CN107418595B - A kind of negative dielectric anisotropy liquid crystal composition containing terphenyl structure and application - Google Patents
A kind of negative dielectric anisotropy liquid crystal composition containing terphenyl structure and application Download PDFInfo
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- CN107418595B CN107418595B CN201610346360.6A CN201610346360A CN107418595B CN 107418595 B CN107418595 B CN 107418595B CN 201610346360 A CN201610346360 A CN 201610346360A CN 107418595 B CN107418595 B CN 107418595B
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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
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- 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
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/12—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
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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
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/12—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
- C09K2019/121—Compounds containing phenylene-1,4-diyl (-Ph-)
- C09K2019/123—Ph-Ph-Ph
Abstract
The present invention relates to a kind of negative dielectric anisotropy liquid crystal composition containing terphenyl structure, comprising at least one of compound representated by general formula I, while at least one of compound representated by II, at least one of compound representated by general formula III；
Description
Technical field
The invention belongs to liquid crystal technology fields, and in particular to a kind of negative dielectric anisotropy liquid crystal containing terphenyl structure
Composition and application.
Background technique
Currently, liquid crystal is widely applied in field of information display, while the application in optical communication also achieves one
Fixed progress (S.T.Wu, D.K.Yang.Reflective Liquid Crystal Displays.Wiley, 2001).It is close several
Year, the application field of liquid-crystal compounds significantly widens kinds of displays part, electro-optical device, electronic component, sensor etc.,
Nematic liquid crystal compound obtains most commonly used application in flat-panel monitor, especially for tft active matrix
In system.
Currently, negative liquid crystal is widely used in large-sized TV liquid crystal display, the especially appearance of PSVA technology,
So that negative liquid crystal is more welcome；In recent years, the display of the mobile devices such as mobile phone is widely used negative liquid crystal FFS and shows
The energy consumed by LCD backlight can be greatly reduced because it is with high transmitance in device, promote the aobvious of liquid crystal display
Show quality, extends the cruise duration of mobile device.
Negative liquid crystal is most proposed earlier than the end of the eighties in last century, is mainly used for VA mode, major advantage is to compare
Degree is high, and major defect is that visual angle is small, and the response time is slow.With the development of display technology, the technologies such as MVA, PVA, PSVA go out in succession
It is existing, solve the problems, such as response time and visual angle.In recent years, as touch screen becomes the mobile device market mainstream, IPS and FFS
The hard panel type display of class has inborn advantage, IPS and FFS class display both can be used positivity liquid crystal, negativity also can be used
Liquid crystal is bent electric field as present in the class display, and positivity liquid crystal is arranged along electric field line direction, curved so as to cause molecule
Song, and decline in transmitance；Negative liquid crystal is arranged perpendicular to electric field line direction, thus transmitance can be substantially improved, and be current
It promotes transmitance, reduce backlight power consumption the best way.But response time problem existing for negative liquid crystal is the weight currently encountered
Hang-up, the FFS display response time slow 50% or more using the FFS display of negative liquid crystal relative to positivity liquid crystal.
Therefore, the response time for how promoting negative liquid crystal becomes current key problem.
Specifically, the response time of liquid crystal display depends on d2γ1/Keff(d is thickness of liquid crystal layer, and γ 1 is liquid crystal rotation
Viscosity, Keff are effective elastic constant), therefore, reducing rotary viscosity, reduce thickness of liquid crystal layer and promote elastic constant can be with
Achieve the purpose that improve the response time, thickness of liquid crystal layer depends on the design of liquid crystal display；For liquid-crystal composition, rotation is reduced
Turn viscosity and thickness of liquid crystal is most effective.
Summary of the invention
The object of the present invention is to provide a kind of with low rotary viscosity, can be effectively reduced the liquid crystal display response time
Liquid-crystal composition adopt the following technical scheme that achieve the goals above
A kind of negative dielectric anisotropy liquid crystal composition containing terphenyl structure, the liquid-crystal composition include general formula I institute
At least one of representation compound, while at least one of compound representated by II, in compound representated by general formula III
It is at least one；
Wherein, R4Represent C1~C12Straight chained alkyl or unbranched alkoxy；R3Represent C1~C12Straight chained alkyl；R1、R2、、
R5、R6It is independently represented each other C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；N, m are each independently
Represent 0 or 1；A1It represents:
OrA2、A3It is independently represented each other trans- Isosorbide-5-Nitrae-cyclohexyl
Or Isosorbide-5-Nitrae-phenylene.
Compound representated by general formula I be terphenyl structure compound, such compound have very big optics respectively to
It is anisotropic.
Specifically, compounds of formula I is selected from one of Formulas I A~Formulas I C or a variety of:
Wherein, R1、R2It is independently represented each other C1~C7Straight chained alkyl.
Preferably, the chemical combination of general formula I provided by the present invention is selected from one of Formulas I A1~Formulas I C4 or a variety of:
Preferably, compounds of formula I provided by the present invention be selected from Formulas I A2, IA3, IA4, IA6, IA8, IA9, IB1,
One of IB2, IB3, IC1, IC2, IC3 or a variety of.
In a liquid crystal composition, the dosage for the compound that general formula I is represented is 1-40%, preferably 2-25% or 3-10%,
Or 1-20% or 10-25% or 3-17%, further preferably 3-17%.
Compound representated by general formula II is to contain cyclohexene and 2, the liquid-crystal compounds of 3- difluoro class formation, the class formation
With biggish negative dielectric anisotropic and low rotary viscosity, the negative dielectric anisotropic of liquid-crystal composition can be effectively promoted.
Specifically, compounds of formula II is selected from one of Formula II A~Formula II E or a variety of:
Wherein, R3Represent C1~C7Straight chained alkyl；R4Represent C1~C7Straight chained alkyl or unbranched alkoxy.
Preferably, compounds of formula II is selected from one of Formula II A1~Formula II E24 or a variety of:
It is highly preferred that compounds of formula II be selected from Formula II A1, IIA2, IIA9, IIA10, IIA13, IIA14, IIA15,
IIA16、IIA18、IIB1、IIB2、IIB9、IIB10、IIB13、IIB14、IIB15、IIB16、IIB18、IIC1、IIC2、
One of IIC9, IIC10, IIC13, IIC14, IIC15, IID9, IID10, IID13, IID14, IIE6, IIE8, IIE14 or
It is a variety of.
In a liquid crystal composition, the dosage for the compound that general formula II is represented is 1-90%, preferably 20-81% or 15-
85% or 53-85% or 15-52% or 20-68% or 15-70% or 45-85%, further preferably 20-81%.
The compound that general formula III represents is twin nuclei compound, has low rotary viscosity, can reduce liquid crystal combination
The rotary viscosity of object.
Specifically, compounds of formula III provided by the present invention is selected from one of formula III A~formula III C or a variety of:
R5Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl, R6Represent C1~C7Straight chained alkyl, straight chain alcoxyl
Base or C2~C7Straight-chain alkenyl.
Preferably, compounds of formula III provided by the present invention is selected from one of formula III A1~formula III C24 or more
Kind:
It is highly preferred that compounds of formula III provided by the present invention be selected from formula III A2, IIIA6, IIIA14,
One of IIIA18, IIIA22, IIIA23, IIIA28, IIIB10, IIIB14, IIIC2, IIIC4, IIIC15, IIIC20 or
It is a variety of.
In liquid-crystal composition, the dosage for the compound that general formula III represents is 1-60%, preferably 9-50% or 5-55%,
Or 28-50% or 5-29% or 20-55%, further preferably 9-50%.
Liquid-crystal composition provided by the present invention also includes one or more compounds of formula IV:
Wherein, R7Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl；R8Represent C1~C12Straight chained alkyl or
Unbranched alkoxy；A4Represent trans- Isosorbide-5-Nitrae-cyclohexyl or Isosorbide-5-Nitrae-phenylene.
Compounds of formula IV provided by the present invention is tricyclic structure neutral compound, which has lower rotation
Turn viscosity and higher clearing point.
Specifically, compound representated by general formula IV provided by the present invention is selected from one of formula IV A and formula IV B or more
Kind:
Wherein, R7Represent C2~C7Straight chained alkyl or straight-chain alkenyl, R8Represent C1~C7Straight chained alkyl.
Preferably, compounds of formula IV is selected from one of IVA1~IVB20 or a variety of:
It is highly preferred that compounds of formula IV be selected from formula IV A2, IVA6, IVA10, IVA13, IVA16, IVB2, IVB6,
One of IVB8, IVB15, IVB17 or a variety of.
In liquid-crystal composition, the dosage of the compound of Formula IVIV is 0-40%, preferably 0-25% or 0-20%,
Or 0-15% or 3-20% or 1-25%.
Specifically, liquid-crystal composition provided by the present invention includes the compound of following weight percent:
(1), compound representated by 1~40% general formula I；
(2), compound representated by 1~90% general formula II；
(3), compound representated by 1~60% general formula III；
(4), compound representated by 0~40% general formula IV.
Preferably, liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 2~25% general formula I；
(2), compound representated by 15~85% general formula II；
(3), compound representated by 5~55% general formula III；
(4), compound representated by 0~25% general formula IV.
It is highly preferred that liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 3~20% general formula I；
(2), compound representated by 20~81% general formula II；
(3), compound representated by 9~50% general formula III；
(4), compound representated by 0~20% general formula IV.
Preferably, liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 1~20% general formula I；
(2), compound representated by 15~85% general formula II；
(3), compound representated by 5~55% general formula III；
(4), compound representated by 0~25% general formula IV.
It is highly preferred that liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 3~10% general formula I；
(2), compound representated by 20~81% general formula II；
(3), compound representated by 9~50% general formula III；
(4), compound representated by 0~20% general formula IV.
Preferably, liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 10~25% general formula I；
(2), compound representated by 15~85% general formula II；
(3), compound representated by 5~55% general formula III；
(4), compound representated by 0~25% general formula IV.
It is highly preferred that liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 10~20% general formula I；
(2), compound representated by 20~81% general formula II；
(3), compound representated by 5~55% general formula III；
(4), compound representated by 0~25% general formula IV.
Preferably, liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 2~20% general formula I；
(2), compound representated by 53~85% general formula II；
(3), compound representated by 5~40% general formula III.
It is highly preferred that liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 3~17% general formula I；
(2), compound representated by 53~81% general formula II；
(3), compound representated by 9~35% general formula III.
Preferably, liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 3~25% general formula I；
(2), compound representated by 15~52% general formula II；
(3), compound representated by 20~55% general formula III；
(4), compound representated by 0~25% general formula IV.
It is highly preferred that liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 5~20% general formula I；
(2), compound representated by 20~52% general formula II；
(3), compound representated by 24~50% general formula III；
(4), compound representated by 0~20% general formula IV.
Preferably, liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 3~25% general formula I；
(2), compound representated by 15~70% general formula II；
(3), compound representated by 28~55% general formula III；
(4), compound representated by 0~25% general formula IV.
It is highly preferred that liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 4~20% general formula I；
(2), compound representated by 20~68% general formula II；
(3), compound representated by 28~50% general formula III；
(4), compound representated by 0~20% general formula IV.
Preferably, liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 2~25% general formula I；
(2), compound representated by 45~85% general formula II；
(3), compound representated by 5~29% general formula III；
(4), compound representated by 0~15% general formula IV.
It is highly preferred that liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 3~20% general formula I；
(2), compound representated by 51~81% general formula II；
(3), compound representated by 9~29% general formula III；
(4), compound representated by 0~13% general formula IV.
Preferably, liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 2~25% general formula I；
(2), compound representated by 30~85% general formula II；
(3), compound representated by 5~50% general formula III.
It is highly preferred that liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 3~20% general formula I；
(2), compound representated by 34~81% general formula II；
(3), compound representated by 9~46% general formula III.
Preferably, liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 3~15% general formula I；
(2), compound representated by 15~55% general formula II；
(3), compound representated by 20~55% general formula III；
(4), compound representated by 1~25% general formula IV.
It is highly preferred that liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 5~11% general formula I；
(2), compound representated by 20~52% general formula II；
(3), compound representated by 24~50% general formula III；
(4), compound representated by 3~20% general formula IV.
Preferably, liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 3~17% general formula I；
(2), compound representated by 20~81% general formula II；
(3), compound representated by 9~50% general formula III.
Preferably, liquid-crystal composition provided by the present invention includes the component of following mass percent:
(1), compound representated by 3~17% general formula I；
(2), compound representated by 20~81% general formula II；
(3), compound representated by 9~50% general formula III；
(4), compound representated by 3~20% general formula IV.
The preparation method of liquid-crystal composition of the present invention can be used conventional method and change two or more without specifically limited
It closes object mixing to be produced, such as the method preparation by mixing different component at high temperature and being soluble in one another, wherein by liquid crystal group
It closes object to dissolve in solvent in the solvent used for the compound and mix, then distills out the solvent under reduced pressure；Or it is of the present invention
Liquid-crystal composition can be prepared conventionally, such as wherein the lesser component of content will be dissolved in content at a higher temperature
In biggish main component, or each affiliated component dissolved in organic solvent, such as acetone, chloroform or methanol, it then will be molten
It is obtained after liquid mixing removal solvent.
Liquid-crystal composition of the present invention has low rotary viscosity, can be used for the fast-response liquid crystal of plurality of display modes
Show, the use in the VA such as VA, MVA, PVA, PSVA mode display or IPS, FFS mode display can be obviously improved liquid crystal
Display display effect.
Preferably, liquid-crystal composition provided by the present invention also includes the polymerizable compound of one or more general formula V:
Wherein, A5、A61,4- cyclohexyl, 1,4- phenylene, 1-4 hydrogen atom is independently represented each other to be optionally substituted by halogen
1,4- phenylene；X is independently represented each other 0,1 or 2；SP1、SP2It is independently represented each other polymerizable groups.
Specifically, compounds of formula V provided by the present invention is selected from one of Formula V A~Formula V F or a variety of:
Wherein, SP1、SP2It is independently represented each other acrylate-based, methacrylate, butenoic acid ester group or C2~C8
Straight-chain alkenyl.
It is highly preferred that the polymerizable compound of general formula V provided by the present invention be selected from one of Formula V A1~Formula V F3 or
It is a variety of:
It is highly preferred that polymerizable compound provided by the present invention is selected from one of Formula V B2, VC2, VD2, VF2 or more
Kind.
It is particularly preferred that the weight of the polymerizable compound of general formula V provided by the present invention is liquid-crystal composition weight
0.1~5%；Liquid-crystal composition provided by the present invention comprising polymerizable compound is suitable for PSVA liquid crystal display.
Ground provided by the present invention compounds of formula I is Terphenyls structural compounds, due to the influence of conjugation, such list
Absorption peak red shift of the body to light, has big absorption peak near 365nm, and for quickly absorbing UV light energy, being transferred to can gather
Polymerisable compounds play very important effect, can speed up polymerizable compound polymerization, improve the polymerization effect of polymerizable compound
Rate can effectively promote the efficiency of PSVA production process.On the other hand, based on the pursuit to fast response time, PSVA liquid crystal
More and more IIIA2 structural compounds are added in composition, since the compound is alkenes structure, can gather under UV illumination
It closes, causes liquid-crystal composition rotten, the Terphenyls structure of addition general formula I will effectively can be transferred to polymerizable after UV light absorption
On monomer, avoids IIIA2 monocrystalline from being rung by UV shadow, improve the quality of liquid crystal display.
It is involved in the present invention to compound be known compound, it is commercially available acquisition or by Bayi Space liquid crystal share section
Skill Co., Ltd provides.
On the basis of common knowledge of the art, above-mentioned each optimum condition can be combined with each other each preferably to get the present invention
Embodiment.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Unless otherwise indicated, percentage is weight percentage in the present invention；Temperature unit is degree Celsius；Δ n represents optics
Anisotropy (25 DEG C)；ε∥And ε⊥Respectively represent parallel and vertical dielectric constant (25 DEG C, 1000Hz)；Δ ε represent dielectric respectively to
Anisotropic (25 DEG C, 1000Hz)；γ 1 represents rotary viscosity (mPa.s, 25 DEG C)；Cp represents the clearing point (DEG C) of liquid-crystal composition；
K11、K22、K33Respectively represent splay, distortion and bend elastic constant (pN, 25 DEG C).
In following embodiment, unit structure code shown in table 1 is indicated in liquid-crystal compounds.
Table 1: the group structure code of liquid-crystal compounds
By taking following compound structure as an example:
It indicates are as follows: 3CSWO2
It indicates are as follows: 2PGP3
In following embodiment, the preparation of liquid-crystal composition is all made of heat of solution method, comprising the following steps: is pressed with balance
Weight percent weighs liquid-crystal compounds, wherein weighing addition sequence without particular requirement, usually with liquid-crystal compounds fusing point by height
Mixing is successively weighed to low sequence, heating stirring melts each component uniformly at 60~100 DEG C, using filter, rotate,
It finally encapsulates up to target sample.
In following embodiment, the performance parameter of the weight percent of each component when liquid-crystal composition is shown in liquid-crystal composition
Following table.
Embodiment 1
Table 2: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 2
Table 3: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 3
Table 4: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 4
Table 5: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 5
Table 6: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 6
Table 7: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 7
Table 8: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 8
Table 9: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 9
Table 10: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 10
Table 11: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 11
Table 12: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 12
Table 13: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 13
Table 14: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 14
Table 15: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 15
Table 16: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 16
Table 17: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 17
Table 18: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 18
Table 19: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 19
Table 20: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 20
Table 21: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 21
Table 22: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 22
Table 23: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 23
Table 24: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 24
Table 25: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 25
Table 26: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 26
Table 27: the weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 27
Table 28: the weight percent of each component when performance parameter in liquid-crystal composition
Comparative example 1
Table 29: the weight percent of each component when performance parameter in liquid-crystal composition
Compared with embodiment 1 is summarized with each performance parameter value of 1 gained liquid-crystal composition of comparative example, referring to table 30.
Table 30: the performance parameter of liquid-crystal composition compares
| Δn | Δε | Cp | γ1 | K11 | K22 | K33 | |
| Embodiment 1 | 0.110 | -3.9 | 90 | 83 | 15.4 | 7.7 | 16.5 |
| Comparative example 1 | 0.108 | -3.8 | 90 | 96 | 14.7 | 7.4 | 16.5 |
Known to relatively: compared with comparative example 1, the liquid-crystal composition that embodiment 1 provides has low rotary viscosity, that is, has
There is the faster response time.
Embodiment 28
Table 31: the weight percent of each component when performance parameter in liquid-crystal composition
Polymerizable compound VIB2 is added in above-mentioned nematic liquid crystal by 0.5% mass percent, is configured to PB28's
PSVA mixture.
Nematic liquid crystal and PSVA mixture PB28 are filled in standard VA testing cassete, applied with UV (100mw/cm2)
It is irradiated under the voltage of 10V one minute, tests pre-tilt angle, threshold voltage and response time respectively.Test result is shown in Table 32:
Table 32: threshold voltage and response time test result
Compared with corresponding nematic liquid crystal, the liquid-crystal compounds threshold voltage drop after polymerisation with polymerizable compound
Low, the response time accelerates, it will be apparent that promotes the response time of liquid crystal display.
Embodiment 29
Table 33: the weight percent of each component when performance parameter in liquid-crystal composition
Polymerizable compound VIC2 is added in above-mentioned nematic liquid crystal by 0.5% mass percent, is configured to PC29's
PSVA mixture.
Nematic liquid crystal and PSVA mixture PC29 are filled in standard VA testing cassete, applied with UV (100mw/cm2)
It is irradiated under the voltage of 10V one minute, tests pre-tilt angle, threshold voltage and response time respectively.Test result is shown in Table 34:
Table 34: threshold voltage and response time test result
| Project | titl(°) | V10(V) | T(ms) |
| N29 | 89.6 | 2.54 | 14.8 |
| PC29 | 83.1 | 2.23 | 6.0 |
Compared with corresponding nematic liquid crystal, the liquid-crystal compounds threshold voltage drop after polymerisation with polymerizable compound
Low, the response time accelerates, it will be apparent that promotes the response time of liquid crystal display.
Embodiment 30
Table 35: the weight percent of each component when performance parameter in liquid-crystal composition
Polymerizable compound VIE2 is added in above-mentioned nematic liquid crystal by 0.5% mass percent, is configured to PE30's
PSVA mixture.
Nematic liquid crystal and PSVA mixture PE30 are filled in standard VA testing cassete, with UV (100mw/cm2) applying
It is irradiated under the voltage of 10V one minute, tests pre-tilt angle, threshold voltage and response time respectively.Test result is shown in Table 36:
Table 36: threshold voltage and response time test result
| Project | titl(°) | V10(V) | T(ms) |
| N30 | 89.8 | 2.88 | 14.3 |
| PE30 | 81.1 | 2.38 | 5.1 |
Compared with corresponding nematic liquid crystal, the liquid-crystal compounds threshold voltage drop after polymerisation with polymerizable compound
Low, the response time accelerates, it will be apparent that promotes the response time of liquid crystal display.
Comparative example 2
Table 37: the weight percent of each component when performance parameter in liquid-crystal composition
Polymerizable compound VIE2 is added in above-mentioned nematic liquid crystal by 0.5% mass percent, is configured to PE to 2
PSVA mixture.
Nematic liquid crystal and PSVA mixture PE are filled in standard VA testing cassete to 2, with UV (100mw/cm2) applying
After irradiating different time under the voltage of 10V, pre-tilt angle, threshold voltage and response time are tested respectively.Test result is shown in Table 38:
Table 38: threshold voltage and response time test result
Comparative example 30 and comparison 2 are it can be found that the polymerization time of embodiment 30 is obviously short compared with comparative example 2, significantly
Promote the production efficiency of PSVA display.
Negative dielectric anisotropy liquid crystal composition provided by the present invention have low rotary viscosity, high resistivity and
Excellent photostability and thermal stability is suitable for VA type liquid crystal display or IPS the and FFS type liquid such as VA, MVA, PVA, PSVA
Crystal display can effectively improve the response time of liquid crystal display.
Although above the present invention is described in detail with a general description of the specific embodiments,
On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements, fall within the scope of the claimed invention without departing from theon the basis of the spirit of the present invention.
Claims (23)
1. a kind of negative dielectric anisotropy liquid crystal composition containing terphenyl structure, it is characterised in that: the liquid-crystal composition
Compound comprising following weight percent:
(1), compound representated by 3~25% general formula I；
(2), compound representated by 15~52% general formula II；
(3), compound representated by 20~55% general formula III；
(4), compound representated by 0~25% general formula IV；
Or, the liquid-crystal composition includes the compound of following weight percent:
(1), compound representated by 4~20% general formula I；
(2), compound representated by 20~68% general formula II；
(3), compound representated by 28~50% general formula III；
(4), compound representated by 0~20% general formula IV；
Or, the liquid-crystal composition includes the compound of following weight percent:
(1), compound representated by 3~15% general formula I；
(2), compound representated by 15~55% general formula II；
(3), compound representated by 20~55% general formula III；
(4), compound representated by 1~25% general formula IV；
Wherein, each general formula structure is as follows:
Wherein, R4Represent C1~C12Straight chained alkyl or unbranched alkoxy；R3Represent C1~C12Straight chained alkyl；R1、R2、R5、R6
It is independently represented each other C1~C12Straight chained alkyl, unbranched alkoxy or C2~C12Straight-chain alkenyl；N, m are independently represented each other
0 or 1；
A1It represents:
A2、A3It is independently represented each other trans- Isosorbide-5-Nitrae-cyclohexyl or 1,
4- phenylene；
At least one of compound representated by general formula IV:
Wherein, R7Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl；R8Represent C1~C12Straight chained alkyl or straight chain
Alkoxy；A4Represent trans- Isosorbide-5-Nitrae-cyclohexyl or Isosorbide-5-Nitrae-phenylene.
2. liquid-crystal composition according to claim 1, it is characterised in that: compounds of formula I is in Formulas I A~Formulas I C
It is one or more:
Wherein, R1、R2It is independently represented each other C1~C7Straight chained alkyl.
3. liquid-crystal composition according to claim 2, which is characterized in that the chemical combination of general formula I is in Formulas I A1~Formulas I C4
It is one or more:
4. liquid-crystal composition according to claim 3, which is characterized in that compounds of formula I be selected from Formulas I A2, IA3,
One of IA4, IA6, IA8, IA9, IB1, IB2, IB3, IC1, IC2, IC3 or a variety of.
5. liquid-crystal composition according to claim 1 or 2, it is characterised in that: compounds of formula II is selected from Formula II A~formula
One of IIE or a variety of:
Wherein, R3Represent C1~C7Straight chained alkyl；R4Represent C1~C7Straight chained alkyl or unbranched alkoxy.
6. liquid-crystal composition according to claim 5, which is characterized in that compounds of formula II is selected from Formula II A1~formula
One of IIE24 or a variety of:
7. liquid-crystal composition according to claim 6, which is characterized in that compounds of formula II be selected from Formula II A1, IIA2,
IIA9、IIA10、IIA13、IIA14、IIA15、IIA16、IIA18、IIB1、IIB2、IIB9、IIB10、IIB13、IIB14、
IIB15、IIB16、IIB18、IIC1、IIC2、IIC9、IIC10、IIC13、IIC14、IIC15、IID9、IID10、IID13、
One of IID14, IIE6, IIE8, IIE14 or a variety of.
8. liquid-crystal composition according to claim 1-4, it is characterised in that: compounds of formula III is selected from formula
One of IIIA~formula III C or a variety of:
R5Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl, R6Represent C1~C7Straight chained alkyl, unbranched alkoxy or C2
~C7Straight-chain alkenyl.
9. liquid-crystal composition according to claim 5, which is characterized in that compounds of formula III is selected from formula III A~formula
One of IIIC or a variety of:
R5Represent C1~C7Straight chained alkyl or C2~C7Straight-chain alkenyl, R6Represent C1~C7Straight chained alkyl, unbranched alkoxy or C2
~C7Straight-chain alkenyl.
10. liquid-crystal composition according to any one of claims 1 to 4, which is characterized in that compounds of formula III is selected from
One of formula III A1~formula III C24 or a variety of:
11. liquid-crystal compounds according to claim 10, which is characterized in that compounds of formula III be selected from formula III A2,
IIIA6、IIIA14、IIIA18、IIIA22、IIIA23、IIIA28、IIIB10、IIIB14、IIIC2、IIIC4、IIIC15、
One of IIIC20 or a variety of.
12. liquid-crystal composition according to claim 1, it is characterised in that: compound representated by general formula IV is selected from formula IV A
With one of IVB or a variety of:
Wherein, R7Represent C2~C7Straight chained alkyl or straight-chain alkenyl, R8Represent C1~C7Straight chained alkyl.
13. liquid-crystal composition according to claim 12, which is characterized in that compounds of formula IV be selected from IVA1~
One of IVB20 or a variety of:
14. liquid-crystal composition according to claim 13, which is characterized in that compounds of formula IV be selected from formula IV A2,
One of IVA6, IVA10, IVA13, IVA16, IVB2, IVB6, IVB8, IVB15, IVB17 or a variety of.
15. liquid-crystal composition according to claim 1, which is characterized in that the component comprising following mass percent:
(1), compound representated by 5~20% general formula I；
(2), compound representated by 20~52% general formula II；
(3), compound representated by 24~50% general formula III；
(4), compound representated by 0~20% general formula IV.
16. liquid-crystal composition according to claim 1, which is characterized in that the component comprising following mass percent:
(1), compound representated by 5~11% general formula I；
(2), compound representated by 20~52% general formula II；
(3), compound representated by 24~50% general formula III；
(4), compound representated by 3~20% general formula IV.
17. liquid-crystal composition according to claim 1, it is characterised in that: also polymerizable comprising one or more general formula V
Compound:
Wherein, A5、A6It is independently represented each other the 1,4- that 1,4- cyclohexyl, 1,4- phenylene, 1-4 hydrogen atom are optionally substituted by halogen
Phenylene；X represents 0,1 or 2；SP1、SP2It is independently represented each other polymerizable groups.
18. liquid-crystal composition according to claim 17, it is characterised in that: compounds of formula V is selected from Formula V A~Formula V F
One of or it is a variety of:
Wherein, SP1、SP2It is independently represented each other acrylate-based, methacrylate, butenoic acid ester group or C2~C8It is straight
Alkenyl.
19. liquid-crystal composition according to claim 18, which is characterized in that general formula V polymerizable compound be selected from Formula V A1~
One of Formula V F3 or a variety of:
20. liquid-crystal composition according to claim 19, which is characterized in that polymerizable compound be selected from Formula V B2, VC2,
One of VD2, VF2 or a variety of.
21. the application of the described in any item liquid-crystal compositions of claim 1-20 in a liquid crystal display.
22. application according to claim 21, which is characterized in that the described in any item liquid-crystal compositions of claim 1-21
For in VA mode display or IPS, FFS mode display.
23. application according to claim 22, which is characterized in that the VA mode display is VA, MVA, PVA, PSVA.
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| CN103459554A (en) * | 2011-03-29 | 2013-12-18 | 默克专利股份有限公司 | Liquid-crystalline medium |
| CN104818029A (en) * | 2013-12-19 | 2015-08-05 | 默克专利股份有限公司 | Liquid crystalline medium |
| WO2015139827A1 (en) * | 2014-03-17 | 2015-09-24 | Merck Patent Gmbh | Liquid crystal medium |
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| CN103459554A (en) * | 2011-03-29 | 2013-12-18 | 默克专利股份有限公司 | Liquid-crystalline medium |
| CN103320142A (en) * | 2012-02-15 | 2013-09-25 | 默克专利股份有限公司 | Liquid-crystalline medium |
| CN104818029A (en) * | 2013-12-19 | 2015-08-05 | 默克专利股份有限公司 | Liquid crystalline medium |
| WO2015139827A1 (en) * | 2014-03-17 | 2015-09-24 | Merck Patent Gmbh | Liquid crystal medium |
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