CN102660296A - Liquid crystal composition and application thereof - Google Patents
Liquid crystal composition and application thereof Download PDFInfo
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- CN102660296A CN102660296A CN2012101518964A CN201210151896A CN102660296A CN 102660296 A CN102660296 A CN 102660296A CN 2012101518964 A CN2012101518964 A CN 2012101518964A CN 201210151896 A CN201210151896 A CN 201210151896A CN 102660296 A CN102660296 A CN 102660296A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 123
- 239000000203 mixture Substances 0.000 title abstract description 34
- 150000001875 compounds Chemical class 0.000 claims abstract description 68
- 239000004988 Nematic liquid crystal Substances 0.000 claims abstract description 55
- 125000003545 alkoxy group Chemical group 0.000 claims description 9
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 claims description 8
- 239000013543 active substance Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000004044 response Effects 0.000 abstract description 37
- 239000000463 material Substances 0.000 description 25
- 0 *C(CC1)CCC1C(CC1)CCC1C1C[C@@](*)C(*)C(*)C1 Chemical compound *C(CC1)CCC1C(CC1)CCC1C1C[C@@](*)C(*)C(*)C1 0.000 description 10
- 230000005684 electric field Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- -1 biphenyl acetylene compound Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 210000002858 crystal cell Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- PHCRCWISOWNQOD-UHFFFAOYSA-N CC(C12)C1C2c1ccc(C2CCC(C)CC2)cc1 Chemical compound CC(C12)C1C2c1ccc(C2CCC(C)CC2)cc1 PHCRCWISOWNQOD-UHFFFAOYSA-N 0.000 description 1
- RPMUDXVQHUECRE-UHFFFAOYSA-N CC1COC(C)OC1 Chemical compound CC1COC(C)OC1 RPMUDXVQHUECRE-UHFFFAOYSA-N 0.000 description 1
- BBHJTCADCKZYSO-UHFFFAOYSA-N CCC(CC1)CCC1c(cc1)ccc1C#N Chemical compound CCC(CC1)CCC1c(cc1)ccc1C#N BBHJTCADCKZYSO-UHFFFAOYSA-N 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Chemical group C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- ZBYZQILPNKOESD-UHFFFAOYSA-N isothiocyanato cyanate Chemical group S=C=NOC#N ZBYZQILPNKOESD-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K2019/0444—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group
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- Liquid Crystal Substances (AREA)
Abstract
The invention provides a liquid crystal composition and an application thereof. Based on 100 percent by mass of the composition, the liquid crystal composition comprises the following components in percentage by mass: 0-70 percent of a nematic liquid crystal compound shown as a formula I, 0-50 percent of a nematic liquid crystal compound shown as a formula II, 0-50 percent of a nematic liquid crystal compound shown as a formula III, 0-30 percent of a nematic liquid crystal compound shown as a formula IV and 0-30 percent of a nematic liquid crystal compound shown as a formula V. The liquid crystal composition has high birefringence rate, and has the characteristics of high upper limit temperature of a nematic phase, low lower limit temperature of the nematic phase, low rotation viscosity, high response speed and the like. The liquid crystal composition provided by the invention can be applied in the fields of variable-focus liquid crystal lenses and the like.
Description
Technical field
The present invention relates to a kind of liquid-crystal compsn, relate in particular to a kind of nematic liquid crystal composition.Liquid-crystal compsn of the present invention can be used for varifocal liquid crystal lens fields such as (Liquid Crystal lens).
Background technology
1888, F.Reinitzer found that some compound experiences an opaque muddy state after thawing when measuring the organic cpds fusing point, and the liquid intermediate phase of this muddiness has and the crystal similar phenomena, and is called liquid crystal.The seventies in 20th century is because the development of large-scale integrated circuit and liquid crystal material; The application of liquid crystal aspect demonstration had breakthrough progress; Utilize the electrooptic effect and the unicircuit of twisted nematic liquid crystal to combine, be made into display device, realized the industrialization of liquid crystal material; This liquid crystal material is called twisted nematic liquid crystal and shows (TN-LCD) material, and its product is mainly used on Die elektrische Zeituhr and the counter.The mid-80 is succeeded in developing the supertwist nematic liquid crystal and is shown (STN-LCD) material, and its product is mainly used on beeper, mobile telephone and the notebook computer.1993; Grasped the production technology of array driving liquid crystal TFT-LCD in Japan after; Liquid-crystal display has begun rapid development, and now lcd technology has become the main flow of technique of display, and liquid-crystal display just is illustrated in face of the people with colourful form; Its many products are because its excellent characteristic makes its pursuit that is just becoming fashion, and very powerful and exceedingly arrogant commodity in the market.
Devices such as camera, mobile phone camera, the demonstration of 3D stereopsis, phase modulator often utilize zoom lens that image is amplified or dwindles and form images.The traditional zoom camera lens is provided with a plurality of mirror crowds (lens group), through moving along optical axis direction between the mirror crowd, with change spacing each other, thereby whole focal length is changed, but does not influence image-forming range.Yet this kind camera lens needs long mirror crowd miles of relative movement, causes the mechanism volume of this focusing big, regulates slowly, focusing range is limited, cost an arm and a leg, install that to drive consumed energy big and damage easily etc.
For seeking the method that substitutes mechanical focusing; And can change focal length on a large scale; Prior art discloses a kind of liquid-crystal zoom lens that utilizes electric field to control focal length (Liquid Crystal lens); Form special electric field through on the electrode of band circular hole, applying voltage, the liquid crystal molecule in the electric field is deflected, thereby light is played the effect that disperses or assemble.It is actual to be a kind of simulated optical element, through between electrode, applying the specific optical lens characteristic that different voltages with different can realize easily that we want.
Prior art also discloses a kind of column liquid crystal lens grating that utilizes electric field to form lens in addition; Realize 3D stereo display; Through on transparent glass substrate, etching the strip transparent ITO electrode, on this electrode, apply different voltages with different then and form electric field, the liquid crystal molecule in the electric field is deflected; Thereby change the incident direction of light, the variation of variation through voltage and number of electrodes simultaneously changes focal length and the pitch of column liquid crystal lens grating etc.
For realizing the meliority of the column physical grating that column liquid crystal lens grating is more traditional, need column liquid crystal lens grating under 60Hz, 120Hz or higher frequency, can freely switch, to this, then need a kind of liquid-crystal compsn with high speed response property.
Following relation is arranged between each variable relevant with the response performance of column liquid crystal lens grating, liquid-crystal compsn:
Relational expression one:
T
on=(γ1d
2/k
11π
2)/[(V/Vth)
2-1]
Relational expression two:
T
off＝γ1d
2/k
11π
2
Wherein, γ
1Be rotary viscosity, d is a thickness of liquid crystal layer, K
11Be the bent elastic constant of exhibition, V is a driving voltage, and Vth is a threshold voltage.
Can find out from the above-mentioned relation formula, the rotary viscosity through reducing liquid-crystal compsn or improve it and open up bent elastic constant, or reduce thickness of liquid crystal layer, can shorten its time of response.Yet if reduce rotary viscosity to improve the time of response, the elastic constant of liquid crystal and transformation temperature also will descend thereupon, and if elastic constant increases, then threshold voltage and rotary viscosity will be tending towards increasing.Simultaneously, if reduce thickness of liquid crystal layer, then the degree of birefringence of liquid-crystal compsn will increase, and this can cause rotary viscosity to increase equally.Therefore, for improving the time of response, it is minimum that the equilibrium relationship between these three influence factors must reduce to.
The column liquid crystal lens is used in stereo display like 3D, uses calculation formula f=r according to lens
2/ (2 Δ nd), r represents 1/2 this lens pitch, and Δ n represents the degree of birefringence of liquid crystal, and d represents the box of liquid crystal cell thick, and more specifically drawing needs degree of birefringence (Δ n) greater than more than 0.25, needs littler viscoelastic coefficient ratio, wideer transformation temperature scope simultaneously.
Degree of birefringence (Δ n) is an important physical characteristic of liquid crystalline cpd.Double refraction receives benzene ring structure and the domination of π key end group in the liquid crystal molecule to a great extent; Therefore; It is relevant with the dielectric anisotropy of molecule that this attributes is actually, and the molecule with big dielectric anisotropy often also has big Δ n, but also have the situation of exception to exist.In the compsn that the homologous series compound is formed, Δ n is usually linear with component concentrations.Therefore the liquid crystal that generally contains isothiocyano, cyanic acid, ester group, alkoxyl group, phenyl ring or acetylene bond all has bigger optical anisotropy.Common TN, STN show that Δ n with the mixed liquid crystal material is generally between 0.12 to 0.20; TFT shows that Δ n with liquid crystal material is generally between 0.065 to 0.135; PDLC and multistable show generally need be greater than 0.20 with the Δ n of liquid crystal material, and 3D stereo display generally is greater than 0.25 with the Δ n of the liquid crystal material of liquid crystal lens (Liquid Crystal lens).
Because each is different for the physicals of each component of mixed liquid crystal material, the parameters combination that therefore is difficult to realize ideal, need monomer liquid crystal select and set of dispense than aspect do further optimization.
Summary of the invention
One of the object of the invention provides a kind of liquid-crystal compsn and application thereof with bigger degree of birefringence.
Liquid-crystal compsn with bigger degree of birefringence provided by the present invention also has nematic ceiling temperature height, characteristics such as nematic lower limit temperature is low, rotary viscosity is low, high response speed simultaneously.
This liquid-crystal compsn can be used for TN demonstration, STN demonstration, PDLC demonstration, multistable demonstration, phase modulator and camera, mobile phone camera, liquid crystal shutter 3D glasses, 3D stereo display liquid crystal crack grating, the 3D stereopsis shows with varifocal liquid crystal lens fields such as (Liquid Crystal lens).
For realizing above-mentioned purpose, the technical scheme that the present invention taked is:
This liquid-crystal compsn comprises: the total mass with liquid-crystal compsn is 100%,
The nematic liquid crystal compound 0-70% that the formula I is represented,
The nematic liquid crystal compound 0-50% that the formula II is represented,
The nematic liquid crystal compound 0-50% that the formula III is represented,
The nematic liquid crystal compound 0-30% that the formula IV is represented, and
The nematic liquid crystal compound 0-30% that the formula V is represented;
In this liquid-crystal compsn, the nematic liquid crystal compound of representing with the formula I:
Wherein, R1, R2 be independently respectively C1-10 alkyl, C1-10 alkoxyl group ,-NCS ,-CN or-F, K
1, K
2Be H or F independently of one another,
This compounds has extremely low viscosity, can effectively reduce the overall viscosity of mixture crystal formulations, improves response speed.
The formula I is preferably following compound especially:
In the said composition, the preferred content of formula I compound is 0-45%, and the content that choosing is more arranged is 20%-44%.
The nematic liquid crystal compound that the formula II is represented:
Wherein, R3, R4 be independently respectively C1-10 alkyl, C1-10 alkoxyl group ,-NCS ,-CN or-F, K
3, K
4Be H or F independently of one another, Z is-COO-,-C ≡ C-or-CH
2CH
2-;
Shown nematic liquid crystal compound has moderate degree of birefringence (0.2-0.35), relatively low rotary viscosity (100-200mPa.S) and relatively low transformation temperature (50-100 degree); Also has certain Δ ε value (3-15) simultaneously;, can reduce starting voltage.
The compound of II formula representative is preferably following compound:
The preferred massfraction of formula II compound is 0-45%, and preferred content is 23%-40%.
The nematic liquid crystal compound that the formula III is represented:
Wherein R5, R6 be independently respectively C1-10 alkyl, C1-10 alkoxyl group ,-NCS ,-CN or-F, K
5, K
6, K
7, K
8, K
9, K
10Be H or F independently of one another,
The III compounds is compared with the biphenyl acetylene compound, has higher clearing point, has bigger degree of birefringence Δ n simultaneously, can improve the Δ n of mixed liquid crystal compsn effectively, thereby the box that reduces liquid crystal cell is thick, improves response speed.
The compound of formula III representative is preferably following compound:
The content of formula III compound is preferably 0-35% especially, and the content that choosing is more arranged is 19%-39%.
The nematic liquid crystal compound that the formula IV is represented:
Wherein R7, R8 be independently respectively C1-10 alkyl, C1-10 alkoxyl group ,-NCS ,-CN or-F, K
11, K
12, K
13, K
14, K
15, K
16Be H or F independently of one another,
X, Y be respectively-COO-,-C ≡ C-or-CH
2CH
2-.
This compounds has moderate degree of birefringence, moderate clearing point, moderate starting voltage, especially the more important thing is higher relatively elastic constant K11, can reduce liquid-crystal compsn viscoelastic coefficient effectively, shortens the time of response.
The compound of IV representative is particularly preferably following:
The content of formula IV compound is preferably 0-5% especially, and preferred content is 0%-2%.
The nematic liquid crystal compound that the formula V is represented:
Wherein R9, R10 be independently respectively C1-10 alkyl, C1-10 alkoxyl group ,-NCS ,-CN or-F, K
17, K
18Be H or F independently of one another,
This compounds has extremely low rotary viscosity, and degree of birefringence can be too not low, joins in the mixed liquid crystal system, can greatly reduce the viscoelastic coefficient ratio of system, improves the time of response.
The compound of formula V representative is particularly preferably following:
The content of formula V compound is preferably 0-10% especially, and preferred content is 0%-5%.
In addition, with containing the optically active substance compound according to needing, wherein, the mass ratio of the nematic phase liquid crystal composition that need state and described optically active substance compound is 100: 0.01-100: 5.0, and excellent especially selectively is 100: 0.01-100: 2.0.
Above-mentioned optically active substance mainly includes but are not limited to following several kinds of materials: CB15, R/S-811, R/S-1011 etc.
Liquid-crystal compsn of the present invention can adopt ordinary method that two or more liquid crystalline cpds are mixed and produce.As at high temperature mix different compounds and dissolved method preparation each other.
The invention has the beneficial effects as follows: the situation that is different from prior art; Nematic liquid crystal composition of the present invention is through the moity of this nematic liquid crystal composition of change and the massfraction of each composition; And obtain bigger degree of birefringence and lower rotary viscosity, can reduce the thick and raising response speed of box of device.
Nematic phase nematic liquid crystal composition of the present invention satisfies also that nematic low starting voltage, ceiling temperature are high, nematic lower limit temperature is low, rotary viscosity is low, high response speed, optical anisotropy is big, dielectric anisotropy is big, to ultraviolet stability height, at least a characteristic in the stable high characteristic of heat.Nematic phase nematic liquid crystal composition of the present invention has the characteristics of the relevant suitable balance of at least two specific characters.
Embodiment
Be embodiments of the invention below, through embodiment and combine specification sheets of the present invention, can be expressly understood the present invention, but scope of the present invention be not limited to these embodiment.
For the ease of expressing, below among each embodiment, the unit structure of liquid crystalline cpd is with the listed coded representation of table 1:
The unit structure code of table 1 liquid crystalline cpd
Compound with following structural formula is an example:
This structural formula then can be expressed as: nCPTWNCS as with the listed coded representation of table 1.N in the code representes the C atomicity of left end alkyl, and for example n is 3, representes that promptly this alkyl is-C
3H
7C in the code represents cyclohexyl; P in the code represents phenylene; W in the code represents 3,5-difluoro phenylene; NCS in the code represents isothiocyano-NCS.
The related physical performance perameter code name and the testing conditions that need detect in an embodiment are listed below:
Embodiment 1:
The nematic liquid crystal composition of embodiment 1 is made up of following compound, wherein percentage ratio representation quality mark:
The nematic liquid crystal composition performance perameter table of this embodiment 1
| Tni： | 85℃ |
| Tcn： | -20℃ |
| ε∥ | 20.28 |
| ε⊥ | 5.11 |
| Δε： | 15.17 |
| Δn： | 0.378 |
| K11： | 9.82 |
| K33： | 19.0 |
| γ1： | 104mpa.s |
| γ1/K11： | 10.59 |
| Vth： | 0.77V |
Use the liquid crystal lens grating of this liquid-crystal compsn, its time of response T=540ms, corresponding liquid crystal lens focal distance f=1.02mm; And use existing in the market liquid crystal material E7, its time of response T=1210ms, corresponding liquid crystal lens focal distance f=1.85mm.Then use liquid crystal material of the present invention, the time of response has promoted 55%, and focal length has reduced 45%.
Embodiment 2:
The nematic liquid crystal composition of embodiment 2 is made up of following compound, wherein percentage ratio representation quality mark:
The nematic liquid crystal composition performance perameter table of this embodiment 2
| Tni： | 83℃ |
| Tcn： | -20℃ |
| ε∥ | 20.63 |
| ε⊥ | 5.49 |
| Δε： | 15.24 |
| Δn： | 0.354 |
| K11： | 10.7 |
| K33： | 16.4 |
| γ1： | 93mpa.s |
| γ1/K11： | 8.87 |
| Vth： | 0.72V |
Use the liquid crystal lens grating of this liquid-crystal compsn, its time of response T=500ms, corresponding liquid crystal lens focal distance f=1.08mm; And use existing in the market liquid crystal material E7, its time of response T=1210ms, corresponding liquid crystal lens focal distance f=1.85mm.Then use liquid crystal material of the present invention, the time of response has promoted 59%, and focal length has reduced 42%.
Embodiment 3:
The nematic liquid crystal composition of embodiment 3 is made up of following compound, wherein percentage ratio representation quality mark:
The nematic liquid crystal composition performance perameter table of this embodiment 3
| Tni： | 95℃ |
| Tcn： | -15℃ |
| ε∥ | 21.29 |
| ε⊥ | 6.19 |
| Δε： | 15.2 |
| Δn： | 0.347 |
| K11： | 10.4 |
| K33： | 19 |
| γ1： | 113mpa.s |
| γ1/K11： | 10.86 |
| Vth： | 0.63V |
Use the liquid crystal lens grating of this liquid-crystal compsn, its time of response T=605ms, corresponding liquid crystal lens focal distance f=1.10mm; And use existing in the market liquid crystal material E7, its time of response T=1210ms, corresponding liquid crystal lens focal distance f=1.85mm.Then use liquid crystal material of the present invention, the time of response has promoted 50%, and focal length has reduced 41%.
Embodiment 4:
The nematic liquid crystal composition of embodiment 4 is made up of following compound, wherein percentage ratio representation quality mark:
The nematic liquid crystal composition performance perameter table of this embodiment 4
| Tni： | 90℃ |
| Tcn： | -20℃ |
| ε∥ | 21.21 |
| ε⊥ | 4.65 |
| Δε： | 116.56 |
| Δn： | 0.387 |
| K11： | 11.4 |
| K33： | 18.8 |
| γ1： | 111mpa.s |
| γ1/K11： | 10.61 |
| Vth： | 0.76V |
Use the liquid crystal lens grating of this liquid-crystal compsn, its time of response T=598ms, corresponding liquid crystal lens focal distance f=1.01mm; And use existing in the market liquid crystal material E7, its time of response T=1210ms, corresponding liquid crystal lens focal distance f=1.85mm.Then use liquid crystal material of the present invention, the time of response has promoted 51%, and focal length has reduced 45%.
Embodiment 5:
The nematic liquid crystal composition of embodiment 5 is made up of following compound, wherein percentage ratio representation quality mark:
The nematic liquid crystal composition performance perameter table of embodiment 5
| Tni： | 78℃ |
| Tcn： | -20℃ |
| ε∥ | 19.78 |
| ε⊥ | 4.72 |
| Δε： | 15.06 |
| Δn： | 0.337 |
| K11： | 10.9 |
| K33： | 17.8 |
| γ1： | 101mpa.s |
| γ1/K11： | 9.26 |
| Vth： | 0.76V |
Use the liquid crystal lens grating of this liquid-crystal compsn, its time of response T=540ms, corresponding liquid crystal lens focal distance f=1.15mm; And use existing in the market liquid crystal material E7, its time of response T=1210ms, corresponding liquid crystal lens focal distance f=1.85mm.Then use liquid crystal material of the present invention, the time of response has promoted 55%, and focal length has reduced 38%.
Embodiment 6:
The nematic liquid crystal composition of embodiment 6 is made up of following compound, wherein percentage ratio representation quality mark:
The nematic liquid crystal composition performance perameter table of this embodiment 6
| Tni： | 85℃ |
| Tcn： | -20℃ |
| ε∥ | 20.87 |
| ε⊥ | 4.83 |
| Δε： | 16.14 |
| Δn： | 0.371 |
| K11： | 11.1 |
| K33： | 19.8 |
| γ1： | 75mpa.s |
| γ1/K11： | 6.75 |
| Vth： | 0.81V |
Use the liquid crystal lens grating of this liquid-crystal compsn, its time of response T=470ms, corresponding liquid crystal lens focal distance f=1.02mm; And use existing in the market liquid crystal material E7, its time of response T=1210ms, corresponding liquid crystal lens focal distance f=1.85mm.Then use liquid crystal material of the present invention, the time of response has promoted 61%, and focal length has reduced 45%.
Embodiment 7:
The nematic liquid crystal composition of embodiment 7 is made up of following compound, wherein percentage ratio representation quality mark:
The nematic liquid crystal composition performance perameter table of this embodiment 7
| Tni： | 90℃ |
| Tcn： | -20℃ |
| ε∥ | 24.91 |
| ε⊥ | 5.12 |
| Δε： | 19.79 |
| Δn： | 0.415 |
| K11： | 11.9 |
| K33： | 21.7 |
| γ1： | 86mpa.s |
| γ1/K11： | 7.22 |
| Vth： | 0.76V |
Use the liquid crystal lens grating of this liquid-crystal compsn, its time of response T=485ms, corresponding liquid crystal lens focal distance f=0.85mm; And use existing in the market liquid crystal material E7, its time of response T=1210ms, corresponding liquid crystal lens focal distance f=1.85mm.Then use liquid crystal material of the present invention, the time of response has promoted 60%, and focal length has reduced 54%.
In addition; To above-mentioned seven embodiment; Can add the optically active substance compound according to actual needs as the VI compounds; Its content is the 0-5% of this nematic liquid crystal composition massfraction, particularly preferably is 0-1%, and above-mentioned optically active substance mainly includes but are not limited to following several kinds of chiral additiveses: like CB15, R-811, S-811, R-1011, S-1011 etc.
Among the embodiments of the invention 1-7; Degree of birefringence Δ n is respectively 0.337,0.347,0.354,0.371,0.378,0.387 and 0.415; All belong to bigger degree of birefringence; And itself have chemicalstability height, characteristics that light stability is high, except satisfying above-mentioned requirements, also have following beneficial effect:
1, starting voltage be 0.63V between the 0.81V, satisfy low starting voltage; Tcn is-20 ℃--15 ℃, Tni is between 78-112 ℃, and promptly the nematic phase ceiling temperature is high, lower limit temperature is low, and is lower to temperature dependency;
2, rotary viscosity γ 1 is respectively 75mpa.s, 86mpa.s, 93mpa.s, 101mpa.s, 104mpa.s, 111mpa.s and 113mpa.s, all belongs to lower rotary viscosity;
3, prior, embodiments of the invention 1-7 has very low viscoelastic coefficient ratio, and all below 11, and the viscoelastic coefficient is to influence time of response very important factor;
Liquid-crystal compsn of the present invention is through the moity of this nematic liquid crystal composition of change and the massfraction of each composition; Thereby reduce the thick one-tenth-value thickness 1/10 of nematic LCD box, increase response speed and obtain bigger degree of birefringence, make liquid crystal display product move towards lightening.
In sum, liquid-crystal compsn of the present invention also has the low starting voltage of nematic phase, high, the characteristics such as nematic lower limit temperature is low, rotary viscosity is low, high response speed of ceiling temperature.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification sheets of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (11)
1. liquid-crystal compsn, comprising: the total mass with compsn is 100%,
The nematic liquid crystal compound 0-70% that the formula I is represented,
The nematic liquid crystal compound 0-50% that the formula II is represented,
The nematic liquid crystal compound 0-50% that the formula III is represented,
The nematic liquid crystal compound 0-30% that the formula IV is represented, and
The nematic liquid crystal compound 0-30% that the formula V is represented;
The formula I
Wherein, R1, R2 are C respectively independently
1-10Alkyl, C
1-10Alkoxyl group ,-NCS ,-CN or-F, K
1, K
2Be H or F independently of one another,
Wherein, R3, R4 are C respectively independently
1-10Alkyl, C
1-10Alkoxyl group ,-NCS ,-CN or-F, K
3, K
4Be H or F independently of one another, Z is-COO-,-C ≡ C-or-CH
2CH
2-;
formula III
Wherein R5, R6 be independently respectively C1-10 alkyl, C1-10 alkoxyl group ,-NCS ,-CN or-F, K
5, K
6, K
7, K
8, K
9, K
10Be H or F independently of one another,
Wherein R7, R8 be independently respectively C1-10 alkyl, C1-10 alkoxyl group ,-NCS ,-CN or-F, K
11, K
12, K
13, K
14, K
15, K
16Be H or F independently of one another,
X, Y be independently of one another-COO-,-C ≡ C-or-CH
2CH
2-;
The formula V
Wherein R9, R10 be independently respectively C1-10 alkyl, C1-10 alkoxyl group ,-NCS ,-CN or-F, K
17, K
18Be H or F independently of one another,
2. liquid-crystal compsn according to claim 1 is characterized in that said formula I compound is selected from following any or several kinds
3. liquid-crystal compsn according to claim 1 is characterized in that said formula II compound is selected from following any or several kinds
4. liquid-crystal compsn according to claim 1 is characterized in that said formula III compound is selected from following any or several kinds
5. liquid-crystal compsn according to claim 1 is characterized in that said formula IV compound is selected from following any or several kinds
6. liquid-crystal compsn according to claim 1 is characterized in that said formula V compound is selected from following any or several kinds
7. liquid-crystal compsn according to claim 1 is characterized in that comprising
The nematic liquid crystal compound 0-45% that the formula I is represented,
The nematic liquid crystal compound 0-45% that the formula II is represented,
The nematic liquid crystal compound 0-35% that the formula III is represented,
The nematic liquid crystal compound 0-5% that the formula IV is represented, and
The nematic liquid crystal compound 0-10% that the formula V is represented;
8. liquid-crystal compsn according to claim 1 is characterized in that comprising
The nematic liquid crystal compound 20-44% that the formula I is represented,
The nematic liquid crystal compound 23-40% that the formula II is represented,
The nematic liquid crystal compound 19-39% that the formula III is represented,
The nematic liquid crystal compound 0-2% that the formula IV is represented, and
The nematic liquid crystal compound 0-3% that the formula V is represented.
9. liquid-crystal compsn according to claim 7 is characterized in that also comprising the optically active substance compound.
10. the application of arbitrary described liquid-crystal compsn in the varifocal liquid crystal lens of preparation among the claim 1-8.
A kind of liquid-crystal display for preparing 11. utilize arbitrary described liquid-crystal compsn among the claim 1-8.
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| JP2013103425A JP5789637B2 (en) | 2012-05-16 | 2013-05-15 | Liquid crystal composition and its application |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2013237842A (en) | 2013-11-28 |
| JP5789637B2 (en) | 2015-10-07 |
| CN102660296B (en) | 2014-06-04 |
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