Low-threshold liquid crystal composition

Abstract

The invention relates to the technical field of liquid crystal materials, and particularly discloses a low-threshold liquid crystal composition. The low-threshold liquid crystal composition comprises 2%-15% of a first component shown in a formula (I), 1%-15% of a second component shown in a formula (II), 2%-50% of a third component shown in a formula (III), 0-38% of a fourth component shown in a formula (IV), 0-30% of a fifth component shown in a formula (V), 0-30% of a sixth component shown in a formula (VI), 0-20% of a seventh component shown in formulas (VIII) a and (VIII) b and 0-20% of an eighth component shown in formulas (VIII) a and (VIII) b, 0-20% of a ninth component shown in the formulas (IX a and IX b) and 0-30% of a tenth component shown in the formulas (Xa and Xb). The liquid crystal composition has the advantages of strong anti-UV capability, good high and low temperature stability, low threshold value of about 1.0 V, good anti-pollution capability and wide working temperature range, and can fully meet the performance requirements of VA-LCD with low threshold value and low power consumption.

Description

Technical Field

[0001] This invention relates to the field of liquid crystal materials technology, and in particular to a low threshold liquid crystal composition. Background Technology

[0002] Liquid crystal display (LCD) technology, with its advantages of being thin, light, energy-efficient, and offering high image quality, has been widely adopted in consumer electronics such as televisions, movies, and games. It also holds an irreplaceable position in specialized fields such as medical diagnostic equipment, military display systems, aerospace instruments, and geological engineering exploration equipment. As a core component of LCD technology, the performance of liquid crystal materials directly determines the overall quality of display devices. Among them, negative liquid crystals, exhibiting significant advantages in key performance indicators such as response speed, display brightness, and viewing angle, have become one of the key areas of current LCD material research and application. Furthermore, their application potential in emerging technology fields such as visible light communication, photolithography, and holographic displays is also attracting considerable attention.

[0003] Among various display methods, VA (Vertical Alignment) display technology has become one of the mainstream display technologies due to its high contrast and wide viewing angle. For liquid crystal materials used in VA displays, the market and practical applications have imposed clear and stringent performance requirements, including low-voltage driving capability, low power consumption, excellent UV resistance, a wide operating temperature range, and stable low-temperature performance. These performance indicators are interrelated and mutually restrictive, jointly determining the reliability and user experience of VA display devices in different environments. For example, in extremely low-temperature outdoor environments or high-temperature industrial scenarios, the temperature adaptability of the liquid crystal material directly affects the normal operation of the display device.

[0004] However, the liquid crystal material field currently faces a core technological bottleneck: no single compound can simultaneously meet the comprehensive performance requirements of VA-type displays. To address this issue, the industry commonly employs a technique of compounding multiple liquid crystal monomers to form hybrid liquid crystal compositions, optimizing overall performance through the complementary properties of different monomers. However, existing VA-LCD liquid crystal compositions often suffer from performance imbalances. While some compositions can control the threshold voltage at a low level, they struggle to meet the requirements of a wide operating temperature range, resulting in a typically narrow effective operating range that cannot adapt to extreme environments. Furthermore, there are significant limitations in achieving lower voltage driving, which severely restricts their application in high-end displays and special environments.

[0005] Therefore, developing a hybrid liquid crystal material with a wide temperature adaptability range while maintaining low threshold voltage and low power consumption has become an urgent technical problem to be solved in the current field of liquid crystal materials, and is of great significance for promoting the upgrading and iteration of VA type display technology. Summary of the Invention

[0006] To address the problem that liquid crystal compositions often suffer from difficulty in simultaneously achieving both a low threshold and a wide temperature adaptability range, this invention provides a low threshold liquid crystal composition.

[0007] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows:

[0008] This invention provides a low threshold liquid crystal composition, comprising:

[0009] A first component consisting of one or more compounds of general formula (I);

[0010] A second component consisting of one or more compounds of general formula (II);

[0011] A third component consisting of one or more compounds of general formula (Ⅲ);

[0012]

[0013]

[0014] Among them, R1, R'1, R2, R'2, R3, and R'3 are each independently selected from straight-chain alkyl or alkoxy groups;

[0015] m1 and m2 are either 0 or 1.

[0016] Compared with the prior art, the liquid crystal composition provided by the present invention has a large dielectric anisotropy of the first component and the second component, and a relatively small refractive index anisotropy (Δn). It also has a high melting point and a high clearing point, which plays an important role in adjusting the clearing point and dielectric anisotropy, and has a significant impact on the overall clearing point and driving voltage control of the liquid crystal composition.

[0017] As a specific embodiment of the present invention, the preparation method of the first component includes the following steps:

[0018] 1. Preparation of the compound shown in Formula 1:

[0019] Step 1: Compound A-1, compound A-2, dichlorodi-tert-butyl-(4-dimethylaminophenyl)phosphine palladium(II) and potassium carbonate are added to a mixed solvent of water, ethanol and toluene, and the mixture is subjected to a Suzuki coupling reaction at 70-80°C to obtain compound B-1.

[0020] Step 2: Dissolve the compound shown in B-1 in toluene, then add sodium acetate and hydroxylamine hydrochloride, and carry out an addition reaction at 40-50°C. Cool the reaction system to 0-10°C, add thionyl chloride, and carry out a dehydration reaction at 50-60°C to obtain the compound shown in C-1.

[0021] Step 3: Dissolve the compound shown in C-1 in tetrahydrofuran, cool it to -80 to -70°C, add diisopropylaminolithium for the first heat preservation, add triisobutyl borate for the second heat preservation, and hydrolyze to obtain the compound shown in D-1.

[0022] Step 4: Add hydrogen peroxide solution to the compound shown in D-1 and carry out an oxidation reaction at 30-40°C to obtain the compound shown in Formula 1. The specific reaction route is shown below:

[0023]

[0024] 2. Preparation of the compound shown in Formula 2:

[0025] Step a: Dissolve the compound shown in F-1 in tetrahydrofuran, cool to -90 to -70°C, then add diisopropylaminolithium to carry out a dehydrogenation reaction, then add N,N-dimethylformamide to carry out an addition reaction, heat to room temperature, add water to the reaction system, adjust the pH to 1 to 4, and carry out a hydrolysis reaction to obtain the compound shown in G-1.

[0026] Step b: Add potassium borohydride to the compound shown in G-1 to carry out a reduction reaction to obtain the compound shown in H-1;

[0027] Step c: Add the compound shown in H-1 and p-toluenesulfonyl chloride to dichloromethane, then add pyridine to carry out an esterification reaction to obtain the compound shown in Formula 2. The specific reaction route is shown below:

[0028]

[0029] 3. Preparation of the compound shown in formula (Ⅰ):

[0030] The compound shown in Formula 1, the compound shown in Formula 2, and potassium carbonate were added to N,N-dimethylformamide and subjected to an etherification reaction at 100–150 °C to obtain the compound shown in Formula I.

[0031]

[0032] Furthermore, R1, R'1, R2, R'2, R3, and R'3 are each independently selected from C1 to C6 straight-chain alkyl groups or C1 to C6 straight-chain alkoxy groups.

[0033] Furthermore, the first component is selected from one or two of the following compounds:

[0034]

[0035] Furthermore, the second component is selected from one or more of the following compounds:

[0036]

[0037]

[0038] Furthermore, the third component is selected from one or more of the following compounds:

[0039]

[0040]

[0041] Furthermore, the low-threshold liquid crystal composition further includes:

[0042] A fourth component consisting of one or more compounds of general formula (Ⅳ);

[0043] A fifth component consisting of one or more compounds of general formula (V);

[0044] A sixth component consisting of one or more compounds of general formula (VI);

[0045] A seventh component consisting of one or more compounds of general formula (Ⅶa) or (Ⅶb); an eighth component consisting of one or more compounds of general formula (Ⅷa) or (Ⅷb); a ninth component consisting of one or more compounds of general formula (Ⅸa) or (Ⅸb);

[0046] The tenth component is composed of one or more compounds of general formula (Xa) or (Xb);

[0047]

[0048]

[0049] Among them, R'4, R5, R'5, R6, R'6, R7, R'7, R8, R'8, R'9, R 10 R 11 、R' 11 Each is independently selected from a C1-C6 straight-chain alkyl group or a C1-C6 straight-chain alkoxy group; R4, R' 10 It is selected from C1-C6 straight-chain alkyl, C1-C6 straight-chain alkoxy or C1-C4 alkenyl; R9 is a C1-C6 straight-chain alkyl;

[0050] It is a 1,4-substituted phenylene or a trans-1,4-substituted cyclohexyl group;

[0051] m3, m4, m5, m6, m7, m8, m9, m 10 It can be 0 or 1.

[0052] Of the above components:

[0053] The third component compound has a large dielectric anisotropy and a relatively small refractive index anisotropy (Δn), while maintaining a low melting point and a low clearing point, which plays an important role in regulating the dielectric anisotropy of the composition.

[0054] The fourth component compound has good miscibility, a low refractive index, a certain degree of polarity, and low viscosity, and plays an important role in adjusting the threshold, viscosity and other properties of the composition.

[0055] The fifth component compound has good miscibility, a wide nematic phase temperature range, moderate refractive index anisotropy, large elastic constant, and moderate viscosity.

[0056] The sixth component compound has a relatively large negative dielectric anisotropy and a relatively small refractive index anisotropy Δn value, playing an important role in adjusting both the refractive index and dielectric anisotropy parameters.

[0057] Both the seventh and eighth component compounds possess characteristics such as high refractive index anisotropy, wide nematic liquid crystal range, high Ni transition temperature, and moderate viscosity, playing an important role in adjusting the operating temperature range and refractive index coverage of the composition.

[0058] The ninth component compound has a high Ni transition temperature, a wide nematic phase temperature range, and high viscosity, which plays an important role in adjusting the operating temperature range of the composition.

[0059] The tenth component compound has a low Ni transition temperature, very small refractive index anisotropy, low viscosity, good miscibility, and large elastic constant, which plays an important role in adjusting the viscosity, elastic constant and other properties of the composition.

[0060] Furthermore, R4, R' 10 Selected from C1-C6 straight-chain alkyl, C1-C6 straight-chain alkoxy, CH2=CH-, CH2=CH-CH2-, CH3-CH=CH- or CH2=CH-CH2-CH2-.

[0061] Furthermore, the fourth component is selected from one or more of the following compounds:

[0062]

[0063] Furthermore, the fifth component is selected from one or more of the following compounds:

[0064]

[0065]

[0066] Furthermore, the sixth component is selected from one or more of the following compounds:

[0067] Furthermore, the seventh component is selected from one or more of the following compounds:

[0068]

[0069]

[0070] Furthermore, the eighth component is selected from the following compounds:

[0071]

[0072] Furthermore, in the ninth component, compound IXa is selected from one or more of the following compounds:

[0073]

[0074] It should be noted that all compounds of this invention can be prepared by known methods, and the liquid crystal compositions are prepared by conventional methods. Typically, the components are mixed and heated to dissolve each other until the dissolution process is observed to be complete. Alternatively, all components can be dissolved in a suitable organic solvent, thoroughly mixed, and the solvent removed to obtain a homogeneous liquid crystal composition.

[0075] The liquid crystal medium of the present invention may further include additives known to those skilled in the art and described in the literature, enabling it to be used in any type of liquid crystal display disclosed to date.

[0076] Furthermore, the low threshold liquid crystal composition comprises the following components in weight percentage:

[0077] Component 1: 2%–15%; Component 2: 1%–15%; Component 3: 2%–50%; Component 4: 0%–38%; Component 5: 0%–30%; Component 6: 0%–30%; Component 7: 0%–20%; Component 8: 0%–20%; Component 9: 0%–20%; and Component 10: 0%–30%.

[0078] Furthermore, the low threshold liquid crystal composition comprises the following components in weight percentages:

[0079] Component 1: 4%–13%; Component 2: 2%–13%; Component 3: 10%–45%; Component 4: 0%–35%; Component 5: 0%–30%; Component 6: 0%–28%; Component 7: 0%–15%; Component 8: 0%–15%; Component 9: 0%–10%; and Component 10: 0%–25%.

[0080] Preferably, the low threshold liquid crystal composition comprises the following components in weight percentages:

[0081] Component 1: 4%–10%; Component 2: 2%–10%; Component 3: 25%–45%; Component 4: 5%–35%; Component 5: 10%–30%; Component 6: 1%–25%; Component 7: 2%–10%; Component 8: 3%–10%; Component 9: 0%–5%; and Component 10: 5%–20%.

[0082] The liquid crystal composition provided by this invention, which is composed of the above ten components in a specific ratio, has strong UV resistance, good high and low temperature stability, a threshold voltage as low as about 1.0V, good anti-pollution ability, and a wide operating temperature range (-30℃ to 60℃), which can fully meet the performance requirements of low threshold and low power consumption VA-LCD. Detailed Implementation

[0083] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0084] To better illustrate the present invention, further examples are provided below.

[0085] The preparation method of the first component in the following embodiments includes the following steps:

[0086] The preparation method of the first component includes the following steps:

[0087] 1. Preparation of the compound shown in Formula 1:

[0088] Step 1: Compound A-1, compound A-2, dichlorodi-tert-butyl-(4-dimethylaminophenyl)phosphine palladium(II) and potassium carbonate are added to a mixed solvent of water, ethanol and toluene, and the mixture is subjected to a Suzuki coupling reaction at 70-80°C to obtain compound B-1.

[0089] Step 2: Dissolve the compound shown in B-1 in toluene, then add sodium acetate and hydroxylamine hydrochloride, and carry out an addition reaction at 40-50°C. Cool the reaction system to 0-10°C, add thionyl chloride, and carry out a dehydration reaction at 50-60°C to obtain the compound shown in C-1.

[0090] Step 3: Dissolve the compound shown in C-1 in tetrahydrofuran, cool it to -80 to -70°C, add diisopropylaminolithium for the first heat preservation, add triisobutyl borate for the second heat preservation, and hydrolyze to obtain the compound shown in D-1.

[0091] Step 4: Add hydrogen peroxide solution to the compound shown in D-1 and carry out an oxidation reaction at 30-40°C to obtain the compound shown in Formula 1. The specific reaction route is shown below:

[0092]

[0093] 2. Preparation of the compound shown in Formula 2:

[0094] Step a: Dissolve the compound shown in F-1 in tetrahydrofuran, cool to -90 to -70°C, then add diisopropylaminolithium to carry out a dehydrogenation reaction, then add N,N-dimethylformamide to carry out an addition reaction, heat to room temperature, add water to the reaction system, adjust the pH to 1 to 4, and carry out a hydrolysis reaction to obtain the compound shown in G-1.

[0095] Step b: Add potassium borohydride to the compound shown in G-1 to carry out a reduction reaction to obtain the compound shown in H-1;

[0096] Step c: Add the compound shown in H-1 and p-toluenesulfonyl chloride to dichloromethane, then add pyridine to carry out an esterification reaction to obtain the compound shown in Formula 2. The specific reaction route is shown below:

[0097]

[0098] 3. Preparation of the compound shown in formula (Ⅰ):

[0099] The compound shown in Formula 1, the compound shown in Formula 2, and potassium carbonate were added to N,N-dimethylformamide and subjected to an etherification reaction at 100–150 °C to obtain the compound shown in Formula I.

[0100]

[0101] This invention employs a commonly used thermal dissolution method to prepare liquid crystals, with the specific steps as follows:

[0102] (1) Weighing the liquid crystal compound

[0103] Weigh the required liquid crystal compounds using a balance according to their weight percentage. There is no strict requirement for the order in which the compounds are added, but they are usually weighed and mixed in order of their melting points from high to low, so that they can be more easily and evenly melted during heating.

[0104] (2) Heating and stirring

[0105] The weighed liquid crystal compound was placed on a magnetic stirrer, heated and stirred continuously until all components were completely melted and uniformly mixed to form a homogeneous liquid crystal composition.

[0106] (3) Filtration and rotary evaporation

[0107] The uniformly heated liquid crystal composition is filtered to remove any impurities. Subsequently, the liquid crystal composition is treated with a rotary evaporator to remove solvents and degas, ensuring the purity of the final liquid crystal composition.

[0108] (4) Packaging

[0109] The processed liquid crystal composition is then encapsulated to obtain the target sample.

[0110] Unless otherwise stated, percentages in this context are weight percentages; temperatures are in degrees Celsius.

[0111] The embodiments of this invention tested the performance of liquid crystal materials, specifically including:

[0112] NI: Nematic-isotropic phase transition temperature (°C), considered as the clearing point temperature;

[0113] η: Bulk viscosity (mPa·s) at 20℃;

[0114] Δε: Dielectric anisotropy, the difference in dielectric constant of the liquid crystal measured under vertical cell conditions with a driving frequency of 1kHz VA;

[0115] Δn: Optical anisotropy, liquid crystal refractive index anisotropy measured under 20℃ and 589nm light source conditions;

[0116] V 90 The liquid crystal driving voltage was measured under the following test conditions:

[0117] Drive frequency fdrive = 128Hz;

[0118] Bias ratio = 1;

[0119] Duty cycle = 1;

[0120] Cell gap thickness = 5.2 μm;

[0121] The test temperature was 23±2℃.

[0122] In the following examples, the first to tenth components are abbreviated as I to X, respectively.

[0123] Example 1

[0124] This embodiment provides a liquid crystal composition, wherein the mass percentage of each component is as follows:

[0125]

[0126]

[0127]

[0128]

[0129] The performance parameters of the liquid crystal composition prepared in this embodiment are as follows: N1: 72.5℃;

[0130] η: 355.0 mPa·s;

[0131] Δε: -17.38;

[0132] Δn: 0.088;

[0133] V 90 : 0.956.

[0134] Example 2

[0135] This embodiment provides a liquid crystal composition, wherein the mass percentage of each component is as follows:

[0136]

[0137]

[0138]

[0139]

[0140] The liquid crystal composition of this embodiment has the following performance parameters:

[0141] NI: 70.8℃;

[0142] η: 231 mPa·s;

[0143] Δε: -15.54

[0144] Δn: 0.075;

[0145] V 90 :1.0.

[0146] Example 3

[0147] This embodiment provides a liquid crystal composition, wherein the mass percentage of each component is as follows:

[0148]

[0149]

[0150]

[0151]

[0152] The liquid crystal composition of this embodiment has the following performance parameters:

[0153] NI: 70.3℃;

[0154] η: 341 mPa·s;

[0155] Δε: -16.1;

[0156] Δn: 0.090;

[0157] V 90 : 0.933.

[0158] Example 4

[0159] This embodiment provides a liquid crystal composition, wherein the mass percentage of each component is as follows:

[0160]

[0161]

[0162]

[0163] The liquid crystal composition of this embodiment has the following performance parameters:

[0164] NI: 69.2℃;

[0165] η: 333.7 mPa·s;

[0166] Δε: -16.48;

[0167] Δn: 0.072;

[0168] V 90 : 0.978.

[0169] Example 5

[0170] This embodiment provides a liquid crystal composition, wherein the mass percentage of each component is as follows:

[0171]

[0172]

[0173]

[0174] The liquid crystal composition of this embodiment has the following performance parameters:

[0175] NI: 72℃;

[0176] η: 371 mPa·s;

[0177] Δε: -17.37;

[0178] Δn: 0.087;

[0179] V 90 : 0.933.

[0180] Example 6

[0181] This embodiment provides a liquid crystal composition, wherein the mass percentage of each component is as follows:

[0182]

[0183]

[0184]

[0185] The liquid crystal composition of this embodiment has the following performance parameters:

[0186] NI: 74℃;

[0187] η: 378 Pa·s;

[0188] Δε: -15.62;

[0189] Δn: 0.0977;

[0190] V 90 : 0.963.

[0191] Example 7

[0192] This embodiment provides a liquid crystal composition, wherein the mass percentage of each component is as follows:

[0193]

[0194]

[0195]

[0196] The liquid crystal composition of this embodiment has the following performance parameters: NI: 70.2℃;

[0197] η: 350 mPa·s;

[0198] Δε: -14.95;

[0199] Δn: 0.064;

[0200] V 90 1.010.

[0201] Example 8

[0202] This embodiment provides a liquid crystal composition, wherein the mass percentage of each component is as follows:

[0203]

[0204]

[0205]

[0206] The liquid crystal composition of this embodiment has the following performance parameters:

[0207] NI: 77℃;

[0208] η: 411 mPa·s;

[0209] Δε: -17.55;

[0210] Δn: 0.0955;

[0211] V 90 : 0.986.

[0212] Example 9

[0213] This embodiment provides a liquid crystal composition, wherein the mass percentage of each component is as follows:

[0214]

[0215]

[0216]

[0217]

[0218] The liquid crystal composition of this embodiment has the following performance parameters:

[0219] NI: 59℃;

[0220] η: 192 mPa·s;

[0221] Δε: -16.50;

[0222] Δn: 0.0706;

[0223] V 90 : 1.03.

[0224] Example 10

[0225] This embodiment provides a liquid crystal composition, wherein the mass percentage of each component is as follows:

[0226]

[0227]

[0228]

[0229] The liquid crystal composition of this embodiment has the following performance parameters:

[0230] NI: 74℃;

[0231] η: 358 Pa·s;

[0232] Δε: -16.32;

[0233] Δn: 0.0101;

[0234] V 90 : 0.963.

[0235] Comparative Example 1

[0236] This comparative example provides a liquid crystal composition, the mass percentage of each component of which is as follows:

[0237]

[0238]

[0239]

[0240] The comparative example liquid crystal composition has the following performance parameters:

[0241] NI: 64℃;

[0242] η: 82 mPa·s;

[0243] Δε: -11.5;

[0244] Δn: 0.0708;

[0245] V 90 : 1.239.

[0246] The liquid crystal compositions provided in Examples 1-10 of this invention have a voltage of approximately 1.0V, and their clearing point is relatively high, approaching the threshold voltage of TN products.

[0247] Table 1 shows a comparison of the performance of the liquid crystal compositions provided in Examples 1-10 and Comparative Example 1 of the present invention.

[0248] Table 1

[0249] Group NI (°C) η(mPa·s) Δε Δn V90(V) Example 1 72.5 355.0 -17.38 0.088 0.956 Example 2 70.8 231.0 -15.54 0.075 1.000 Example 3 70.3 341.0 -16.10 0.090 0.933 Example 4 69.2 333.7 -16.48 0.072 0.978 Example 5 72.0 371.0 -17.37 0.087 0.933 Example 6 74.0 378.0 -15.62 0.0977 0.963 Example 7 70.2 350.0 -14.95 0.064 1.010 Example 8 77.0 411.0 -17.55 0.096 0.986 Example 9 59.0 192.0 -16.50 0.0706 1.030 Example 10 74.0 358.0 -16.32 0.0101 0.963 Comparative Example 1 64.0 82.0 -11.51 0.0708 1.239

[0250] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low threshold liquid crystal composition characterized in that, Comprise: a first component consisting of one or more compounds of the general formula (I); a second component consisting of one or more compounds of the general formula (II); a third component consisting of one or more compounds of the general formula (III); wherein R1, R'1, R2, R'2, R3, R'3 are independently selected from linear alkyl or alkoxy; m1, m2 are 0 or 1.

2. The low threshold liquid crystal composition of claim 1, wherein, Said R1, R'1, R2, R'2, R3, R'3 are independently selected from C1-C6 linear alkyl or C1-C6 linear alkoxy.

3. The low threshold liquid crystal composition of claim 1, wherein, Said first component is selected from one or two of the following compounds:

4. The low threshold liquid crystal composition of claim 1, wherein, Said second component is selected from one or more of the following compounds:

5. The low threshold liquid crystal composition of claim 1, wherein, Said third component is selected from one or more of the following compounds:

6. The low threshold liquid crystal composition of claim 1, wherein, Further comprising: a fourth component consisting of one or more compounds of the general formula (IV); a fifth component consisting of one or more compounds of the general formula (V); a sixth component consisting of one or more compounds of the general formula (VI); a seventh component consisting of one or more compounds of the general formula (VIIa) or (VIIb); an eighth component consisting of one or more compounds of the general formula (VIIIa) or (VIIIb); a ninth component consisting of one or more compounds of the general formula (IXa) or (IXb); a tenth component consisting of one or more compounds of the general formula (Xa) or (Xb); wherein R'4, R5, R'5, R6, R'6, R7, R'7, R8, R'8, R'9, R 10 , R 11 , R' 11 are each independently selected from a C1-C6 linear alkyl group or a C1-C6 linear alkoxy group; R4, R 10 are selected from a C1-C6 linear alkyl group, a C1-C6 linear alkoxy group, or a C1-C4 alkenyl group; and R9 is a C1-C6 linear alkyl group. is 1,4-substituted phenylene or trans-1,4-substituted cyclohexyl; m3, m4, m5, m6, m7, m8, m9, m 10 is 0 or 1.

7. The low threshold liquid crystal composition of claim 5, wherein, Said IXa compound is selected from one or more of the following compounds:

8. The low threshold liquid crystal composition of claim 1, wherein, Components with the following mass percentage content: First component 2% to 15%, second component 1% to 15%, third component 2% to 50%, fourth component 0 to 38%, fifth component 0 to 30%, sixth component 0 to 30%, seventh component 0 to 20%, eighth component 0 to 20%, ninth component 0 to 20%, and tenth component 0 to 30%.

9. The low threshold liquid crystal composition of claim 8, wherein, Components with the following mass percentage content: First component 4% to 13%, second component 2% to 13%, third component 10% to 45%, fourth component 0 to 35%, fifth component 0 to 30%, sixth component 0 to 28%, seventh component 0 to 15%, eighth component 0 to 15%, ninth component 0 to 10%, and tenth component 0 to 25%.

10. The low threshold liquid crystal composition of claim 9, wherein, Components with the following mass percentage content: First component 4% to 10%, second component 2% to 10%, third component 25% to 45%, fourth component 5% to 35%, fifth component 10 to 30%, sixth component 1 to 25%, seventh component 2 to 10%, eighth component 3 to 10%, ninth component 0 to 5%, and tenth component 5 to 20%.

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