Liquid crystal composition and application thereof

Abstract

The invention provides a liquid crystal composition and application thereof, and belongs to the technical field of liquid crystal materials. The liquid crystal composition comprises at least one compound represented by a general formula I, at least one compound represented by a general formula II, at least one compound represented by a general formula III, at least one compound represented by a general formula IV and at least one compound represented by a general formula V. The liquid crystal composition provided by the invention has the advantages of low rotary viscosity, large elastic constant, small optical dispersion, good low-temperature intersolubility, relatively high transmittance and high response speed, can be used for fast-response liquid crystal display of multiple display modes, improves the transmittance and contrast ratio, and is especially suitable for IPS and FFS mode liquid crystal displays.

Description

Technical Field

[0001] The present invention belongs to the technical field of liquid crystal materials, and particularly relates to a liquid crystal composition and its application. Background Art

[0002] At present, the LCD product technology has been mature, successfully solving technical problems such as viewing angle, resolution, color saturation, and brightness, and its display performance has approached or exceeded that of CRT displays. Large-size and small-and-medium-size LCDs have gradually occupied the mainstream position of flat panel displays in their respective fields.

[0003] With the improvement of consumers' requirements for displays, high-resolution panels have become the development direction of liquid crystal panels. However, as the panel resolution increases, the aperture ratio of the liquid crystal panel decreases, resulting in a sharp drop in brightness. To increase brightness, it is necessary to enhance the backlight brightness, and thus more electric energy is required to improve the backlight brightness. This greatly increases the energy consumption of the backlight and reduces the backlight life. Therefore, improving the transmittance of liquid crystal panels has become a difficult point in current liquid crystal displays.

[0004] Specifically, the transmittance of a liquid crystal display can be described by the following expression:

[0005]

[0006] In the formula, χ is the angle between the optical axis of the polarizer and the plane where the liquid crystal lies down, and λ is the light wavelength.

[0007] Generally speaking, the way to increase transmittance is to increase the refractive index of the liquid crystal, thereby increasing the retardation amount to improve the transmittance. However, since the transmittance of light with different wavelengths passing through the liquid crystal material is different, the smaller the refractive index dispersion of the liquid crystal material, the higher the transmittance. Therefore, reducing the dispersion of the liquid crystal material is one of the effective ways to improve the transmittance of liquid crystal display panels. Summary of the Invention

[0008] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a liquid crystal composition and its application. The liquid crystal composition has a small dispersion and a high transmittance.

[0009] To achieve this purpose, the present invention adopts the following technical solutions:

[0010] In the first aspect, the present invention provides a liquid crystal composition, comprising at least one compound represented by general formula I, at least one compound represented by general formula II, at least one compound represented by general formula III, at least one compound represented by general formula IV, and at least one compound represented by general formula V;

[0011]

[0012]

[0013] In the general formula I, R1 and R2 each independently represent an alkyl group having 1 to 7 carbon atoms (for example, it can be 1, 2, 3, 4, 5, 6, or 7 carbon atoms), an alkoxy group having 1 to 7 carbon atoms (for example, it can be 1, 2, 3, 4, 5, 6, or 7 carbon atoms), or an alkenyl group having 2 to 7 carbon atoms (for example, it can be 2, 3, 4, 5, 6, or 7 carbon atoms);

[0014] In the general formula II, R3 and R4 each independently represent an alkyl group having 1 to 7 carbon atoms (for example, it can be 1, 2, 3, 4, 5, 6, or 7 carbon atoms) or an alkenyl group having 2 to 7 carbon atoms (for example, it can be 2, 3, 4, 5, 6, or 7 carbon atoms);

[0015] In the general formula III, R5 and R6 each independently represent an alkyl group having 1 to 7 carbon atoms (for example, it can be 1, 2, 3, 4, 5, 6, or 7 carbon atoms), an alkoxy group having 1 to 7 carbon atoms (for example, it can be 1, 2, 3, 4, 5, 6, or 7 carbon atoms), or an alkenyl group having 2 to 7 carbon atoms (for example, it can be 2, 3, 4, 5, 6, or 7 carbon atoms), represent

[0016] In the general formula IV, R7 represents an alkyl group having 1 to 7 carbon atoms (for example, it can be 1, 2, 3, 4, 5, 6, or 7 carbon atoms) or an alkenyl group having 2 to 7 carbon atoms (for example, it can be 2, 3, 4, 5, 6, or 7 carbon atoms), and R8 represents an alkyl group having 1 to 7 carbon atoms (for example, it can be 1, 2, 3, 4, 5, 6, or 7 carbon atoms), an alkoxy group having 1 to 7 carbon atoms (for example, it can be 1, 2, 3, 4, 5, 6, or 7 carbon atoms), or an alkenyloxy group having 2 to 7 carbon atoms (for example, it can be 2, 3, 4, 5, 6, or 7 carbon atoms), represent

[0017] In the general formula V, R9 represents an alkyl group having 1 to 7 carbon atoms or an alkenyl group having 2 to 7 carbon atoms, and R 10 represents an alkyl group having 1 to 7 carbon atoms (for example, it can be 1, 2, 3, 4, 5, 6, or 7 carbon atoms), an alkoxy group having 1 to 7 carbon atoms (for example, it can be 1, 2, 3, 4, 5, 6, or 7 carbon atoms), or an alkenyloxy group having 2 to 7 carbon atoms (for example, it can be 2, 3, 4, 5, 6, or 7 carbon atoms), represent

[0018] Among them, -* represents the bonding key of the group.

[0019] In the liquid crystal composition provided by the present invention, the compound represented by General Formula I is a compound containing diacetylenic groups, and this type of compound has a large n o and a small n e , and its refractive index (Δn = n e -n o ) is negative; the compound represented by General Formula II is a dicyclohexane compound, and this compound has good low-temperature solubility and low rotational viscosity; the compound represented by General Formula III is a tricyclic neutral compound, and this compound has a high clearing point and good low-temperature solubility, and can effectively improve the clearing point of the liquid crystal composition; the compound represented by General Formula IV is a bicyclic negative compound, and this compound has good low-temperature solubility and negative dielectric anisotropy; the compound represented by General Formula V is a tricyclic negative compound, and this compound has a high clearing point and negative dielectric anisotropy. Through the synergistic cooperation of the above components, the obtained liquid crystal composition has low rotational viscosity, large elastic constant, small optical dispersion, good low-temperature miscibility, high transmittance, and fast response speed.

[0020] In some embodiments of the present invention, in General Formula I, R1 and R2 each independently represent an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms, or one of R1 and R2 represents an alkyl group having 1 to 5 carbon atoms, and the other represents a monoalkenyl group having 2 to 5 carbon atoms.

[0021] In some embodiments of the present invention, the compound represented by General Formula I includes one or more of the compounds represented by Formulae IA1 - IA15, IB1 - IB20, and IC1 - IC15;

[0022]

[0023]

[0024]

[0025]

[0026] In some embodiments of the present invention, in General Formula II, R3 and R4 each independently represent an alkyl group having 1 to 5 carbon atoms or a monoalkenyl group having 2 to 5 carbon atoms.

[0027] In some embodiments of the present invention, the compound represented by General Formula II includes one or more of the compounds represented by Formulae IIA1 - IIA12, IIB1 - IIB14, and IIC1 - IIC4;

[0028]

[0029]

[0030] In some embodiments of the present invention, in the general formula III, R5 represents an alkyl group having 1 to 5 carbon atoms or a monoalkenyl group having 2 to 5 carbon atoms, and R6 represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms.

[0031] In some embodiments of the present invention, the compound represented by the general formula I includes one or more of the compounds represented by formulae IIIA1 - IIIA48, formulae IIIB1 - IIIB48, and formulae IIIC1 - IIIC48;

[0032]

[0033]

[0034]

[0035]

[0036]

[0037] In some embodiments of the present invention, in the general formula IV, R7 represents an alkyl group having 1 to 5 carbon atoms or a monoalkenyl group having 2 to 5 carbon atoms, and R8 represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms.

[0038] In some embodiments of the present invention, the compound represented by the general formula IV includes one or more of the compounds represented by formulae IVA1 - IVA48, formulae IVB1 - IVB24, and formulae IVC1 - IVC24;

[0039]

[0040]

[0041]

[0042]

[0043] In some embodiments of the present invention, in the general formula V, R9 represents an alkyl group having 1 to 5 carbon atoms or a monoalkenyl group having 2 to 5 carbon atoms, and R 10 represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms.

[0044] In some embodiments of the present invention, the compounds represented by the general formula V include one or more of the compounds represented by formulae VA1-VA48, formulae VB1-VB48 and formulae VC1-VC48;

[0045]

[0046]

[0047]

[0048]

[0049]

[0050] In the present invention, unless otherwise specified, "-C n H 2n+1 " represents a straight-chain alkyl group (e.g., -C3H7, -C4H9, -C5H 11 ).

[0051] In some embodiments of the present invention, the liquid crystal composition comprises the following components in mass percentages:

[0052] 1-30% of the compound represented by the general formula I, for example, it can be 1%, 2%, 3%, 5%, 6%, 8%, 10%, 12%, 13%, 15%, 16%, 18%, 20%, 22%, 23%, 25%, 26%, 28% or 30%, etc.;

[0053] 1-30% of the compound represented by the general formula II, for example, it can be 1%, 2%, 3%, 5%, 6%, 8%, 10%, 12%, 13%, 15%, 16%, 18%, 20%, 22%, 23%, 25%, 26%, 28% or 30%, etc.;

[0054] 1-30% of the compound represented by the general formula III, for example, it can be 1%, 2%, 3%, 5%, 6%, 8%, 10%, 12%, 13%, 15%, 16%, 18%, 20%, 22%, 23%, 25%, 26%, 28% or 30%, etc.;

[0055] 1-40% of the compound represented by the general formula IV, for example, it can be 1%, 2%, 3%, 5%, 6%, 8%, 10%, 12%, 13%, 15%, 16%, 18%, 20%, 22%, 23%, 25%, 26%, 28%, 30%, 32%, 33%, 35%, 36%, 38% or 40%, etc.;

[0056] 1 to 50% of the compound represented by general formula V, for example, can be 1%, 2%, 3%, 5%, 6%, 8%, 10%, 12%, 13%, 15%, 16%, 18%, 20%, 22%, 23%, 25%, 26%, 28%, 30%, 32%, 33%, 35%, 36%, 38%, 40%, 42%, 43%, 45%, 46%, 48% or 50%, etc.

[0057] In some embodiments of the present invention, the liquid crystal composition comprises the following components in mass percentages:

[0058] 5 to 30% of the compound represented by general formula I;

[0059] 5 to 30% of the compound represented by general formula II;

[0060] 5 to 30% of the compound represented by general formula III;

[0061] 5 to 40% of the compound represented by general formula IV;

[0062] 5 to 50% of the compound represented by general formula V.

[0063] In some embodiments of the present invention, the liquid crystal composition comprises the following components in mass percentages:

[0064] 5 to 25% of the compound represented by general formula I;

[0065] 5 to 25% of the compound represented by general formula II;

[0066] 5 to 20% of the compound represented by general formula III;

[0067] 10 to 35% of the compound represented by general formula IV;

[0068] 20 to 50% of the compound represented by general formula V.

[0069] In some embodiments of the present invention, the liquid crystal composition comprises the following components in mass percentages:

[0070] 10 to 20% of the compound represented by general formula I;

[0071] 10 to 20% of the compound represented by general formula II;

[0072] 5 to 15% of the compound represented by general formula III;

[0073] 15 to 30% of the compound represented by general formula IV;

[0074] 30 to 40% of the compound represented by general formula V.

[0075] In a second aspect, the present invention provides an application of the liquid crystal composition as described in the first aspect, wherein the liquid crystal composition is used in a liquid crystal display, preferably for a VA (Vertical Alignment), IPS (In-Plane Switching) or FFS (Fringe Field Switching) mode display, more preferably for an IPS or FFS mode liquid crystal display.

[0076] The present invention places no special restrictions on the preparation method of the liquid crystal composition, and conventional methods can be used to mix two or more compounds for preparation. For example, it can be prepared by mixing different components at a high temperature and dissolving them in each other; alternatively, the component with a smaller content can be dissolved in the main component with a larger content at a higher temperature; or, each component can be dissolved in an organic solvent (such as acetone, chloroform or methanol, etc.), and then the solutions are mixed and the solvent is removed.

[0077] Compared with the prior art, the present invention has the following beneficial effects:

[0078] The liquid crystal composition provided by the present invention has low rotational viscosity, large elastic constants, small optical dispersion, good low-temperature miscibility, high transmittance and fast response speed, and can be used for fast-response liquid crystal displays in various display modes. It can significantly improve the display effect of liquid crystal displays in VA, IPS or FFS mode displays, increase the transmittance and contrast ratio, and is particularly suitable for IPS and FFS mode liquid crystal displays. Description of the Drawings

[0079] Figure 1 It is a VT curve graph of the liquid crystal compositions provided in Example 1, Example 10 and Comparative Example 1 of the present invention. Detailed Embodiments

[0080] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0081] In the embodiments of the present invention, the performance of the liquid crystal compound is tested by the following methods:

[0082] △n: represents the optical anisotropy (25 °C), and is measured using an Abbe refractometer;

[0083] △ε: represents the dielectric anisotropy (25 °C, 1000 Hz), and is measured using an INSTEC liquid crystal detection instrument;

[0084] γ1: represents the rotational viscosity (mPa·s, 25 °C), and is measured using a viscometer;

[0085] K 11 and K 33 respectively represent the flexural and bending elastic constants (pN, 25 °C), and are measured using an INSTEC liquid crystal detection instrument.

[0086] In the embodiments of the present invention, the liquid crystal compositions are all prepared by a thermal dissolution method, including the following steps: weighing liquid crystal compounds by weight percentage using a balance, where there is no specific requirement for the weighing and addition order, and usually weighing and mixing them in the order of decreasing melting point of the liquid crystal compounds, heating and stirring at 60 - 100 °C to make the components mix evenly, then filtering, and finally encapsulating to obtain the target sample.

[0087] Example 1

[0088] This example provides a liquid crystal composition, and its composition and properties are as follows.

[0089]

[0090] Example 2

[0091] This example provides a liquid crystal composition, and its composition and properties are as follows.

[0092]

[0093]

[0094] Example 3

[0095] This example provides a liquid crystal composition, and its composition and properties are as follows.

[0096]

[0097] Example 4

[0098] This example provides a liquid crystal composition, and its composition and properties are as follows.

[0099]

[0100]

[0101] Example 5

[0102] This example provides a liquid crystal composition, and its composition and properties are as follows.

[0103]

[0104] Example 6

[0105] This example provides a liquid crystal composition, and its composition and properties are as follows.

[0106]

[0107]

[0108] Example 7

[0109] This example provides a liquid crystal composition, and its composition and properties are as follows.

[0110]

[0111] Example 8

[0112] This example provides a liquid crystal composition, and its composition and properties are as follows.

[0113]

[0114]

[0115] Example 9

[0116] This example provides a liquid crystal composition, and its composition and properties are as follows.

[0117]

[0118] Example 10

[0119] This example provides a liquid crystal composition, and its composition and properties are as follows.

[0120]

[0121] Example 11

[0122] This example provides a liquid crystal composition, and its composition and properties are as follows.

[0123]

[0124]

[0125] Example 12

[0126] This example provides a liquid crystal composition, and its composition and properties are as follows.

[0127]

[0128] Example 13

[0129] This example provides a liquid crystal composition, and its composition and properties are as follows.

[0130]

[0131]

[0132] Comparative Example 1

[0133] This comparative example provides a liquid crystal composition, and its composition and properties are as follows.

[0134]

[0135] Comparative Example 2

[0136] This comparative example provides a liquid crystal composition, which is different from Example 1 only in that it does not contain the compound represented by General Formula I (the mass ratio between other components remains unchanged).

[0137] Comparative Example 3

[0138] This comparative example provides a liquid crystal composition, which is different from Example 1 only in that it does not contain the compound represented by General Formula II (the mass ratio between other components remains unchanged).

[0139] Comparative Example 4

[0140] This comparative example provides a liquid crystal composition, which is different from Example 1 only in that it does not contain the compound represented by General Formula III (the mass ratio between other components remains unchanged).

[0141] Comparative Example 5

[0142] This comparative example provides a liquid crystal composition, which is different from Example 1 only in that it does not contain the compound represented by General Formula IV (the mass ratio between other components remains unchanged).

[0143] Comparative Example 6

[0144] This comparative example provides a liquid crystal composition, which is different from Example 1 only in that it does not contain the compound represented by General Formula V (the mass ratio between other components remains unchanged).

[0145] The optical anisotropy values of the liquid crystal compositions obtained in Example 1, Example 10 and Comparative Example 1 were statistically compared, as shown in Table 1.

[0146] Table 1

[0147]

[0148] As can be seen from Table 1, compared with Comparative Example 1, under the condition of the same △n(589), the liquid crystal compositions of Example 1 and Example 10 have significantly smaller refractive indices at short wavelengths and significantly larger refractive indices at long wavelengths, so the liquid crystal compositions of Example 1 and Example 10 have smaller optical dispersion.

[0149] The simulation experiment was carried out using Techwiz optical simulation software. The liquid crystal compositions obtained in Example 1, Example 10 and Comparative Example 1 were optically simulated and compared to make a VT curve (as Figure 1 shown), and the maximum transmittance (T max value) was obtained, and then the transmittance was calculated. Taking the transmittance of Comparative Example 1 as 100%, the transmittance percentage of the examples was obtained. The results are shown in Table 2.

[0150] Table 2

[0151] Performance parameter Comparative example 1 Example 1 Example 10 <![CDATA[T max > 0.3222 0.3337 0.3341 T％ 100％ 103.57％ 103.72％

[0152] From Figure 1 and Table 2, it can be seen that compared with Comparative Example 1, the transmittance of the liquid crystal compositions of Example 1 and Example 10 increased by more than 3.5%. This indicates that when making liquid crystal displays under the same technical conditions, the liquid crystal composition provided by the present invention has a higher transmittance, can significantly reduce the brightness of the backlight, and thus achieves the effect of energy saving.

[0153] The performance of the liquid crystal compositions provided by Comparative Examples 2-6 is shown in Table 3.

[0154] Table 3

[0155] Performance parameter Example 1 Comparative example 2 Comparative example 3 Comparative example 4 Comparative example 5 Comparative example 6 △ε -3.77 -3.98 / -3.89 -2.12 -1.82 γ1 93.7 103.5 / 90.1 123.2 86.2 K11 14.38 13.22 / 12.54 15.23 13.35 K33 15.22 13.62 / 13.21 17.45 14.69 △n(480) 0.1038 0.1088 / 0.1044 0.1057 0.1029 △n(546) 0.1013 0.1051 / 0.1004 0.1023 0.0992 △n(589) 0.1001 0.1031 / 0.0987 0.1005 0.0972 △n(656) 0.0989 0.1013 / 0.0971 0.0984 0.0957

[0156] From Table 3, it can be seen that compared with Example 1, Comparative Examples 2-6 lack the compounds represented by General Formula I, General Formula II, General Formula III, General Formula IV, and General Formula V respectively to obtain the liquid crystal compositions of Comparative Examples 2-6: The rotational viscosity (γ1) of Comparative Example 2 is significantly larger than that of Example 1, and its response time is slower; the liquid crystal composition obtained in Comparative Example 3 is in a solid state at room temperature and cannot be applied; the refractive index of Comparative Example 4 is significantly smaller than that of Example 1, and the liquid crystal dispersion is larger, and its transmittance is lower; the dielectric constants of Comparative Examples 5 and 6 are significantly smaller than that of Example 1, and their driving voltages are larger and the power consumption is higher; it shows that there is a synergistic cooperation relationship among the five components in the liquid crystal composition of the present invention. The lack of any one of them will make it difficult for the performance of the liquid crystal composition to meet the requirements of this application.

[0157] The above are only specific embodiments of the present disclosure, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liquid crystal composition, characterized in that, comprising at least one compound represented by general formula I, at least one compound represented by general formula II, at least one compound represented by general formula III, at least one compound represented by general formula IV, and at least one compound represented by general formula V; In the general formula I, R1 and R2 each independently represent 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; In the general formula II, R3 and R4 each independently represent an alkyl group having 1 to 7 carbon atoms or an alkenyl group having 2 to 7 carbon atoms; In the general formula III, R5 and R6 each independently represent 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, represent In the general formula IV, R7 represents an alkyl group having 1 to 7 carbon atoms or an alkenyl group having 2 to 7 carbon atoms, and R8 represents an alkyl group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms or an alkenyloxy group having 2 to 7 carbon atoms. represents In the general formula V, R9 represents an alkyl group having 1 to 7 carbon atoms or an alkenyl group having 2 to 7 carbon atoms, and R 10 represents an alkyl group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms, or an alkenyloxy group having 2 to 7 carbon atoms, represents wherein -* represents the bonding site of the group.

2. The liquid crystal composition according to claim 1, characterized in that, In the general formula I, R1 and R2 each independently represent an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms, or one of R1 and R2 represents an alkyl group having 1 to 5 carbon atoms and the other represents a monoalkenyl group having 2 to 5 carbon atoms; Preferably, the compound represented by the general formula I includes one or more of the compounds represented by formulae IA1 - IA15, formulae IB1 - IB20, and formulae IC1 - IC15; 3. The liquid crystal composition according to claim 1 or 2, characterized in that, In the general formula II, R3 and R4 each independently represent an alkyl group having 1 to 5 carbon atoms or a monoalkenyl group having 2 to 5 carbon atoms; Preferably, the compound represented by the general formula II includes one or more of the compounds represented by formulae IIA1 - IIA12, formulae IIB1 - IIB14, and formulae IIC1 - IIC4; 4. The liquid crystal composition according to any one of claims 1 to 3, characterized in that, In the general formula III, R5 represents an alkyl group having 1 to 5 carbon atoms or a monoalkenyl group having 2 to 5 carbon atoms, and R6 represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms; Preferably, the compound represented by the general formula I includes one or more of the compounds represented by formulae IIIA1 - IIIA48, formulae IIIB1 - IIIB48, and formulae IIIC1 - IIIC48; 5. The liquid crystal composition according to any one of claims 1-4, characterized in that, In the general formula IV, R7 represents an alkyl group having 1 to 5 carbon atoms or a monoalkenyl group having 2 to 5 carbon atoms, and R8 represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms; Preferably, the compound represented by the general formula IV includes one or more of the compounds represented by formulae IVA1 - IVA48, formulae IVB1 - IVB24, and formulae IVC1 - IVC24; 6. The liquid crystal composition according to any one of claims 1-5, characterized in that, In the general formula V, R9 represents an alkyl group having 1 to 5 carbon atoms or a monoalkenyl group having 2 to 5 carbon atoms, and R 10 represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms; Preferably, the compound represented by the general formula V includes one or more of the compounds represented by formulae VA1 - VA48, formulae VB1 - VB48, and formulae VC1 - VC48; 7. The liquid crystal composition according to any one of claims 1-6, characterized in that The liquid crystal composition comprises the following components in mass percentages: The compound represented by general formula I: 1 - 30%; The compound represented by general formula II: 1 - 30%; The compound represented by general formula III: 1 - 30%; The compound represented by general formula IV: 1 - 40%; The compound represented by general formula V: 1 - 50%.

8. The liquid crystal composition according to claim 7, characterized in that, The liquid crystal composition comprises the following components in mass percentages: The compound represented by general formula I: 5 - 30%; The compound represented by general formula II: 5 - 30%; The compound represented by general formula III: 5 - 30%; The compound represented by general formula IV: 5 - 40%; The compound represented by general formula V: 5 - 50%.

9. The liquid crystal composition according to claim 8, wherein The liquid crystal composition comprises components in the following mass percentages: 5-25% of the compound represented by General Formula I; 5-25% of the compound represented by General Formula II; 5-20% of the compound represented by General Formula III; 10-35% of the compound represented by General Formula IV; 20-50% of the compound represented by General Formula V; Preferably, the liquid crystal composition comprises components in the following mass percentages: 10-20% of the compound represented by General Formula I; 10-20% of the compound represented by General Formula II; 5-15% of the compound represented by General Formula III; 15-30% of the compound represented by General Formula IV; 30-40% of the compound represented by General Formula V.

10. Use of a liquid crystal composition according to any one of claims 1-9, characterized in that, The liquid crystal composition is used in a liquid crystal display, preferably in a VA, IPS or FFS mode display.

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