CN109575946A - A kind of liquid-crystal composition and its liquid crystal display device - Google Patents
A kind of liquid-crystal composition and its liquid crystal display device Download PDFInfo
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- CN109575946A CN109575946A CN201710894487.6A CN201710894487A CN109575946A CN 109575946 A CN109575946 A CN 109575946A CN 201710894487 A CN201710894487 A CN 201710894487A CN 109575946 A CN109575946 A CN 109575946A
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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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- 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
- C09K19/46—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing esters
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Abstract
The invention discloses a kind of liquid-crystal composition and its liquid crystal display devices.The liquid-crystal composition includes: the compound of at least one general formula I and the compound of at least one general formula II.Liquid-crystal composition provided by the invention also has good low temperature intersolubility while maintaining suitable optical anisotropy, high clearing point, big dielectric anisotropy absolute value.When the liquid-crystal composition is applied in liquid crystal display, the advantages that liquid crystal display device shows good weatherability, contrast is high can be made.
Description
Technical field
The present invention relates to liquid crystal material fields, and in particular to a kind of liquid-crystal composition and its liquid crystal display device.
Background technique
Liquid crystal display element can be using clock and watch, electronic calculator as various household electrical appliance, mensuration machine, the automobile of representative
It is used in panel, word processor, computer, printer, TV etc..It is divided into PC (phase according to the type of display pattern
Change, phase transformation), TN (twist nematic, twisted-nematic), STN (super twisted nematic, supertwist to
Column), ECB (electrically controlled birefringence, electrically conerolled birefringence), OCB (optically
It is compensated bend, optical compensation curved), IPS (in-plane switching, coplanar transformation), VA (vertical
Alignment, vertical orientation) etc. types.It is divided into PM (passive matrix, passive-matrix) type according to the driving method of element
With AM (active matrix, active-matrix) type.PM points are the static state types such as (static) and multichannel (multiplex).AM points
For TFT (thin film transistor, thin film transistor (TFT)), MIM (metal insulator metal, metal-insulator-
Metal) etc. types.The type of TFT has amorphous silicon (amorphous silicon) and polysilicon (polycrystal
silicon).The latter is divided into high temperature modification and low form according to manufacturing process.Liquid crystal display element is divided into benefit according to the type of light source
With the reflection-type of natural light, the infiltration type using backlight and the semi-transmission type using two kinds of light sources of natural light and backlight.
In Poor information, generally driven using passive mode, but with the increasing of information content, display size and display
Number increases, and crosstalk and contrast reduce phenomenon and become seriously, therefore are generally driven using active matrix (AM) mode, at present
More is driven using thin film transistor (TFT) (TFT).In AM-TFT element, TFT switch device is sought in two-dimensional grid
Location supplements pixel electrode with money in the finite time being on, and becomes off state again later, until in next period
It is addressed again.Therefore, between two addressing periods, it is undesirable to which the voltage on pixel changes, and otherwise pixel is saturating
Light rate can change, and lead to the unstable of display.The velocity of discharge of pixel depends on electrode capacity and inter-electrode dielectric material
The resistivity of material.Therefore it is required that liquid crystal material has higher resistivity, while material being required to have suitable optical anisotropy Δ n
(Δ n value is generally in 0.08-0.10 or so) and lower threshold voltage reduce power consumption to reach the driving voltage of reduction
Purpose；It it is also desirable to have lower viscosity, to meet the needs of quick response.This kind of liquid-crystal composition has had many document reports
Road, such as WO9202597, WO9116398, WO9302153, WO9116399, CN1157005A etc..
Studies have shown that the main factor for influencing the contrast of liquid crystal display element is the light leakage (LC of liquid crystal material
Scattering), LC Scattering and elastic constant average value (Kave) relational expression it is as follows:
LC Scattering and KaveIt is inversely proportional, promoting KaveIn the case where, the light leakage of liquid crystal material can be reduced.
In addition, contrast (CR) and the relational expression of brightness (L) are as follows:
CR=L255/L0× 100%,
Wherein, L255For ON state brightness, L0For OFF state brightness.As can be seen that influencing CR significantly should be L0Variation.It closes
Under state, L0It is unrelated with the dielectric of liquid crystal molecule, LC Scattering related to the LC Scattering of liquid crystal material itself
It is small, L0Also smaller, such CR will be significantly improved.
The liquid crystal display element of the big liquid-crystal composition of absolute value containing dielectric anisotropy can reduce basic voltage
Value reduces driving voltage, and can further decrease consumption of electric power.
The liquid crystal display element of liquid-crystal composition containing lower threshold voltage can be effectively reduced the power consumption of display, special
It is not in consumables, the portable electronic products such as similar mobile phone, tablet computer have longer cruise duration.However have lower
The degree of order of its molecule of the liquid-crystal composition of threshold voltage (typically containing big dielectric polar group) is low, and reactive mesogen molecule has
The K of sequence degreeaveValue can also reduce, to influence the light leakage and contrast of liquid crystal material, the two is generally difficult to take into account.
The small liquid-crystal composition of viscosity, can be improved liquid crystal display element response speed.When the response speed of liquid crystal display element
When spending fast, it is applicable to animation and shows.In addition, can shorten when injecting liquid-crystal composition into the liquid crystal cell of liquid crystal display element
Injection length can be improved workability.
Prior art discloses lower power consumption, compared with the liquid-crystal composition of fast-response, such as patent document CN102858918A, but
There are environmental issues (use of such as chlorine-containing compound), service life short (such as UV or thermostabilization for the liquid-crystal composition of the prior art
Property it is poor), contrast it is low (shown under such as daylight that screen whiten), and to cannot be considered in terms of the requirements such as LCD TV, tablet computer appropriate
Optical anisotropy, dielectric anisotropic appropriate, high voltage holding ratio, anti-UV be stable and the balancing performance of high-temperature stable is asked
Topic, cannot meet various aspects index simultaneously.
From the preparation angle of liquid crystal material, the properties of liquid crystal material are influenced because checking and balance, a certain performance
The promotion of index may make other performances change.Therefore, the preparation all suitable liquid crystal material of various aspects of performance often needs
Want creative work.
Liquid crystal material is the important component of liquid crystal display, and global liquid crystal display has very big market at present
Demand is chiefly used in electric equipment products, but its life cycle is shorter.Shorter life cycle naturally occurring waste pollution etc. is asked
Topic, in the case where nowadays environmentally protective problem is increasingly subject to the attention of various circles of society, if can be controlled from source, i.e., in liquid crystal
The material that environment-friendly and green is selected in the modulated process of material, the ring paid when can greatly reduce processing waste liquid crystal display
Border cost.Therefore, preparation various aspects of performance is all suitable, and economic, environmentally protective liquid crystal material is often with greater need for creative labor
It is dynamic.
Summary of the invention
Goal of the invention: in view of the drawbacks of the prior art, the purpose of the present invention is to provide a kind of optical anisotropies greatly, is situated between
The absolute value of electrical anisotropy is big, with wide nematic phase, the liquid-crystal composition that low temperature storage stability is high and contrast is high,
And the liquid crystal display element comprising the liquid-crystal composition.
Technical solution of the present invention:
One aspect of the present invention provides a kind of liquid-crystal composition, and the liquid-crystal composition includes:
The compound of at least one general formula I
And
The compound of at least one general formula II
Wherein,
R1And R2It each independently represents-H, the alkyl containing 1-12 carbon atom or alkoxy, contain 2-12 carbon atom
Alkenyl or alkenyloxy group,And R1And R2In at least one be the alkene containing 2-12 carbon atom
Base or alkenyloxy group；
R3And R4It each independently represents-H, the alkyl containing 1-12 carbon atom or alkoxy, contain 2-12 carbon atom
Alkenyl or alkenyloxy group ,-OR5OR6、R3And R4In at least one be-OR5OR6；
R5Indicate the alkylidene containing 1-12 carbon atom or the alkenylene containing 2-12 carbon atom；
R6Indicate the alkyl containing 1-12 carbon atom or the alkenyl containing 2-12 carbon atom；
Z1Indicate singly-bound ,-COO- ,-OCO- ,-CH2O-、-OCH2Or-CH2CH2-；
RingRingRingRingRingAnd ringIt each independently represents
R indicates 0 or 1；
M indicates 0,1 or 2, and when m is 2, ringCan be identical or different, Z1It can be identical or different.
Preferably preferably, the compound of the general formula I is selected from the group of following compound composition:
Wherein,
R11And R21It each independently represents H, the alkyl containing 1-7 carbon atom or alkoxy, contain 2-7 carbon atom
Alkenyl or alkenyloxy group, and R11And R21In at least one be alkenyl or alkenyloxy group containing 2-7 carbon atom.
It is further preferred that the compound of the general formula I -1 is selected from the group of following compound composition:
The compound of the general formula I -2 is selected from the group of following compound composition:
The compound of the general formula I -3 is selected from the group of following compound composition:
The compound of the general formula I -4 is selected from the group of following compound composition:
The compound of the general formula I -5 is selected from the group of following compound composition:
Still further preferably, the compound of the I -1-1 of general formula is selected from the group of following compound composition:
The compound of the I -1-2 of general formula is selected from the group of following compound composition:
The compound of the I -2-1 of general formula is selected from the group of following compound composition:
The compound of the I -2-2 of general formula is selected from the group of following compound composition:
The compound of the I -2-3 of general formula is selected from the group of following compound composition:
The compound of the I -2-4 of general formula is selected from the group of following compound composition:
The compound of the I -2-5 of general formula is selected from the group of following compound composition:
The compound of the I -2-6 of general formula is selected from the group of following compound composition:
The compound of the I -3-1 of general formula is selected from the group of following compound composition:
The compound of the I -3-2 of general formula is selected from the group of following compound composition:
The compound of the I -3-3 of general formula is selected from the group of following compound composition:
The compound of the I -4-1 of general formula is selected from the group of following compound composition:
The compound of the I -4-2 of general formula is selected from the group of following compound composition:
The compound of the I -5-1 of general formula is selected from the group of following compound composition:
The compound of the I -5-2 of general formula is selected from the group of following compound composition:
Preferably, the compound of the general formula II is selected from the group of following compound composition:
Wherein,
R31And R41It each independently represents H, the alkyl containing 1-7 carbon atom or alkoxy, contain 2-7 carbon atom
Alkenyl or alkenyloxy group ,-OR51OR61、And R31And R41In at least one be-OR51OR61；
R51Indicate the alkylidene containing 1-10 carbon atom or the alkenylene containing 2-10 carbon atom；
R61Indicate the alkyl containing 1-10 carbon atom or the alkenyl containing 2-10 carbon atom.
In some embodiments of the present invention, it is preferable that the compound of the general formula II -1 is selected from by following compound
The group of composition:
Wherein, if R31Expression-OR51OR61, then R51Be not-
(CH2)2-；
Wherein, if R31Expression-OR51OR61, then R51Be not-
(CH2)2Or-(CH2)3-；
Wherein, if R31Expression-OR51OR61, then R51Be not-
(CH2)2-、-(CH2)3Or-(CH2)4-；
Wherein, if R31Expression-OR51OR61, then R51Be not-
(CH2)2-、-(CH2)3-、-(CH2)4Or-(CH2)5-；
Wherein, if R31Expression-OR51OR61, then R51Be not-
(CH2)2-、-(CH2)3-、-(CH2)4-、-(CH2)5Or-(CH2)6-；
AndWherein, if R31Expression-OR51OR61, then R51No
For-(CH2)2-、-(CH2)3-、-(CH2)4-、-(CH2)5-、-(CH2)6Or-(CH2)8,
The compound of the general formula II -2 is selected from the group being made of following compound:
The compound of the general formula II -3 is selected from the group being made of following compound:
Wherein, if R31Expression-OR51OR61, then R51Be not-
(CH2)2-；
Wherein, if R31Expression-OR51OR61, then R51Be not-
(CH2)2Or-(CH2)3-；
Wherein, if R31Expression-OR51OR61, then R51Be not-
(CH2)2-、-(CH2)3Or-(CH2)4-；
Wherein, if R31Expression-OR51OR61, then R51Be not-
(CH2)2-、-(CH2)3-、-(CH2)4Or-(CH2)5-；
Wherein, if R31Expression-OR51OR61, then R51Be not-
(CH2)2-、-(CH2)3-、-(CH2)4-、-(CH2)5Or-(CH2)6-；
AndWherein, if R31Expression-OR51OR61, then R51No
For-(CH2)2-、-(CH2)3-、-(CH2)4-、-(CH2)5-、-(CH2)6Or-(CH2)8,
The compound of the general formula II -4 is selected from the group being made of following compound:
The compound of the general formula II -5 is selected from the group being made of following compound:
The compound of the general formula II -6 is selected from the group being made of following compound:
The compound of the general formula II -7 is selected from the group being made of following compound:
The compound of the general formula II -8 is selected from the group being made of following compound:
Wherein, if R31Expression-OR51OR61, then R51Be not-
(CH2)2-；
Wherein, if R31Expression-OR51OR61, then R51Be not-
(CH2)2Or-(CH2)3-；
Wherein, if R31Expression-OR51OR61, then R51Be not-
(CH2)2-、-(CH2)3Or-(CH2)4-；
Wherein, if R31Expression-OR51OR61, then R51Be not-
(CH2)2-、-(CH2)3-、-(CH2)4Or-(CH2)5-；
Wherein, if R31Expression-OR51OR61, then R51Be not-
(CH2)2-、-(CH2)3-、-(CH2)4-、-(CH2)5Or-(CH2)6-；
AndWherein, if R31Expression-OR51OR61, then R51No
For-(CH2)2-、-(CH2)3-、-(CH2)4-、-(CH2)5-、-(CH2)6Or-(CH2)8,
The compound of the general formula II -9 is selected from the group being made of following compound:
The compound of the general formula II -10 is selected from the group being made of following compound:
Wherein, if R31Expression-OR51OR61,
Then R51It is not-(CH2)2-；
Wherein, if R31Expression-OR51OR61,
Then R51It is not-(CH2)2Or-(CH2)3-；
Wherein, if R31Expression-OR51OR61,
Then R51It is not-(CH2)2-、-(CH2)3Or-(CH2)4-；
Wherein, if R31Expression-OR51OR61,
Then R51It is not-(CH2)2-、-(CH2)3-、-(CH2)4Or-(CH2)5-；
Wherein, if R31Expression-OR51OR61,
Then R51It is not-(CH2)2-、-(CH2)3-、-(CH2)4-、-(CH2)5Or-(CH2)6-；
AndWherein, if R31Indicate-
OR51OR61, then R51It is not-(CH2)2-、-(CH2)3-、-(CH2)4-、-(CH2)5-、-(CH2)6Or-(CH2)8,
The compound of the general formula II -11 is selected from the group being made of following compound:
The compound of the general formula II -12 is selected from the group being made of following compound:
The compound of the general formula II -13 is selected from the group being made of following compound:
The compound of the general formula II -14 is selected from the group being made of following compound:
The compound of the general formula II -15 is selected from the group being made of following compound:
The compound of the general formula II -16 is selected from the group being made of following compound:
Further, the liquid-crystal composition further include at least one general formula III compound or at least one general formulae IV
Compound:
Wherein,
R7、R8And R9Each independently represent-H ,-F, the alkyl containing 1-12 carbon atom or alkoxy, containing 2-12
The alkenyl or alkenyloxy group ,-OR of carbon atom5OR6、The wherein alkyl or alkoxy and described
One or more H in alkenyl or alkenyloxy group can be replaced by F；
R5Indicate the alkylidene containing 1-12 carbon atom or the alkenylene containing 2-12 carbon atom；
R6Indicate the alkyl containing 1-12 carbon atom or the alkenyl containing 2-12 carbon atom；
X expression-F, fluoro-alkyl or fluoroalkyl, the fluoro containing 2-12 carbon atom containing 1-12 carbon atom
Alkenyl or fluoro alkenyloxy group；
Z2And Z3Each independently represent singly-bound ,-COO- ,-OCO- ,-CH2O-、-OCH2Or-CH2CH2-；
Z4Indicate singly-bound ,-COO- ,-OCO- ,-CH2O-、-OCH2-、-CF2O-、-OCF2Or-CH2CH2-；
L1And L2Each independently represent-F ,-Cl ,-CN or-NCS；
L3Expression-H or-CH3；
L4And L5Each independently represent-H or-F；
RingAnd ringIt each independently representsWherein,Middle one or more-CH2It can be substituted by-O-,Middle one or more H can be optionally substituted by halogen；
RingIt indicatesIts
InMiddle one or more-CH2It can be substituted by-O-, singly-bound can be by double bond in one or more rings
Substitution,Middle one or more H can be optionally substituted by halogen, and-CH=can be substituted by-N=in one or more rings；
N1 and n2 each independently represents 0,1,2 or 3, and 0≤n1+n2≤3, when n1 is 2 or 3, ring
Can be identical or different, Z2It can be identical or different；When n2 is 2 or 3, ringCan be identical or different, Z3It can be with
It is identical or different；
Q indicates 1,2,3 or 4, and when q is 2,3,4, ringCan be identical or different, Z4It can be identical or not
Together.
Preferably, the general formula III is selected from the group being made of following compound:
Wherein,
R71And R81It each independently represents-H ,-F, the alkyl containing 1-7 carbon atom or alkoxy, contain 2-7 carbon
The alkenyl or alkenyloxy group ,-OR of atom51OR61、The wherein alkyl or alkoxy and described
One or more H in alkenyl or alkenyloxy group can be replaced by F；
R51Indicate the alkylidene containing 1-10 carbon atom or the alkenylene containing 2-10 carbon atom；
R61Indicate the alkyl containing 1-10 carbon atom or the alkenyl containing 2-10 carbon atom.
Preferably, the compound of the general formulae IV is selected from the group of following compound composition:
Wherein,
R91Expression-H ,-F, alkyl or alkoxy, alkenyl or alkene oxygen containing 2-7 carbon atom containing 1-7 carbon atom
Base ,-OR51OR61, wherein one or more H in the alkyl or alkoxy and the alkenyl or alkenyloxy group can be replaced by F；
R51Indicate the alkylidene containing 1-10 carbon atom or the alkenylene containing 2-10 carbon atom；
R61Indicate the alkyl containing 1-10 carbon atom or the alkenyl containing 2-10 carbon atom.
In some embodiments of the present invention, the compound of the general formula I account for the liquid-crystal composition total weight 5~
95%, the general formula II accounts for the 5~95% of the liquid-crystal composition total weight.
In some embodiments of the present invention, the compound of the general formula I account for the liquid-crystal composition total weight 5~
90%, the compound of the general formula II accounts for the 5~90% of the liquid-crystal composition total weight, and the general formula III accounts for the liquid crystal group
Close the 5~90% of object total weight.
In some embodiments of the present invention, the compound of the general formula I account for the liquid-crystal composition total weight 5~
90%, the compound of the general formula II accounts for the 5~90% of the liquid-crystal composition total weight, and the general formulae IV accounts for the liquid crystal group
Close the 5~90% of object total weight.
In some embodiments of the present invention, the compound of the general formula I preferably is selected from following compound: I-1-1-2, I-
3-1-1, I-5-1-1, I-1-2-2, I-2-5-1, I-3-3-1, I-4-1-3, I-2-6-1, I-5-1-3, I-4-2-1 and I-5-2-
The group of 1 composition.
In some embodiments of the present invention, the compound of the general formula II preferably is selected from following compound: II-1-1,
II-1-2、II-1-3、II-2-2、II-5-3、II-3-1、II-3-2、II-6-2、II-6-3、II-7-1、II-9-2、II-9-3
With the group of II-15-1 composition.
In some embodiments of the present invention, the compound of the general formula III preferably is selected from following compound: III -2, III -
5, the group of III -6, III -8, III -10, III -11, III -13 and III -17 composition.
In some embodiments of the present invention, the compounds of formula IV preferably is selected from following compound: IV-3, IV-
7、IV-16、IV-17、IV-19、IV-25、IV-26、IV-31、IV-32、IV-37、IV-38、IV-45、IV-46、IV-47、IV-
The group of 49 and IV-50 composition.
Another aspect of the present invention provides a kind of liquid-crystal composition, also comprising describing in known to those skilled in the art and document
One or more additives.For example, can be added the pleochroic dye for accounting for the 0-15% of the liquid-crystal composition total weight and/or
Chiral dopant.
The possibility dopant being added preferably in mixture according to the present invention is shown as follows.
In embodiments of the invention, the preferably described dopant accounts for the 0-5% of the liquid-crystal composition total weight；It is more excellent
Ground, the dopant account for the 0-1% of the liquid-crystal composition total weight.
The stabilizer that can be for example added in mixture according to the present invention is referred to as follows.
Preferably, the stabilizer is selected from stabilizer as follows.
In embodiments of the invention, the preferably described stabilizer accounts for the 0-5wt% of the liquid-crystal composition total weight；More
Excellently, the stabilizer accounts for the 0-1wt% of the liquid-crystal composition total weight；As particularly preferred scheme, the stabilizer is accounted for
The 0-0.1wt% of the liquid-crystal composition total weight.
Another aspect of the present invention also provides a kind of liquid crystal display device comprising above-mentioned liquid-crystal composition.
The utility model has the advantages that
Liquid-crystal composition dielectric anisotropy absolute value provided by the invention is big, has preferable low temperature intersolubility, has
Biggish KaveValue, the light leakage of liquid crystal material is small, and contrast is high, and the response time is short, when being applied in display element, has comparison
The advantages that degree is high, good weatherability, in the liquid crystal display element especially suitable for active-matrix thin film transistor (TFT) (AM-TFT) driving.
Specific embodiment
Illustrate the present invention below with reference to specific embodiment.It should be noted that the following examples are the present invention
Example, be only used to illustrate the present invention, and be not limited to the present invention.Without departing from the spirit or scope of the invention,
It can carry out other combinations and the various improvement in present inventive concept.
For convenient for expressing, in following embodiment, unit structure code listed by table 1 of liquid-crystal composition is indicated:
The group structure code of 1 liquid-crystal compounds of table
By taking the compound of following structural formula as an example:
The structural formula such as indicates by code listed in Table 1, then can be expressed as: nCCGF, and the n in code indicates the C of left end alkyl
Atomicity, such as n are " 3 ", that is, indicate that the alkyl is-C3H7；C in code represents cyclohexyl, and G represents the fluoro- Isosorbide-5-Nitrae of 2--Asia benzene
Base, F representative-F.
In following embodiment test item to write a Chinese character in simplified form code name as follows:
Cp (DEG C) clearing point (nematic-isotropic phase transition temperature)
Δ n optical anisotropy (589nm, 25 DEG C)
Δ ε dielectric anisotropy (1KHz, 25 DEG C)
T-40 DEG C of low-temperature storage time (at -40 DEG C)
K11Splay elastic constant
K22Distort elastic constant
K33Bend elastic constant
KaveElastic constant average value
Wherein,
Optical anisotropy uses abbe's refractometer under sodium lamp (589nm) light source, 25 DEG C of tests obtain；
Δ ε=ε‖-ε⊥, wherein ε‖For the dielectric constant for being parallel to molecular axis, ε⊥For the dielectric constant perpendicular to molecular axis,
Test condition: 25 DEG C, 1KHz, testing cassete be TN90 type, box is 7 μm thick.
Each ingredient used by below in an example, the synthesis can be carried out by known methods, or passes through
Commercial sources obtain.These synthetic technologys be it is conventional, acquired each liquid-crystal compounds meets electrical type compound mark after tested
It is quasi-.
The proportion of each liquid-crystal composition as defined according to the following examples, prepares liquid-crystal composition.The liquid-crystal composition
Preparation carry out according to conventional methods in the art, such as take heating, ultrasonic wave, suspension mode mixed according to regulation ratio
It closes and is made.
Prepare and research the liquid-crystal composition provided in the following example.Be shown below each liquid-crystal composition composition and
Its performance parameter test result.
Comparative example 1
The liquid-crystal composition of comparative example 1 is configured to by each compound and weight percent listed in table 2, be filled in
It is tested for the property between liquid crystal display two substrates, test data is as shown in the table:
2 liquid crystal combination composition formula of table and its test performance
Embodiment 1
The liquid-crystal composition of embodiment 1 is configured to by each compound and weight percent listed in table 3, be filled in
It is tested for the property between liquid crystal display two substrates, test data is as shown in the table:
3 liquid crystal combination composition formula of table and its test performance
Embodiment 2
It is configured to the liquid-crystal composition of embodiment 2 by each compound and weight percent listed in table 4, is filled in liquid
It is tested for the property between crystal display two substrates, test data is as shown in the table:
4 liquid crystal combination composition formula of table and its test performance
Embodiment 3
It is configured to the liquid-crystal composition of embodiment 3 by each compound and weight percent listed in table 5, is filled in liquid
It is tested for the property between crystal display two substrates, test data is as shown in the table:
5 liquid crystal combination composition formula of table and its test performance
Embodiment 4
It is configured to the liquid-crystal composition of embodiment 4 by each compound and weight percent listed in table 6, is filled in liquid
It is tested for the property between crystal display two substrates, test data is as shown in the table:
6 liquid crystal combination composition formula of table and its test performance
Comparative example 2
It is configured to the liquid-crystal composition of comparative example 2 by each compound and weight percent listed in table 7, is filled in liquid
It is tested for the property between crystal display two substrates, test data is as shown in the table:
7 liquid crystal combination composition formula of table and its test performance
Embodiment 5
It is configured to the liquid-crystal composition of embodiment 5 by each compound and weight percent listed in table 8, is filled in liquid
It is tested for the property between crystal display two substrates, test data is as shown in the table:
8 liquid crystal combination composition formula of table and its test performance
Embodiment 6
It is configured to the liquid-crystal composition of embodiment 6 by each compound and weight percent listed in table 9, is filled in liquid
It is tested for the property between crystal display two substrates, test data is as shown in the table:
9 liquid crystal combination composition formula of table and its test performance
In order to protrude the beneficial effect of liquid-crystal composition of the invention, inventor chooses close with system of the embodiment of the present invention
Comparative example.It can be seen that liquid-crystal composition dielectric provided by the invention by the above comparative example 1, comparative example 2, embodiment 1-6
Anisotropy absolute value is big, has preferable low temperature intersolubility, has biggish KaveValue, the light leakage of liquid crystal material is small, contrast
Height, the response time is short, when being applied in display element, has many advantages, such as contrast height, good weatherability, especially suitable for active square
In the liquid crystal display element that battle array thin film transistor (TFT) (AM-TFT) drives.
The technical concepts and features of embodiment of above only to illustrate the invention, its object is to allow be familiar with technique
People understands the content of present invention and is implemented, and it is not intended to limit the scope of the present invention, and all spirit according to the present invention is real
The equivalent change or modification that matter is done, should be covered by the scope of protection of the present invention.
Claims (10)
1. a kind of liquid-crystal composition, which is characterized in that the liquid-crystal composition includes:
The compound of at least one general formula I
And
The compound of at least one general formula II
Wherein,
R1And R2Each independently represent-H, alkyl or alkoxy, the alkene containing 2-12 carbon atom containing 1-12 carbon atom
Base or alkenyloxy group,And R1And R2In at least one be the alkenyl containing 2-12 carbon atom or
Alkenyloxy group；
R3And R4Each independently represent-H, alkyl or alkoxy, the alkene containing 2-12 carbon atom containing 1-12 carbon atom
Base or alkenyloxy group ,-OR5OR6、R3And R4In at least one be-OR5OR6；
R5Independently indicate the alkylidene containing 1-12 carbon atom or the alkenylene containing 2-12 carbon atom；
R6Indicate the alkyl containing 1-12 carbon atom or the alkenyl containing 2-12 carbon atom；
Z1Indicate singly-bound ,-COO- ,-OCO- ,-CH2O-、-OCH2Or-CH2CH2-；
RingRingRingRingRingAnd ringIt each independently represents
R indicates 0 or 1；
M indicates 0,1 or 2, and when m is 2, ringCan be identical or different, Z1It can be identical or different.
2. liquid-crystal composition according to claim 1, which is characterized in that the compound of the general formula I is selected from following chemical combination
The group of object composition:
Wherein,
R11And R21Each independently represent H, alkyl or alkoxy, the alkenyl containing 2-7 carbon atom containing 1-7 carbon atom
Or alkenyloxy group, and R11And R21In at least one be alkenyl or alkenyloxy group containing 2-7 carbon atom.
3. liquid-crystal composition according to claim 1, which is characterized in that the compound of the general formula II is selected from following chemical combination
The group of object composition:
Wherein,
R31And R41Each independently represent H, alkyl or alkoxy, the alkenyl containing 2-7 carbon atom containing 1-7 carbon atom
Or alkenyloxy group ,-OR51OR61、And R31And R41In at least one be-OR51OR61；
R51Indicate the alkylidene containing 1-10 carbon atom or the alkenylene containing 2-10 carbon atom；
R61Indicate the alkyl containing 1-10 carbon atom or the alkenyl containing 2-10 carbon atom.
4. liquid-crystal composition according to claim 1, which is characterized in that the liquid-crystal composition further includes at least one logical
The compound of the compound of formula III or at least one general formulae IV:
Wherein,
R7、R8And R9Each independently represent-H ,-F, the alkyl containing 1-12 carbon atom or alkoxy, containing 2-12 carbon original
The alkenyl or alkenyloxy group ,-OR of son5OR6、The wherein alkyl or alkoxy and the alkenyl
Or one or more H in alkenyloxy group can be replaced by F；
R5Indicate the alkylidene containing 1-10 carbon atom or the alkenylene containing 2-10 carbon atom；
R6Indicate the alkyl containing 1-10 carbon atom or the alkenyl containing 2-10 carbon atom；
X expression-F, fluoro-alkyl or fluoroalkyl, the fluoro alkenyl containing 2-12 carbon atom containing 1-12 carbon atom
Or fluoro alkenyloxy group；
Z2And Z3Each independently represent singly-bound ,-COO- ,-OCO- ,-CH2O-、-OCH2Or-CH2CH2-；
Z4Indicate singly-bound ,-COO- ,-OCO- ,-CH2O-、-OCH2-、-CF2O-、-OCF2Or-CH2CH2-；
L1And L2Each independently represent-F ,-Cl ,-CN or-NCS；
L3Expression-H or-CH3；
L4And L5Each independently represent-H or-F；
RingAnd ringIt each independently representsWherein,Middle one or more-CH2It can be substituted by-O-,Middle one or more H can be optionally substituted by halogen；
RingIt indicatesWhereinMiddle one or more-CH2It can be substituted by-O-, singly-bound can be replaced by double bond in one or more rings
Generation,Middle one or more H can be optionally substituted by halogen, and-CH=can be substituted by-N=in one or more rings；
N1 and n2 each independently represents 0,1,2 or 3, and 0≤n1+n2≤3, when n1 is 2 or 3, ringIt can phase
It is same or different, Z2It can be identical or different；When n2 is 2 or 3, ringCan be identical or different, Z3Can it is identical or
It is different；
Q indicates 1,2,3 or 4, and when q is 2,3,4, ringCan be identical or different, Z4It can be identical or different.
5. liquid-crystal composition according to claim 4, which is characterized in that the compound of the general formula III is selected from following chemical combination
The group of object composition:
Wherein,
R71And R81Each independently represent-H ,-F, the alkyl containing 1-7 carbon atom or alkoxy, containing 2-7 carbon atom
Alkenyl or alkenyloxy group ,-OR51OR61、Wherein the alkyl or alkoxy and the alkenyl or
One or more H in alkenyloxy group can be replaced by F；
R51Indicate the alkylidene containing 1-10 carbon atom or the alkenylene containing 2-10 carbon atom；
R61Indicate the alkyl containing 1-10 carbon atom or the alkenyl containing 2-10 carbon atom.
6. liquid-crystal composition according to claim 4, which is characterized in that the compound of the general formulae IV is selected from following chemical combination
The group of object composition:
Wherein,
R91Expression-H ,-F, the alkyl containing 1-7 carbon atom or alkoxy, the alkenyl containing 2-7 carbon atom or alkenyloxy group ,-
OR51OR61, wherein one or more H in the alkyl or alkoxy and the alkenyl or alkenyloxy group can be replaced by F；
R51Indicate the alkylidene containing 1-10 carbon atom or the alkenylene containing 2-10 carbon atom；
R61Indicate the alkyl containing 1-10 carbon atom or the alkenyl containing 2-10 carbon atom.
7. liquid-crystal composition according to claim 1, which is characterized in that the compound of the general formula I accounts for the liquid crystal group
The 5~95% of object total weight are closed, the general formula II accounts for the 5~95% of the liquid-crystal composition total weight.
8. liquid-crystal composition according to claim 4, which is characterized in that the compound of the general formula I accounts for the liquid crystal group
The 5~90% of object total weight are closed, the compound of the general formula II accounts for the 5~90% of the liquid-crystal composition total weight, described logical
Formula III accounts for the 5~90% of the liquid-crystal composition total weight.
9. liquid-crystal composition according to claim 4, which is characterized in that the compound of the general formula I accounts for the liquid crystal group
The 5~90% of object total weight are closed, the compound of the general formula II accounts for the 5~90% of the liquid-crystal composition total weight, described logical
Formula IV accounts for the 5~90% of the liquid-crystal composition total weight.
10. a kind of liquid crystal display device comprising any one of claim 1~9 liquid-crystal composition.
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| CN113088295A (en) * | 2021-04-07 | 2021-07-09 | 浙江汽车仪表有限公司 | Display material for automobile full-liquid crystal instrument panel |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03265683A (en) * | 1990-03-15 | 1991-11-26 | Dainippon Ink & Chem Inc | Nematic liquid crystal composition |
| JPH03265684A (en) * | 1990-03-15 | 1991-11-26 | Dainippon Ink & Chem Inc | Nematic liquid crystal composition |
| JPH04117487A (en) * | 1990-09-07 | 1992-04-17 | Dainippon Ink & Chem Inc | Nematic liquid crystal composition |
| JPH04338360A (en) * | 1991-05-13 | 1992-11-25 | Kanto Chem Co Inc | New cyclobutanecarboxylic acid derivative and liquid crystal composition containing the same |
| DE4218614A1 (en) * | 1992-06-05 | 1993-12-09 | Merck Patent Gmbh | Liq. crystal indicator elements and electro-optic indicator element dielectrics - contain liq. crystal media having low viscosity, relatively high dielectric anisotropy and high nematogenity |
| JPH07199233A (en) * | 1993-12-28 | 1995-08-04 | Dainippon Ink & Chem Inc | Liquid crystal element and display using the element |
| US20040149957A1 (en) * | 2001-07-12 | 2004-08-05 | Kelly Stephen M | Liquid crystal compounds |
| JP2005239639A (en) * | 2004-02-26 | 2005-09-08 | Nitto Denko Corp | Ion conductor |
| EP1780193A1 (en) * | 2004-07-27 | 2007-05-02 | Japan Science and Technology Agency | Liquid crystal material, method for producing liquid crystal material and liquid crystal device |
-
2017
- 2017-09-28 CN CN201710894487.6A patent/CN109575946B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03265683A (en) * | 1990-03-15 | 1991-11-26 | Dainippon Ink & Chem Inc | Nematic liquid crystal composition |
| JPH03265684A (en) * | 1990-03-15 | 1991-11-26 | Dainippon Ink & Chem Inc | Nematic liquid crystal composition |
| JPH04117487A (en) * | 1990-09-07 | 1992-04-17 | Dainippon Ink & Chem Inc | Nematic liquid crystal composition |
| JPH04338360A (en) * | 1991-05-13 | 1992-11-25 | Kanto Chem Co Inc | New cyclobutanecarboxylic acid derivative and liquid crystal composition containing the same |
| DE4218614A1 (en) * | 1992-06-05 | 1993-12-09 | Merck Patent Gmbh | Liq. crystal indicator elements and electro-optic indicator element dielectrics - contain liq. crystal media having low viscosity, relatively high dielectric anisotropy and high nematogenity |
| JPH07199233A (en) * | 1993-12-28 | 1995-08-04 | Dainippon Ink & Chem Inc | Liquid crystal element and display using the element |
| US20040149957A1 (en) * | 2001-07-12 | 2004-08-05 | Kelly Stephen M | Liquid crystal compounds |
| JP2005239639A (en) * | 2004-02-26 | 2005-09-08 | Nitto Denko Corp | Ion conductor |
| EP1780193A1 (en) * | 2004-07-27 | 2007-05-02 | Japan Science and Technology Agency | Liquid crystal material, method for producing liquid crystal material and liquid crystal device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113088295A (en) * | 2021-04-07 | 2021-07-09 | 浙江汽车仪表有限公司 | Display material for automobile full-liquid crystal instrument panel |
| CN113088295B (en) * | 2021-04-07 | 2023-02-17 | 浙江汽车仪表有限公司 | Display material for automobile full-liquid crystal instrument panel |
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