CN115074139B - Liquid crystal composition and liquid crystal display panel - Google Patents
Liquid crystal composition and liquid crystal display panel Download PDFInfo
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- CN115074139B CN115074139B CN202210774382.8A CN202210774382A CN115074139B CN 115074139 B CN115074139 B CN 115074139B CN 202210774382 A CN202210774382 A CN 202210774382A CN 115074139 B CN115074139 B CN 115074139B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 138
- 239000000203 mixture Substances 0.000 title claims abstract description 60
- 150000001875 compounds Chemical class 0.000 claims description 59
- 239000000758 substrate Substances 0.000 claims description 20
- 125000004432 carbon atom Chemical group C* 0.000 description 23
- 125000000217 alkyl group Chemical group 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 238000003848 UV Light-Curing Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- -1 (cyclohexylmethoxy) phenyl ring Chemical group 0.000 description 2
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical group C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- TXCDCPKCNAJMEE-UHFFFAOYSA-N dibenzofuran Chemical group C1=CC=C2C3=CC=CC=C3OC2=C1 TXCDCPKCNAJMEE-UHFFFAOYSA-N 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- ONCZDRURRATYFI-QTCHDTBASA-N methyl (2z)-2-methoxyimino-2-[2-[[(e)-1-[3-(trifluoromethyl)phenyl]ethylideneamino]oxymethyl]phenyl]acetate Chemical compound CO\N=C(/C(=O)OC)C1=CC=CC=C1CO\N=C(/C)C1=CC=CC(C(F)(F)F)=C1 ONCZDRURRATYFI-QTCHDTBASA-N 0.000 description 1
- RGOVYLWUIBMPGK-UHFFFAOYSA-N nonivamide Chemical compound CCCCCCCCC(=O)NCC1=CC=C(O)C(OC)=C1 RGOVYLWUIBMPGK-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
- C09K19/44—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal Substances (AREA)
Abstract
The application provides a liquid crystal composition and a liquid crystal display panel. The liquid crystal composition comprises 10-50% of a first component, 10-30% of a second component, 1-10% of a third component, 1-30% of a fourth component, 1-30% of a fifth component, 1-10% of a sixth component and 1-10% of a seventh component. The liquid crystal composition has lower viscosity, is used in a liquid crystal display panel, and can improve the response speed of the liquid crystal display panel.
Description
Technical Field
The application relates to the technical field of display, in particular to a liquid crystal composition and a liquid crystal display panel.
Background
Thin film transistor liquid crystal displays (Thin Film Transistor Liquid CRYSTAL DISPLAY, TFT-LCDs) are becoming increasingly popular in the marketplace due to their high contrast ratio, fast response time, etc. The display modes of the liquid crystal display are mainly classified into a TN (TWIST NEMATIC, twisted nematic) mode, an IPS (In-PLANE SWITCHING ) mode, an FFS (FRINGE FIELD SWITCHING, fringe field switching) mode, and a VA (VERTICAL ALIGNMENT ) mode. In the above display mode, the liquid crystal display is to fill liquid crystal between two substrates, and to drive the rotation of the liquid crystal molecules by powering the substrates to realize the transmission of light with different brightness, so as to display different pictures.
The liquid crystal material is a mixture of a plurality of liquid crystal compounds. In a liquid crystal display, a liquid crystal material is required to have characteristics of good optical anisotropy, good dielectric anisotropy, rapid response time, good low-temperature characteristics, good thermal stability, low threshold voltage, and the like. Therefore, the types and mass ratios of the compounds in the liquid crystal material need to be optimally combined to meet the performance requirements of the display. At present, with the increasing performance requirements of liquid crystal displays, in order to improve the image quality of the displays, liquid crystals are required to achieve faster and faster response. Especially, the faster the response, the better the picture experience, such as television products with high refresh rate, electronic contest products for games, and the like. For liquid crystal materials, decreasing the viscosity of the liquid crystal can achieve faster response.
Disclosure of Invention
In view of the above, the present application is directed to a liquid crystal composition having a low viscosity and a liquid crystal display panel having a high response speed.
The present application provides a liquid crystal composition comprising:
10-50% by mass of a first component selected from at least one of compounds represented by general formula (1) or (2);
10-30% by mass of a second component selected from at least one of the compounds represented by the general formula (3);
a third component with mass fraction of 1% -10%, wherein the third component is selected from at least one of compounds represented by general formula (4);
a fourth component with mass fraction of 1-30%, wherein the fourth component is selected from at least one of compounds represented by general formula (5);
a fifth component having a mass fraction of 1% to 30%, the fifth component being selected from at least one of compounds represented by the general formula (6);
A sixth component with mass fraction of 1-10%, wherein the sixth component is selected from at least one of compounds represented by general formula (7); and
A seventh component having a mass fraction of 1% to 10%, the seventh component being selected from at least one of compounds represented by the general formula (8);
Wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14 each represent an alkyl group of 1 to 5 carbon atoms, which are the same or different from each other, and "D" represents "deuteration".
Alternatively, in one embodiment,
The mass fraction of the first component is 20% -40%;
the mass fraction of the second component is 10% -25%;
the mass fraction of the third component is 1% -10%;
the mass fraction of the fourth component is 10% -25%;
the mass fraction of the fifth component is 10% -25%;
The mass fraction of the sixth component is 1% -10%;
the mass fraction of the seventh component is 1% -10%.
Alternatively, in one embodiment,
The mass fraction of the first component is 28% -38%;
the mass fraction of the second component is 15% -20%;
the mass fraction of the third component is 2% -6%;
the mass fraction of the fourth component is 15% -22%;
the mass fraction of the fifth component is 15% -20%;
the mass fraction of the sixth component is 1% -5%;
The mass fraction of the seventh component is 2% -7%.
Alternatively, in one embodiment, the first component is selected from at least one of the following compounds.
Optionally, in one embodiment, the second component is selected from at least one of the following compounds.
Optionally, in one embodiment, the third component is selected from at least one of the following compounds.
Optionally, in one embodiment, the fourth component is selected from at least one of the following compounds.
Optionally, in one embodiment, the fifth component is selected from at least one of the following compounds.
Optionally, in one embodiment, the sixth component is selected from at least one of the following compounds.
Optionally, in one embodiment, the seventh component is selected from at least one of the following compounds.
The application also provides a liquid crystal display panel. The liquid crystal display panel comprises an array substrate, an opposite substrate arranged opposite to the array substrate and a liquid crystal layer comprising the liquid crystal composition.
The liquid crystal composition comprises 10-50% of a first component, 10-30% of a second component, 1-10% of a third component, 1-30% of a fourth component, 1-30% of a fifth component, 1-10% of a sixth component and 1-10% of a seventh component, has lower viscosity, is used in a liquid crystal display panel, and can improve the response speed of the liquid crystal display panel.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a structural diagram of a liquid crystal display panel according to an embodiment of the present application.
Fig. 2 is a structural diagram of a liquid crystal display panel according to another embodiment of the present application.
Detailed Description
The technical solutions of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the application. All other embodiments, based on the embodiments of the application, which a person skilled in the art would obtain without making any inventive effort, are within the scope of the application.
The present application provides a liquid crystal composition comprising:
10-50% by mass of a first component selected from at least one of compounds represented by general formula (1) or (2);
10-30% by mass of a second component selected from at least one of the compounds represented by the general formula (3);
a third component with mass fraction of 1% -10%, wherein the third component is selected from at least one of compounds represented by general formula (4);
a fourth component with mass fraction of 1-30%, wherein the fourth component is selected from at least one of compounds represented by general formula (5);
a fifth component having a mass fraction of 1% to 30%, the fifth component being selected from at least one of compounds represented by the general formula (6);
A sixth component with mass fraction of 1-10%, wherein the sixth component is selected from at least one of compounds represented by general formula (7); and
A seventh component having a mass fraction of 1% to 10%, the seventh component being selected from at least one of compounds represented by the general formula (8);
Wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14 each represent an alkyl group of 1 to 5 carbon atoms, which are the same or different from each other, and "D" represents "deuteration".
For the liquid crystal compounds of the first component, H on the cyclohexane ring is all substituted by D, and there is an alkenyl substituent on the ring;
for the liquid crystal compound of the second component, H on the biphenyl ring is substituted by D and F, and an alkoxy substituent is arranged on the ring;
For the liquid crystal compounds of the third component, H in the dibenzofuran ring is substituted by D and F, and an alkoxy substituent is arranged on the ring;
For the liquid crystal compound of the fourth component, H on the (cyclohexylmethoxy) phenyl ring is substituted with D and F, and there is an alkoxy substituent on the ring;
for the liquid crystal compound of the fifth component, H on the (dicyclohexyl) methoxy benzene ring is substituted by D and F, and an alkoxy substituent is arranged on the ring;
For the liquid crystal compound of the sixth component, H on the terphenyl ring is substituted with D and F, F being on the same phenyl ring;
For the liquid crystal compound of the seventh component, H on the terphenyl ring is substituted with D and F, F being on different phenyl rings.
In the liquid crystal composition of the application, the first component is a diluent, and the main function is to reduce the viscosity of the liquid crystal system. The second to seventh components are liquid crystal negative monomers, and mainly contribute to physical properties such as elastic constant, dielectric and refractive index anisotropy of the liquid crystal. The second to seventh components affect the low temperature and clear point characteristics of the liquid crystal. The proportions of the first component to the seventh component are related to the properties of the liquid crystal composition. For example, when the content of the first component is too low, the viscosity of the liquid crystal is large, and the response time is slow. When the content of the first component is too high, the refractive index or dielectric constant of the liquid crystal is low, resulting in low transmittance of the liquid crystal panel. For the second to seventh components, too low or too high content of a certain component may cause a large loss of physical properties such as refractive index, dielectric constant or clearing point of the liquid crystal.
The organic compound initially forms a turbid liquid during heating, and has fluidity close to that of water but optical birefringence, and the temperature at this time is called a melting point. Continuing to raise the temperature, when the compound suddenly becomes isotropic transparent liquid at some higher temperature, the corresponding transition temperature is called a clearing point. From the melting point to the clearing point, the material is an anisotropic melt, forming liquid crystals.
In order to continuously improve the performance of liquid crystals, the inventors tried different monomer combinations in the formulation tuning. It was found through debugging that when the compound selected from the general formula (1) or (2) accounts for 10% -50% of the total weight of the liquid crystal composition, the compound selected from the general formula (3) accounts for 10% -30% of the total weight of the liquid crystal composition, the compound selected from the general formula (4) accounts for 1% -10% of the total weight of the liquid crystal composition, the compound selected from the general formula (5) accounts for 1% -30% of the total weight of the liquid crystal composition, the compound selected from the general formula (6) accounts for 1% -10% of the total weight of the liquid crystal composition, and the compound selected from the general formula (7) accounts for 1% -10% of the total weight of the liquid crystal composition, the response time of the liquid crystal composition is shortened.
In addition, in order to reduce power consumption, the liquid crystal is required to have a small driving voltage. Increasing the dielectric constant allows for a smaller driving voltage and thus lower power consumption, but also requires adjusting the liquid crystal composition to maintain optical, low temperature stability, and high temperature stability. Since an increase in the mass fraction of the compound containing a benzene ring increases the refractive index, and an increase in the mass fraction of the compound containing F leads to an increase in the dielectric constant, an increase in the mass fraction of the compound containing D can increase the reliability of the liquid crystal composition. By setting the first component to the seventh component in the above range, a higher refractive index can be maintained, good optical characteristics can be possessed, the dielectric constant is large, the threshold voltage is low, and the reliability of the liquid crystal composition can be improved. The liquid crystal composition has low temperature stability and high temperature stability.
Preferably, in some embodiments:
the mass fraction of the first component is 20% -40%;
the mass fraction of the second component is 10% -25%;
the mass fraction of the third component is 1% -10%;
the mass fraction of the fourth component is 10% -25%;
the mass fraction of the fifth component is 10% -25%;
The mass fraction of the sixth component is 1% -10%;
the mass fraction of the seventh component is 1% -10%.
When the mass fraction of each component of the liquid crystal composition is within the above range, the performance of the liquid crystal composition can be further improved.
More preferably, in some embodiments:
the mass fraction of the first component is 28% -38%;
the mass fraction of the second component is 15% -20%;
the mass fraction of the third component is 2% -6%;
the mass fraction of the fourth component is 15% -22%;
the mass fraction of the fifth component is 15% -20%;
the mass fraction of the sixth component is 1% -5%;
The mass fraction of the seventh component is 2% -7%.
When the mass fraction of each component of the liquid crystal composition is within the above range, the performance of the liquid crystal composition can be further improved.
Optionally, in some embodiments, the first component is selected from at least one of the following compounds.
Optionally, in some embodiments, the second component is selected from at least one of the following compounds.
Optionally, in some embodiments, the third component is selected from at least one of the following compounds.
Optionally, in some embodiments, the fourth component is selected from at least one of the following compounds.
Optionally, in some embodiments, the fifth component is selected from at least one of the following compounds.
Optionally, in some embodiments, the sixth component is selected from at least one of the following compounds.
Optionally, in some embodiments, the seventh component is selected from at least one of the following compounds.
The viscosity of the liquid crystal is increased after the alkyl chain of the compound is increased, the response time of the liquid crystal panel is reduced, and the alkyl chain is only selected within a certain length range in order to ensure the performance requirement of the liquid crystal panel.
For example, in the first component, R1 is an alkyl group of 1 to 5 carbon atoms, but R2 is an alkyl group of 1 to 3 carbon atoms, and the total number of carbon atoms of R1 and R2 is not more than 8.
In the second component, R3 is alkyl of 1 to 4 carbon atoms, R4 is H and alkyl of 1 to 4 carbon atoms, and the total number of carbon atoms of R1 and R4 is not more than 7.
In the third component, R5 is alkyl of 1 to 3 carbon atoms, R6 is H and alkyl of 1 to 4 carbon atoms, and the total number of carbon atoms of R5 and R6 is not more than 7.
In the fourth component, R7 is alkyl of 1 to 4 carbon atoms, but R8 is H and alkyl of 1 to 4 carbon atoms, and the total number of carbon atoms of R7 and R8 is not more than 7.
In the fifth component, R9 is alkyl of 1 to 4 carbon atoms, but R10 is H and alkyl of 1 to 4 carbon atoms, and the total number of carbon atoms of R9 and R10 is not more than 7.
In the sixth component, R11 is an alkyl group of 1 to 3 carbon atoms, but R12 is H and an alkyl group of 1 to 4 carbon atoms, and the total number of carbon atoms of R11 and R12 is not more than 7.
In the seventh component, R13 is alkyl of 1 to 4 carbon atoms, but R14 is H and alkyl of 1 to 4 carbon atoms, and the total number of carbon atoms of R13 and R14 is not more than 7.
The shorter the alkyl chain of the compound, the lower the viscosity and the faster the response speed. By selecting the first component to the seventh component among the above-mentioned liquid crystal compounds, the response speed of the liquid crystal composition can be further improved.
The application also provides a liquid crystal display panel which can be a TN type liquid crystal display panel, an IPS type liquid crystal display panel, an FFS type liquid crystal display panel or a VA type liquid crystal display panel.
Referring to fig. 1, a liquid crystal display panel 100 according to an embodiment of the application is a horizontal electric field type liquid crystal display panel, i.e., an IPS type liquid crystal display panel or an FFS type liquid crystal display panel. The liquid crystal display panel 100 includes an array substrate 10 and a counter substrate 20 disposed opposite to each other, and a liquid crystal layer 30 disposed between the array substrate 10 and the counter substrate 20. In the present embodiment, the opposite substrate 20 is a color film substrate. In other embodiments of the present application, the array substrate 10 may be a COA (color filter on array) type array substrate. At this time, the opposite substrate 20 does not include a color film layer, and the color film layer is disposed on the array substrate 10.
The liquid crystal composition of the application is directly injected when being applied to an IPS or FFS liquid crystal display panel, UV curing is not needed, and the first component to the seventh component exist in the form of a mixture. The liquid crystal layer 30 includes the liquid crystal composition as above. That is, the liquid crystal layer 30 includes the first to seventh components as described above.
Referring to fig. 2, a liquid crystal display panel 100 according to another embodiment of the application is a VA-mode liquid crystal display panel, and specifically a polymer stable vertical alignment (Polymer tabilized VERTICAL ALIGNMENT, PSVA) type liquid crystal panel. When the liquid crystal composition of the present application is applied to a VA-mode liquid crystal display panel, it is necessary to add a reactive monomer to the liquid crystal composition and to perform UV curing. The reactive monomer is polymerized during UV curing, and the polymer is deposited on both inner surfaces of the array substrate and the opposite substrate by phase separation to fix the pretilt angle of the liquid crystal, and the first to seventh components are not polymerized and remain in the form of a mixture.
Hereinafter, the performance of the liquid crystal composition and the liquid crystal display panel of the present application will be described by way of comparative examples and examples 1 and 2.
Example 1
Liquid crystal compositions were prepared in accordance with the proportions of the liquid crystal compositions of example 1 in table 1, and the properties of the liquid crystal compositions were measured.
Example 2
Liquid crystal compositions were prepared in accordance with the proportions of the liquid crystal compositions of example 2 in table 1, and the properties of the liquid crystal compositions were measured.
Comparative example 1
Liquid crystal compositions were prepared in accordance with the proportions of the liquid crystal compositions of table 2, and the characteristics of the liquid crystal compositions were measured.
The results of measuring the characteristics of the liquid crystal compositions of examples 1 and 2 and comparative example are shown in table 3.
Table 1 proportion of liquid Crystal compositions of examples 1 and 2
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Table 2 proportion of liquid Crystal composition of comparative example
Table 3 performance parameters of the liquid crystal compositions of examples 1 and 2 and comparative example
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The dielectric constant was measured at room temperature at a test frequency of 1KHz. The test condition for the birefringence Δn is the refractive index for 589nm light at room temperature. The birefringence is calculated according to the formula Δn=ne-no.
The lower the rotational viscosity, the faster the response speed of the liquid crystal. The liquid crystal compositions of example 1 and example 2 of the present application each have a lower rotational viscosity than the comparative example, and a faster response speed can be obtained when the liquid crystal compositions of example 1 and example 2 of the present application are applied to a liquid crystal display panel. Further, since the content of the first component as the diluent in example 1 is larger than that in example 2, the rotational viscosity of example 1 is lower than that of example 2.
For negative liquid crystals, the larger the absolute value of the dielectric constant, the larger the value of the dielectric anisotropy. The larger the dielectric anisotropy value, the smaller the threshold voltage of the liquid crystal. The liquid crystal compositions of examples 1 and 2 of the present application each have a dielectric constant larger than that of the comparative example, and the threshold voltage of the liquid crystal is small. The liquid crystal composition is applied to a liquid crystal display panel, and can reduce the driving voltage of liquid crystal, thereby reducing the power consumption of the liquid crystal display panel.
Examples 1 and 2 and comparative examples can consider that the birefringence is comparable due to the fluctuation in refractive index measurement, maintaining good optical characteristics.
The clearing point is related to the type and chain length of the liquid crystal monomer, and the higher the clearing point is, the wider the application temperature range of the product is, and the better the low-temperature stability and the high-temperature stability are. The liquid crystal compositions of examples 1 and 2 of the present application have a clearing point greater than that of the comparative example, and both low temperature stability and high temperature stability are superior to those of the comparative example.
The foregoing has provided a detailed description of embodiments of the application, with specific examples being set forth herein to provide a thorough understanding of the application. Meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.
Claims (4)
1. A liquid crystal composition comprising:
The mass fraction of the first component is 10-50%, and the first component is selected from the following compounds (1) and (2);
the mass fraction of the second component is 10-30%, and the second component is selected from the following compounds (3) and (4);
A third component with mass fraction of 1% -10%, wherein the third component is selected from the following compounds (5);
a fourth component with mass fraction of 1% -30%, wherein the fourth component is selected from the following compounds (6), compounds (7) and compounds (8);
A fifth component with mass fraction of 1% -30%, wherein the fifth component is selected from the following compounds (9) and (10);
A sixth component with mass fraction of 1% -10%, wherein the sixth component is selected from the following compounds (11); and
A seventh component with mass fraction of 1% -10%, wherein the seventh component is selected from the following compounds (12);
2. A liquid crystal composition according to claim 1,
The mass fraction of the first component is 20% -40%;
the mass fraction of the second component is 10% -25%;
the mass fraction of the third component is 1% -10%;
the mass fraction of the fourth component is 10% -25%;
the mass fraction of the fifth component is 10% -25%;
The mass fraction of the sixth component is 1% -10%;
the mass fraction of the seventh component is 1% -10%.
3. A liquid crystal composition according to claim 1,
The mass fraction of the first component is 28% -38%;
the mass fraction of the second component is 15% -20%;
the mass fraction of the third component is 2% -6%;
the mass fraction of the fourth component is 15% -22%;
the mass fraction of the fifth component is 15% -20%;
the mass fraction of the sixth component is 1% -5%;
The mass fraction of the seventh component is 2% -7%.
4. A liquid crystal display panel, comprising:
An array substrate;
The opposite substrate is arranged opposite to the array substrate; and
A liquid crystal layer comprising the liquid crystal composition according to any one of claims 1 to 3.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0735015A2 (en) * | 1995-03-31 | 1996-10-02 | Chisso Corporation | A liquid crystal compound having (a) deuterium atom (s) and a liquid crystal composition comprising the said compound |
| CN111040777A (en) * | 2019-12-16 | 2020-04-21 | 西安近代化学研究所 | Liquid crystal composition and display element thereof |
| CN112980462A (en) * | 2019-12-30 | 2021-06-18 | 石家庄诚志永华显示材料有限公司 | Liquid crystal composition, liquid crystal display element and liquid crystal display |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0735015A2 (en) * | 1995-03-31 | 1996-10-02 | Chisso Corporation | A liquid crystal compound having (a) deuterium atom (s) and a liquid crystal composition comprising the said compound |
| CN111040777A (en) * | 2019-12-16 | 2020-04-21 | 西安近代化学研究所 | Liquid crystal composition and display element thereof |
| CN112980462A (en) * | 2019-12-30 | 2021-06-18 | 石家庄诚志永华显示材料有限公司 | Liquid crystal composition, liquid crystal display element and liquid crystal display |
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