
所述通式Ⅱ-8的化合物选自由下列化合物组成的组：
所述通式Ⅱ-9的化合物选自由下列化合物组成的组：
所述通式Ⅱ-10的化合物选自由下列化合物组成的组：
所述通式Ⅱ-11的化合物选自由下列化合物组成的组：
所述通式Ⅱ-12的化合物选自由下列化合物组成的组：
所述通式Ⅱ-13的化合物选自由下列化合物组成的组：
- 根据权利要求1所述的液晶组合物，其特征在于，所述通式Ⅲ的化合物选自由下列化合物组成的组：
其中，所述R5表示碳原子数为1-5的烷基或碳原子数为2-5的烯基。 - 根据权利要求8所述的液晶组合物，其特征在于，所述通式Ⅲ-1的化合物选自由下列化合物组成的组：
所述通式Ⅲ-2的化合物选自由下列化合物组成的组：
所述通式Ⅲ-3的化合物选自由下列化合物组成的组：
所述通式Ⅲ-4的化合物选自由下列化合物组成的组：
所述通式Ⅲ-5的化合物选自由下列化合物组成的组：
- 根据权利要求1所述的液晶组合物，其特征在于，所述通式Ⅳ的化合物选自由下列化合物组成的组：
其中，R6和R7相同或不同，各自独立地表示碳原子数为1-7的烷基、碳原子数为1-7的烷氧基，或碳原子数为2-7的烯基。 - 根据权利要求10所述的液晶组合物，其特征在于，所述通式Ⅳ-1的化合物选自由下列化合物组成的组：
所述通式Ⅳ-2的化合物选自由下列化合物组成的组：
所述通式Ⅳ-3的化合物选自由下列化合物组成的组：
所述通式Ⅳ-4的化合物选自由下列化合物组成的组：
- 根据权利要求1-11中任一项所述的液晶组合物，其特征在于，所述通式Ⅰ的化合物占所述液晶组合物总重量的5-20％；所述通式Ⅱ的化合物占所述液晶组合物总重量的10-30％；所述通式Ⅲ的化合物占所述液晶组合物总重量的1-10％；所述通式Ⅳ的化合物占所述液晶组合物总重量的45-75％。
- 一种液晶显示器件，所述液晶显示器件包含权利要求1至12中的任一项所述的液晶组合物。
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| CN106147785B (zh) * | 2015-04-23 | 2018-02-16 | 江苏和成显示科技股份有限公司 | 液晶组合物及其液晶显示器件 |
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Also Published As
| Publication number | Publication date |
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| US10723947B2 (en) | 2020-07-28 |
| CN106147786B (zh) | 2018-10-30 |
| TWI681042B (zh) | 2020-01-01 |
| CN106147786A (zh) | 2016-11-23 |
| US20180105747A1 (en) | 2018-04-19 |
| TW201638310A (zh) | 2016-11-01 |
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