CN109722256B - Liquid crystal composition and application thereof - Google Patents
Liquid crystal composition and application thereof Download PDFInfo
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- CN109722256B CN109722256B CN201711026953.5A CN201711026953A CN109722256B CN 109722256 B CN109722256 B CN 109722256B CN 201711026953 A CN201711026953 A CN 201711026953A CN 109722256 B CN109722256 B CN 109722256B
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Abstract
The invention relates toA fast response liquid crystal composition comprises at least one or more compounds represented by a general formula I, one or more compounds represented by a general formula II and one or more compounds represented by a general formula III. The liquid crystal composition has low rotational viscosity, large elastic constant, good low-temperature intersolubility and high response speed, can be used for fast response liquid crystal display of various display modes, can obviously improve the display effect of a liquid crystal display when being used in a TN, IPS or FFS mode display, and is particularly suitable for IPS and FFS mode liquid crystal displays.
Description
Technical Field
The invention relates to the field of liquid crystal materials and application thereof, and the liquid crystal material provided by the invention is a nematic phase liquid crystal composition.
Background
Liquid crystals are currently widely used in the field of information display, and have been used in optical communications (s.t.wu, d.k.yang.reflective Liquid Crystal display. wiley, 2001). In recent years, the application fields of liquid crystal compounds have been remarkably widened to various display devices, electro-optical devices, electronic components, sensors, and the like, and nematic liquid crystal compounds have been most widely used in flat panel displays, particularly in systems of TFT active matrix.
Liquid crystal display has experienced a long development route along with the discovery of liquid crystals. In 1888, the first liquid crystal material, cholesterol benzoate (cholestyrylbenzoate), was discovered by the austria phytologist Friedrich reintzer. In 1917, Manguin invented rubbing alignment method to make single domain liquid crystal and study optical anisotropy. The theory of scraping (Swarm) was established by e.bose in 1909 and supported by l.s.ormstein and f.zernike et al (1918), which were later discussed as statistical fluctuations by De Gennes. G.w.oseen and h.zocher created continuum theory in 1933 and was perfected by f.c.frank (1958). M.born (1916) and k.lichtennecker (1926) discovered and studied the dielectric anisotropy of liquid crystals. In 1932, w.kast accordingly classified the nematic phase into two main classes, positive and negative. In 1927, v.freedericksz and v.zolonao found that nematic liquid crystals deformed and had a voltage threshold (freedericksz transition) under the action of an electric or magnetic field. This finding provides the basis for the fabrication of liquid crystal displays.
In 1968, R.Williams, RCA corporation in America, discovered that nematic liquid crystals form fringe domains under the action of an electric field and have a light scattering phenomenon. The g.h.heilmeir was subsequently developed into a dynamic scattering display mode and made the first Liquid Crystal Display (LCD) in the world. In the early seventies, Helfrich and Schadt invented the TN principle, and people made them into display devices (TN-LCD) by using the combination of TN photoelectric effect and integrated circuit, thus developing a broad prospect for the application of liquid crystal. Since the seventies, the application of liquid crystal in display has been developed in a breakthrough due to the development of large-scale integrated circuits and liquid crystal materials, and the Super Twisted Nematic (STN) mode proposed by t.scheffer et al in 1983-1985 and the Active Matrix (AM) mode proposed by p.brody in 1972 were adopted again. Conventional TN-LCD technology has been developed into STN-LCD and TFT-LCD technology, and although the number of scan lines of STN can reach 768 lines or more, problems of response speed, viewing angle, gray scale and the like still exist when the temperature rises, so that the active matrix display mode is mostly adopted for large-area, high-information content and color display. TFT-LCD has been widely used in direct view televisions, large screen projection televisions, computer terminal displays and some military instrument displays, and TFT-LCD technology is believed to have wider application prospects.
Where "active matrix" includes two types: 1. OMS (metal oxide semiconductor) or other diodes on a silicon wafer as a substrate. 2. A Thin Film Transistor (TFT) on a glass plate as a substrate.
The use of single crystal silicon as a substrate material limits the display size because of the many problems that arise with the assembly of parts of the display device and even the modules at their junctions. Thus, the second type of thin film transistor is a promising type of active matrix, and the photoelectric effect utilized is typically the TN effect. TFTs include compound semiconductors, such as CdSe, or TFTs based on polycrystalline or amorphous silicon.
At present, the technology of LCD products has matured, and the technical problems of viewing angle, resolution, color saturation and brightness, etc. are successfully solved, and the display performance of the LCD products is close to or exceeds that of CRT displays. Large-sized and medium-sized LCDs have gradually occupied the mainstream position of flat panel displays in their respective fields. However, the response time is a major factor affecting high performance displays due to the limitations (high viscosity) of the liquid crystal material itself.
Specifically, the response time of the liquid crystal is limited by the rotational viscosity γ 1 and the elastic constant of the liquid crystal, and reducing the rotational viscosity and increasing the elastic constant of the liquid crystal composition have significant effects on reducing the response time of the liquid crystal display and increasing the response speed of the liquid crystal display.
Disclosure of Invention
The invention aims to provide a fast response liquid crystal composition, which has large elastic constant, low rotational viscosity and fast response time and can greatly improve the response time of a liquid crystal display; in addition, the large elastic constant can promote the afterimage recovery of the liquid crystal display, improve the afterimage performance of the liquid crystal display and improve the quality of the liquid crystal display.
The liquid crystal composition comprises at least one or more compounds represented by a general formula I, one or more compounds represented by a general formula II and one or more compounds represented by a general formula III;
the invention provides a fluoro terphenyl structure compound represented by a general formula I, which is specifically shown as follows:
in the general formula I, R1Represents C1～C12Wherein one or more non-adjacent CH2May each be independently substituted with O, S or CH ═ CH; x1Representative F, CF3、OCF3；
The compound represented by the general formula II provided by the invention is of a bicyclic structure, and the general formula II is specifically as follows:
in the general formula II, R2、R3Each independently represents C1～C12Wherein one or more non-adjacent CH2May each be independently substituted with O, S or CH ═ CH; a. the1、A2Each independently represents trans-1, 4-cyclohexyl or 1, 4-phenylene;
the compound represented by the general formula III provided by the invention is a terphenyl compound, and the general formula III is specifically as follows:
in the general formula III, R4、R5Each independently represents C1～C12Wherein one or more non-adjacent CH2Each independently may be substituted with O, S or CH ═ CH.
The compound represented by the general formula I has large optical anisotropy and large dielectric anisotropy. The compound of the general formula I is one or more of structures shown in formulas IA-IC:
in the formulae IA to IC, R1Represents C1～C7The linear alkyl group of (1);
preferably, in said formulae IA to IC, R1Represents C1～C5The linear alkyl group of (1);
more preferably, the compound represented by the general formula I is selected from one or more compounds represented by formulas IA 1-IA 5, IB 1-IB 5 or IC 1-IC 5:
further preferably, the compound represented by the general formula I is selected from one or more of IA2, IA3, IA5, IC2 and IC 3; particularly preferably, the compound represented by the general formula I is one or two of IA2 and IA 3.
The compound represented by the general formula II provided by the invention has very low rotary viscosity, and the compound represented by the general formula II is one or more of structures shown in formulas IIA-IIC:
in the formulae IIA to IIC, R2Represents C1～C7The linear alkyl group of (1); r3Represents C1～C7Linear alkyl, linear alkoxy or C2～C7A linear alkenyl group of (a);
preferably, R3Represents C1～C5Linear alkyl, linear alkoxy or C2～C5A linear alkenyl group of (a);
more preferably, the compound represented by the general formula II is selected from one or more of the following formulas IIA 1-IIA 38, IIB 1-IIB 24 or IIC 1-IIC 38:
further preferably, the compound represented by the general formula II is selected from one or more of formulae IIA2, IIA4, IIA6, IIA8, IIA14, IIA22, IIA26, IIA27, IIB14, IIB18, IIB22, IIC2, IIC4, IIC6, IIC22, IIC26, IIC29, IIC 30; particularly preferably, the compound represented by the general formula II is selected from one or more of the compounds represented by the formulas IIA2, IIA6, IIA14, IIB22, IIC4, IIC29 and IIC 30.
The compound represented by the general formula III has large optical anisotropy, and is selected from one or more of formulas IIIA to IIIC:
in the formulas IIIA to IIIC, R4、R5Each independently represents C1～C7The linear alkyl group of (1);
preferably, in the formulas IIIA to IIIC, R4、R5Each independently represents C1～C5The linear alkyl group of (1);
more preferably, the compound represented by formula III is selected from one or more of formulae IIIA 1-IIIA 16, formulae IIIB 1-IIIB 4, or formulae IIIC 1-IIIC 4:
further preferably, the compound represented by the general formula III is selected from one or more of IIIA2, IIIA3, IIIA4, IIIA6, IIIB1, IIIB2, IIIB3, IIIC1 and IIIC 2; particularly preferably, the compound represented by the general formula III is selected from one or more of IIIA2, IIIA3, IIIA4, IIIB1 and IIIC 1.
The liquid crystal composition provided by the invention also comprises one or more compounds represented by the general formula IV:
in the general formula IV, R6、R7Each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); a. the3Represents trans-1, 4-cyclohexyl or 1, 4-phenylene;
preferably, the compound represented by formula IV is selected from one or more of IVA to IVC:
in the general formulae IVA to IVC, R6Represents C2～C7Straight chain alkyl or C2～C7A linear alkenyl group; r7Represents C1～C8The linear alkyl group of (1);
more preferably, the compound represented by the general formula IV is selected from one or more of formulas IVA 1-IVA 18, IVB 1-IVB 22 or IVC 1-IVC 30:
further preferably, the compound represented by the general formula IV is selected from one or more of formulae IVA1, IVA2, IVA8, IVA12, IVA16, IVB5, IVB12, IVB16, IVB 18; particularly preferably, the compound represented by formula IV is selected from one or more of the compounds represented by formula IVA1, IVA2, IVA8, IVB12 and IVB 16.
The liquid crystal composition provided by the invention also comprises one or more compounds represented by the general formula V:
in the general formula V, R8Represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); a. the4Represents trans-1, 4-cyclohexyl or 1, 4-phenylene;
preferably, the compound represented by formula V is selected from one or more of formulae VA to VD:
in the formulae VA to VD, R8Represents C1～C7The linear alkyl group of (1);
more preferably, in the formulae VA to VD, R8Represents C2～C5The linear alkyl group of (1);
the liquid crystal composition provided by the invention also comprises one or more compounds represented by the general formula VI:
in the general formula VI, R9Represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); l is1Represents F or H; a. the5Represents trans-1, 4-cyclohexyl or 1, 4-phenylene in which one or more H atoms on the phenyl ring may be substituted by F atoms;
preferably, the compound represented by formula VI is selected from one or more of formulae VIA to VIE:
in the formulae VIA to VIE, R9Represents C1～C7Linear alkyl, linear alkoxy or C2～C7A linear alkenyl group of (a);
more preferably, in the formulae VIA to VIE, R9Represents C2～C5Linear alkyl or linear alkenyl of (1).
The liquid crystal composition provided by the invention also comprises one or more compounds represented by the general formula VII:
in the general formula VII, R10Represents C1～C12Straight chain alkyl or C2～C12A linear alkenyl group of (a); l is2、L3Each independently represents H or F;
the compound represented by the general formula VII has a high clearing point and a large dielectric anisotropy,
preferably, the compound represented by formula VII is selected from one or more of formulas VIIA to VIIC:
in the formulas VIIA to VIIC, R10Represents C1～C7The linear alkyl group of (1);
more preferably, in said formulas VIIA to VIIC, R10Each independently represents a group C2～C5Linear alkyl group of (1).
The liquid crystal composition provided by the invention also comprises one or more compounds represented by the general formula VIII:
in the general formula VIII, R11、R12Each independently represents C1～C12Straight chain alkyl or C2～C12A linear alkenyl group of (a); l is4Represents H or F;
the compound represented by the general formula VIII has a large optical anisotropy and a high clearing point;
preferably, the compound represented by formula VIII is selected from one or more of formulas VIIIA through VIIIB:
in the formulas VIIIA to VIIIB, R11、R12Each independently represents C1～C7The linear alkyl group of (1);
more preferably, in said formulae VIIIA to VIIIB, R11、R12Each independently represents C2～C5Linear alkyl group of (1).
The liquid crystal composition provided by the invention also comprises one or more compounds represented by the general formula IX:
in said formula IX, R13Represents C1～C12The linear alkyl group of (1); n is 0 or 1; a. the6、A7、A8Each independently represents:
preferably, the compound represented by formula IX is selected from one or more of formulae IXA to IXH:
in the formulae IXA to IXH, R13Represents C1～C7The linear alkyl group of (1);
more preferably, in the formulae IXA to IXH, R13Represents C2～C5Linear alkyl group of (1).
In order to improve the synergistic effect between the various types of compounds, the present invention preferably provides the liquid crystal composition with a percentage of each component.
Specifically, the liquid crystal composition comprises the following components in percentage by weight:
(1)1 to 30 parts of a compound represented by the general formula I;
(2) 30-70% of a compound represented by general formula II;
(3) 1-45% of a compound represented by general formula III;
(4)0 to 40% of a compound represented by the general formula IV;
(5)0 to 15% of a compound represented by the general formula V;
(6)0 to 20% of a compound represented by the general formula VI;
(7)0 to 20% of a compound represented by the general formula VII;
(8)0 to 15% of a compound represented by general formula VIII;
(9)0 to 40% of a compound represented by the general formula IX;
the invention further provides a liquid crystal composition which comprises the following components in percentage by weight:
(1) 3-20% of a compound represented by general formula I;
(2) 40-65% of a compound represented by general formula II;
(3)1 to 32% of a compound represented by the general formula III;
(4)0 to 23% of a compound represented by the general formula IV;
(5)0 to 8% of a compound represented by the general formula V;
(6)0 to 15% of a compound represented by the general formula VI;
(7)0 to 14% of a compound represented by the general formula VII;
(8)0 to 8% of a compound represented by the general formula VIII;
(9)0 to 25% of a compound represented by the general formula IX;
preferably, the liquid crystal composition comprises the following components in percentage by weight:
(1) 4-17% of a compound represented by general formula I;
(2) 45-60% of a compound represented by general formula II;
(3) 2-27% of a compound represented by formula III;
(4)0 to 27% of a compound represented by the general formula IV;
(5)0 to 5% of a compound represented by the general formula V;
(6)0 to 10% of a compound represented by the general formula VI;
(7)0 to 9% of a compound represented by the general formula VII;
(8)0 to 5% of a compound represented by the general formula VIII;
(9)0 to 20% of a compound represented by the general formula IX;
the invention further provides a liquid crystal composition which comprises the following components in percentage by weight:
(1) 3-20% of a compound represented by general formula I;
(2) 45-65% of a compound represented by general formula II;
(3) 1-15% of a compound represented by general formula III;
(4)1 to 32% of a compound represented by the general formula IV;
(5)0 to 7% of a compound represented by the general formula V;
(6)0 to 7% of a compound represented by the general formula VI;
(7)0 to 10% of a compound represented by the general formula VII;
(8)0 to 8% of a compound represented by the general formula VIII;
(9)0 to 25% of a compound represented by the general formula IX;
preferably, the liquid crystal composition comprises the following components in percentage by weight:
(1) 4-17% of a compound represented by general formula I;
(2) 48-60% of a compound represented by general formula II;
(3) 2-10% of a compound represented by the general formula III;
(4) 10-27% of a compound represented by formula IV;
(5)0 to 5% of a compound represented by the general formula V;
(6)0 to 5% of a compound represented by the general formula VI;
(7)0 to 7% of a compound represented by the general formula VII;
(8)0 to 5% of a compound represented by the general formula VIII;
(9)0 to 20% of a compound represented by the general formula IX;
the invention further provides a liquid crystal composition which comprises the following components in percentage by weight:
(1) 3-15% of a compound represented by general formula I;
(2) 40-60% of a compound represented by general formula II;
(3) 10-32% of a compound represented by the general formula III;
(4)0 to 15% of a compound represented by the general formula VI;
(5)0 to 15% of a compound represented by the general formula VII;
(6) 1-25% of a compound represented by formula IX;
preferably, the liquid crystal composition comprises the following components in percentage by weight:
(1) 4-11% of a compound represented by formula I;
(2) 45-60% of a compound represented by general formula II;
(3)14 to 27% of a compound represented by the general formula III;
(4)0 to 10% of a compound represented by the general formula VI;
(5)0 to 9% of a compound represented by the general formula VII;
(6) 2-18% of a compound represented by formula IX;
the invention further provides a liquid crystal composition which comprises the following components in percentage by weight:
(1) 3-21% of a compound represented by general formula I;
(2) 40-65% of a compound represented by general formula II;
(3) 2-32% of a compound represented by the general formula III;
(4)0 to 32% of a compound represented by the general formula IV;
(5)0 to 8% of a compound represented by the general formula V;
(6)0 to 15% of a compound represented by the general formula VI;
(7)0 to 14% of a compound represented by the general formula VII;
(8)0 to 8% of a compound represented by the general formula VIII;
(9) 1-25% of a compound represented by formula IX;
preferably, the liquid crystal composition comprises the following components in percentage by weight:
(1) 4-17% of a compound represented by general formula I;
(2) 45-60% of a compound represented by general formula II;
(3) 3-27% of a compound represented by formula III;
(4)0 to 27% of a compound represented by the general formula IV;
(5)0 to 5% of a compound represented by the general formula V;
(6)0 to 10% of a compound represented by the general formula VI;
(7)0 to 9% of a compound represented by the general formula VII;
(8)0 to 5% of a compound represented by the general formula VIII;
(9) 2-20% of a compound represented by formula IX;
the invention further provides a liquid crystal composition which comprises the following components in percentage by weight:
(1) 5-15% of a compound represented by general formula I;
(2) 55-65% of a compound represented by general formula II;
(3) 1-9% of a compound represented by general formula III;
(4) 10-23% of a compound represented by formula IV;
(5)0 to 8% of a compound represented by the general formula V;
(6)0 to 7% of a compound represented by the general formula VI;
(7)0 to 9% of a compound represented by the general formula VII;
(8)0 to 8% of a compound represented by the general formula VIII;
preferably, the liquid crystal composition comprises the following components in percentage by weight:
(1) 9-10% of a compound represented by general formula I;
(2) 59-60% of a compound represented by general formula II;
(3) 2-6% of a compound represented by the general formula III;
(4) 15-19% of a compound represented by formula IV;
(5)0 to 5% of a compound represented by the general formula V;
(6)0 to 5% of a compound represented by the general formula VI;
(7)0 to 6% of a compound represented by the general formula VII;
(8)0 to 5% of a compound represented by the general formula VIII.
As a preferable scheme of the invention, the liquid crystal composition comprises the following components in percentage by weight: the liquid crystal composition comprises the following components in percentage by weight:
(1) 9-10% of a compound represented by general formula I;
(2) 57-60% of a compound represented by general formula II;
(3) 3-6% of a compound represented by the general formula III;
(4)19 to 27% of a compound represented by formula IV;
(5) 3-5% of a compound represented by general formula IX;
or, the liquid crystal composition comprises the following components in percentage by weight:
(1) 4-17% of a compound represented by general formula I;
(2) 48-60% of a compound represented by general formula II;
(3) 3-10% of a compound represented by the general formula III;
(4) 10-27% of a compound represented by formula IV;
(5)0 to 5% of a compound represented by the general formula V;
(6)0 to 4% of a compound represented by the general formula VI;
(7)0 to 7% of a compound represented by the general formula VII;
(8)0 to 5% of a compound represented by the general formula VIII;
(9) 3-20% of a compound represented by formula IX;
or, the liquid crystal composition comprises the following components in percentage by weight:
(1) 4-17% of a compound represented by general formula I;
(2) 48-59% of a compound represented by the general formula II;
(3) 2-10% of a compound represented by the general formula III;
(4) 10-15% of a compound represented by formula IV;
(5)0 to 5% of a compound represented by the general formula V;
(6)0 to 5% of a compound represented by the general formula VI;
(7)0 to 7% of a compound represented by the general formula VII;
(8) 4-5% of a compound represented by general formula VIII;
(9)0 to 20% of a compound represented by the general formula IX;
or, the liquid crystal composition comprises the following components in percentage by weight:
(1) 4-17% of a compound represented by general formula I;
(2) 48-51% of a compound represented by general formula II;
(3) 4-10% of a compound represented by the general formula III;
(4) 10-14% of a compound represented by formula IV;
(5)0 to 4% of a compound represented by the general formula VI;
(6)0 to 7% of a compound represented by the general formula VII;
(7) 4-5% of a compound represented by general formula VIII;
(8) 9-20% of a compound represented by formula IX.
The compound represented by the general formula I in the liquid crystal composition provided by the invention is a polyfluoro-substituted terphenyl structure compound, the compound has large dielectric anisotropy and optical anisotropy, and is very effective for improving the dielectric anisotropy and the optical anisotropy of the liquid crystal composition; the structure represented by the general formula IV is a tricyclic neutral liquid crystal compound which has a high clearing point and a large elastic constant and is very effective in improving the clearing point and the elastic constant of the liquid crystal composition.
The method for producing the liquid crystal composition of the present invention is not particularly limited, and it can be produced by mixing two or more compounds by a conventional method, such as a method of mixing the different components at a high temperature and dissolving each other, wherein the liquid crystal composition is dissolved and mixed in a solvent for the compounds, and then the solvent is distilled off under reduced pressure; alternatively, the liquid crystal composition of the present invention can be prepared by a conventional method, for example, by dissolving the component having a smaller content in the main component having a larger content at a higher temperature, or by dissolving each of the components in an organic solvent, for example, acetone, chloroform or methanol, and then mixing the solutions to remove the solvent.
The liquid crystal composition has low rotational viscosity, large elastic constant, good low-temperature intersolubility and high response speed, can be used for fast response liquid crystal display of various display modes, can obviously improve the display effect of a liquid crystal display when being used in a TN, IPS or FFS mode display, and is particularly suitable for IPS and FFS mode liquid crystal displays.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Unless otherwise indicated, percentages in the present invention are weight percentages; the temperature units are centigrade; Δ n represents optical anisotropy (25 ℃); Δ ε represents the dielectric anisotropy (25 ℃, 1000 Hz); γ 1 represents rotational viscosity (mpa.s, 25 ℃); cp represents the clearing point (. degree. C.) of the liquid crystal composition; k11、K22、K33Respectively representing the splay, twist and bend elastic constants (pN, 25 ℃).
In the following examples, the group structures in the liquid crystal compounds are represented by codes shown in Table 1.
Table 1: radical structure code of liquid crystal compound
Take the following compound structure as an example:
In the following examples, the liquid crystal composition was prepared by a thermal dissolution method, comprising the steps of: weighing the liquid crystal compound by a balance according to the weight percentage, wherein the weighing and adding sequence has no specific requirements, generally weighing and mixing the liquid crystal compound in sequence from high melting point to low melting point, heating and stirring at 60-100 ℃ to uniformly melt all the components, filtering, performing rotary evaporation, and finally packaging to obtain the target sample.
In the following examples, the weight percentages of the components in the liquid crystal composition and the performance parameters of the liquid crystal composition are shown in the following tables.
Example 1
Table 2: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 2
Table 3: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 3
Table 4: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 4
Table 5: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 5
Table 6: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 6
Table 7: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 7
Table 8: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 8
Table 9: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 9
Table 10: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 10
Table 11: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 11
Table 12: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 12
Table 13: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 13
Table 14: the weight percentage and performance parameters of each component in the liquid crystal composition
Comparative example 1
Table 15: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 1 has a lower rotational viscosity and a larger elastic constant, and a faster response time than comparative example 1; on the other hand, the large elastic constant can improve the afterimage recovery speed of the liquid crystal display and improve the afterimage performance of the liquid crystal display.
From the above embodiments, the liquid crystal composition provided by the present invention has low rotational viscosity, high resistivity, suitable optical anisotropy, good low-temperature intersolubility, large elastic constant, and excellent light stability and thermal stability, and can reduce the response time of the liquid crystal display, thereby solving the problem of slow response speed of the liquid crystal display. Therefore, the liquid crystal composition provided by the invention is suitable for TN, IPS and FFS type TFT liquid crystal display devices with fast response, and is particularly suitable for IPS and FFS liquid crystal display devices.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (4)
1. A fast response liquid crystal composition is characterized by comprising the following components in percentage by weight:
2. a fast response liquid crystal composition is characterized by comprising the following components in percentage by weight:
3. use of a liquid crystal composition according to claim 1 or 2 in a fast response liquid crystal display.
4. Use of a liquid crystal composition according to claim 1 or 2 in a display of TN, IPS or FFS mode.
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| CN113072958A (en) * | 2020-01-03 | 2021-07-06 | 北京八亿时空液晶科技股份有限公司 | Negative liquid crystal composition with high contrast and application thereof |
| CN114437735B (en) * | 2020-11-02 | 2023-05-12 | 北京八亿时空液晶科技股份有限公司 | Liquid crystal composition containing pyran and terphenyl and application thereof |
| CN115612504A (en) * | 2022-09-30 | 2023-01-17 | 重庆汉朗精工科技有限公司 | Positive variable frequency display liquid crystal material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0728829A2 (en) * | 1995-02-23 | 1996-08-28 | Chisso Corporation | Liquid crystalline alkenylcyclohexene derivative, liquid crystal composition and liquid crystal display element |
| CN101475811A (en) * | 2007-04-13 | 2009-07-08 | 默克专利股份有限公司 | Liquid crystal medium |
| CN102666786A (en) * | 2009-11-17 | 2012-09-12 | 捷恩智株式会社 | Liquid crystal composition and liquid crystal display element |
| CN104610978A (en) * | 2015-02-09 | 2015-05-13 | 石家庄诚志永华显示材料有限公司 | Liquid crystal compounds and liquid crystal medium containing same |
| CN106554783A (en) * | 2015-09-25 | 2017-04-05 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition with high permeability and its application |
| CN106661454A (en) * | 2014-06-23 | 2017-05-10 | 东进世美肯株式会社 | Liquid crystal composition having easily adjustable rotational viscosity |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19919348B4 (en) * | 1998-04-30 | 2009-11-05 | Merck Patent Gmbh | Liquid crystalline medium |
| DE102004058002B4 (en) * | 2003-12-17 | 2014-01-09 | Merck Patent Gmbh | Liquid-crystalline medium and its use |
| KR101517385B1 (en) * | 2008-10-29 | 2015-05-06 | 삼성디스플레이 주식회사 | liquid crystal display |
| CN104087313B (en) * | 2014-07-01 | 2015-11-04 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition and application thereof |
| CN104610983B (en) * | 2015-01-21 | 2017-01-11 | 北京八亿时空液晶科技股份有限公司 | Liquid crystal composition containing 2-methyl-3,4,5-trifluorobenzene liquid crystal compound and application of liquid crystal composition |
| CN106544040B (en) * | 2015-09-18 | 2019-11-08 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition and its application with high reliability |
-
2017
- 2017-10-27 CN CN201711026953.5A patent/CN109722256B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0728829A2 (en) * | 1995-02-23 | 1996-08-28 | Chisso Corporation | Liquid crystalline alkenylcyclohexene derivative, liquid crystal composition and liquid crystal display element |
| CN101475811A (en) * | 2007-04-13 | 2009-07-08 | 默克专利股份有限公司 | Liquid crystal medium |
| CN102666786A (en) * | 2009-11-17 | 2012-09-12 | 捷恩智株式会社 | Liquid crystal composition and liquid crystal display element |
| CN106661454A (en) * | 2014-06-23 | 2017-05-10 | 东进世美肯株式会社 | Liquid crystal composition having easily adjustable rotational viscosity |
| CN104610978A (en) * | 2015-02-09 | 2015-05-13 | 石家庄诚志永华显示材料有限公司 | Liquid crystal compounds and liquid crystal medium containing same |
| CN106554783A (en) * | 2015-09-25 | 2017-04-05 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition with high permeability and its application |
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