Liquid crystal composition and liquid crystal display element and liquid crystal display comprising the same

Abstract

Disclosed are a liquid crystal composition, a liquid crystal display element, and a liquid crystal display device. The liquid crystal composition comprises: a first component selected from one or more compounds represented by Formula I, wherein each of R1 and R2 independently represents H or F, or one or more H atoms are substituted with F; a second component selected from one or more compounds represented by Formula II; and a third component selected from one or more compounds represented by Formula III or Formula IV. The liquid crystal composition has a low γ1, a small γ1 / K 11 , good low-temperature performance, and excellent flicker performance, and can be used to develop a liquid crystal display element or a liquid crystal display device with fast response, wide temperature range, and excellent flicker performance.

Description

Technical Field

[0001] This invention relates to the field of liquid crystal display technology. More specifically, it relates to a liquid crystal composition and a liquid crystal display element or liquid crystal display comprising the liquid crystal composition. Background Technology

[0002] Liquid crystal materials, as important electro-optic functional materials, began their modern application in the mid-20th century. In 1968, RCA Corporation in the United States developed the first liquid crystal display based on dynamic scattering modes. Since then, it has undergone evolutions such as guest-host and twisted nematic types, laying the foundation for modern display technology. In this development process, thin-film transistor (TFT) active matrix technology, with its advantage of independently controlling each sub-pixel, has achieved high contrast, fast response, and high resolution, becoming the core technology driving the leap in liquid crystal display performance.

[0003] Display modes based on the electro-optic effect of liquid crystals have undergone multiple technological iterations, resulting in a landscape of parallel development of various commercial technologies. Twisted Nematic (TN) mode was the earliest commercially viable display mode. It utilizes the twisting and alignment of liquid crystal molecules under an electric field to achieve optical switching, offering advantages such as fast response speed and low driving voltage, but with poor viewing angle characteristics. Vertical Alignment (VA) mode utilizes the tilting behavior of negative liquid crystals under a vertical electric field, and with the aid of a compensation film, it can achieve high contrast and wide viewing angle, dominating the large-screen television market. In-Plane Switching (IPS) mode and its derivative Edge Field Switching (FFS) mode place electrodes on the same substrate, using a horizontal electric field parallel to the substrate to drive liquid crystal molecules to rotate in-plane, thereby achieving extremely wide viewing angles and excellent color performance. It has become the mainstream choice for mobile terminal devices such as smartphones and tablets. Furthermore, emerging technologies such as Blue Phase Liquid Crystal Display (BPLCD) and electrowetting are under continuous exploration, but key bottlenecks such as material stability and driving voltage still need to be overcome before large-scale mass production.

[0004] Liquid crystal displays (LCDs) often face complex environmental temperature variations in practical applications, especially in automotive displays, portable outdoor devices, and some industrial-grade display products. Low-temperature storage and operating performance have become crucial indicators of the reliability of liquid crystal materials. In low-temperature environments, liquid crystal materials are prone to crystallization or smectic phase transformation, leading to display failure, severely sluggish response, or even irreversible damage to the liquid crystal cell. Therefore, liquid crystal compositions must possess excellent low-temperature miscibility, maintaining a stable nematic phase for extended periods at temperatures ranging from -20°C to -40°C without crystallization or phase separation. This is a fundamental prerequisite for ensuring stable operation of LCDs in extremely cold environments. Thus, excellent low-temperature miscibility is a core requirement for liquid crystal materials to meet the demands of wide-temperature-range applications.

[0005] With the increasing prevalence of dynamic visual content (such as high-definition video and 3D games) and the widespread adoption of high refresh rate display panels, the demands on the response speed of liquid crystal materials are becoming increasingly stringent. The response time of a liquid crystal is determined by both the cell thickness (d) and the physical properties of the liquid crystal material, and is essentially constrained by the interplay between rotational viscosity (γ1), elastic constant, and cell thickness. To achieve faster response times, there are currently two main technical approaches: First, while maintaining a constant cell thickness, efforts should be made to reduce the γ1 of the liquid crystal material and optimize its relationship with the elastic constant (K). 11 The ratio of γ1 / K 11 One approach is to accelerate the elastic recovery of liquid crystal molecules after the electric field is removed. Another approach is to directly shorten the response time by reducing the cell thickness (d), but this significantly weakens the optical path difference (Δnd), leading to a decrease in panel transmittance. Therefore, it is necessary to simultaneously increase the birefringence (Δn) of the liquid crystal material to compensate for the optical transmission loss caused by the low cell thickness, thereby maintaining the original brightness level while leveraging the speed advantage of low cell thickness. Thus, the core direction of liquid crystal material development for fast response lies in the coordinated pursuit of low γ1 and low γ1 / K. 11 And the combination of high Δn physical properties, thereby breaking through the dual bottlenecks of response speed and display brightness.

[0006] When a liquid crystal display (LCD) is driven by frame inversion, parasitic capacitive coupling between the pixel electrodes and the common electrode causes asymmetry in pixel voltage between adjacent frames, resulting in periodic fluctuations in brightness, known as flicker. With the increasing prevalence of high refresh rate displays and human-computer interaction scenarios, users have increasingly stringent requirements for visual comfort. Flicker has become one of the key indicators for evaluating display image quality, especially in medium-to-large-sized and high-resolution panels, where higher demands are placed on low flicker characteristics across a wide temperature range and full grayscale.

[0007] Furthermore, with the trend towards thinner, lighter, and higher-resolution mobile display devices, the light transmittance of liquid crystal materials is facing increasingly stringent requirements. Higher transmittance means a brighter display effect at the same backlight brightness, or reduced backlight power consumption at the same display brightness, thereby extending battery life. The transmittance performance of liquid crystal materials is related to the dielectric constant (ε) perpendicular to the long axis of the molecules. ⊥ ) and dielectric anisotropy (Δε, i.e., the dielectric constant ε∥ parallel to the long axis of the molecule and ε ⊥ The difference (ε) is closely related. A higher ε ⊥ / Δε helps enhance the driving efficiency of the edge electric field on liquid crystal molecules, resulting in a greater increase in transmittance under the same voltage conditions. Therefore, while maintaining other properties without degradation, optimizing the ε of the liquid crystal material... ⊥ Improving panel transmittance by adjusting the / Δε ratio has become one of the important directions in the current research and development of liquid crystal materials.

[0008] Image sticking in liquid crystal displays (LCDs) is a key factor affecting their long-term display quality and lifespan. Image sticking is primarily related to mobile ionic impurities in the liquid crystal material, charge accumulation at the alignment layer and liquid crystal interface, and the polarization characteristics of the liquid crystal molecules themselves. When a display panel displays a fixed image for an extended period and then switches to another image, the previous frame remains visible, severely degrading the user experience. This is especially true in FFS and IPS modes, where the working electrodes are located on the same substrate and are constantly subjected to AC or DC bias, placing higher demands on the voltage retention rate and interface charge trapping characteristics of the liquid crystal material. Even trace amounts of ionic impurities in the liquid crystal composition can migrate and accumulate at the interface under long-term electric field conditions, forming a built-in electric field and causing image sticking. Therefore, developing liquid crystal materials with ultra-high voltage retention rate, extremely low ion concentration, and excellent compatibility with alignment layer materials is a necessary prerequisite for ensuring image sticking-free and long-life operation of displays. This places extremely high demands on the purification process and molecular structure design of liquid crystal materials.

[0009] In recent years, the development of high-refractive-index liquid crystal monomers, represented by thiophene structures, has become a hot topic in the liquid crystal materials industry. For example, the following thiophene derivatives are disclosed in patent application CN102325762B:

[0010] The following thiophene derivatives are disclosed in patent application CN116496794A:

[0011] These thiophene structures possess the excellent properties of both low rotational viscosity and high birefringence. However, with the iterative upgrades in display technology, the performance bottleneck of existing liquid crystal materials in terms of response speed is becoming increasingly prominent, necessitating the development of novel molecular structures with faster response speeds to meet the increasingly stringent demands of dynamic displays. Summary of the Invention

[0012] Therefore, the object of the present invention is to provide a liquid crystal composition and a liquid crystal display element and a liquid crystal display comprising the liquid crystal composition, so as to solve at least one of the above-mentioned technical problems. The liquid crystal composition of the present invention has a lower γ1 and a smaller γ1 / K. 11 Its excellent low-temperature performance and superior flicker performance make it suitable for developing liquid crystal display elements or liquid crystal displays with fast response, wide temperature range, and excellent flicker performance.

[0013] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a liquid crystal composition comprising: The first component is selected from one or more compounds shown in Formula I. Ⅰ in, R1 and R2 each independently represent a fluorine atom, an alkyl group with 1-10 carbon atoms, an alkoxy group with 1-10 carbon atoms, or an alkenyl or alkenoxy group with 2-10 carbon atoms, wherein one or more non-adjacent -CH2- can be -C≡C-, -CH=CH, -CF2O-, -OCF2-, -O-, -CO-O-, -O-CO-, , , , or The O atoms are replaced in a manner that prevents them from being directly connected to each other, and one or more H atoms can be replaced by fluorine atoms; , Each represents independently or ; , Each represents independently , or One or more H atoms can be replaced by F atoms; L1 and L2 each independently represent a hydrogen atom, a fluorine atom, an alkyl group having 1-10 carbon atoms, an alkoxy group having 1-10 carbon atoms, or an alkenyl or alkenoxy group having 2-10 carbon atoms, wherein any one or more unconnected -CH2- can be replaced by -O-, -CO-, -CH2O-, -OCH2-, -COO-, or -OOC- in such a way that the O atoms are not directly connected to each other, and one or more H atoms can be replaced by a fluorine atom; n represents 0, 1, or 2; When n represents 2, Same or different; The second component is selected from one or more compounds shown in Formula II. II in, R3 and R4 represent alkyl groups having 1-10 carbon atoms, alkoxy groups having 1-10 carbon atoms, or alkenyl groups having 2-10 carbon atoms, wherein one or more unconnected -CH2- atoms may optionally be substituted with cyclopropylene, cyclopentylene, cyclopentenylene, or cyclobutylene, and wherein one or more H atoms may be substituted with F. express , , or ; express , , , or ; m represents 0, 1, or 2. When m represents 2... Same or different; Z1 represents a single bond, -COO-, -CH=CH-, or -C≡C-; and The third component is selected from one or more compounds shown in Formula III and Formula IV. III IV R5 and R6 each independently represent an alkyl group having 1-10 carbon atoms, an alkenyl group having 2-10 carbon atoms, or an alkoxy group having 1-10 carbon atoms, wherein one or more unconnected -CH2- groups may optionally be substituted with cyclopropyl, cyclopentyl, or cyclobutyl, and any one or more hydrogen atoms may optionally be substituted with fluorine atoms. and Each represents independently , , , , , , , , or ; express , , , or ; express , , , , or ; X1 and X2 each independently represent H or F; Z2 represents a single bond, -CH2CH2-, -CH2O-, -OCH2-, -COO-, or -OCO-; 'a' represents 1, 2, or 3; when 'a' represents 2 or 3... They are either the same or different independently; b represents 1 or 2; when b represents 2... They are either the same or different independently; c represents 1, 2, or 3. When c represents 2 or 3... They are either the same or different independently; d represents 0 or 1; Y1 and Y2 independently represent H, F, -OCF3, -CF3, -CF=CF2, -OCHF2, -OCHFCF3, -OCF=CF2 or Cl.

[0014] In a second aspect, the present invention provides a liquid crystal display element comprising the liquid crystal composition described in the first aspect above.

[0015] Thirdly, the present invention provides a liquid crystal display comprising the liquid crystal composition described in the first aspect above.

[0016] The beneficial effects of this invention are as follows: The liquid crystal composition provided by the present invention has a lower γ1 and a smaller γ1 / K. 11 It exhibits excellent low-temperature performance and superior flicker performance. The liquid crystal composition of this invention can be used in liquid crystal display elements or liquid crystal displays that feature fast response, wide temperature range, and excellent flicker performance. Attached Figure Description

[0017] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0018] Figure 1 The MS mass spectrum of the organic compound represented by formula I-1-2-12 is shown.

[0019] Figure 2 The MS mass spectrum of the organic compound represented by formula I-1-3-12 is shown.

[0020] Figure 3 The MS mass spectrum of the organic compound represented by Formula I-1-4-2 is shown. Detailed Implementation

[0021] To more clearly illustrate the present invention, the following description, in conjunction with preferred embodiments and accompanying drawings, further explains the invention. Similar components in the drawings are indicated by the same reference numerals. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of the present invention.

[0022] According to a first embodiment of the present invention, a liquid crystal composition is provided, the liquid crystal composition comprising: The first component is selected from one or more compounds shown in Formula I. Ⅰ in, R1 and R2 each independently represent a fluorine atom, an alkyl group with 1-10 carbon atoms, an alkoxy group with 1-10 carbon atoms, or an alkenyl or alkenoxy group with 2-10 carbon atoms, wherein one or more non-adjacent -CH2- can be -C≡C-, -CH=CH, -CF2O-, -OCF2-, -O-, -CO-O-, -O-CO-, , , , or The O atoms are replaced in a manner that prevents them from being directly connected to each other, and one or more H atoms can be replaced by fluorine atoms; , Each represents independently or ; , Each represents independently , or One or more H atoms can be replaced by F atoms; L1 and L2 each independently represent a hydrogen atom, a fluorine atom, an alkyl group having 1-10 carbon atoms, an alkoxy group having 1-10 carbon atoms, or an alkenyl or alkenoxy group having 2-10 carbon atoms, wherein any one or more unconnected -CH2- can be replaced by -O-, -CO-, -CH2O-, -OCH2-, -COO-, or -OOC- in such a way that the O atoms are not directly connected to each other, and one or more H atoms can be replaced by a fluorine atom; n represents 0, 1, or 2; When n represents 2, Same or different; The second component is selected from one or more compounds shown in Formula II. II in, R3 and R4 represent alkyl groups having 1-10 carbon atoms, alkoxy groups having 1-10 carbon atoms, or alkenyl groups having 2-10 carbon atoms, wherein one or more unconnected -CH2- atoms may optionally be substituted with cyclopropylene, cyclopentylene, cyclopentenylene, or cyclobutylene, and wherein one or more H atoms may be substituted with F. express , , or ; express , , , or ; m represents 0, 1, or 2. When m represents 2... Same or different; Z1 represents a single bond, -COO-, -CH=CH-, or -C≡C-; and The third component is selected from one or more compounds shown in Formula III and Formula IV. III IV R5 and R6 each independently represent an alkyl group having 1-10 carbon atoms, an alkenyl group having 2-10 carbon atoms, or an alkoxy group having 1-10 carbon atoms, wherein one or more unconnected -CH2- groups may optionally be substituted with cyclopropyl, cyclopentyl, or cyclobutyl, and any one or more hydrogen atoms may optionally be substituted with fluorine atoms. and Each represents independently , , , , , , , , or ; express , , , or ; express , , , , or ; X1 and X2 each independently represent H or F; Z2 represents a single bond, -CH2CH2-, -CH2O-, -OCH2-, -COO-, or -OCO-; 'a' represents 1, 2, or 3; when 'a' represents 2 or 3... They are either the same or different independently; b represents 1 or 2; when b represents 2... They are either the same or different independently; c represents 1, 2, or 3. When c represents 2 or 3... They are either the same or different independently; d represents 0 or 1; Y1 and Y2 independently represent H, F, -OCF3, -CF3, -CF=CF2, -OCHF2, -OCHFCF3, -OCF=CF2 or Cl.

[0023] In the above technical solutions, the compound shown in Formula IV is different from the compound shown in Formula II.

[0024] In some examples, L1 and L2 independently represent hydrogen atoms, fluorine atoms, alkyl groups having 1-6 carbon atoms, alkoxy groups having 1-6 carbon atoms, alkenyl groups having 2-6 carbon atoms, or alkenyloxy groups.

[0025] In some examples, the , Each represents independently , , , , , , , or .

[0026] In some examples, the compound represented by Formula I is selected from the compounds shown in I-1 to I-9 below: Ⅰ-1 Ⅰ-2 Ⅰ-3 I-4 Ⅰ-5 Ⅰ-6 Ⅰ-7 I-8 Ⅰ-9 in, L 11 L 21 Each of the following can independently represent a fluorine atom, an alkyl group having 1-3 carbon atoms, an alkoxy group having 1-3 carbon atoms, or an alkenyl group having 2-3 carbon atoms, and one or more of the H atoms may be substituted by a fluorine atom; express , , , , or ; express , , , , , or ; When n=2, Same or different.

[0027] In some specific examples, the compound represented by Formula I-1 is selected from the compounds represented by Formulas I-1-1 to I-1-10. Ⅰ-1-1 Ⅰ-1-2 Ⅰ-1-3 Ⅰ-1-4 Ⅰ-1-5 Ⅰ-1-6 Ⅰ-1-7 Ⅰ-1-8 Ⅰ-1-9 Ⅰ-1-10; in, R 11 and R 21 Each of these groups independently represents a fluorine atom, an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, or an alkenyl group having 2-6 carbon atoms, wherein one or more non-adjacent -CH2- groups can be... , , , or Substitution, and one or more of the H atoms can be substituted by fluorine atoms.

[0028] In some specific examples, R 11 and R 21 Each of these terms independently represents an alkyl group having 1-5 carbon atoms, an alkoxy group having 1-5 carbon atoms, or an alkenyl group having 2-5 carbon atoms.

[0029] In some more specific examples, the compound represented by Formula I-1-1 is selected from the compounds represented by Formulas I-1-1-1 to I-1-1-11: Ⅰ-1-1-1 Ⅰ-1-1-2 Ⅰ-1-1-3 Ⅰ-1-1-4 Ⅰ-1-1-5 Ⅰ-1-1-6 Ⅰ-1-1-7 Ⅰ-1-1-8 Ⅰ-1-1-9 Ⅰ-1-1-10 Ⅰ-1-1-11.

[0030] In some more specific examples, the compounds represented by Formula I-1-2 are selected from the compounds represented by Formulas I-1-2-1 to I-1-2-67: Ⅰ-1-2-1 Ⅰ-1-2-2 Ⅰ-1-2-3 Ⅰ-1-2-4 Ⅰ-1-2-5 Ⅰ-1-2-6 Ⅰ-1-2-7 Ⅰ-1-2-8 Ⅰ-1-2-9 Ⅰ-1-2-10 Ⅰ-1-2-11 Ⅰ-1-2-12 Ⅰ-1-2-13 Ⅰ-1-2-14 Ⅰ-1-2-15 Ⅰ-1-2-16 Ⅰ-1-2-17 Ⅰ-1-2-18 Ⅰ-1-2-19 Ⅰ-1-2-20 Ⅰ-1-2-21 Ⅰ-1-2-22 Ⅰ-1-2-23 Ⅰ-1-2-24 Ⅰ-1-2-25 Ⅰ-1-2-26 Ⅰ-1-2-27 Ⅰ-1-2-28 Ⅰ-1-2-29 Ⅰ-1-2-30 Ⅰ-1-2-31 Ⅰ-1-2-32 Ⅰ-1-2-33 Ⅰ-1-2-34 Ⅰ-1-2-35 Ⅰ-1-2-36 Ⅰ-1-2-37 Ⅰ-1-2-38 Ⅰ-1-2-39 Ⅰ-1-2-40 Ⅰ-1-2-41 Ⅰ-1-2-42 Ⅰ-1-2-43 Ⅰ-1-2-44 Ⅰ-1-2-45 Ⅰ-1-2-46 Ⅰ-1-2-47 Ⅰ-1-2-48 Ⅰ-1-2-49 Ⅰ-1-2-50 Ⅰ-1-2-51 Ⅰ-1-2-52 Ⅰ-1-2-53 Ⅰ-1-2-54 Ⅰ-1-2-55 Ⅰ-1-2-56 Ⅰ-1-2-57 Ⅰ-1-2-58 Ⅰ-1-2-59 Ⅰ-1-2-60 Ⅰ-1-2-61 Ⅰ-1-2-62 Ⅰ-1-2-63 Ⅰ-1-2-64 Ⅰ-1-2-65 Ⅰ-1-2-66 Ⅰ-1-2-67.

[0031] In some more specific examples, the compounds represented by Formula I-1-3 are selected from the compounds represented by Formulas I-1-3-1 to I-1-3-68. Ⅰ-1-3-1 Ⅰ-1-3-2 Ⅰ-1-3-3 Ⅰ-1-3-4 Ⅰ-1-3-5 Ⅰ-1-3-6 Ⅰ-1-3-7 Ⅰ-1-3-8 Ⅰ-1-3-9 Ⅰ-1-3-10 Ⅰ-1-3-11 Ⅰ-1-3-12 Ⅰ-1-3-13 Ⅰ-1-3-14 Ⅰ-1-3-15 Ⅰ-1-3-16 Ⅰ-1-3-17 Ⅰ-1-3-18 Ⅰ-1-3-19 Ⅰ-1-3-20 Ⅰ-1-3-21 Ⅰ-1-3-22 Ⅰ-1-3-23 Ⅰ-1-3-24 Ⅰ-1-3-25 Ⅰ-1-3-26 Ⅰ-1-3-27 Ⅰ-1-3-28 Ⅰ-1-3-29 Ⅰ-1-3-30 Ⅰ-1-3-31 Ⅰ-1-3-32 Ⅰ-1-3-33 Ⅰ-1-3-34 Ⅰ-1-3-35 Ⅰ-1-3-36 Ⅰ-1-3-37 Ⅰ-1-3-38 Ⅰ-1-3-39 Ⅰ-1-3-40 Ⅰ-1-3-41 Ⅰ-1-3-42 Ⅰ-1-3-43 Ⅰ-1-3-44 Ⅰ-1-3-45 Ⅰ-1-3-46 Ⅰ-1-3-47 Ⅰ-1-3-48 Ⅰ-1-3-49 Ⅰ-1-3-50 Ⅰ-1-3-51 Ⅰ-1-3-52 Ⅰ-1-3-53 Ⅰ-1-3-54 Ⅰ-1-3-55 Ⅰ-1-3-56 Ⅰ-1-3-57 Ⅰ-1-3-58 Ⅰ-1-3-59 Ⅰ-1-3-60 Ⅰ-1-3-61 Ⅰ-1-3-62 Ⅰ-1-3-63 Ⅰ-1-3-64 Ⅰ-1-3-65 Ⅰ-1-3-66 Ⅰ-1-3-67 Ⅰ-1-3-68.

[0032] In some more specific examples, the compounds represented by Formula I-1-4 are selected from the compounds represented by Formulas I-1-4-1 to I-1-4-22: Ⅰ-1-4-1 Ⅰ-1-4-2 Ⅰ-1-4-3 Ⅰ-1-4-4 Ⅰ-1-4-5 Ⅰ-1-4-6 Ⅰ-1-4-7 Ⅰ-1-4-8 Ⅰ-1-4-9 Ⅰ-1-4-10 Ⅰ-1-4-11 Ⅰ-1-4-12 Ⅰ-1-4-13 Ⅰ-1-4-14 Ⅰ-1-4-15 Ⅰ-1-4-16 Ⅰ-1-4-17 Ⅰ-1-4-18 Ⅰ-1-4-19 Ⅰ-1-4-20 Ⅰ-1-4-21 Ⅰ-1-4-22.

[0033] In some more specific examples, the compounds represented by Formula I-1-5 are selected from the compounds represented by Formulas I-1-5-1 to I-1-5-8: Ⅰ-1-5-1 Ⅰ-1-5-2 Ⅰ-1-5-3 Ⅰ-1-5-4 Ⅰ-1-5-5 Ⅰ-1-5-6 Ⅰ-1-5-7 Ⅰ-1-5-8.

[0034] In some more specific examples, the compounds represented by Formula I-1-6 are selected from the compounds represented by Formulas I-1-6-1 to I-1-6-8: Ⅰ-1-6-1 Ⅰ-1-6-2 Ⅰ-1-6-3 Ⅰ-1-6-4 Ⅰ-1-6-5 Ⅰ-1-6-6 Ⅰ-1-6-7 Ⅰ-1-6-8.

[0035] In some more specific examples, the compounds represented by Formula I-1-8 are selected from the compounds represented by Formulas I-1-8-1 to I-1-8-5: Ⅰ-1-8-1 Ⅰ-1-8-2 Ⅰ-1-8-3 Ⅰ-1-8-4 Ⅰ-1-8-5.

[0036] In some more specific examples, the compound represented by Formula I-1-9 is the compound represented by Formula I-1-9-1: Ⅰ-1-9-1.

[0037] In some more specific examples, the compound represented by Formula I-1-10 is the compound represented by Formula I-1-10-1: Ⅰ-1-10-1.

[0038] In some specific examples, the compound represented by formula I-2 is selected from the compounds represented by formulas I-2-1 to I-2-12. Ⅰ-2-1 Ⅰ-2-2 Ⅰ-2-3 Ⅰ-2-4 Ⅰ-2-5 Ⅰ-2-6 Ⅰ-2-7 Ⅰ-2-8 Ⅰ-2-9 Ⅰ-2-10 Ⅰ-2-11 Ⅰ-2-12; in, R 11 and R 21 Each of these groups independently represents a fluorine atom, an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, or an alkenyl group having 2-6 carbon atoms, wherein one or more non-adjacent -CH2- groups can be... , , , or Substitution, and one or more of the H atoms can be substituted by fluorine atoms.

[0039] In some specific examples, R 11 and R 21 Each of these terms independently represents an alkyl group having 1-5 carbon atoms, an alkoxy group having 1-5 carbon atoms, or an alkenyl group having 2-5 carbon atoms.

[0040] In some more specific examples, the compound represented by Formula I-2-2 is selected from the compounds represented by Formulas I-2-2-1 to I-2-2-18: Ⅰ-2-2-1 Ⅰ-2-2-2 Ⅰ-2-2-3 Ⅰ-2-2-4 Ⅰ-2-2-5 Ⅰ-2-2-6 Ⅰ-2-2-7 Ⅰ-2-2-8 Ⅰ-2-2-9 Ⅰ-2-2-10 Ⅰ-2-2-11 Ⅰ-2-2-12 Ⅰ-2-2-13 Ⅰ-2-2-14 Ⅰ-2-2-15 Ⅰ-2-2-16 Ⅰ-2-2-17 Ⅰ-2-2-18.

[0041] In some more specific examples, the compounds represented by Formula I-2-4 are selected from the compounds represented by Formulas I-2-4-1 to I-2-4-18: Ⅰ-2-4-1 Ⅰ-2-4-2 Ⅰ-2-4-3 Ⅰ-2-4-4 Ⅰ-2-4-5 Ⅰ-2-4-6 Ⅰ-2-4-7 Ⅰ-2-4-8 Ⅰ-2-4-9 Ⅰ-2-4-10 Ⅰ-2-4-11 Ⅰ-2-4-12 Ⅰ-2-4-13 Ⅰ-2-4-14 Ⅰ-2-4-15 Ⅰ-2-4-16 Ⅰ-2-4-17 Ⅰ-2-4-18.

[0042] In some more specific examples, the compounds represented by Formula I-2-5 are selected from the compounds represented by Formulas I-2-5-1 to I-2-5-18: Ⅰ-2-5-1 Ⅰ-2-5-2 Ⅰ-2-5-3 Ⅰ-2-5-4 Ⅰ-2-5-5 Ⅰ-2-5-6 Ⅰ-2-5-7 Ⅰ-2-5-8 Ⅰ-2-5-9 Ⅰ-2-5-10 Ⅰ-2-5-11 Ⅰ-2-5-12 Ⅰ-2-5-13 Ⅰ-2-5-14 Ⅰ-2-5-15 Ⅰ-2-5-16 Ⅰ-2-5-17 Ⅰ-2-5-18.

[0043] In some more specific examples, the compounds represented by Formula I-2-6 are selected from the compounds represented by Formulas I-2-6-1 to I-2-6-18: Ⅰ-2-6-1 Ⅰ-2-6-2 Ⅰ-2-6-3 Ⅰ-2-6-4 Ⅰ-2-6-5 Ⅰ-2-6-6 Ⅰ-2-6-7 Ⅰ-2-6-8 Ⅰ-2-6-9 Ⅰ-2-6-10 Ⅰ-2-6-11 Ⅰ-2-6-12 Ⅰ-2-6-13 Ⅰ-2-6-14 Ⅰ-2-6-15 Ⅰ-2-6-16 Ⅰ-2-6-17 Ⅰ-2-6-18.

[0044] In some specific examples, the compound represented by Formula I-3 is selected from the compounds represented by Formulas I-3-1 to I-3-8. Ⅰ-3-1 Ⅰ-3-2 Ⅰ-3-3、 Ⅰ-3-4 Ⅰ-3-5 Ⅰ-3-6 Ⅰ-3-7 Ⅰ-3-8; in, R 11 and R 21Each of these groups independently represents a fluorine atom, an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, or an alkenyl group having 2-6 carbon atoms, wherein one or more non-adjacent -CH2- groups can be... , , , or Substitution, and one or more of the H atoms can be substituted by fluorine atoms.

[0045] In some specific examples, R 11 and R 21 Each of these terms independently represents an alkyl group having 1-5 carbon atoms, an alkoxy group having 1-5 carbon atoms, or an alkenyl group having 2-5 carbon atoms.

[0046] In some more specific examples, the compound represented by Formula I-3-2 is selected from the compounds represented by Formulas I-3-2-1 to I-3-2-12: Ⅰ-3-2-1 Ⅰ-3-2-2 Ⅰ-3-2-3 Ⅰ-3-2-4 Ⅰ-3-2-5 Ⅰ-3-2-6 Ⅰ-3-2-7 Ⅰ-3-2-8 Ⅰ-3-2-9 Ⅰ-3-2-10 Ⅰ-3-2-11 Ⅰ-3-2-12.

[0047] In some more specific examples, the compounds represented by Formula I-3-3 are selected from the compounds represented by Formulas I-3-3-1 to I-3-3-12: Ⅰ-3-3-1 Ⅰ-3-3-2 Ⅰ-3-3-3 Ⅰ-3-3-4 Ⅰ-3-3-5 Ⅰ-3-3-6 Ⅰ-3-3-7 Ⅰ-3-3-8 Ⅰ-3-3-9 Ⅰ-3-3-10 Ⅰ-3-3-11 Ⅰ-3-3-12 In some more specific examples, the compounds represented by Formula I-3-4 are selected from the compounds represented by Formulas I-3-4-1 to I-3-4-10: Ⅰ-3-4-1 Ⅰ-3-4-2 Ⅰ-3-4-3 Ⅰ-3-4-4 Ⅰ-3-4-5 Ⅰ-3-4-6 Ⅰ-3-4-7 Ⅰ-3-4-8 Ⅰ-3-4-9 Ⅰ-3-4-10.

[0048] In some specific examples, the compound represented by Formula I-4 is selected from the compounds represented by Formulas I-4-1 to I-4-6. Ⅰ-4-1 Ⅰ-4-2 Ⅰ-4-3 Ⅰ-4-4 Ⅰ-4-5 Ⅰ-4-6; in, R 11 and R 21 Each of these groups independently represents a fluorine atom, an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, or an alkenyl group having 2-6 carbon atoms, wherein one or more non-adjacent -CH2- groups can be... , , , or Substitution, and one or more of the H atoms can be substituted by fluorine atoms.

[0049] In some specific examples, R 11 and R 21 Each of these terms independently represents an alkyl group having 1-5 carbon atoms, an alkoxy group having 1-5 carbon atoms, or an alkenyl group having 2-5 carbon atoms.

[0050] In some specific examples, the compound represented by Formula I-4-1 is selected from the compounds represented by Formulas I-4-1-1 to I-4-1-10: Ⅰ-4-1-1 Ⅰ-4-1-2 Ⅰ-4-1-3 Ⅰ-4-1-4 Ⅰ-4-1-5 Ⅰ-4-1-6 Ⅰ-4-1-7 Ⅰ-4-1-8 Ⅰ-4-1-9 Ⅰ-4-1-10.

[0051] In some specific examples, the compound represented by Formula I-4-2 is selected from the compounds represented by Formulas I-4-2-1 to I-4-2-10: Ⅰ-4-2-1 Ⅰ-4-2-2 Ⅰ-4-2-3 Ⅰ-4-2-4 Ⅰ-4-2-5 Ⅰ-4-2-6 Ⅰ-4-2-7 Ⅰ-4-2-8 Ⅰ-4-2-9 Ⅰ-4-2-10.

[0052] In some specific examples, the compound represented by Formula I-4-3 is selected from the compounds represented by Formulas I-4-3-1 to I-4-3-10: Ⅰ-4-3-1 Ⅰ-4-3-2 Ⅰ-4-3-3 Ⅰ-4-3-4 Ⅰ-4-3-5 Ⅰ-4-3-6 Ⅰ-4-3-7 Ⅰ-4-3-8 Ⅰ-4-3-9 Ⅰ-4-3-10.

[0053] In some specific examples, the compound represented by Formula I-4-4 is selected from the compounds represented by Formulas I-4-4-1 to I-4-4-10: Ⅰ-4-4-1 Ⅰ-4-4-2 Ⅰ-4-4-3 Ⅰ-4-4-4 Ⅰ-4-4-5 Ⅰ-4-4-6 Ⅰ-4-4-7 Ⅰ-4-4-8 Ⅰ-4-4-9 Ⅰ-4-4-10.

[0054] In some specific examples, the compound represented by Formula I-4-5 is selected from the compounds represented by Formulas I-4-5-1 to I-4-5-10: Ⅰ-4-5-1 Ⅰ-4-5-2 Ⅰ-4-5-3 Ⅰ-4-5-4 Ⅰ-4-5-5 Ⅰ-4-5-6 Ⅰ-4-5-7 Ⅰ-4-5-8 Ⅰ-4-5-9 Ⅰ-4-5-10.

[0055] In some specific examples, the compound represented by Formula I-5 is selected from the compounds represented by Formulas I-5-1 to I-5-4. Ⅰ-5-1 Ⅰ-5-2 Ⅰ-5-3 Ⅰ-5-4; in, R 11 and R 21 Each of these groups independently represents a fluorine atom, an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, or an alkenyl group having 2-6 carbon atoms, wherein one or more non-adjacent -CH2- groups can be... , , , or Substitution, and one or more of the H atoms can be substituted by fluorine atoms.

[0056] In some specific examples, R 11 and R 21 Each of these terms independently represents an alkyl group having 1-5 carbon atoms, an alkoxy group having 1-5 carbon atoms, or an alkenyl group having 2-5 carbon atoms.

[0057] In some specific examples, the compound represented by Formula I-5-1 is selected from the compounds represented by Formulas I-5-1-1 to I-5-1-12: Ⅰ-5-1-1 Ⅰ-5-1-2 Ⅰ-5-1-3 Ⅰ-5-1-4 Ⅰ-5-1-5 Ⅰ-5-1-6 Ⅰ-5-1-7 Ⅰ-5-1-8 Ⅰ-5-1-9 Ⅰ-5-1-10 Ⅰ-5-1-11 Ⅰ-5-1-12.

[0058] In some specific examples, the compound represented by Formula I-5-2 is selected from the compounds represented by Formulas I-5-2-1 to I-5-2-12: Ⅰ-5-2-1 Ⅰ-5-2-2 Ⅰ-5-2-3 Ⅰ-5-2-4 Ⅰ-5-2-5 Ⅰ-5-2-6 Ⅰ-5-2-7 Ⅰ-5-2-8 Ⅰ-5-2-9 Ⅰ-5-2-10 Ⅰ-5-2-11 Ⅰ-5-2-12.

[0059] In some specific examples, the compound represented by Formula I-5-3 is selected from the compounds represented by Formulas I-5-3-1 to I-5-3-12: Ⅰ-5-3-1 Ⅰ-5-3-2 Ⅰ-5-3-3 Ⅰ-5-3-4 Ⅰ-5-3-5 Ⅰ-5-3-6 Ⅰ-5-3-7 Ⅰ-5-3-8 Ⅰ-5-3-9 Ⅰ-5-3-10 Ⅰ-5-3-11 Ⅰ-5-3-12.

[0060] In some specific examples, the compound represented by Formula I-6 is selected from the compounds represented by Formulas I-6-1 to I-6-8. Ⅰ-6-1 Ⅰ-6-2 Ⅰ-6-3 Ⅰ-6-4 Ⅰ-6-5 Ⅰ-6-6 Ⅰ-6-7 Ⅰ-6-8; in, R 11 and R 21 Each of these groups independently represents a fluorine atom, an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, or an alkenyl group having 2-6 carbon atoms, wherein one or more non-adjacent -CH2- groups can be... , , , or Substitution, and one or more of the H atoms can be substituted by fluorine atoms.

[0061] In some specific examples, R 11 and R 21 Each of these terms independently represents an alkyl group having 1-5 carbon atoms, an alkoxy group having 1-5 carbon atoms, or an alkenyl group having 2-5 carbon atoms.

[0062] In some specific examples, the compounds represented by Formula I-6-2 are selected from Formulas I-6-2-1 to I-6-2-4. Ⅰ-6-2-1 Ⅰ-6-2-2 Ⅰ-6-2-3 Ⅰ-6-2-4.

[0063] In some specific examples, the compounds represented by Formula I-6-3 are selected from Formulas I-6-3-1 to I-6-3-4. Ⅰ-6-3-1 Ⅰ-6-3-2 Ⅰ-6-3-3 Ⅰ-6-3-4.

[0064] In some specific examples, the compounds represented by Formula I-6-4 are selected from Formula I-6-4-1 to I-6-4-4. Ⅰ-6-4-1 Ⅰ-6-4-2 Ⅰ-6-4-3 Ⅰ-6-4-4.

[0065] In some specific examples, the compounds represented by Formula I-6-5 are selected from Formulas I-6-5-1 to I-6-5-4. Ⅰ-6-5-1 Ⅰ-6-5-2 Ⅰ-6-5-3 Ⅰ-6-5-4.

[0066] In some specific examples, the compounds represented by Formula I-6-6 are selected from Formulas I-6-6-1 to I-6-6-4. Ⅰ-6-6-1 Ⅰ-6-6-2 Ⅰ-6-6-3 Ⅰ-6-6-4.

[0067] In some specific examples, the compound represented by formula I-7 is selected from the compounds represented by formulas I-7-1 to I-7-7. Ⅰ-7-1 Ⅰ-7-2 Ⅰ-7-3 Ⅰ-7-4 Ⅰ-7-5 Ⅰ-7-6 Ⅰ-7-7; in, R 11 and R 21 Each of these groups independently represents a fluorine atom, an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, or an alkenyl group having 2-6 carbon atoms, wherein one or more non-adjacent -CH2- groups can be... , , , or Substitution, and one or more of the H atoms can be substituted by fluorine atoms.

[0068] In some specific examples, R 11 and R 21 Each of these terms independently represents an alkyl group having 1-5 carbon atoms, an alkoxy group having 1-5 carbon atoms, or an alkenyl group having 2-5 carbon atoms.

[0069] In some specific examples, the compound represented by Formula I-7-1 is selected from Formulas I-7-1-1 to I-7-1-4. Ⅰ-7-1-1 Ⅰ-7-1-2 Ⅰ-7-1-3 Ⅰ-7-1-4.

[0070] In some specific examples, the compounds represented by Formula I-7-2 are selected from Formulas I-7-2-1 to I-7-2-4. Ⅰ-7-2-1 Ⅰ-7-2-2 Ⅰ-7-2-3 Ⅰ-7-2-4.

[0071] In some specific examples, the compounds represented by Formula I-7-3 are selected from Formulas I-7-3-1 to I-7-3-4. Ⅰ-7-3-1 Ⅰ-7-3-2 Ⅰ-7-3-3 Ⅰ-7-3-4.

[0072] In some specific examples, the compounds represented by Formula I-7-4 are selected from Formula I-7-4-1 to I-7-4-4. Ⅰ-7-4-1 Ⅰ-7-4-2 Ⅰ-7-4-3 Ⅰ-7-4-4.

[0073] In some specific examples, the compounds represented by Formula I-7-5 are selected from Formulas I-7-5-1 to I-7-5-4. Ⅰ-7-5-1 Ⅰ-7-5-2 Ⅰ-7-5-3 Ⅰ-7-5-4.

[0074] In some specific examples, the compound represented by Formula I-8 is selected from the compounds represented by Formulas I-8-1 to I-8-7. Ⅰ-8-1 Ⅰ-8-2 Ⅰ-8-3 Ⅰ-8-4 Ⅰ-8-5 Ⅰ-8-6 Ⅰ-8-7; in, R 11 and R 21 Each of these groups independently represents a fluorine atom, an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, or an alkenyl group having 2-6 carbon atoms, wherein one or more non-adjacent -CH2- groups can be... , , , or Substitution, and one or more of the H atoms can be substituted by fluorine atoms.

[0075] In some specific examples, R 11 and R 21 Each of these terms independently represents an alkyl group having 1-5 carbon atoms, an alkoxy group having 1-5 carbon atoms, or an alkenyl group having 2-5 carbon atoms.

[0076] In some specific examples, the compound represented by Formula I-8-1 is selected from Formulas I-8-1-1 to I-8-1-4. Ⅰ-8-1-1 Ⅰ-8-1-2 Ⅰ-8-1-3 Ⅰ-8-1-4.

[0077] In some specific examples, the compound represented by formula I-8-2 is selected from formulas I-8-2-1 to I-8-2-4. Ⅰ-8-2-1 Ⅰ-8-2-2 Ⅰ-8-2-3 Ⅰ-8-2-4.

[0078] In some specific examples, the compound represented by Formula I-8-3 is selected from Formula I-8-3-1 to I-8-3-4. Ⅰ-8-3-1 Ⅰ-8-3-2 Ⅰ-8-3-3 Ⅰ-8-3-4.

[0079] In some specific examples, the compounds represented by Formula I-8-4 are selected from Formulas I-8-4-1 to I-8-4-4. Ⅰ-8-4-1 Ⅰ-8-4-2 Ⅰ-8-4-3 Ⅰ-8-4-4.

[0080] In some specific examples, the compounds represented by Formula I-8-5 are selected from Formulas I-8-5-1 to I-8-5-4. Ⅰ-8-5-1 Ⅰ-8-5-2 Ⅰ-8-5-3 Ⅰ-8-5-4.

[0081] In some specific examples, the compound represented by Formula I-9 is selected from the compounds represented by Formulas I-9-1 to I-9-2. Ⅰ-9-1 Ⅰ-9-2; Among them, R 11 and R 21Each of these groups independently represents a fluorine atom, an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, or an alkenyl group having 2-6 carbon atoms, wherein one or more non-adjacent -CH2- groups can be... , , , or Substitution, and one or more of the H atoms can be substituted by fluorine atoms.

[0082] In some specific examples, R 11 and R 21 Each of these terms independently represents an alkyl group having 1-5 carbon atoms, an alkoxy group having 1-5 carbon atoms, or an alkenyl group having 2-5 carbon atoms.

[0083] In some specific examples, the compound represented by Formula I-9-1 is selected from Formulas I-9-1-1 to I-9-1-4. Ⅰ-9-1-1 Ⅰ-9-1-2 Ⅰ-9-1-3 Ⅰ-9-1-4.

[0084] In some specific examples, the compounds represented by Formula I-9-2 are selected from Formulas I-9-2-1 to I-9-2-4. Ⅰ-9-2-1 Ⅰ-9-2-2 Ⅰ-9-2-3 Ⅰ-9-2-4.

[0085] Particularly preferred, the compound of formula I is selected from formulas I-1-2, I-1-3, I-1-4, I-1-5, I-2-2, I-2-3, I-2-4, I-2-5, I-2-6, I-2-7, I-3-2, I-3-3, I-3-4, I-3-5, I-4-1, I-4-2, I-4-3, I-4-4, I-4-5, I-4-6. At least one of I-5-1, I-5-2, I-5-3, I-5-4, I-6-1, I-6-2, I-6-3, I-6-4, I-6-5, I-6-6, I-7-1, I-7-2, I-7-3, I-7-4, I-7-5, I-8-1, I-8-2, I-8-3, I-8-4, I-8-5, I-9-1, and I-9-2.

[0086] In some preferred examples, the compound represented by Formula I is selected from at least one of Formulas I-1-2, I-1-3, I-1-4, I-1-5, I-2-2, I-2-4, I-2-6, I-2-7, I-3-2, I-3-3, I-3-4, I-3-5, I-4-1, I-4-3, I-4-5, I-4-6, I-5-1, I-5-2, I-5-3, I-5-4, I-6-1, I-6-2, I-6-3, I-7-1, I-7-2, I-7-3, I-8-1, I-8-2, and I-8-3.

[0087] In the most preferred embodiment, the compounds represented by formulas I-1-4, I-2-6, I-3-4, I-4-5, and I-5-3 have high ε ⊥ When the transmittance of the liquid crystal composition is required to be high, compounds with higher content of formulas I-1-4, I-2-6, I-3-4, I-4-5, and I-5-3 are preferred.

[0088] In some examples, the lower limit content of the compound represented by Formula I in the liquid crystal composition, by mass percentage, is selected from 1%, 2%, and 5%, and the upper limit content of the compound represented by Formula I is selected from 5%, 10%, 15%, 20%, 25%, and 30%.

[0089] In some specific examples, the content of the compound represented by Formula I in the liquid crystal composition, by mass percentage, includes but is not limited to 1-30%, 1-25%, 1-20%, 1-15%, 1-10%, 1-5%, 2-30%, 2-25%, 2-20%, 2-15%, 2-10%, 2-5%, 5-30%, 5-25%, 5-20%, 5-15%, 5-10%, 10-30%, 10-25%, 10-20%, 10-15%, 15-30%, 15-25%, 15-20%, 20-30%, 20-25%, 25-30%, etc.

[0090] In some examples, the compound represented by Formula II is selected from the group consisting of compounds represented by Formulas II-1 to II-18. II-1 II-2 II-3 II-4 II-5 II-6 II-7 II-8 II-9 II-10 II-11 II-12 II-13 II-14 II-15 II-16 II-17 II-18.

[0091] In some examples, the lower limit content of the compound represented by Formula II in the liquid crystal composition, by mass percentage, is selected from 1%, 5%, 10%, 20%, 30%, 40%, 50%, and the upper limit content of the compound represented by Formula II is selected from 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%.

[0092] In some specific examples, the content of the compound represented by Formula II in the liquid crystal composition, by mass percentage, includes, but is not limited to, 1-90%, 1-80%, 1-70%, 1-60%, 1-50%, 1-40%, 1-30%, 1-20%, 10-90%, 10-80%, 10-70%, 10-60%, 10-50%, 10-40%, 10-30%, 20-90%, 20-80%, 20-70%, 20-60%, 30-90%, 30-80%, 30-70%, 40-90%, 40-80%, 40-70%, 50-90%, 50-80%, etc.

[0093] In some more specific examples, the compound represented by formula II-1 is selected from the compounds represented by formulas II-1-1 to II-1-8: II-1-1 Ⅱ-1-2 II-1-3 II-1-4 II-1-5 II-1-6 II-1-7 II-1-8; in, R 31 R 41 Each independently represents an alkyl chain with 1-10 carbon atoms, R 42It represents H or an alkyl chain having 1-10 carbon atoms, wherein one or more unconnected -CH2- groups may optionally be substituted with cyclopropylene, cyclopentylene, cyclopentenylene, or cyclobutylene.

[0094] In some more specific examples, the compound represented by formula II-1-1 is selected from the compounds represented by formulas II-1-1-1 to II-1-1-5: Ⅱ-1-1-1 Ⅱ-1-1-2 II-1-1-3 II-1-1-4 Ⅱ-1-1-5.

[0095] In some specific examples, the compound represented by formula II-1-2 is selected from the compounds represented by formulas II-1-2-1 to II-1-2-5: Ⅱ-1-2-1 Ⅱ-1-2-2 II-1-2-3 II-1-2-4 Ⅱ-1-2-5.

[0096] In some specific examples, the compounds represented by Formula II-1-3 are selected from the compounds represented by Formula II-1-3-1 to II-1-3-4: II-1-3-1 Ⅱ-1-3-2 II-1-3-3 II-1-3-4.

[0097] In some specific examples, the compounds represented by formula III-1-4 are selected from the compounds represented by formulas II-1-4-1 to II-1-4-4: II-1-4-1 Ⅱ-1-4-2 II-1-4-3 Ⅱ-1-4-4.

[0098] In some specific examples, the compounds represented by formula II-1-5 are selected from the compounds represented by formula II-1-5-1 and II-1-5-3: II-1-5-1 II-1-5-2 Ⅱ-1-5-3.

[0099] In some specific examples, the compound represented by formula II-1-6 is selected from the compounds represented by formula II-1-6-1 and II-1-6-2: II-1-6-1 Ⅱ-1-6-2.

[0100] When a high response speed of the liquid crystal composition is required, it is preferable to use compounds with a higher content of formula II-1-3-2. When a high contrast ratio of the liquid crystal composition is required, it is preferable to use compounds with a higher content of formula II-1-4-2, II-1-4-3, II-1-5-3, and II-1-6-2.

[0101] In some examples, the liquid crystal composition contains the following compounds: the compound represented by Formula II-1 has a mass percentage content of 1-80 wt%; the compound represented by Formula II-1-1 has a mass percentage content of 0-15%; the compound represented by Formula II-1-2 has a mass percentage content of 0-15%; the compound represented by Formula II-1-3 has a mass percentage content of 1-60%; the compound represented by Formula II-1-4 has a mass percentage content of 0-30%; the compound represented by Formula II-1-5 has a mass percentage content of 0-12%; and the compound represented by Formula II-1-6 has a mass percentage content of 0-12%.

[0102] In some preferred embodiments, the liquid crystal composition contains 20-70 wt% of the compound represented by Formula II-1, 0-15% of the compound represented by Formula II-1-1, 0-8% of the compound represented by Formula II-1-2, 10-60% of the compound represented by Formula II-1-3, and 5-30% of the compound represented by Formula II-1-4.

[0103] In some examples, the compound represented by formula II-2 is selected from the compounds represented by formulas II-2-1 to II-2-7: II-2-1 Ⅱ-2-2 II-2-3 II-2-4 Ⅱ-2-5 Ⅱ-2-6 Ⅱ-2-7.

[0104] When high low-temperature solubility of the liquid crystal composition is required, it is preferable to use compounds with higher content of formulas II-2-1 and II-2-2. In some preferred examples, the liquid crystal composition contains 0-20 wt% of the compound represented by Formula II-2, particularly preferably 0-15%.

[0105] In some examples, the compound represented by formula II-3 is selected from the compounds represented by formulas II-3-1 to II-3-3: II-3-1 Ⅱ-3-2 II-3-3.

[0106] In some preferred examples, the liquid crystal composition contains 0-20 wt% of the compound represented by Formula II-3, particularly preferably 0-15%.

[0107] In some examples, the compound represented by Formula II-4 is selected from the compounds represented by Formulas II-4-1 to II-4-5: II-4-1 Ⅱ-4-2 II-4-3 II-4-4 II-4-5.

[0108] In some preferred examples, the liquid crystal composition contains 0-10 wt% of the compound represented by Formula II-4, particularly preferably 0-6%.

[0109] In some examples, the compound represented by Formula II-5 is selected from the compounds represented by Formulas II-5-1 to II-5-6: II-5-1 II-5-2 II-5-3 II-5-4 II-5-5 II-5-6.

[0110] In some preferred examples, the liquid crystal composition contains 0-10 wt% of the compound represented by Formula II-5, particularly preferably 0-6%.

[0111] In some examples, the compound represented by Formula II-6 is selected from the compounds represented by Formulas II-6-1 to II-6-5: II-6-1 Ⅱ-6-2 II-6-3 II-6-4 II-6-5; Among them, R 31 R 41 Each independently represents an alkyl chain with 1-10 carbon atoms, R 32 It represents alkenyl groups with 2-10 carbon atoms.

[0112] In some examples, the compound represented by formula II-6-1 is selected from the compounds represented by formulas II-6-1-1 to II-6-1-5: II-6-1-1 Ⅱ-6-1-2 Ⅱ-6-1-3 II-6-1-4 Ⅱ-6-1-5.

[0113] In some examples, the compound represented by formula II-6-2 is selected from the compounds represented by formulas II-6-2-1 to II-6-2-6: Ⅱ-6-2-1 Ⅱ-6-2-2 II-6-2-3 Ⅱ-6-2-4 Ⅱ-6-2-5 Ⅱ-6-2-6.

[0114] In some examples, the compound represented by formula II-6-3 is selected from the compounds represented by formula II-6-3-1 and II-6-3-2: Ⅱ-6-3-1 Ⅱ-6-3-2.

[0115] In some examples, the compound represented by formula II-6-4 is selected from the compounds represented by formulas II-6-4-1 to II-6-4-4: II-6-4-1 Ⅱ-6-4-2 II-6-4-3 Ⅱ-6-4-4.

[0116] In some examples, the compound represented by formula II-6-5 is selected from the compounds represented by formula II-6-5-1 and II-6-5-2. II-6-5-1 Ⅱ-6-5-2.

[0117] In some preferred examples, the compound of formula II-6 is selected from one or more of the group consisting of formulas II-6-3-1, II-6-3-2 and II-6-4-2.

[0118] In some preferred examples, the liquid crystal composition contains 0-30 wt% of the compound represented by Formula II-6.

[0119] In some examples, the compound represented by formula II-7 is selected from the compounds represented by formulas II-7-1 to II-7-7: II-7-1 Ⅱ-7-2 II-7-3 II-7-4 II-7-5 II-7-6 II-7-7; Among them, R 31 R 41 Each independently represents an alkyl chain with 1-10 carbon atoms, R 32 R 42 It represents alkenyl groups with 2-10 carbon atoms.

[0120] In some examples, the compound represented by formula II-7-1 is selected from the compounds represented by formulas II-7-1-1 to II-7-1-6: II-7-1-1 Ⅱ-7-1-2 Ⅱ-7-1-3 II-7-1-4 II-7-1-5 Ⅱ-7-1-6.

[0121] In some examples, the compound represented by formula II-7-2 is selected from the compounds represented by formulas II-7-2-1 to II-7-2-6: II-7-2-1 Ⅱ-7-2-2 Ⅱ-7-2-3 II-7-2-4 Ⅱ-7-2-5 Ⅱ-7-2-6.

[0122] In some examples, the compound represented by formula II-7-3 is selected from the compounds represented by formulas II-7-3-1 to II-7-3-5: II-7-3-1 Ⅱ-7-3-2 II-7-3-3 II-7-3-4 Ⅱ-7-3-5.

[0123] In some examples, the compound represented by formula II-7-4 is selected from the compounds represented by formulas II-7-4-1 to II-7-4-3: II-7-4-1 II-7-4-2 Ⅱ-7-4-3.

[0124] In some examples, the compound represented by formula II-7-5 is selected from the compounds represented by formula II-7-5-1 and II-7-5-2: II-7-5-1 Ⅱ-7-5-2.

[0125] In some examples, the compound represented by formula II-7-6 is selected from the compounds represented by formulas II-7-6-1 to II-7-6-3: II-7-6-1 Ⅱ-7-6-2 Ⅱ-7-6-3.

[0126] In some examples, the compound represented by formula II-7-7 is selected from the compounds represented by formulas II-7-7-1 and II-7-7-2. II-7-7-1 Ⅱ-7-7-2.

[0127] When high contrast and response speed of the liquid crystal composition are required, compounds with higher content of formulas II-7-1-1, II-7-1-2, II-7-1-4, II-7-3-1, II-7-4-1, II-7-6-1, and II-7-7-1 are preferred. At the same time, when a low threshold voltage of the liquid crystal composition is required, compounds with formulas II-7-4-1 and II-7-6-1 are preferred.

[0128] In some preferred examples, the liquid crystal composition contains 0-30 wt% of the compound represented by Formula II-7.

[0129] In some examples, the compound represented by formula II-8 is selected from the compounds represented by formulas II-8-1 to II-8-4. II-8-1 Ⅱ-8-2 Ⅱ-8-3 Ⅱ-8-4.

[0130] In some examples, the liquid crystal composition contains 0-15 wt% of the compound represented by Formula II-8.

[0131] In some examples, the compound represented by formula II-9 is selected from the compounds represented by formulas II-9-1 to II-9-9. Ⅱ-9-1 Ⅱ-9-2 Ⅱ-9-3 Ⅱ-9-4 II-9-5 Ⅱ-9-6 Ⅱ-9-7 Ⅱ-9-8 Ⅱ-9-9.

[0132] Particularly preferably, the compound of formula II-9 is selected from one or more of the group consisting of formulas II-9-1, II-9-7, II-9-8 and II-9-9. More preferably, the mass percentage of the compound represented by Formula II-9 in the liquid crystal composition is 0-20 wt%.

[0133] In some examples, the compound represented by formula II-10 is selected from the compounds represented by formulas II-10-1 to II-10-6: II-10-1 Ⅱ-10-2 II-10-3 II-10-4 II-10-5 Ⅱ-10-6.

[0134] In some examples, the liquid crystal composition contains 0-8 wt% of the compound represented by Formula II-10.

[0135] In some examples, the compound represented by formula II-11 is selected from the compounds represented by formulas II-11-1 to II-11-5: II-11-1 Ⅱ-11-2 II-11-3 II-11-4 Ⅱ-11-5.

[0136] In some examples, the liquid crystal composition contains 0-8 wt% of the compound represented by Formula II-11.

[0137] In some examples, the compound represented by formula II-12 is selected from the compounds represented by formulas II-12-1 to II-12-5: II-12-1 II-12-2 II-12-3 II-12-4 II-12-5.

[0138] In some examples, the liquid crystal composition contains 0-8 wt% of the compound represented by Formula II-12.

[0139] In some examples, the compound represented by formula II-13 is selected from the compounds represented by formulas II-13-1 to II-13-5: II-13-1 II-13-2 II-13-3 II-13-4 II-13-5.

[0140] In some examples, the liquid crystal composition contains 0-8 wt% of the compound represented by Formula II-13.

[0141] In some examples, the compound represented by formula II-14 is selected from the compounds represented by formulas II-14-1 to II-14-5: II-14-1 II-14-2 II-14-3 II-14-4 II-14-5.

[0142] In some examples, the liquid crystal composition contains 0-8 wt% of the compound represented by Formula II-14.

[0143] In some examples, the compound represented by formula II-15 is selected from the compounds represented by formulas II-15-1 to II-15-4: II-15-1 II-15-2 II-15-3 II-15-4.

[0144] In some examples, the liquid crystal composition contains 0-8 wt% of the compound represented by Formula II-15.

[0145] In some examples, the compound represented by formula II-16 is selected from the compounds represented by formulas II-16-1 to II-16-3: II-16-1 II-16-2 Ⅱ-16-3.

[0146] In some examples, the liquid crystal composition contains 0-8 wt% of the compound represented by Formula II-16.

[0147] In some examples, the compound represented by formula II-17 is selected from the compounds represented by formulas II-17-1 to II-17-4: II-17-1 II-17-2 II-17-3 II-17-4.

[0148] In some examples, the liquid crystal composition contains 0-8 wt% of the compound represented by Formula II-17.

[0149] In some examples, the compound represented by formula II-18 is selected from the compounds represented by formulas II-18-1 and II-18-2: II-18-1 Ⅱ-18-2.

[0150] More preferably, the mass percentage of the compound represented by Formula II-18 in the liquid crystal composition is 0-8 wt%.

[0151] In some examples, the compounds represented by Formula III are selected from the group consisting of compounds represented by Formulas III-1 to III-62: Ⅲ-1 Ⅲ-2 Ⅲ-3 Ⅲ-4 Ⅲ-5 Ⅲ-6 Ⅲ-7 Ⅲ-8 Ⅲ-9 Ⅲ-10 Ⅲ-11 Ⅲ-12 Ⅲ-13 Ⅲ-14 Ⅲ-15 Ⅲ-16 Ⅲ-17 Ⅲ-18 Ⅲ-19 Ⅲ-20 Ⅲ-21 Ⅲ-22 Ⅲ-23 Ⅲ-24 Ⅲ-25 Ⅲ-26 Ⅲ-27 Ⅲ-28 Ⅲ-29 Ⅲ-30 Ⅲ-31 Ⅲ-32 Ⅲ-33 Ⅲ-34 Ⅲ-35 Ⅲ-36 Ⅲ-37 Ⅲ-38 Ⅲ-39 Ⅲ-40 Ⅲ-41 Ⅲ-42 Ⅲ-43 Ⅲ-44 Ⅲ-45 Ⅲ-46 Ⅲ-47 Ⅲ-48 Ⅲ-49 Ⅲ-50 Ⅲ-51 Ⅲ-52 Ⅲ-53 Ⅲ-54 Ⅲ-55 Ⅲ-56 Ⅲ-57 Ⅲ-58 Ⅲ-59 Ⅲ-60 Ⅲ-61 Ⅲ-62.

[0152] When a high VHR is required for the liquid crystal composition, compounds of formulas III-2, III-20, III-24, III-33, III-51, and III-55 with high content are preferred; when a high response speed is required for the liquid crystal composition, compounds of formulas III-4, III-9, III-14, III-27, III-28, III-35, III-40, III-45, III-58, and III-59 with high content are preferred.

[0153] In some examples, the lower limit content of the compound represented by Formula III in the liquid crystal composition, by mass percentage, is selected from 0, 1%, 2%, 5%, and the upper limit content of the compound represented by Formula III is selected from 5%, 10%, 15%, 20%, 25%, 30%, 40%.

[0154] In some examples, the content of the compound represented by Formula III in the liquid crystal composition, by mass percentage, includes, but is not limited to, 0, 0-40%, 0-30%, 0-25%, 0-20%, 0-15%, 0-10%, 0-5%, 1-40%, 1-30%, 1-25%, 1-20%, 1-15%, 1-10%, 1-5%, 5-30%, 5-25%, 5-20%, 5-15%, 5-10%, 10-30%, 10-25%, 10-20%, 10-15%, 15-30%, 15-25%, 15-20%, 20-30%, 20-25%, 25-30%, etc.

[0155] In some examples, the compound represented by Formula IV is selected from the group consisting of compounds represented by Formulas IV-1 to IV-27. IV-1 IV-2 IV-3 IV-4 IV-5 IV-6 IV-7 IV-8 IV-9 IV-10 IV-11 IV-12 IV-13 IV-14 IV-15 IV-16 IV-17 IV-18 IV-19 IV-20 IV-21 IV-22 IV-23 IV-24 IV-25 IV-26 IV-27.

[0156] In some examples, the lower limit content of the compound represented by Formula IV in the liquid crystal composition, by mass percentage, is selected from 0, 0.05%, 0.1%, 1%, 2%, 5%, 10%, 15%, and the upper limit content of the compound represented by Formula IV is selected from 5%, 10%, 15%, 20%, 25%, 30%.

[0157] In some examples, the content of the compound represented by Formula IV in the liquid crystal composition, by mass percentage, includes, but is not limited to, 0, 0.05-30%, 0.05-25%, 0.05-20%, 0.05-15%, 0.05-10%, 0.05-5%, 0.1-30%, 0.1-25%, 0.1-20%, 0.1-15%, 0.1-10%, 0.1-5%, 2-30%, 2-25%, 2-20%, 2-15%, 2-10%, 2-5%, 5-30%, 5-25%, 5-20%, 5-15%, 5-10%, 10-30%, 10-25%, 10-20%, 10-15%, 15-30%, 15-25%, 15-20%, 20-30%, 20-25%, 25-30%, etc.

[0158] In the technical solution of the present invention, the amount of the compound shown in Formula III and the compound shown in Formula IV added to the liquid crystal composition is not both 0.

[0159] In some examples, the content of the third component in the liquid crystal composition is 0.05-70% by mass percentage.

[0160] In some preferred examples, the liquid crystal composition comprises, by weight percentage: 1-30% of the first component, 1-90% of the second component, and 0.05-70% of the third component.

[0161] In some more preferred examples, the liquid crystal composition comprises, by weight percentage: 1) 1-15% of the compound shown in Formula I; 2) 50-90% of the compounds shown in Formula II; and 3) 1-30% of the compound shown in Formula III and / or 0.1-20% of the compound shown in Formula IV.

[0162] In some examples, the liquid crystal composition further comprises one or more compounds of formula V. V in, express or ; express , or ; R7 represents an alkyl group with 1-10 carbon atoms or an alkenyl group with 2-10 carbon atoms, and R8 represents an alkyl group with 1-10 carbon atoms, an alkoxy group with 1-10 carbon atoms, or an alkenyl group with 2-10 carbon atoms. p represents 0 or 1.

[0163] In some examples, the compound of formula V is selected from the group consisting of compounds of formulas V-1 to V-6: V-1 V-2 V-3 V-4 V-5 V-6 in, R 71 R 81 Each can independently represent an alkyl chain with 1-10 carbon atoms; R 82 It represents alkenyl groups with 2-10 carbon atoms.

[0164] In some examples, the compound shown in formula V-1 is selected from the compounds shown in formulas V-1-1 and V-1-2: V-1-1 V-1-2.

[0165] In some examples, the liquid crystal composition contains 0-8 wt% of the compound represented by Formula V-1.

[0166] In some examples, the compound shown in formula V-2 is selected from the compounds shown in formulas V-2-1 and V-2-2: V-2-1 V-2-2.

[0167] In some examples, the mass percentage of the compound represented by Formula V-2 in the liquid crystal composition is 0-20 wt%.

[0168] In some examples, the compound shown in Formula V-5 is selected from the compounds shown in Formulas V-5-1 to V-5-6: V-5-1 V-5-2 V-5-3 V-5-4 V-5-5 V-5-6.

[0169] In some examples, the mass percentage of the compound represented by formula V-5 in the liquid crystal composition is 0-20 wt%.

[0170] In some examples, the compound shown in Formula V-6 is selected from the compounds shown in Formulas V-6-1 to V-6-3: V-6-1 V-6-2 V-6-3.

[0171] In some examples, the liquid crystal composition contains 0-25 wt% of the compound represented by formula V-6.

[0172] When high transmittance or response time of the liquid crystal composition is required, it is preferable to use a higher content of the compound shown in Formula V.

[0173] In some examples, the liquid crystal composition further comprises one or more compounds of formula VI. VI in, express , or ; R9 indicates an alkyl chain with 1-10 carbon atoms; q represents 1 or 2. When q represents 2, Same or different.

[0174] In some examples, the compound represented by formula VI is selected from the compounds represented by formulas VI-1 to VI-3: VI-1 VI-2 VI-3.

[0175] When a high threshold voltage is required for the liquid crystal composition, it is preferable to use a higher content of the compound shown in Formula VI.

[0176] In some preferred examples, the liquid crystal composition contains 0-20 wt% of the compound represented by Formula VI.

[0177] In some examples, the liquid crystal composition further comprises one or more compounds of formula VII and / or formula VIII. VII; VIII; in, , Each represents independently , , , , , , or , One or more H atoms can be replaced by F or Cl; R 10 R 15 Each of the following can independently represent an alkyl group having 1-10 carbon atoms, an alkenyl group having 2-10 carbon atoms, or an alkoxy group having 1-10 carbon atoms, wherein one or more unconnected -CH2- groups may optionally be substituted with cyclopropyl, cyclopentyl, or cyclobutyl, and any one or more hydrogen atoms may optionally be substituted with fluorine atoms. R 11 R 12 R 13 R 14 R 16 R 17 R 18 Each of the following can independently represent H, an alkyl group having 1-10 carbon atoms, an alkoxy group having 1-10 carbon atoms, or an alkenyl group having 2-10 carbon atoms, wherein any one or more hydrogen atoms may optionally be substituted with fluorine atoms; W1 and W2 each independently represent -O- or -S-; x and y can each independently represent 1, 2, or 3. When x represents 2 or 3, Whether they are the same or different, when y represents 2 or 3, Same or different.

[0178] In some examples, the compound represented by formula VII is selected from the group consisting of the compounds represented by formulas VII-1 to VII-22: VII-1 VII-2 VII-3 VII-4 VII-5 VII-6 VII-7 VII-8 VII-9 VII-10 VII-11 VII-12 VII-13 VII-14 VII-15 VII-16 VII-17 VII-18 VII-19 VII-20 VII-21 VII-22; in, R 101 This refers to alkyl groups with 1-10 carbon atoms.

[0179] In some examples, the lower limit content of the compound represented by Formula VII in the liquid crystal composition, by mass percentage, is selected from 0, 1%, 2%, 5%, 10%, and the upper limit content of the compound represented by Formula VII is selected from 5%, 10%, 15%, 20%, 30%.

[0180] In some examples, the content of the compound represented by formula VII in the liquid crystal composition, by mass percentage, includes, but is not limited to, 0, 1-30%, 1-20%, 1-15%, 1-10%, 1-5%, 2-30%, 2-20%, 2-15%, 2-10%, 2-5%, 5-30%, 5-20%, 5-15%, 5-10%, 10-30%, 10-20%, 10-15%, 15-20%, 15-30%, 20-30%, etc.

[0181] In some examples, the compound represented by formula VIII is selected from the group consisting of the compounds represented by formulas VIII-1 to VIII-11: VIII-1 VIII-2 VIII-3 VIII-4 VIII-5 VIII-6 VIII-7 VIII-8 VIII-9 VIII-10 VIII-11; in, R 151 R 161 R 171 Each independently represents an alkyl chain with 1-10 carbon atoms, R 162 It represents an alkenyl group with 2-10 carbon atoms.

[0182] In some examples, the lower limit content of the compound represented by Formula VIII in the liquid crystal composition, by mass percentage, is selected from 0, 1%, 2%, 5%, 10%, and the upper limit content of the compound represented by Formula VIII is selected from 5%, 10%, 15%, 20%, 30%.

[0183] In some examples, the content of the compound represented by formula VIII in the liquid crystal composition, by mass percentage, includes, but is not limited to, 0, 1-30%, 1-20%, 1-15%, 1-10%, 1-5%, 2-30%, 2-20%, 2-15%, 2-10%, 2-5%, 5-30%, 5-20%, 5-15%, 5-10%, 10-30%, 10-20%, 10-15%, 15-20%, 15-30%, 20-30%, etc.

[0184] In some examples, the liquid crystal composition further comprises one or more compounds of formula IX: IX in, R 19 The denominator represents an alkyl group having 1-10 carbon atoms, an alkenyl group having 2-10 carbon atoms, or an alkoxy group having 1-10 carbon atoms, wherein one or more unconnected -CH2- atoms may optionally be substituted with cyclopropyl, cyclopentyl, or cyclobutyl, and any one or more hydrogen atoms may optionally be substituted with fluorine atoms.

[0185] In some examples, the lower limit content of the compound represented by formula IX in the liquid crystal composition is selected from 0, 1%, 2%, and 5% by mass percentage, and the upper limit content of the compound represented by formula VIII is selected from 5%, 10%, and 15%.

[0186] In some examples, the liquid crystal composition further comprises one or more compounds of formula X and / or compounds of formula XI: X XI in, express , or ; and Each represents independently , , , or ; R 20 R 21 R 22 R23 Each of the following can independently represent an alkyl group having 1-10 carbon atoms, an alkenyl group having 2-10 carbon atoms, or an alkoxy group having 1-10 carbon atoms, wherein one or more unconnected -CH2- groups may optionally be substituted with cyclopropyl, cyclopentyl, or cyclobutyl, and any one or more hydrogen atoms may optionally be substituted with fluorine atoms. Z3 and Z4 represent single bonds, -CH2CH2-, -CH=CH-, -CH2O-, -OCH2-, -COO-, or -OCO-; W3 represents -O-, -S-, -CH2O-, or -CH=CH-; s represents 0, 1, or 2. When s represents 2, Each is independently the same or different; when s represents 2, Z3 is independently the same or different.

[0187] t and u can each independently represent 0, 1, or 2; when t represents 2, Each is independently the same or different; when t represents 2, Z4 is independently the same or different; when u represents 2, They are either the same or different independently.

[0188] In some examples, the compound represented by formula X is selected from the group consisting of compounds represented by formulas X-1 to X-11: X-1 X-2 X-3 X-4 X-5 X-6 X-7 X-8 X-9 X-10 X-11.

[0189] In some examples, the compound represented by formula XI is selected from the group consisting of compounds represented by formulas XI-1 to XI-16: XI-1 XI-2 XI-3 XI-4 XI-5 XI-6 XI-7 XI-8 XI-9 XI-10 XI-11 XI-12 XI-13 XI-14 XI-15 XI-16.

[0190] In some examples, the lower limit content of the compound represented by Formula X in the liquid crystal composition, by mass percentage, is selected from 0, 1%, 2%, 5%, 10%, and the upper limit content of the compound represented by Formula X is selected from 5%, 10%, 15%.

[0191] In some examples, by mass percentage, the lower limit content of the compound represented by Formula XI in the liquid crystal composition is selected from 0, 1%, 2%, 5%, 10%, and the upper limit content of the compound represented by Formula XI is selected from 5%, 10%, 15%, 20%, 25%.

[0192] Various functional additives may be added to the liquid crystal composition provided in this embodiment, wherein the mass percentage of each additive is relative to the total mass of all liquid crystal compounds excluding the additives. The mass percentage of exemplary additives is preferably between 0.01-2 wt%. These additives are mainly chiral agents, antioxidants, light stabilizers, polymerizable monomers, self-aligning agents, etc.

[0193] Exemplary antioxidant and light stabilizer additives are selected from the following compounds:

[0194] .

[0195] Exemplary polymerizable monomer additives are selected from the following compounds:

[0196]

[0197] .

[0198] According to yet another embodiment of the present invention, a liquid crystal display element is provided, comprising a liquid crystal panel as described in the first embodiment above.

[0199] According to another specific embodiment of the present invention, a liquid crystal display is provided, including a liquid crystal panel as described in the first specific embodiment above.

[0200] Example The technical solution of the present invention will be described below with reference to some specific embodiments.

[0201] In this invention, the preparation methods are all conventional unless otherwise specified, and the raw materials used can be obtained from publicly available commercial sources unless otherwise specified. The reaction process is generally monitored by TLC. The post-reaction treatment generally includes water washing, extraction, drying after combining organic phases, solvent removal under reduced pressure, recrystallization, and column chromatography. Those skilled in the art can implement this invention according to the following description.

[0202] All percentages in this instruction manual refer to mass percentages, and temperatures are in degrees Celsius (°C). The specific meanings of other symbols and test conditions are as follows: Tni represents the liquid crystal clearing point (°C), measured by DSC quantitative method; Δn represents optical anisotropy, Δn = n e -n o , where n o Let n be the refractive index of ordinary light. e The refractive index of unusual light was measured at 25±2℃, 589nm, using an Abbe refractometer. Δε represents dielectric anisotropy, Δε = ε ∥ -ε ⊥ , where ε ∥ ε is the dielectric constant parallel to the molecular axis. ⊥ The dielectric constant is perpendicular to the molecular axis. The test conditions are 25±0.5℃, 20-micron vertical or parallel cell, and INSTEC:ALCT-IR1 test. γ1 represents rotational viscosity (mPa·s), and the test conditions are 25±0.5℃, 20-micron vertical or parallel cell, INSTEC:ALCT-IR1 test; K 11 K is the elastic constant of the development. 33 The bending elastic constant is determined by the following test conditions: 25℃, INSTEC:ALCT-IR1, and a 20-micron vertical or parallel box. Low-temperature observation conditions: Pour 1g of liquid crystal into a 5ml clean glass bottle, seal the bottle and place it in a -20℃ low-temperature freezer. Observe whether crystal precipitation occurs in the liquid crystal every 24 hours, and observe for 240 hours. The preparation method of the liquid crystal composition is as follows: Weigh each liquid crystal monomer according to a certain ratio and put it into a stainless steel beaker. Place the stainless steel beaker containing each liquid crystal monomer on a magnetic stirrer and heat it to melt. After most of the liquid crystal monomer in the stainless steel beaker has melted, add a magnetic rotor to the stainless steel beaker and stir the mixture evenly. After cooling to room temperature, the liquid crystal composition is obtained.

[0203] VHR represents the voltage hold-up rate (%). The test conditions were 60±1℃, ±5V, pulse width 10ms, and voltage hold-up time 16.67ms. The test equipment was a TOYO Model 6254 LCD performance comprehensive tester. VHR-1: Data obtained from testing a pre-filled liquid crystal test piece without any pretreatment; VHR-2: This is the VHR value obtained by irradiating a liquid crystal-filled wafer with 10J of ultraviolet light at room temperature. VHR-3: The VHR value obtained by placing the liquid crystal-filled wafer in a high-temperature oven at 120°C on a backlight and applying power for 72 hours; Flicker: The flicker of V100 is indicated by the following test conditions: 25℃±0.5℃, FFS test box, DMS-501 test equipment, and the unit is dB. The smaller the value, the less flickering the flicker.

[0204] The liquid crystal monomer structure in the embodiments of the present invention is represented by code. The code representation methods of liquid crystal ring structure, end group and linking group are shown in Table 1 and Table 2 below.

[0205] Table 1. Corresponding codes for ring structures

[0206] Table 2. Correspondence codes between terminal groups and linking groups

[0207] For example: Its code is COY-3-O2; Its code is PP-5-3; Its code is CY-3-O2; Its code is CC-Cp-V1; Its code is PGP-Cpr1-2; Its code is PGBf-3-5F,6F; Its code is PUTh-3-1[~1]; Its code is ThG[~F]Th-2-2; Its code is ThUTh-3-1[~1].

[0208] In this embodiment, the compounds and intermediates of Formula I and its sub-formulas can be prepared in a manner similar to those known to those skilled in the art and described in standard works of organic chemistry (e.g., in Houben-Weyl, Methods of Organic Chemistry, Thieme-Verlag, Stuttgart).

[0209] The compound shown in Formula I mentioned in this embodiment is obtained by selectively brominating thiophene boric acid with fluorine-substituted p-chlorobromobenzene under palladium-containing catalyst conditions to obtain a chlorinated intermediate, which is then coupled with the corresponding thiophene boric acid compound under palladium-containing catalyst conditions to obtain the compound shown in Formula I.

[0210] Synthesis Example 1 This embodiment provides a liquid crystal compound I-1-2-12, the structure of which and its synthetic route are as follows: Ⅰ-1-2-12

[0211] Step 1: In a three-necked flask, 18.5 g (0.088 mol) of 2-fluoro-4-bromochlorobenzene, 15 g (0.088 mol) of 5-propylthiophene-2-boronic acid, 11.2 g (0.106 mol) of anhydrous sodium carbonate, 200 mL of tetrahydrofuran, and 60 mL of water were added sequentially. The mixture was stirred thoroughly and purged with nitrogen three times. Then, tetra(triphenylphosphine)palladium (0.51 g, 0.44 mmol) was added, and the mixture was refluxed for 12 hours. After the reaction was complete, 200 mL of water was added and stirred thoroughly. The mixture was extracted with 3 × 150 mL of ethyl acetate, and the organic layers were combined. The organic layers were washed with 200 mL of water and 100 mL of saturated brine. The organic layers were dried with anhydrous sodium sulfate, and the solvent was removed by rotary evaporation to obtain crude intermediate 1. The crude product was recrystallized from 3 times the amount of ethanol and filtered under vacuum at -20 °C to obtain white solid intermediate 1 (18 g, 0.071 mol).

[0212] Step 2: In a three-necked flask, intermediate 1 (18 g, 0.071 mol), 5-ethylthiophene-2-boronic acid (11.1 g, 0.071 mol), anhydrous sodium carbonate (9 g, 0.085 mol), 180 mL tetrahydrofuran, and 60 mL water were added sequentially. The mixture was stirred thoroughly and purged with nitrogen three times. Then, Sphos Pd-G2 catalyst (0.05 g, 0.071 mmol) was added, and the mixture was refluxed for 8 hours. After the reaction was complete, 200 mL of water was added and stirred thoroughly. The mixture was extracted with 3 × 150 mL ethyl acetate, and the organic layers were combined. The organic layers were washed with 200 mL of water and 100 mL of saturated brine. The organic layers were dried with anhydrous sodium sulfate, and the solvent was removed by rotary evaporation to obtain the crude product. The crude product was recrystallized four times with 1 part toluene and 2 parts ethanol to obtain a white solid I-1-2-12 (13.5 g) with a GC purity of 99.91%.

[0213] The mass spectrum of compound I-1-2-12 is as follows Figure 1 As shown.

[0214] Synthesis Example 2 This embodiment provides a liquid crystal compound I-1-3-11, the structure of which and its synthetic route are as follows: Ⅰ-1-3-11

[0215] Step 1: In a three-necked flask, 30 g (0.132 mol) of 2,6-difluoro-4-bromochlorobenzene, 22.4 g (0.132 mol) of 5-propylthiophene-2-boric acid, 16.7 g (0.158 mol) of anhydrous sodium carbonate, 200 mL of tetrahydrofuran, and 70 mL of water were added sequentially. The mixture was stirred thoroughly and purged with nitrogen three times. Then, tetra(triphenylphosphine)palladium (0.76 g, 0.66 mmol) was added, and the mixture was refluxed for 12 hours. After the reaction was complete, 200 mL of water was added and stirred thoroughly. The mixture was extracted with 3 × 150 mL of ethyl acetate, and the organic layers were combined. The organic layers were washed with 200 mL of water and 100 mL of saturated brine. The organic layers were dried with anhydrous sodium sulfate, and the solvent was removed by rotary evaporation to obtain crude intermediate 1. The crude product was recrystallized from 3 times the amount of ethanol to obtain white solid intermediate 1 (28 g, 0.103 mol).

[0216] Step 2: In a three-necked flask, intermediate 1 (10 g, 0.037 mol), 5-methylthiophene-2-boric acid (5.3 g, 0.037 mol), anhydrous sodium carbonate (4.7 g, 0.044 mol), 100 mL tetrahydrofuran, and 35 mL water were added sequentially. The mixture was stirred thoroughly and purged with nitrogen three times. Then, Sphos Pd-G2 catalyst (0.03 g, 0.037 mmol) was added, and the mixture was refluxed for 8 hours. After the reaction was complete, 150 mL of water was added and stirred thoroughly. The mixture was extracted with 3 × 100 mL ethyl acetate, and the organic layers were combined. The organic layers were washed with 100 mL of water and 100 mL of saturated brine. The organic layers were dried with anhydrous sodium sulfate, and the solvent was removed by rotary evaporation to obtain the crude product. The crude product was recrystallized twice with 1 part n-heptane and 3 parts ethanol to obtain a white solid I1-3-11 (6.5 g) with a GC purity of 99.93%.

[0217] Following the preparation method of compound I-1-3-11, compound I-1-3-12 was prepared by simply replacing the raw materials.

[0218] The mass spectrum of compound I-1-3-12 is as follows Figure 2 As shown.

[0219] Synthesis Example 3 This embodiment provides a liquid crystal compound I-1-4-2, the structure of which and its synthetic route are as follows: Ⅰ-1-4-2

[0220] In a three-necked flask, 1,4-dibromo-2,3-difluorobenzene (10 g, 0.037 mol), 5-ethylthiophene-2-boric acid (12.2 g, 0.078 mol), anhydrous sodium carbonate (9.4 g, 0.089 mol), 100 mL tetrahydrofuran, and 30 mL water were added sequentially. The mixture was stirred thoroughly and purged with nitrogen three times. Then, tetra(triphenylphosphine)palladium catalyst (0.43 g, 0.37 mmol) was added, and the mixture was refluxed for 8 hours. After the reaction was complete, 100 mL of water was added and the mixture was stirred thoroughly. The mixture was extracted with 3 × 100 mL ethyl acetate, and the organic layers were combined. The organic layers were washed with 200 mL of water and 100 mL of saturated brine. The organic layers were dried with anhydrous sodium sulfate, and the solvent was removed by rotary evaporation to obtain the crude product. The crude product was recrystallized three times with 1 part toluene and 2 parts ethanol to obtain a white solid I-1-4-2 (8.6 g) with a GC purity of 99.85%.

[0221] The mass spectrum of compound I-1-4-2 is as follows Figure 3 As shown.

[0222] It should be noted that in the examples and comparative examples of the liquid crystal compositions described below, the content of the compounds shown in Formulas I to XI is based on the total mass of the compounds shown in Formulas I to XI; the content of the compound shown in Formula T is based on the total amount of the compounds shown in Formulas I to XI.

[0223] Example 1 The formulation and physical properties of the liquid crystal composition in Example 1 are shown in Table 3 below.

[0224] Table 3 Formulation and physical properties of the liquid crystal composition in Example 1

[0225] Example 2 The formulation and physical properties of the liquid crystal composition in Example 2 are shown in Table 4 below.

[0226] Table 4 Formulation and physical properties of the liquid crystal composition in Example 2

[0227] Example 3 The formulation and physical properties of the liquid crystal composition in Example 3 are shown in Table 5 below.

[0228] Table 5 Formulation and physical properties of the liquid crystal composition in Example 3

[0229] Example 4 The formulation and physical properties of the liquid crystal composition in Example 4 are shown in Table 6 below.

[0230] Table 6 Formulation and physical properties of the liquid crystal composition in Example 4

[0231] Example 5 The formulation and physical properties of the liquid crystal composition in Example 5 are shown in Table 7 below.

[0232] Table 7 Formulation and physical properties of the liquid crystal composition in Example 5

[0233] Example 6 The formulation and physical properties of the liquid crystal composition in Example 6 are shown in Table 8 below.

[0234] Table 8 Formulation and physical properties of the liquid crystal composition in Example 6

[0235] Example 7 The formulation and physical properties of the liquid crystal composition in Example 7 are shown in Table 9 below.

[0236] Table 9 Formulation and physical properties of the liquid crystal composition in Example 7

[0237] Example 8 The formulation and physical properties of the liquid crystal composition in Example 8 are shown in Table 10 below.

[0238] Table 10 Formulation and physical properties of the liquid crystal composition in Example 8

[0239] Example 9 The formulation and physical properties of the liquid crystal composition in Example 9 are shown in Table 11 below.

[0240] Table 11 Formulation and physical properties of the liquid crystal composition in Example 9

[0241] Example 10 The formulation and physical properties of the liquid crystal composition in Example 10 are shown in Table 12 below.

[0242] Table 12 Formulation and physical properties of the liquid crystal composition in Example 10

[0243] Example 11 The formulation and physical properties of the liquid crystal composition in Example 11 are shown in Table 13 below.

[0244] Table 13 Formulation and physical properties of the liquid crystal composition in Example 11

[0245] Example 12 The formulation and physical properties of the liquid crystal composition in Example 12 are shown in Table 14 below.

[0246] Table 14 Formulation and physical properties of the liquid crystal composition in Example 12

[0247] Example 13 The formulation and physical properties of the liquid crystal composition in Example 13 are shown in Table 15 below.

[0248] Table 15 Formulation and physical properties of the liquid crystal composition in Example 13

[0249] Example 14 The formulation and physical properties of the liquid crystal composition in Example 14 are shown in Table 16 below.

[0250] Table 16 Formulation and physical properties of the liquid crystal composition in Example 14

[0251] Example 15 The formulation and physical properties of the liquid crystal composition in Example 15 are shown in Table 17 below.

[0252] Table 17 Formulation and physical properties of the liquid crystal composition in Example 15

[0253] Example 16 The formulation and physical properties of the liquid crystal composition in Example 16 are shown in Table 18 below.

[0254] Table 18 Formulation and physical properties of the liquid crystal composition in Example 16

[0255] Example 17 The formulation and physical properties of the liquid crystal composition in Example 17 are shown in Table 19 below.

[0256] Table 19 Formulation and physical properties of the liquid crystal composition in Example 17

[0257] Example 18 The formulation and physical properties of the liquid crystal composition in Example 18 are shown in Table 20 below.

[0258] Table 20 Formulation and physical properties of the liquid crystal composition in Example 18

[0259] Example 19 The formulation and physical properties of the liquid crystal composition in Example 19 are shown in Table 21 below.

[0260] Table 21 Formulation and physical properties of the liquid crystal composition in Example 19

[0261] Comparative Example 1 The formulation and physical properties of the liquid crystal composition of Comparative Example 1 are shown in Table 22 below.

[0262] Table 22 Comparative Example 1 Liquid Crystal Composition Formulation and Physical Properties

[0263] Comparative Example 2 The formulation and physical properties of the liquid crystal composition of Comparative Example 2 are shown in Table 23 below.

[0264] Table 23 Comparative Example 2: Liquid Crystal Composition Formulation and Physical Properties

[0265] Table 24 Comparison of physical properties, VHR, and Flicker of Examples 1-19 and Comparative Examples 1-2

[0266] Table 24 compares the physical properties, VHR, and Flicker performance of the examples and comparative examples.

[0267] By comparing Examples 1-19 with Comparative Examples 1-2, it can be seen that the technical solution disclosed in this invention has a smaller γ1 and a lower γ1 / K. 11 Better low-temperature solubility, VHR comparable to existing technologies, and excellent flicker performance.

[0268] By comparing the ε of Example 17 and Example 18 ⊥ The ε / Δε values ​​indicate that the liquid crystal composition containing I-1-4-2 has a higher ε than the liquid crystal composition containing I-1-3-12. ⊥ / Δε, thus the liquid crystal display prepared from the liquid crystal composition shown in Example 17 has higher transmittance.

[0269] By comparing Example 7 and Comparative Example 1, it can be seen that the composition containing the compound shown in Formula I has lower γ1 and γ1 / K compared with the prior art. 11 The display prepared from the liquid crystal composition shown in Example 7 has a VHR level comparable to that of the prior art and superior flicker performance, thus exhibiting a faster response speed, a retention level comparable to that of the prior art, and superior flicker performance.

[0270] As can be seen from the comparison between Example 7 and Comparative Example 2, the liquid crystal composition containing the compound shown in Formula I has lower γ1 and γ1 / K compared with the prior art. 11 The display prepared from the liquid crystal composition shown in Example 7 has a faster response speed, image retention level comparable to the prior art, superior flicker performance, and better low-temperature dissolution performance, resulting in a VHR level comparable to the prior art, superior flicker performance, and a wider temperature application range.

[0271] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A liquid crystal composition, characterized in that, The liquid crystal composition contains: The first component is selected from one or more compounds shown in Formula I. Ⅰ in, R1 and R2 each independently represent a fluorine atom, an alkyl group with 1-10 carbon atoms, an alkoxy group with 1-10 carbon atoms, or an alkenyl or alkenoxy group with 2-10 carbon atoms, wherein one or more non-adjacent -CH2- can be -C≡C-, -CH=CH, -CF2O-, -OCF2-, -O-, -CO-O-, -O-CO-, , , , or The O atoms are replaced in a manner that prevents them from being directly connected to each other, and one or more H atoms can be replaced by fluorine atoms; , Each represents independently or ; , Each represents independently , or One or more H atoms can be replaced by F atoms; L1 and L2 each independently represent a hydrogen atom, a fluorine atom, an alkyl group having 1-10 carbon atoms, an alkoxy group having 1-10 carbon atoms, or an alkenyl or alkenoxy group having 2-10 carbon atoms, wherein any one or more unconnected -CH2- can be replaced by -O-, -CO-, -CH2O-, -OCH2-, -COO-, or -OOC- in such a way that the O atoms are not directly connected to each other, and one or more H atoms can be replaced by a fluorine atom; n represents 0, 1, or 2; When n represents 2, Same or different; The second component is selected from one or more compounds shown in Formula II. Ⅱ in, R3 and R4 represent alkyl groups having 1-10 carbon atoms, alkoxy groups having 1-10 carbon atoms, or alkenyl groups having 2-10 carbon atoms, wherein one or more unconnected -CH2- atoms may optionally be substituted with cyclopropylene, cyclopentylene, cyclopentenylene, or cyclobutylene, and wherein one or more H atoms may be substituted with F. express , , or ; express , , , or ; m represents 0, 1, or 2. When m represents 2... Same or different; Z1 represents a single bond, -COO-, -CH=CH-, or -C≡C-; and The third component is selected from one or more compounds shown in Formula III and Formula IV. Ⅲ Ⅳ R5 and R6 each independently represent an alkyl group having 1-10 carbon atoms, an alkenyl group having 2-10 carbon atoms, or an alkoxy group having 1-10 carbon atoms, wherein one or more unconnected -CH2- groups may optionally be substituted with cyclopropyl, cyclopentyl, or cyclobutyl, and any one or more hydrogen atoms may optionally be substituted with fluorine atoms. and Each represents independently , , , , , , , , or ; express , , , or ; express , , , , or ; X1 and X2 each independently represent H or F; Z2 represents a single bond, -CH2CH2-, -CH2O-, -OCH2-, -COO-, or -OCO-; 'a' represents 1, 2, or 3; when 'a' represents 2 or 3... They are either the same or different independently; b represents 1 or 2; when b represents 2... They are either the same or different independently; c represents 1, 2, or 3. When c represents 2 or 3... They are either the same or different independently; d represents 0 or 1; Y1 and Y2 independently represent H, F, -OCF3, -CF3, -CF=CF2, -OCHF2, -OCHFCF3, -OCF=CF2 or Cl.

2. The liquid crystal composition according to claim 1, characterized in that, L1 and L2 independently represent hydrogen atoms, fluorine atoms, alkyl groups with 1-6 carbon atoms, alkoxy groups with 1-6 carbon atoms, alkenyl or alkenoxy groups with 2-6 carbon atoms; and / or , Each represents independently , , , , , , , or .

3. The liquid crystal composition according to claim 1, characterized in that, The compound represented by Formula I is selected from the following compounds: Ⅰ-1 Ⅰ-2 Ⅰ-3 Ⅰ-4 Ⅰ-5 Ⅰ-6 Ⅰ-7 Ⅰ-8 Ⅰ-9 in, L 11 L 21 Each of the following can independently represent a fluorine atom, an alkyl group having 1-3 carbon atoms, an alkoxy group having 1-3 carbon atoms, or an alkenyl group having 2-3 carbon atoms, and one or more of the H atoms may be substituted by a fluorine atom; express , , , , or ; express , , , , , or ; When n=2, Same or different.

4. The liquid crystal composition according to claim 3, characterized in that, The compound represented by Formula I is selected from the following compounds: Ⅰ-1-2 Ⅰ-1-3 Ⅰ-1-4 Ⅰ-1-5 Ⅰ-2-2 Ⅰ-2-3 Ⅰ-2-4 Ⅰ-2-5 Ⅰ-2-6 Ⅰ-2-7 Ⅰ-3-2 Ⅰ-3-3 Ⅰ-3-4 Ⅰ-3-5 Ⅰ-4-1 Ⅰ-4-2 Ⅰ-4-3 Ⅰ-4-4 Ⅰ-4-5 Ⅰ-4-6 Ⅰ-5-1 Ⅰ-5-2 Ⅰ-5-3 Ⅰ-5-4 Ⅰ-6-1 Ⅰ-6-2 Ⅰ-6-3 Ⅰ-6-4 Ⅰ-6-5 Ⅰ-6-6 Ⅰ-7-1 Ⅰ-7-2 Ⅰ-7-3 Ⅰ-7-4 Ⅰ-7-5 Ⅰ-8-1 Ⅰ-8-2 Ⅰ-8-3 Ⅰ-8-4 Ⅰ-8-5 Ⅰ-9-1 Ⅰ-9-2 in, R 11 and R 21 Each of these groups independently represents a fluorine atom, an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, or an alkenyl group having 2-6 carbon atoms, wherein one or more non-adjacent -CH2- groups can be... , , , or Substitution, and one or more of the H atoms can be substituted by fluorine atoms.

5. The liquid crystal composition according to claim 1, characterized in that, The liquid crystal composition further comprises one or more compounds of formula V. Ⅴ in, express or ; express , or ; R7 represents an alkyl group with 1-10 carbon atoms or an alkenyl group with 2-10 carbon atoms, and R8 represents an alkyl group with 1-10 carbon atoms, an alkoxy group with 1-10 carbon atoms, or an alkenyl group with 2-10 carbon atoms. p represents 0 or 1.

6. The liquid crystal composition according to claim 1, characterized in that, The liquid crystal composition further comprises one or more compounds of formula VI and / or one or more compounds of formula VII and / or compounds of formula VIII. Ⅵ； Ⅶ； Ⅷ； in, express , or ; , Each represents independently , , , , , , or , One or more H atoms can be replaced by F or Cl; R9 indicates an alkyl chain with 1-10 carbon atoms; R 10 R 15 Each of the following can independently represent an alkyl group having 1-10 carbon atoms, an alkenyl group having 2-10 carbon atoms, or an alkoxy group having 1-10 carbon atoms, wherein one or more unconnected -CH2- groups may optionally be substituted with cyclopropyl, cyclopentyl, or cyclobutyl, and any one or more hydrogen atoms may optionally be substituted with fluorine atoms. R 11 R 12 R 13 R 14 R 16 R 17 R 18 Each of the following can independently represent H, an alkyl group having 1-10 carbon atoms, an alkoxy group having 1-10 carbon atoms, or an alkenyl group having 2-10 carbon atoms, wherein any one or more hydrogen atoms may optionally be substituted with fluorine atoms; W1 and W2 each independently represent -O- or -S-; q represents 1 or 2. When q represents 2, Same or different; x and y can each independently represent 1, 2, or 3. When x represents 2 or 3, Whether they are the same or different, when y represents 2 or 3, Same or different.

7. The liquid crystal composition according to claim 1, characterized in that, The compound represented by Formula II is selected from the group consisting of compounds represented by Formulas II-1 to II-18. Ⅱ-1 Ⅱ-2 Ⅱ-3 Ⅱ-4 Ⅱ-5 Ⅱ-6 Ⅱ-7 Ⅱ-8 Ⅱ-9 Ⅱ-10 Ⅱ-11 Ⅱ-12 Ⅱ-13 Ⅱ-14 Ⅱ-15 Ⅱ-16 Ⅱ-17 Ⅱ-18。 8. The liquid crystal composition according to claim 1, characterized in that, The compound represented by Formula III is selected from the group consisting of compounds represented by Formulas III-1 to III-62. Ⅲ-1 Ⅲ-2 Ⅲ-3 Ⅲ-4 Ⅲ-5 Ⅲ-6 Ⅲ-7 Ⅲ-8 Ⅲ-9 Ⅲ-10 Ⅲ-11 Ⅲ-12 Ⅲ-13 Ⅲ-14 Ⅲ-15 Ⅲ-16 Ⅲ-17 Ⅲ-18 Ⅲ-19 Ⅲ-20 Ⅲ-21 Ⅲ-22 Ⅲ-23 Ⅲ-24 Ⅲ-25 Ⅲ-26 Ⅲ-27 Ⅲ-28 Ⅲ-29 Ⅲ-30 Ⅲ-31 Ⅲ-32 Ⅲ-33 Ⅲ-34 Ⅲ-35 Ⅲ-36 Ⅲ-37 Ⅲ-38 Ⅲ-39 Ⅲ-40 Ⅲ-41 Ⅲ-42 Ⅲ-43 Ⅲ-44 Ⅲ-45 Ⅲ-46 Ⅲ-47 Ⅲ-48 Ⅲ-49 Ⅲ-50 Ⅲ-51 Ⅲ-52 Ⅲ-53 Ⅲ-54 Ⅲ-55 Ⅲ-56 Ⅲ-57 Ⅲ-58 Ⅲ-59 Ⅲ-60 Ⅲ-61 III-62; or The compounds represented by Formula IV are selected from the group consisting of compounds represented by Formulas IV-1 to IV-26. Ⅳ-1 Ⅳ-2 Ⅳ-3 Ⅳ-4 Ⅳ-5 Ⅳ-6 Ⅳ-7 Ⅳ-8 Ⅳ-9 Ⅳ-10 Ⅳ-11 Ⅳ-12 Ⅳ-13 Ⅳ-14 Ⅳ-15 Ⅳ-16 Ⅳ-17 Ⅳ-18 Ⅳ-19 Ⅳ-20 Ⅳ-21 Ⅳ-22 Ⅳ-23 Ⅳ-24 Ⅳ-25 Ⅳ-26。 9. The liquid crystal composition according to claim 1, characterized in that, The liquid crystal composition comprises, by weight percentage: 1-30% of the first component, 1-90% of the second component, and 0.05-70% of the third component.

10. A liquid crystal display element, characterized in that, It comprises the liquid crystal composition as described in any one of claims 1-9.

11. A liquid crystal display, characterized in that, It comprises the liquid crystal composition as described in any one of claims 1-9.

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