CN107312551A - A kind of wide range Mesophase Liquid Crystals composition and its application - Google Patents
A kind of wide range Mesophase Liquid Crystals composition and its application Download PDFInfo
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- CN107312551A CN107312551A CN201610269051.3A CN201610269051A CN107312551A CN 107312551 A CN107312551 A CN 107312551A CN 201610269051 A CN201610269051 A CN 201610269051A CN 107312551 A CN107312551 A CN 107312551A
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- 0 *C(CC1)CCC1C(CC1)CCC1c(cc1)ccc1-c1cc(*)c(*)cc1 Chemical compound *C(CC1)CCC1C(CC1)CCC1c(cc1)ccc1-c1cc(*)c(*)cc1 0.000 description 5
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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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- 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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Abstract
The present invention relates to a kind of wide warm liquid-crystal composition, the liquid-crystal composition includes compound, the compound representated by least one formula II, the compound representated by least one general formula III and the compound representated by least one formula VI or/and formula V representated by least one formula I；Acted synergistically between above each component, it can be ensured that the liquid-crystal composition has low rotary viscosity, big elastic constant, good low temperature intersolubility and fast response speed.The liquid-crystal composition that the present invention is provided can be used for the fast-response liquid crystal display of plurality of display modes, and its use in TN, IPS or FFS mode display can be obviously improved liquid crystal display display effect；Be particularly suitable for use in wide-temperature LCD；It is particularly suitable for use in vehicle-mounted liquid crystal display.
Description
Technical field
The present invention relates to field of liquid crystals, and in particular to a kind of to have wide liquid crystal phase temperature range and fast-response time
Liquid-crystal composition.
Background technology
At present, liquid crystal is widely applied in field of information display, while the application in optical communication is also obtained
Certain progress (S.T.Wu, D.K.Yang.Reflective Liquid Crystal Displays.Wiley, 2001).
In recent years, the application field of liquid-crystal compounds significantly widened kinds of displays part, electro-optical device, electronics
Element, sensor etc., nematic liquid crystal compound obtain most commonly used application in flat-panel monitor,
Particularly in the system of tft active matrix.
Liquid crystal display experienced very long road for development with the discovery of liquid crystal.Austrian botanist in 1888
Friedrich Reinitzer are found that the first liquid crystal material benzoic acid cholesterol (cholesteryl
benzoate).Manguin has invented rubbing within 1917, each to make single domain liquid crystal and research optics
Anisotropy.E.Bose in 1909 establishes moving (Swarm) theory, and obtain L.S.Ormstein and
(1918) are supported in F.Zernike et al. experiment, and statistical fluctuation is discussed as by De Gennes.
G.W.Oseen and H.Zocher founded continuum theory in 1933, and obtained F.C.Frank perfect (1958
Year).M.Born (1916) and K.Lichtennecker (nineteen twenty-six) has found and have studied the dielectric of liquid crystal
Anisotropy.1932, nematic phase was divided into the positive and negative major class of property two by W.Kast accordingly.Nineteen twenty-seven,
V.Freedericksz and V.Zolinao has found that nematic liquid crystal under electric field or magnetic fields, is deformed upon and deposited
In voltage threshold (Freederichsz transformations).This making for being found to be liquid crystal display provides foundation.
Nineteen sixty-eight RCA Corp. of U.S. R.Williams has found that nematic liquid crystal forms striped farmland under electric field action,
And have light scattering phenomenon.With dynamic scattering display pattern is developed into and the world is made in G.H.Heilmeir
Upper first liquid crystal display (LCD).Early seventies, Helfrich and Schadt have invented TN principles, people
Be combined using TN photoelectric effect and integrated circuit, made display device (TN-LCD), be liquid crystal
Application opened up wide prospect.Since the seventies, due to large scale integrated circuit and the hair of liquid crystal material
Exhibition, application of the liquid crystal in terms of display achieves breakthrough development, 1983~1985 years T.Scheffer et al.
Successively propose super-twist nematic (Super Twisred Nematic：STN) pattern and P.Brody are 1972
Active matrix (the Active matrix that year proposes：AM) mode is used again.Traditional TN-LCD skills
Art has developed into STN-LCD and TFT-LCD technologies, although STN number of scanning lines up to 768 rows more than,
It is the problems such as remaining response speed, visual angle and gray scale when the temperature increases, therefore large area, Gao Xin
Breath amount, colored display use Active Matrix LCD At mode mostly.TFT-LCD be widely used for direct viewing type TV,
Large-curtain projecting TV set, terminal are shown and some military instrument are shown, it is believed that TFT-LCD technologies have
More wide application prospect.
Wherein " active matrix " includes two types：1st, the OMS (metals on the silicon wafer as substrate
Oxide semiconductor) or other diodes.2nd, on the glass plate as substrate thin film transistor (TFT) (TFT).
Monocrystalline silicon limits display size as substrate material, because each several part display device even module assembled exists
There are many problems in its junction.Thus, second of thin film transistor (TFT) is the promising active matrix type of tool,
The photoelectric effect utilized is typically TN effects.TFT includes compound semiconductor, such as Cdse, or with polycrystalline or
TFT based on amorphous silicon.
Liquid crystal display has the advantages that display effect is good, cost is low, therefore, and liquid crystal display turns into vehicle-mounted production
The main flow of product, still, vehicle-mounted product need the operating temperature range of non-constant width and fast response time, liquid crystal
Show that device is limited to liquid crystal itself (liquid crystalline phase being presented in certain temperature, low-temperature rotary viscosity is big), so fast ring
The warm liquid crystal of width answered turns into the critical material of vehicle LCD.
The content of the invention
The present invention provides a kind of liquid-crystal composition, and said composition has high clearing point, low fusing point and low
Rotary viscosity, has the fast response time applied to liquid crystal display, it is adaptable to wide-temperature LCD, especially
Suitable for vehicle LCD.
Specifically, the invention provides a kind of wide warm liquid-crystal composition, the liquid-crystal composition includes at least one
Plant the compound representated by formula I, the compound representated by least one formula II, at least one general formula III institute's generation
The compound of table and the compound representated by least one formula VI or/and formula V.
The compound representated by formula I that the present invention is provided is to contain 2- methyl -3,4,5- trifluoro-benzenes structure and difluoro
The polar compound of methoxyl group bridged bond, the structure has big dielectric anisotropy.The liquid crystal group that the present invention is provided
In compound, preferably each liquid crystal components sum is 100%；The content of compound in the composition is preferred described in formula I
For 5~50%, more preferably 10~35%, more preferably 16~30% or 24%.
The formula I is specially：
In the formula I, R1Represent C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2Can be with
Replaced by O, S or CH=CH；
Ring A is represented：
L1For H or F；N represents 0 or 1.
Preferably, the compound that formula I is represented is selected from one kind or several of the compound representated by formula IA~formula IE
Kind：
In the formula IA~formula IE, R1C is represented independently of one another1~C7Straight chained alkyl.
It is highly preferred that formula I represent compound be selected from IA1~IA4, IB1~IB4, IC1~IC4, ID1~ID4,
One or more in IE1~IE4：
It is further preferred that compound representated by formula I provided by the present invention be selected from IA1, IA2, IB2,
One or more in IB3, IC1, IC2, ID1, ID2, IE2, IE3.
The compound twin nuclei representated by formula II that the present invention is provided, the structure has low rotary viscosity.
In the liquid-crystal composition that the present invention is provided, preferably each liquid crystal components sum is 100%；Compound described in formula II exists
Content in composition is preferably 20~60%, and more preferably 35~55%, more preferably 43~53%, 43%
Or 45~53%.The formula II is specially：
In the formula II, R2、R3C is represented independently of one another1~C12Straight chained alkyl, wherein one or more
Non-conterminous CH2It can be replaced by O, S or CH=CH；Ring B, ring C represent trans 1,4- independently of one another
Cyclohexyl or 1,4- phenylenes.
Preferably, the compound representated by the formula II is selected from one kind of formula IIA~representation compound described in IIB
Or it is a variety of：
In the formula IIA and formula IIB, R2C is represented independently of one another1~C7Straight chained alkyl；R3Each solely
On the spot represent C1~C7Straight chained alkyl, unbranched alkoxy or C2~C7Straight-chain alkenyl.
It is furthermore preferred that one kind in IIA1~IIA30, IIB1~IIB24 of the compound representated by formula II or
It is several：
It is further preferred that compound representated by formula II be selected from IIA1, IIA2, IIB2, IIB4, IIB15,
One or more in IIB16.
Compound described in general formula III of the present invention be nonpolar tricyclic compound, such monomer have high clearing point and
Big elastic constant, is conducive to improving the elastic constant of liquid-crystal composition.In the liquid-crystal composition that the present invention is provided,
It is preferred that each liquid crystal components sum is 100%；The content of compound in the composition is preferably described in formula II
1~40%, more preferably 5~35%, more preferably 7~29%, 7~22%% or 29%.The general formula III
Specially：
In the general formula III, R4Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl, R5Represent C1~C12
Straight chained alkyl；Ring D represents trans Isosorbide-5-Nitrae-cyclohexyl or Isosorbide-5-Nitrae-phenylene；
Preferably, the compound representated by general formula III be selected from general formula III A~IIIB representated by compound one kind or
It is a variety of：
In the general formula III A~IIIB, R4C is represented independently of one another2~C7Straight chained alkyl or straight-chain alkenyl；
R5C is represented independently of one another1~C7Straight chained alkyl.
It is highly preferred that compound representated by general formula III in IIIA1~IIIA18, IIIB1~IIIB22 one
Plant or a variety of：
It is further preferred that compound representated by general formula III be selected from IIIA1, IIIA2, IIIA8, IIIA12,
One or more in IIIA16, IIIB3, IIIB12, IIIB16.
Compound representated by formula IV and V of the present invention is tetracyclic structure, and such compound has very high
Clearing point and larger optical anisotropy.In the composition, containing at least one formula IV and/or
Compound representated by formula V；The compound representated by least one formula IV is preferably comprised, or containing at least
A kind of compound representated by compound and at least one formula V representated by formula IV.The liquid that the present invention is provided
In crystal composite, preferably each liquid crystal components sum is 100%；Compound is in group described in formula IV and/or formula V
Content in compound is preferably 1~30%, more preferably 2~20%, more preferably 4~18%.
Compound representated by formula IV provided by the present invention is Fourth Ring neutral compound, with very high clear
Bright spot and larger optical anisotropy.In the liquid-crystal composition that the present invention is provided, preferably each liquid crystal components sum
For 100%；The content of compound in the composition described in preferred formula IV is not 0, specially 2~8%, more excellent
Elect 4~5% as.The formula IV is specially：
In the formula IV, R6、R7C is represented independently of one another1~C12Straight chained alkyl, L2Represent H or F.
Preferably, one or more of the compound representated by formula IV in formula IVA~IVB：
In the formula IVA~IVB, R6、R7C is represented independently of one another1~C7Straight chained alkyl.
It is highly preferred that the one kind of compound in IVA1~IVA10, IVB1~IVB16 representated by formula IV
Or it is a variety of：
It is further preferred that the compound of Formula IVIV is selected from one or both of IVA5 or IVB6.
Compound representated by formula V provided by the present invention is tetracyclic structure compound, with high limpid
Point.In the liquid-crystal composition that the present invention is provided, preferably each liquid crystal components sum is 100%；Change described in formula IV
The content of compound in the composition is 0~15%, preferably 0~13%, and its content can be 0, can not also be 0.
When containing compound described in formula V in the composition, its content is preferably 1~15%, more preferably
4~13%.The formula V is specially：
In the formula V, R8Represent C1~C12Straight chained alkyl, X represents F or OCF3。
Preferably, one or more of the compound representated by formula V in Formula V A or VB：
In the formula VA~VB, R8Represent C1~C12Straight chained alkyl.
It is highly preferred that the one kind or many of the compound representated by formula V in VA1~VA4, VB1~VB4
Kind：
It is further preferred that the one kind or many of the compound representated by formula V in VA1, VA2, VA3
Kind.
For specific, in order that liquid-crystal composition meets different demands, liquid crystal combination provided by the present invention
Thing includes the component of following mass percent：
Compound representated by (1) 5~50% formula I；
Compound representated by (2) 20~60% formula II；
Compound representated by (3) 1~40% general formula III；
Compound representated by (4) 1~30% formula IV and/or formula V.
Preferably, liquid-crystal composition provided by the present invention includes the component of following mass percent：
Compound representated by (1) 10~35% formula I；
Compound representated by (2) 35~55% formula II；
Compound representated by (3) 5~35% general formula III；
Compound representated by (4) 2~20% formula IV and/or formula V；
It is highly preferred that liquid-crystal composition provided by the present invention includes the component of following mass percent：
Compound representated by (1) 16~30% formula I；
Compound representated by (2) 43~53% formula II；
Compound representated by (3) 7~29% general formula III；
Compound representated by (4) 4~18% formula IV and/or formula V.
Preferably, liquid-crystal composition provided by the present invention includes the component of following mass percent：
Compound representated by (1) 10~35% formula I；
Compound representated by (2) 35~55% formula II；
Compound representated by (3) 5~35% general formula III；
Compound representated by (4) 2~8% formula IV；
Compound representated by (5) 0~15% formula V；
It is highly preferred that liquid-crystal composition provided by the present invention includes the component of following mass percent：
Compound representated by (1) 16~30% formula I；
Compound representated by (2) 43~53% formula II；
Compound representated by (3) 7~29% general formula III；
Compound representated by (4) 4~5% formula IV；
Compound representated by (5) 0~13% formula V.
Preferably, liquid-crystal composition provided by the present invention includes the component of following mass percent：
Compound representated by (1) 10~35% formula I；
Compound representated by (2) 40~55% formula II；
Compound representated by (3) 5~30% general formula III；
Compound representated by (4) 2~8% formula IV；
Compound representated by (5) 1~15% formula V；
It is highly preferred that liquid-crystal composition provided by the present invention includes the component of following mass percent：
Compound representated by (1) 16~30% formula I；
Compound representated by (2) 45~53% formula II；
Compound representated by (3) 7~22% general formula III；
Compound representated by (4) 4~5% formula IV；
Compound representated by (5) 4~13% formula V；
Or include the component of following mass percent：
Compound representated by (1) 24% formula I；
Compound representated by (2) 43% formula II；
Compound representated by (3) 29% general formula III；
Compound representated by (4) 4% formula IV.
In the liquid-crystal composition that the present invention is provided, preferably each component mass percent sum is 100%.
Compound representated by liquid-crystal composition formula of I provided by the present invention is to contain 2- methyl -3,4,5- three
The compound that fluorobenzene is connected with difluoro-methoxy bridged bond, such compound has strong polarity and good intersolubility
Feature；Compound representated by formula II is twin nuclei, special with low rotary viscosity and excellent intersolubility
Point, is the essential component of fast-response liquid crystal display；Compound representated by general formula III is nonpolar three cyclisation
Compound, such monomer has high clearing point and big elastic constant, is conducive to improving the elasticity of liquid-crystal composition
Constant；Compound representated by formula IV and V is tetracyclic structure, and such compound has very high clearing point
With larger optical anisotropy.Acted synergistically between above each component, it can be ensured that the liquid-crystal composition tool
There are low rotary viscosity, big elastic constant, good low temperature intersolubility and fast response speed.
The preparation method of liquid-crystal composition of the present invention without specifically limited, can using conventional method by two kinds or
Multiple compounds mixing is produced, such as by mixing different component and method system soluble in one another at high temperature
It is standby, wherein, liquid-crystal composition is dissolved in the solvent for the compound and mixed, then under reduced pressure
Distill out the solvent；, such as will wherein or liquid-crystal composition of the present invention can be prepared conventionally
The less component of content is dissolved in the larger key component of content at a higher temperature, or will each affiliated group
Divide and dissolve in organic solvent, then such as acetone, chloroform or methanol will obtain after solution mixing removal solvent
Arrive.
There is liquid-crystal composition of the present invention low rotary viscosity, big elastic constant, good low temperature to dissolve each other
Property and fast response speed, available for the fast-response liquid crystal display of plurality of display modes, it is in TN, IPS
Or the use in FFS mode display can be obviously improved liquid crystal display display effect；Be particularly suitable for use in wide temperature
Liquid crystal display；It is particularly suitable for use in vehicle-mounted liquid crystal display.
Embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
Unless otherwise indicated, percentage is weight percentage in the present invention；Temperature unit for degree Celsius；△ n generations
Table optical anisotropy (25 DEG C)；ε∥And ε⊥Parallel and vertical dielectric constant (25 DEG C, 1000Hz) is represented respectively；
△ ε represent dielectric anisotropy (25 DEG C, 1000Hz)；γ 1 represents rotary viscosity (mPa.s, 25 DEG C)；Cp
Represent the clearing point (DEG C) of liquid-crystal composition；K11、K22、K33Splay, distortion and the elasticity of flexure are represented respectively
Constant (pN, 25 DEG C).
In following embodiment, unit structure is represented with code shown in table 1 in liquid-crystal compounds.
Table 1：The group structure code of liquid-crystal compounds
By taking following compound structure as an example：
It is expressed as：4CDUQKF
It is expressed as：5CCPUF
In following embodiment, the preparation of liquid-crystal composition uses heat of solution method, comprises the following steps：With
Balance weighs liquid-crystal compounds by weight percentage, wherein addition sequence is weighed without particular requirement, generally with liquid crystal
The order of melting point compound from high to low weighs mixing successively, and heating stirring causes each component to melt at 60~100 DEG C
Solution is uniform, then through filtering, revolving, finally encapsulation produces target sample.
In following embodiment, in liquid-crystal composition the weight percent of each component when liquid-crystal composition performance ginseng
Number sees below form.
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
Comparative example 1
Table 18：The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 2 collect being compared with each performance parameter value of the gained liquid-crystal composition of comparative example 1, joined
It is shown in Table 19.
Table 19：The performance parameter of liquid-crystal composition compares
| △n | △ε | Cp | γ1 | K11 | K22 | K33 | |
| Embodiment 2 | 0.100 | +7.2 | 106 | 86 | 14.7 | 7.4 | 19.4 |
| Comparative example 1 | 0.100 | +7.2 | 106 | 113 | 14.2 | 7.1 | 17.6 |
Understood through comparing：Compared with comparative example 1, the liquid-crystal composition that embodiment 2 is provided has low rotation
Viscosity and big elastic constant, i.e., with the faster response time.
As seen from the above embodiment, wide warm liquid-crystal composition provided by the present invention there is low viscosity, big bullet
Property constant, high resistivity, suitable optical anisotropy, good low temperature intersolubility and excellent light are steady
Qualitative and heat endurance, it is possible to decrease the response time of liquid crystal display, so as to solve liquid crystal display response speed
The problem of spending slow.Therefore, liquid-crystal composition provided by the present invention is applied to TN, IPS and FFS of fast-response
Type TFT liquid crystal display devices, be particularly suitable for use in wide warm liquid crystal display device, is particularly suitable for use in vehicle-mounted liquid crystal
Display.
Although above having been made in detail to the present invention with general explanation, embodiment and experiment
Most description, but on the basis of the present invention, it can be made some modifications or improvements, this is to art technology
It is obvious for personnel.Therefore, these modifications made without departing from theon the basis of the spirit of the present invention
Or improve, belong to the scope of protection of present invention.
Claims (9)
1. a kind of wide warm liquid-crystal composition, the liquid-crystal composition includes the change representated by least one formula I
Compound representated by compound, at least one formula II, the compound representated by least one general formula III and extremely
Compound representated by few a kind of formula VI or/and formula V；
The formula I is specially：
In the formula I, R1Represent C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2Can be with
Replaced by O, S or CH=CH；
Ring A is represented：
L1For H or F；N represents 0 or 1；
The formula II is specially：
In the formula II, R2、R3C is represented independently of one another1~C12Straight chained alkyl, one of them or it is many
Individual non-conterminous CH2It can be replaced by O, S or CH=CH；Ring B, ring C are represented instead independently of one another
Formula 1,4- cyclohexyl or 1,4- phenylenes；
The general formula III is specially：
In the general formula III, R4Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl, R5Represent C1~C12
Straight chained alkyl；Ring D represents trans Isosorbide-5-Nitrae-cyclohexyl or Isosorbide-5-Nitrae-phenylene；
The formula IV is specially：
In the formula IV, R6、R7C is represented independently of one another1~C12Straight chained alkyl, L2Represent H or F；
The formula V is specially：
In the formula V, R8Represent C1~C12Straight chained alkyl, X represents F or OCF3。
2. liquid-crystal composition according to claim 1, it is characterised in that the compound choosing that formula I is represented
The one or more of compound representated by self-drifting IA~formula IE：
In the formula IA~formula IE, R1C is represented independently of one another1~C7Straight chained alkyl；
Preferably, formula I represent compound be selected from IA1~IA4, IB1~IB4, IC1~IC4, ID1~ID4,
One or more in IE1~IE4：
It is highly preferred that compound representated by formula I be selected from IA1, IA2, IB2, IB3, IC1, IC2, ID1,
One or more in ID2, IE2, IE3.
3. liquid-crystal composition according to claim 1 or 2, it is characterised in that representated by the formula II
Compound be selected from formula IIA~representation compound described in IIB one or more：
In the formula IIA and formula IIB, R2C is represented independently of one another1~C7Straight chained alkyl；R3Each solely
On the spot represent C1~C7Straight chained alkyl, unbranched alkoxy or C2~C7Straight-chain alkenyl；
It is preferred that, the one kind or several of compound in IIA1~IIA30, IIB1~IIB24 representated by formula II
Kind：
It is highly preferred that the compound representated by formula II is selected from IIA1, IIA2, IIB2, IIB4, IIB15, IIB16
In one or more.
4. the liquid-crystal composition according to claims 1 to 3 any one, it is characterised in that general formula III institute's generation
The compound of table is selected from the one or more of the compound representated by general formula III A~IIIB：
In the general formula III A~IIIB, R4C is represented independently of one another2~C7Straight chained alkyl or straight-chain alkenyl；
R5C is represented independently of one another1~C7Straight chained alkyl；
Preferably, the one kind of compound representated by general formula III in IIIA1~IIIA18, IIIB1~IIIB22
Or it is a variety of：
It is highly preferred that compound representated by general formula III be selected from IIIA1, IIIA2, IIIA8, IIIA12, IIIA16,
One or more in IIIB3, IIIB12, IIIB16.
5. the liquid-crystal composition according to Claims 1 to 4 any one, it is characterised in that formula IV institute's generations
One or more of the compound of table in formula IVA~IVB：
In the formula IVA~IVB, R6、R7C is represented independently of one another1~C7Straight chained alkyl；
Preferably, one kind in IVA1~IVA10, IVB1~IVB16 of the compound representated by formula IV or
It is a variety of：
It is highly preferred that the compound of Formula IVIV is selected from one or both of IVA5 or IVB6.
6. the liquid-crystal composition according to Claims 1 to 5 any one, it is characterised in that formula V institute's generations
One or more of the compound of table in formula VA or VB：
In the formula VA~VB, R8Represent C1~C12Straight chained alkyl；
Preferably, one or more of the compound representated by formula V in VA1~VA4, VB1~VB4：
It is highly preferred that one or more of the compound representated by formula V in VA1, VA2, VA3.
7. the liquid-crystal composition according to claim 1~6 any one, it is characterised in that the liquid crystal
Composition includes the component of following mass percent：
Compound representated by (1) 5~50% formula I；
Compound representated by (2) 20~60% formula II；
Compound representated by (3) 1~40% general formula III；
Compound representated by (4) 1~30% formula IV and/or formula V；
Preferably comprise the component of following mass percent：
Compound representated by (1) 10~35% formula I；
Compound representated by (2) 35~55% formula II；
Compound representated by (3) 5~35% general formula III；
Compound representated by (4) 2~20% formula IV and/or formula V；
More preferably include the component of following mass percent：
Compound representated by (1) 16~30% formula I；
Compound representated by (2) 43~53% formula II；
Compound representated by (3) 7~29% general formula III；
Compound representated by (4) 4~18% formula IV and/or formula V；
Preferably comprise the component of following mass percent：
Compound representated by (1) 10~35% formula I；
Compound representated by (2) 35~55% formula II；
Compound representated by (3) 5~35% general formula III；
Compound representated by (4) 2~8% formula IV；
Compound representated by (5) 0~15% formula V；
More preferably include the component of following mass percent：
Compound representated by (1) 16~30% formula I；
Compound representated by (2) 43~53% formula II；
Compound representated by (3) 7~29% general formula III；
Compound representated by (4) 4~5% formula IV；
Compound representated by (5) 0~13% formula V；
Preferably comprise the component of following mass percent：
Compound representated by (1) 10~35% formula I；
Compound representated by (2) 40~55% formula II；
Compound representated by (3) 5~30% general formula III；
Compound representated by (4) 2~8% formula IV；
Compound representated by (5) 1~15% formula V；
More preferably include the component of following mass percent：
Compound representated by (1) 16~30% formula I；
Compound representated by (2) 45~53% formula II；
Compound representated by (3) 7~22% general formula III；
Compound representated by (4) 4~5% formula IV；
Compound representated by (5) 4~13% formula V；
Or include the component of following mass percent：
Compound representated by (1) 24% formula I；
Compound representated by (2) 43% formula II；
Compound representated by (3) 29% general formula III；
Compound representated by (4) 4% formula IV.
8. liquid-crystal composition according to claim 7, it is characterised in that each in the liquid-crystal composition
The mass percent sum of component is 100%.
9. application of the liquid-crystal composition described in claim 1~8 any one in field of liquid crystal display；It is excellent
Elect the application in fast-response liquid crystal display device as；More preferably in TN, IPS or FFS mode liquid crystal
Application in showing device；Application more preferably in wide warm liquid crystal display device；More preferably exist
Application in vehicle-mounted liquid crystal display device.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6555450B1 (en) * | 2017-12-11 | 2019-08-07 | Dic株式会社 | Liquid crystal display element |
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