Liquid crystal composition and liquid crystal display panel

Abstract

This application provides a liquid crystal composition and a liquid crystal display panel. The liquid crystal composition comprises one or more compounds represented by Formula I, one or more compounds represented by Formula II, one or more compounds represented by Formula III, and one or more compounds represented by Formula IV. The chemical formulas of the compounds of Formula I, Formula II, Formula III, and Formula IV are as follows: The liquid crystal composition provided by this application can reduce the liquid crystal response time, reduce power consumption, and improve the response speed of the liquid crystal display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to a liquid crystal composition and a liquid crystal display panel. Background Technology

[0002] Liquid crystal compositions are widely used in various displays, including but not limited to watches, mobile phones, televisions, and computers. In thin-film transistor liquid crystal displays (TFT-LCDs), liquid crystals act as a "light valve," controlling the amount of backlight transmitted to adjust the display's brightness.

[0003] The response speed and display effect of a liquid crystal display are related to the properties of the liquid crystal composition, while the optical, electrical and mechanical properties of the liquid crystal composition depend on the structure of the liquid crystal molecules and the substituent groups.

[0004] With the continuous development of LCD displays, the requirements for display effects and performance of LCD displays are also getting higher and higher. Therefore, it is urgent to develop liquid crystal materials with faster response time, lower power consumption and better performance. Summary of the Invention

[0005] This application provides a liquid crystal composition and a liquid crystal display panel that can reduce liquid crystal response time, reduce power consumption, and improve the response speed of the liquid crystal display panel.

[0006] This application provides a liquid crystal composition comprising one or more compounds represented by Formula I, one or more compounds represented by Formula II, one or more compounds represented by Formula III, and one or more compounds represented by Formula IV, wherein the chemical formulas of the compounds of Formula I, Formula II, Formula III, and Formula IV are:

[0007]

[0008]

[0009] in,

[0010] X1 represents -O-, -S-, -CH2-, -CF2-, -CH2-CH2-, or -CF2-CF2-;

[0011] X2 represents -O- or -S-;

[0012] n is 0, 1, or 2;

[0013] L1 and L2 represent H or F;

[0014] Each represents independently of the others.

[0015] H can be mono- or poly-substituted by F, Cl, Br, or I;

[0016] Z represents a single bond, -O-, -S-, -SO2-, -CO-, -C(O)O-, -OC(O)-, -OC(O)O-, -CF2O-, -OCF2-, -CH2-CH2-, -CF2-CF2-, -CF2-CH2-, -(CH2)3-, -CH2-CF2-, -CHF-CHF-, -CH2O-, -OCH2-, -CF=CH-, -CH=CF-, -CF=CF-, -CH=CH-, or -C≡C-, and one or more H atoms in the group can be replaced by F, Cl, Br, or I;

[0017] R1, R2, R3, R4, R5, R6, R7, and R8 each independently represent H, F, Cl, Br, I, CN, SCN, NCS, SF5, or an alkyl or alkoxy group having 1-15 carbon atoms, or an alkenyl or alkenyloxy group having 2-15 carbon atoms, or an alkynyl or alkynoxy group having 2-15 carbon atoms; wherein the terminal groups of R1, R2, R3, R4, R5, R6, R7, and R8 may be monosubstituted with H, CN, or CF3, and one or more CH2 groups in R1, R2, R3, R4, R5, R6, R7, and R8 may be substituted with -O-, -S-, -SO2-, -CO-, -C(O)O-, -OC(O)-, -OC(O)O-, -CF2O-, -OCF2-, -CH2-CH2-, -(CH2)3-, -CF2-CF2-, -CF2-CH2-, -CH2-CF2-, -CHF-CHF-, -CH2O-, -OCH2-, -CF=CH-, -CH=CF-, -CF=CF-, -CH=CH- or -C≡C- are substituted and the heteroatoms are not directly bonded. One or more H atoms in the group can be substituted by F, Cl, Br or I.

[0018] In one embodiment, X1 in Formula I represents -O- or -CH2-.

[0019] In one embodiment, in Formula I express H can be mono- or poly-substituted by F, Cl, Br, or I.

[0020] In one embodiment, the compound represented by formula I is selected from sub-formulas I-1 to I-8:

[0021]

[0022] In one embodiment, Z in Formula III represents a single bond, -CF2O-, -OCF2-, -CH2-CH2-, -CF2-CF2-, -CH2O-, -OCH2-, -CH=CH-, or -C≡C-, and one or more H groups can be substituted by F, Cl, Br, or I.

[0023] In one embodiment, in Formula III Representing each other independently H can be mono- or poly-substituted by F, Cl, Br, or I.

[0024] In one embodiment, the compound represented by formula III is selected from sub-formulas III-1 to III-16:

[0025]

[0026] In one embodiment, the compound represented by formula IV is selected from subformulas IV-1 and IV-2:

[0027]

[0028] In one embodiment, the liquid crystal composition comprises the following components by weight percentage:

[0029] 1-50% of the compounds represented by Formula I;

[0030] 1-80% of the compounds represented by Formula II;

[0031] 1-70% of the compounds represented by Formula III; and

[0032] 1-40% of the compounds represented by Formula IV.

[0033] This application also provides a liquid crystal display panel, including a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer located between the first substrate and the second substrate, the liquid crystal layer comprising the liquid crystal composition described above.

[0034] The beneficial effects of this application are as follows:

[0035] This application provides a liquid crystal composition and a liquid crystal display panel. The liquid crystal composition provided in this application contains one or more compounds represented by Formula I, one or more compounds represented by Formula II, one or more compounds represented by Formula III, and one or more compounds represented by Formula IV. The liquid crystal composition of this application has the characteristics of low viscosity, high elastic constant (K), high dielectric anisotropy (Δε), and adjustable optical anisotropy (Δn), which can reduce the response time of the liquid crystal, reduce power consumption, and improve the response speed of the liquid crystal display panel. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments or prior art, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of a liquid crystal display panel provided in an embodiment of this application. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0039] In the description of this application, it should be understood that the terms "upper," "lower," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] Reference numerals and / or reference letters may be repeated in different embodiments of this application. Such repetition is for the purpose of simplification and clarity and does not in itself indicate the relationship between the various implementations and / or settings discussed.

[0041] This application provides a liquid crystal composition comprising one or more compounds represented by Formula I, one or more compounds represented by Formula II, one or more compounds represented by Formula III, and one or more compounds represented by Formula IV, wherein the chemical formulas of the compounds of Formula I, Formula II, Formula III, and Formula IV are:

[0042]

[0043] in,

[0044] X1 represents -O-, -S-, -CH2-, -CF2-, -CH2-CH2-, or -CF2-CF2-;

[0045] X2 represents -O- or -S-;

[0046] n is 0, 1, or 2;

[0047] L1 and L2 represent H or F;

[0048] Each represents independently of the others.

[0049] H can be mono- or poly-substituted by F, Cl, Br, or I;

[0050] Z represents a single bond, -O-, -S-, -SO2-, -CO-, -C(O)O-, -OC(O)-, -OC(O)O-, -CF2O-, -OCF2-, -CH2-CH2-, -CF2-CF2-, -CF2-CH2-, -(CH2)3-, -CH2-CF2-, -CHF-CHF-, -CH2O-, -OCH2-, -CF=CH-, -CH=CF-, -CF=CF-, -CH=CH-, or -C≡C-, and one or more H atoms in the group can be replaced by F, Cl, Br, or I;

[0051] R1, R2, R3, R4, R5, R6, R7, and R8 each independently represent H, F, Cl, Br, I, CN, SCN, NCS, SF5, or an alkyl or alkoxy group having 1-15 carbon atoms, or an alkenyl or alkenyloxy group having 2-15 carbon atoms, or an alkynyl or alkynoxy group having 2-15 carbon atoms; wherein the terminal groups of R1, R2, R3, R4, R5, R6, R7, and R8 may be monosubstituted with H, CN, or CF3, and one or more CH2 groups in R1, R2, R3, R4, R5, R6, R7, and R8 may be substituted with -O-, The following groups are used to replace the heteroatoms with -S-, -SO2-, -CO-, -C(O)O-, -OC(O)-, -OC(O)O-, -CF2O-, -OCF2-, -CH2-CH2-, -(CH2)3-, -CF2-CF2-, -CF2-CH2-, -CH2-CF2-, -CHF-CHF-, -CH2O-, -OCH2-, -CF=CH-, -CH=CF-, -CF=CF-, -CH=CH-, or -C≡C-, and the heteroatoms are not directly bonded. One or more H atoms in the group can be replaced by F, Cl, Br, or I.

[0052] In the liquid crystal compositions of this application, the compound represented by Formula I has low optical anisotropy (Δn), high dielectric anisotropy (Δε), moderate elastic constant (K), and viscosity, which is used to improve the dielectric anisotropy of the liquid crystal composition; the compound represented by Formula II has low optical anisotropy (Δn), low dielectric anisotropy (Δε), and low viscosity, which is used to reduce the viscosity of the liquid crystal composition; the compound represented by Formula III has high clearing point (Tni), adjustable optical anisotropy (Δn), high elastic constant (K), high dielectric anisotropy (Δε), and high viscosity, which is used to adjust the Tni, Δn, K values, and Δε of the liquid crystal composition; the compound represented by Formula IV has high optical anisotropy (Δn), high dielectric anisotropy (Δε), and moderate viscosity, which is used to improve the optical anisotropy (Δn) and dielectric anisotropy (Δε) of the liquid crystal composition.

[0053] This application combines the compounds represented by Formulas I, II, III and IV to form a liquid crystal composition, which gives the liquid crystal composition of this application the characteristics of low viscosity, high elastic constant (K), high dielectric anisotropy (Δε), and adjustable optical anisotropy (Δn), thereby reducing the response time of the liquid crystal and reducing power consumption.

[0054] In one embodiment, X1 in Formula I represents -O- or -CH2-.

[0055] In one embodiment, in Formula I express H can be mono- or poly-substituted by F, Cl, Br, or I.

[0056] In one embodiment, the compound represented by formula I is selected from sub-formulas I-1 to I-8:

[0057]

[0058] In this context, R1 and R2 independently represent H, F, Cl, Br, I, CN, SCN, NCS, SF5, or an alkyl or alkoxy group having 1-15 carbon atoms, or an alkenyl or alkenyloxy group having 2-15 carbon atoms, or an alkynyl or alkynoxy group having 2-15 carbon atoms; the terminal groups of R1 and R2 can be monosubstituted by H, CN, or CF3, and one or more CH2 groups in R1 and R2 can be -O-, -S-, -SO2-, -CO-, -C(O)O-, or -OC. The following groups are substituted with (O)-, -OC(O)O-, -CF2O-, -OCF2-, -CH2-CH2-, -(CH2)3-, -CF2-CF2-, -CF2-CH2-, -CH2-CF2-, -CHF-CHF-, -CH2O-, -OCH2-, -CF=CH-, -CH=CF-, -CF=CF-, -CH=CH-, or -C≡C-, and the heteroatoms are not directly bonded, and one or more H atoms in the group can be substituted with F, Cl, Br, or I.

[0059] In one embodiment, Z in Formula III represents a single bond, -CF2O-, -OCF2-, -CH2-CH2-, -CF2-CF2-, -CH2O-, -OCH2-, -CH=CH-, or -C≡C-, and one or more H groups can be substituted by F, Cl, Br, or I.

[0060] In one embodiment, in Formula III Representing each other independently H can be mono- or poly-substituted by F, Cl, Br, or I.

[0061] In one embodiment, the compound represented by formula III is selected from sub-formulas III-1 to III-16:

[0062]

[0063] In this context, R5 and R6 independently represent H, F, Cl, Br, I, CN, SCN, NCS, SF5, or an alkyl or alkoxy group having 1-15 carbon atoms, or an alkenyl or alkenoxy group having 2-15 carbon atoms, or an alkynyl or alkynoxy group having 2-15 carbon atoms; the terminal groups of R5 and R6 can be monosubstituted by H, CN, or CF3, and one or more CH2 groups in R5 and R6 can be replaced by -O-, -S-, -SO2-, -CO-, -C(O)O-, or -OC. The following groups are substituted with (O)-, -OC(O)O-, -CF2O-, -OCF2-, -CH2-CH2-, -(CH2)3-, -CF2-CF2-, -CF2-CH2-, -CH2-CF2-, -CHF-CHF-, -CH2O-, -OCH2-, -CF=CH-, -CH=CF-, -CF=CF-, -CH=CH-, or -C≡C-, and the heteroatoms are not directly bonded, and one or more H atoms in the group can be substituted with F, Cl, Br, or I.

[0064] In one embodiment, the compound represented by formula IV is selected from subformulas IV-1 and IV-2:

[0065]

[0066] In this context, R7 and R8 independently represent H, F, Cl, Br, I, CN, SCN, NCS, SF5, or an alkyl or alkoxy group having 1-15 carbon atoms, or an alkenyl or alkenyloxy group having 2-15 carbon atoms, or an alkynyl or alkynoxy group having 2-15 carbon atoms; the terminal groups of R7 and R8 can be monosubstituted by H, CN, or CF3, and one or more CH2 groups in R7 and R8 can be replaced by -O-, -S-, -SO2-, -CO-, -C(O)O-, or -OC. The following groups are substituted with (O)-, -OC(O)O-, -CF2O-, -OCF2-, -CH2-CH2-, -(CH2)3-, -CF2-CF2-, -CF2-CH2-, -CH2-CF2-, -CHF-CHF-, -CH2O-, -OCH2-, -CF=CH-, -CH=CF-, -CF=CF-, -CH=CH-, or -C≡C-, and the heteroatoms are not directly bonded, and one or more H atoms in the group can be substituted with F, Cl, Br, or I.

[0067] In one embodiment, the liquid crystal composition comprises the following components by weight percentage:

[0068] 1-50% of the compounds represented by Formula I;

[0069] 1-80% of the compounds represented by Formula II;

[0070] 1-70% of the compounds represented by Formula III; and

[0071] 1-40% of the compounds represented by Formula IV.

[0072] Preferably, the liquid crystal composition comprises the following components in weight percentage:

[0073] 1-30% of the compounds represented by Formula I;

[0074] 10-70% of the compounds represented by Formula II;

[0075] 5-50% of the compounds represented by Formula III; and

[0076] 1-20% of the compounds represented by Formula IV.

[0077] Particularly preferably, the liquid crystal composition comprises the following components in weight percentage:

[0078] 1-20% of the compounds represented by Formula I;

[0079] 20-50% of the compounds represented by Formula II;

[0080] 10-40% of the compounds represented by Formula III; and

[0081] 1-15% of the compounds represented by Formula IV.

[0082] The liquid crystal combination of this application will be further described below through specific embodiments.

[0083] Experimental methods:

[0084] In the following embodiments, the liquid crystal composition is prepared by a thermal dissolution method, including the following steps:

[0085] 1. Weigh each component compound in the liquid crystal composition according to the mass percentage using a balance. There is no specific requirement for the order of weighing and adding the compounds. Usually, the liquid crystal compounds are weighed and mixed in order of increasing melting point to obtain a mixture.

[0086] 2. Heat the above mixture at 60-100℃ and stir to fully dissolve and mix the components to obtain a mixed solution;

[0087] 3. Cool the above mixture to room temperature and encapsulate it to obtain the target sample.

[0088] Example 1

[0089] The liquid crystal composition of Example 1 comprises the following components:

[0090]

[0091] The mass percentages of the above components in the liquid crystal composition are 25%, 14%, 10%, 9%, 4%, 5%, 8%, 5%, 7%, 5%, and 8%, respectively. Target sample 1 was prepared by using the above experimental method with each component in the liquid crystal composition of Example 1. The performance parameters of sample 1 were tested, and the test results are shown in Table 1.

[0092] Table 1. Components, proportions, and performance parameters of the liquid crystal composition in Example 1.

[0093]

[0094] Example 2

[0095] The liquid crystal composition of Example 2 comprises the following components:

[0096]

[0097] The mass percentages of the above components in the liquid crystal composition are 22%, 13%, 6%, 6%, 4%, 11%, 7%, 4%, 5%, 3%, 7%, 8%, and 4%, respectively. Target sample 2 was prepared by using the above experimental method with each component of the liquid crystal composition of Example 2. The performance parameters of sample 2 were tested, and the test results are shown in Table 2.

[0098] Table 2. Components, proportions, and performance parameters of the liquid crystal composition in Example 2.

[0099]

[0100] Example 3

[0101] The liquid crystal composition of Example 3 comprises the following components:

[0102]

[0103] The mass percentages of the above components in the liquid crystal composition are 23%, 4%, 4%, 5%, 7%, 4%, 5%, 6%, 10%, 5%, 8%, 9%, and 10%, respectively. Target sample 3 was prepared by using the above experimental method with each component of the liquid crystal composition of Example 3. The performance parameters of sample 3 were tested, and the test results are shown in Table 3.

[0104] Table 3. Components, proportions, and performance parameters of the liquid crystal composition in Example 3.

[0105]

[0106] Example 4

[0107] The liquid crystal composition of Example 4 comprises the following components: The mass percentages of the above components in the liquid crystal composition are 28%, 12%, 6%, 6%, 5%, 4%, 9%, 7%, 8%, 4%, and 11%, respectively. Target sample 4 was prepared by using the above experimental method with each component of the liquid crystal composition of Example 4. The performance parameters of sample 4 were tested, and the test results are shown in Table 4.

[0108] Table 4. Components, proportions, and performance parameters of the liquid crystal composition in Example 4.

[0109]

[0110] Example 5

[0111] The liquid crystal composition of Example 5 comprises the following components:

[0112]

[0113] The mass percentages of the above components in the liquid crystal composition are 19%, 9%, 8%, 7%, 9%, 8%, 7%, 4%, 6%, 3%, 5%, 10%, and 5%, respectively. Target sample 5 was prepared by using the above experimental method with each component of the liquid crystal composition of Example 5. The performance parameters of sample 5 were tested, and the test results are shown in Table 5.

[0114] Table 5. Components, proportions, and performance parameters of the liquid crystal composition in Example 5.

[0115]

[0116] Example 6

[0117] The liquid crystal composition of Example 6 comprises the following components:

[0118] The mass percentages of the above components in the liquid crystal composition are 25%, 14%, 10%, 8%, 8%, 5%, 8%, 5%, 4%, 5%, and 8%, respectively. Target sample 6 was prepared by using the above experimental method with each component of the liquid crystal composition of Example 6. The performance parameters of sample 6 were tested, and the test results are shown in Table 6.

[0119] Table 6. Components, proportions, and performance parameters of the liquid crystal composition in Example 6.

[0120]

[0121] Example 7

[0122] The liquid crystal composition of Example 7 comprises the following components:

[0123]

[0124] The mass percentages of the above components in the liquid crystal composition are 8%, 6%, 15%, 12%, 8%, 4%, 5%, 12%, 6%, 6%, 4%, 6%, and 8%, respectively. Target sample 7 was prepared by using the above experimental method with each component in the liquid crystal composition of Example 7. The performance parameters of sample 7 were tested, and the test results are shown in Table 7.

[0125] Table 7. Components, proportions, and performance parameters of the liquid crystal composition in Example 7.

[0126]

[0127] Unless otherwise stated, all percentages in this application are by weight, and the total weight percentage of the liquid crystal composition is 100%; temperature is in °C; Tni represents the clearing point of the liquid crystal composition (unit: °C); Δn represents the optical anisotropy at 25 °C, n e γ represents the refractive index of the unusual light; γ1 represents the rotational viscosity at 25°C (in mPa·s); Δε represents the dielectric anisotropy at 25°C, ε ⊥ K is the dielectric constant perpendicular to the long axis of the liquid crystal molecules; 11 K is the torsional elastic constant. 33 Let be the elastic constant of the warp.

[0128] As can be seen from the above embodiments, the liquid crystal compositions of Embodiments 1, 2, 3, 4, and 5 are liquid crystal compositions composed of compounds represented by Formulas I, II, III, and IV of this application. As can be seen from the performance parameters of the liquid crystal compositions of the above embodiments, the liquid crystal compositions of Embodiments 1 to 5 of this application all have the characteristics of low viscosity, high elastic constant (K), high dielectric anisotropy (Δε), and adjustable optical anisotropy (Δn).

[0129] Examples 6 and 7 are comparative examples relative to Example 1.

[0130] Compared to the liquid crystal composition of Example 1, the liquid crystal composition of Example 6 does not contain the compound represented by Formula IV, which has high Δε and medium viscosity. Compared to the liquid crystal composition of Example 1, under the premise of comparable Tni, K value, and viscosity, the liquid crystal composition of Example 6 exhibits a certain degree of decrease in Δε, resulting in an increase in threshold voltage and driving voltage (V). op Increased efficiency leads to increased power consumption.

[0131] Compared to the liquid crystal composition of Example 1, the liquid crystal composition of Example 7 does not contain the low-viscosity compound represented by Formula II. The viscosity of the liquid crystal composition in Example 7 increased significantly, resulting in an increased response time of the liquid crystal composition.

[0132] In this application embodiment, the addition of a low-viscosity compound represented by Formula II and a high-k-value compound represented by Formula III to the liquid crystal composition can effectively reduce the response time of the liquid crystal composition; the addition of compounds represented by Formulas I, III, and IV with high Δε can effectively improve the dielectric anisotropy of the liquid crystal composition, which is also beneficial to improving the response time (t) of the liquid crystal display panel. on The liquid crystal compositions of this application, through combinations of compounds represented by Formulas I, II, III, and IV, can achieve liquid crystal compositions with low viscosity, high Δn, high Δε, and high K. These liquid crystal compositions can be applied to fast-response liquid crystal related products, such as reducing the response time of positive liquid crystal products, for example, reducing the response time of the product from 30ms to 25ms.

[0133] Furthermore, accelerating the response time can also be achieved by reducing the cell thickness. The transmittance loss due to reduced cell thickness (PS height 1.5-3.2 μm) can be compensated for by increasing the Δn of the liquid crystal composition. Therefore, the liquid crystal composition of this application uses compounds represented by Formulas III and IV with high Δn to effectively increase the transmittance of the liquid crystal composition, thereby accelerating the response time of the liquid crystal.

[0134] The liquid crystal composition of this application can also be applied to low-power liquid crystal display products. These products require increased panel transmittance and reduced threshold voltage to lower overall power consumption. Therefore, such products often employ a large cell thickness (PS height 2.0-3.8μm) and a large Δn to improve liquid crystal transmittance and reduce backlight loss; simultaneously, a high Δε is needed to reduce the threshold voltage and reduce V0. op This reduces power consumption. The liquid crystal composition of this application can meet the above requirements.

[0135] The different combinations of components in the liquid crystal composition of this application can be based on transmittance and V. op The requirement is to use a combination of high Δn / low Δn and high Δε / low Δε to achieve the low power consumption requirement that matches the product box thickness.

[0136] This application also provides a liquid crystal display panel 10, including a first substrate 1 and a second substrate 2 disposed opposite to each other, and a liquid crystal layer 3 located between the first substrate 1 and the second substrate 2, the liquid crystal layer 3 comprising the liquid crystal composition described above.

[0137] The liquid crystal display panel described in this application may be one of a twisted nematic (TN) type liquid crystal display panel, a fringe field switching (FFS) type liquid crystal display panel, or an in-plane switching (IPS) type liquid crystal display panel, but is not limited thereto.

[0138] When the liquid crystal composition of this application is used in TN, FFS or IPS type liquid crystal display panels, it can effectively reduce the response time of the liquid crystal display panel and improve the response speed of the liquid crystal display panel.

[0139] The liquid crystal display panel provided in this application can be used in display devices such as automotive panels, mobile phones, smartphones, laptops, tablets, and televisions.

[0140] In summary, although the present application has disclosed the preferred embodiments as described above, the above preferred embodiments are not intended to limit the present application. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be determined by the scope defined in the claims.

Claims

1. A liquid crystal composition, characterized in that, Composed of one or more compounds represented by Formula I, one or more compounds represented by Formula II, one or more compounds represented by Formula III, and one or more compounds represented by Formula IV, wherein the chemical formulas of the compounds of Formula I, Formula II, Formula III, and Formula IV are: ， ， ， ； in, X1 represents -CH2-; X2 represents -O- or -S-; n is 1 or 2; L1 and L2 represent H or F; express ; express or ; Each represents independently of the others. , , , or ; Z represents a single bond or -CF2O-; R1, R2, R3, R4, R5 and R6 each independently represent H, F, or alkyl or alkoxy groups having 1-15 carbon atoms, or alkenyl or alkenyloxy groups having 2-15 carbon atoms, or alkynyl or alkynyloxy groups having 2-15 carbon atoms. R7 represents an alkoxy group having 1-15 carbon atoms; R8 represents F.

2. The liquid crystal composition according to claim 1, characterized in that, The compounds represented by Formula III are selected from subformulas III-1 to III-16: 。 3. The liquid crystal composition according to any one of claims 1-2, characterized in that, The liquid crystal composition comprises the following components by weight percentage: 1-50% of the compounds represented by Formula I; 1-80% of the compounds represented by Formula II; 1-70% of the compounds represented by Formula III; and 1-40% of the compounds represented by Formula IV.

4. A liquid crystal display panel, characterized in that, The device includes a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer located between the first substrate and the second substrate, the liquid crystal layer comprising a liquid crystal composition as described in any one of claims 1-3.

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