CN105295957A - Liquid crystal composition and display element or displayer with same - Google Patents
Liquid crystal composition and display element or displayer with same Download PDFInfo
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- CN105295957A CN105295957A CN201510671120.9A CN201510671120A CN105295957A CN 105295957 A CN105295957 A CN 105295957A CN 201510671120 A CN201510671120 A CN 201510671120A CN 105295957 A CN105295957 A CN 105295957A
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- compound
- liquid
- liquid crystal
- general formula
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- 0 CCOC(CC1)CC=C1C(CC1)=CC=C1C1CCC(*)CC1 Chemical compound CCOC(CC1)CC=C1C(CC1)=CC=C1C1CCC(*)CC1 0.000 description 8
- XDTMQSROBMDMFD-UHFFFAOYSA-N C1CCCCC1 Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 2
- UAEPNZWRGJTJPN-UHFFFAOYSA-N CC1CCCCC1 Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 1
- PYLWMHQQBFSUBP-UHFFFAOYSA-N Fc1ccccc1 Chemical compound Fc1ccccc1 PYLWMHQQBFSUBP-UHFFFAOYSA-N 0.000 description 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N c1ccccc1 Chemical compound c1ccccc1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a liquid crystal composition and a display element or displayer with the same. The liquid crystal composition contains one or more of compounds with the general formula I, compounds with the general formula II, compounds with the general formula III and compounds with the general formula IV, wherein R1, R2, R3, R5 and R6 indicate straight-chain alkyl groups with the carbon atom number of 1-5, R4 indicates straight-chain alkyl groups with the H or carbon atom number of 1-3, and X1 indicates H or F. The liquid crystal composition is high in response speed, large in dielectric anisotropy and moderate in optical anisotropy, has good light stability and heat stability and is especially suitable for IPS liquid crystal display devices.
Description
Technical field
The present invention relates to a kind of liquid-crystal composition and comprise liquid crystal display device or the liquid-crystal display of this liquid-crystal composition.
Background technology
At present, it is more and more wider that the range of application of liquid crystalline cpd is expanded, and it can be applicable in polytype indicating meter, electro-optical device, sensor.For liquid crystalline cpd of a great variety in above-mentioned display field, wherein nematic liquid crystal is most widely used.Nematic liquid crystal has been applied in passive TN, STN matrix display and has had in the system of tft active matrix.
For thin-film transistor technologies (TFT-LCD) Application Areas, although market is very huge in recent years, technology is also ripe gradually, people to the requirement of technique of display also in continuous raising, especially in realization response fast, driving voltage is reduced to reduce the aspects such as power consumption.Liquid crystal material as one of important photoelectron material of liquid-crystal display, the effect important to the performance improving liquid-crystal display.
As liquid crystal material, need to have good chemistry and thermostability and the stability to electric field and electromagnetic radiation.And as thin-film transistor technologies (TFT-LCD) liquid crystal material, not only need to have as outside upward stability, also should have the performances such as wider nematic temperature range, suitable degree of birefringence anisotropy, very high resistivity, good anti-ultraviolet property, high electric charge conservation rate and low-steam pressure.
For dynamic menu display application, eliminate display frame ghost and hangover, require that liquid crystal has very fast response speed, therefore require that liquid crystal has lower rotary viscosity γ
1; In addition, for handheld device, in order to reduce equipment energy consumption, wish that the driving voltage of liquid crystal is low as far as possible; And for the indicating meter of the purposes such as TV, the driving voltage for liquid crystal requires it is not so low.
The viscosity of liquid crystalline cpd, especially rotary viscosity γ
1direct affect liquid crystal power up after time of response, no matter be rise time (t
on) or fall time (t
off), all with the rotary viscosity γ of liquid crystal
1proportional, rise time (t
on) due to relevant with liquid crystal cell and driving voltage, can be regulated with reduction liquid crystal cell box is thick by the method strengthening driving voltage; And fall time (t
off) have nothing to do with driving voltage, mainly thick relevant with liquid crystal cell box with the elastic constant of liquid crystal, the decline that box is thick can reduce fall time (t
off), and under different display modes, the mode of motion of liquid crystal molecule is different, TN, IPS, VA Three models is respectively at average elastic constants K, distortion elastic constant, bend elastic constant inversely.
According to liquid crystal continuum theory, after there is deformation in various different liquid crystal under external force (electric field, magnetic field) effect, can by intermolecular interaction, original shape is returned in meeting " resilience "; Same, liquid crystal is also because intermolecular interaction force forms " viscosity ".The subtle change of liquid crystal molecule, can make the conventional parameter performance of liquid crystal that significantly change occurs, these changes have plenty of certain rule, what have almost not easily finds rule, also obvious impact can be produced for the interaction between liquid crystal molecule, these impacts are very delicate, also do not form very perfect theoretical explanation so far.
The viscosity of liquid crystal is relevant with liquid crystal molecule structure, and the relation studied between the viscosity of the liquid crystal system that different liquid crystal molecule is formed and liquid crystal molecule structure is one of vital task of dispensing liquid crystal slip-stick artist.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of liquid-crystal composition and use liquid crystal display device or the liquid-crystal display of this liquid-crystal composition, this liquid-crystal composition has lower viscosity, quick response can be realized, there is the performances such as larger dielectric anisotropy Δ ε, moderate optical anisotropy Δ n, the high stability to light and heat, good anti-ultraviolet property, high electric charge conservation rate and low-steam pressure simultaneously.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of liquid-crystal composition, comprises one or more generalformulaⅰcompounds, one or more general formula II compounds, one or more general formula III compounds, one or more general formulae IV compounds,
Wherein, R
1, R
2, R
3, R
5, R
6for carbonatoms is the straight chained alkyl of 1 ~ 5, R
4for H or carbonatoms are the straight chained alkyl of 1 ~ 3, X
1represent H or F.
Δ n [589nm, 25 DEG C] > 0.08, Δ ε [1KHz, 25 DEG C] > 2, the clearing point Cp > 70.0 DEG C of liquid-crystal composition provided by the present invention, rotary viscosity γ
1[25 DEG C] are between 40 ~ 110mPas.
Liquid-crystal composition formula of I compound quality percentage composition provided by the present invention is 5 ~ 30%, general formula II compound quality percentage composition is 5 ~ 20%, general formula III compound quality percentage composition is 20 ~ 50%, and general formulae IV compound quality percentage composition is 5 ~ 20%.
Invent the liquid-crystal composition component that provides more preferably: generalformulaⅰcompound is formula I 1 ~ I 4 compound, general formula II compound is formula II 1 ~ II 5 general formula compound, general formula III compound is formula III 1 ~ III 4 general formula compound, and general formulae IV compound is formula IV 1 ~ IV 8 compound
The dielectric anisotropy Δ ε of formula I 1 ~ I 4 compound between 25 ~ 30, and has low rotary viscosity simultaneously, and clearing point is more than 120 DEG C, and Δ n, more than 0.2, is conducive in raising liquid-crystal composition Δ ε, improves clearing point, improves Δ n.
The alkyl chain carbon atomicity of formula II 1 ~ II 5 is many, and the CP of liquid crystal can be higher, but viscosity can increase simultaneously.
Formula III 1 ~ III 4 compound has very low rotary viscosity γ
1, close to neutral dielectric anisotropy Δ ε, less optical anisotropy Δ n, improving liquid crystal viscosity, low-temperature performance has advantage.Different alkyl substituents is to the rotary viscosity γ of liquid crystal
1, clearing point CP has impact, general longer alkyl chain or alkenylene chain can strengthen the rotary viscosity γ of liquid crystal
1improve clearing point CP simultaneously.
IV 1 to IV 8 compound has larger elastic constant K (K11, K22, K33 are larger), high clearing point CP (higher than 200 DEG C), but also there is viscosity γ 1 bigger than normal simultaneously, can be used for K value parameter and the clearing point CP of adjustable liquid crystal display.IV 1 to IV 8 compound dielectric anisotropy Δ ε is basic close to neutral, and IV 1 to IV 5 compound has side direction fluorine atom, is conducive to the mutual solubility improving liquid crystal.
Can also add compound shown in one or more formulas V in liquid-crystal composition provided by the present invention, its mass percentage is 1 ~ 25%,
R
7for the thiazolinyl that carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms is 2 ~ 5, X
2, X
3for H or F.
Compound shown in formula V is with following formula V 1 ~ V 3 compound:
Shown in above-mentioned formula V 1 ~ V 3, compound generally has the mutual solubility good with other liquid crystal, and along with the increase of fluorine atom substituent, V 1, V 2, V 3 dielectric anisotropy Δ ε increase gradually, and V 1 is about 5, and V 3 reach about 12; Optical anisotropy Δ n within suitable scope, along with the increase by V 1, V 2, V 3 of fluorine atom substituent has reduction trend, close to or be a bit larger tham the Δ n of mixed liquid crystal, between 0.11 to 0.13.
Liquid-crystal composition provided by the present invention, can also add compound shown in one or more formulas VI, and its mass percentage is 1 ~ 20%,
Wherein, n is 0,1,2.
General formula VI compound is formula VI 1 ~ VI 3 compound,
Compound shown in formula VI has higher clearing point CP, and lower viscosity especially has larger elastic constant.Be conducive to improving response speed.
Shown in liquid-crystal composition Chinese style VI provided by the present invention, the mass percentage of compound is 1 ~ 20%.
The different ratios of each composition of liquid-crystal composition, slightly discrepant performance can be shown, the such as nematic phase of dielectric anisotropy Δ ε, optical anisotropy Δ n, liquid crystal is converted into the transition temperature point CP of liquid, low temperature stability inferior all can difference to some extent, can be applied to dissimilar display device, but identical feature is its rotary viscosity γ
1lower.Be applied to liquid crystal display device, quick response can be realized.
Can also add the doping agent of various function in liquid crystalline cpd provided by the present invention, dopant content is preferably between 0.01 ~ 1%, and these doping agents are antioxidant, UV light absorber, chiral agent mainly.
Antioxidant, UV light absorber are preferred:
S represents the integer of 1 ~ 10.
Chiral agent preferred (left-handed or dextrorotation):
The invention still further relates to the liquid crystal display device or indicating meter that use any one liquid-crystal composition above-mentioned, described display element or indicating meter are active matrix display element or indicating meter, passive matrix display element or indicating meter.
Described liquid crystal display device or the preferred active matrix addressed liquid crystal display element of liquid-crystal display or liquid-crystal display.
Described active matrix display element or indicating meter are specially TN-TFT or IPS-TFT liquid crystal display device or indicating meter.
Owing to have employed technique scheme, the technical progress that the present invention obtains is:
Liquid-crystal composition provided by the present invention has lower viscosity, can realize quick response, has moderate dielectric anisotropy Δ ε, moderate optical anisotropy Δ n, the high stability to light and heat simultaneously.
Comprise the liquid crystal material of liquid-crystal composition provided by the present invention, not only there is good chemistry and thermostability and the stability to electric field and electromagnetic radiation.And, as thin-film transistor technologies (TFT-LCD) liquid crystal material, also there is the performances such as wider nematic temperature range, suitable degree of birefringence anisotropy, very high resistivity, good anti-ultraviolet property, high electric charge conservation rate and low-steam pressure.
Embodiment
Below in conjunction with specific embodiment, the present invention is further elaborated, but the present invention is not limited to following examples.Described method is ordinary method if no special instructions.Described raw material all can obtain from open commercial sources if no special instructions.Described per-cent if no special instructions, is mass percent.
In following embodiment, CP represents clearing point, and directly use the micro-thermal analyzer of WRX-1S to measure, setting temperature rise rate is 3 DEG C/min.Δ n represents optical anisotropy (589nm, 20 DEG C), and Δ ε represents dielectric anisotropy (25 DEG C, 1KHz, HP4284A, 5.2 microns of left-handed boxes of TN), γ
1rotary viscosity (mpas) when representing 20 DEG C, VHR (%) represents electric charge conservation rate (5V, 60Hz, 20 DEG C), ρ (× 10
13Ω cm) represent resistivity (20 DEG C), the tester of voltage retention VHR (%) and electricalresistivityρ (× 10
13Ω cm) be TOYO06254 and TOYO6517 type liquid crystal evaluation of physical property system (testing cassete is 7.0 microns for probe temperature 20 DEG C, time 16ms).
Liquid crystal monomer structure coded representation in the embodiment of the present invention, the coded representation method of liquid crystal ring structure, end group, linking group sees the following form (one), shows (two).
Table (one): the corresponding code of ring structure
Table (two): end group and the corresponding code linking group
| End group with link group | Corresponding code |
| C nH 2n+1- | n |
| C nH 2n+1O- | nO |
| -OCF 3 | OCF 3 |
| -CF 2O- | Q |
| -F | F |
| -CH 2＝CH 2- | V |
Such as:
be expressed as 3CCV1,
be expressed as 3BB (3F) B (3F, 5F) QB (3F, 5F) F.
Embodiment 1
Embodiment 2
Embodiment 3
Embodiment 4
Embodiment 5
Embodiment 6
Embodiment 7
As can be seen from the above embodiments: liquid-crystal composition of the present invention has lower rotary viscosity γ
1, for liquid-crystal display, quick response can be realized.Be particularly suitable for TN, IPS pattern liquid crystal material.
Claims (9)
1. a liquid-crystal composition, is characterized in that: containing one or more generalformulaⅰcompounds, one or more general formula II compounds, one or more general formula III compounds, one or more general formulae IV compounds,
Wherein, R
1, R
2, R
3, R
5, R
6for carbonatoms is the straight chained alkyl of 1 ~ 5, R
4for H or carbonatoms are the straight chained alkyl of 1 ~ 3, X
1represent H or F.
2. liquid-crystal composition according to claim 1, it is characterized in that: generalformulaⅰcompound mass percentage is 5 ~ 30%, general formula II compound quality percentage composition is 5 ~ 20%, general formula III compound quality percentage composition is 20 ~ 50%, and general formulae IV compound quality percentage composition is 5 ~ 20%.
3. liquid-crystal composition according to claim 1, it is characterized in that: generalformulaⅰcompound is formula I 1 ~ I 4 compound, general formula II compound is formula II 1 ~ II 5 general formula compound, and general formula III compound is formula III 1 ~ III 4 general formula compound, general formulae IV compound is formula IV 1 ~ IV 8 compound
4. liquid-crystal composition according to claim 1, is characterized in that: also contained V compound, and its mass percentage is 1 ~ 25%,
R
7for the thiazolinyl that carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms is 2 ~ 5, X
2, X
3for H or F.
5. liquid-crystal composition according to claim 4, is characterized in that: formula V compound is formula V 1 ~ V 3 compound,
R
7for the thiazolinyl that carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms is 2 ~ 5.
6. liquid-crystal composition according to claim 1, is characterized in that: also contained VI compound, and its mass percentage is 1 ~ 20%,
Wherein, n is 0,1,2.
7. comprise liquid crystal display device or the liquid-crystal display of arbitrary described liquid-crystal composition in claim 1 ~ 6, it is characterized in that: described display element or indicating meter are active matrix display element or indicating meter, passive matrix display element or indicating meter.
8. liquid crystal display device according to claim 7 or liquid-crystal display, is characterized in that: described active matrix display element or indicating meter are TN-TFT or IPS-TFT liquid crystal display device or indicating meter.
9. liquid crystal display device according to claim 8 or indicating meter, it is characterized in that: liquid-crystal composition formula of I compound quality percentage composition is 6 ~ 20%, general formula II compound quality percentage composition is 10 ~ 20%, general formula III compound quality percentage composition is 20 ~ 45%, the mass percentage of formula IV compound is 10 ~ 20%, the mass percentage of formula V compound is 5 ~ 19%, and the mass percentage of formula VI compound is 5 ~ 20%.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510671120.9A CN105295957B (en) | 2015-10-16 | 2015-10-16 | Liquid-crystal composition and the display element or display using the liquid-crystal composition |
| TW104143909A TWI570224B (en) | 2015-10-16 | 2015-12-25 | A liquid crystal composition, and a display element or a display using the liquid crystal composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510671120.9A CN105295957B (en) | 2015-10-16 | 2015-10-16 | Liquid-crystal composition and the display element or display using the liquid-crystal composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105295957A true CN105295957A (en) | 2016-02-03 |
| CN105295957B CN105295957B (en) | 2017-12-19 |
Family
ID=55193802
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510671120.9A Active CN105295957B (en) | 2015-10-16 | 2015-10-16 | Liquid-crystal composition and the display element or display using the liquid-crystal composition |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105295957B (en) |
| TW (1) | TWI570224B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1862526A1 (en) * | 2006-05-31 | 2007-12-05 | Chisso Corporation | Liquid crystal compositions and liquid crystal display device |
| CN102666785A (en) * | 2009-09-24 | 2012-09-12 | 捷恩智株式会社 | Liquid-crystal composition and liquid-crystal display element |
| US20120313043A1 (en) * | 2011-06-13 | 2012-12-13 | Jnc Petrochemical Corporation | Compound, liquid crystal composition and liquid crystal display device |
| CN104039926A (en) * | 2012-10-05 | 2014-09-10 | Dic株式会社 | Liquid crystal composition and liquid crystal display element produced using same |
| CN104145004A (en) * | 2013-03-25 | 2014-11-12 | Dic株式会社 | Liquid crystal composition and liquid crystal display element using same |
| CN104718274A (en) * | 2013-03-05 | 2015-06-17 | Dic株式会社 | Liquid crystal composition and liquid crystal display element using same |
| CN104812872A (en) * | 2013-03-04 | 2015-07-29 | Dic株式会社 | Liquid crystal composition and liquid crystal display element using same |
| CN104837958A (en) * | 2012-12-14 | 2015-08-12 | 捷恩智株式会社 | Liquid crystal composition and liquid crystal display element |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103254912B (en) * | 2013-05-30 | 2015-07-01 | 石家庄诚志永华显示材料有限公司 | Nematic phase liquid crystal composition |
-
2015
- 2015-10-16 CN CN201510671120.9A patent/CN105295957B/en active Active
- 2015-12-25 TW TW104143909A patent/TWI570224B/en active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1862526A1 (en) * | 2006-05-31 | 2007-12-05 | Chisso Corporation | Liquid crystal compositions and liquid crystal display device |
| CN102666785A (en) * | 2009-09-24 | 2012-09-12 | 捷恩智株式会社 | Liquid-crystal composition and liquid-crystal display element |
| US20120313043A1 (en) * | 2011-06-13 | 2012-12-13 | Jnc Petrochemical Corporation | Compound, liquid crystal composition and liquid crystal display device |
| CN104039926A (en) * | 2012-10-05 | 2014-09-10 | Dic株式会社 | Liquid crystal composition and liquid crystal display element produced using same |
| CN104837958A (en) * | 2012-12-14 | 2015-08-12 | 捷恩智株式会社 | Liquid crystal composition and liquid crystal display element |
| CN104812872A (en) * | 2013-03-04 | 2015-07-29 | Dic株式会社 | Liquid crystal composition and liquid crystal display element using same |
| CN104718274A (en) * | 2013-03-05 | 2015-06-17 | Dic株式会社 | Liquid crystal composition and liquid crystal display element using same |
| CN104145004A (en) * | 2013-03-25 | 2014-11-12 | Dic株式会社 | Liquid crystal composition and liquid crystal display element using same |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201715027A (en) | 2017-05-01 |
| TWI570224B (en) | 2017-02-11 |
| CN105295957B (en) | 2017-12-19 |
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