CN105199746A - Liquid crystal composition with high UV (ultraviolet) stability - Google Patents
Liquid crystal composition with high UV (ultraviolet) stability Download PDFInfo
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- CN105199746A CN105199746A CN201510638822.7A CN201510638822A CN105199746A CN 105199746 A CN105199746 A CN 105199746A CN 201510638822 A CN201510638822 A CN 201510638822A CN 105199746 A CN105199746 A CN 105199746A
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- 0 C=CC(CC1)CCC1C1CCC(CI=*)CC1 Chemical compound C=CC(CC1)CCC1C1CCC(CI=*)CC1 0.000 description 3
- ZYUDFVYCFLSPEI-UHFFFAOYSA-N C=CC(CC1)CCC1C(CC1)CCC1[IH][IH]N=C Chemical compound C=CC(CC1)CCC1C(CC1)CCC1[IH][IH]N=C ZYUDFVYCFLSPEI-UHFFFAOYSA-N 0.000 description 1
- YZUHEBMERQVKLJ-UHFFFAOYSA-N COC(CC1)CCC1C(CC1)CCC1[N]#CI Chemical compound COC(CC1)CCC1C(CC1)CCC1[N]#CI YZUHEBMERQVKLJ-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a liquid crystal composition with high UV (ultraviolet) stability, comprising one or more additive components composed of compounds shown in a general formula S-1 and/or general formula S-2 as follows. The liquid crystal composition has high UV stability, VHR (voltage holding ratio) of liquid crystal remains same even after being irradiated under 10000MJ UV energy, and the liquid crystal composition has high response speed.
Description
Technical field
The present invention relates to liquid crystal material field, especially a kind of liquid-crystal composition with high UV stability.
Background technology
In recent decades, along with the develop rapidly of information technology and people are to the continuous pursuit of information display methods, liquid-crystal display (LCD) is as the important application of this exotic materials of liquid crystal, obtain the swiftest and the most violent development, liquid crystal display device be utilize liquid crystal material itself to possess optical anisotropy and dielectric anisotropy to carry out work, be widely used at present.Liquid crystal device according to the difference of liquid crystal material and mode of operation, can be designed to different operating mode.
Nineteen sixty-eight RCA Corp. of U.S. R.Williams finds that nematic liquid crystal forms striped farmland under electric field action, and has light scattering phenomenon.G.H.Heilmeir develops into dynamic scattering display format with by it, and makes first liquid-crystal display (LCD) in the world.The people such as nineteen sixty-eight U.S. Heilmeir also proposed guest-host effect (GH) pattern.T.L.Fergason in 1971 etc. propose twisted nematic (TwistedNematic:TN) pattern, N.Clark in 1980 etc. propose ferroelectric liquid crystal mode (FLC), the people such as 1983 ~ 1985 years T.Scheffer successively propose super-twist nematic (SuperTwistedNematic:STN) pattern, traditional TN-LCD technology has developed into STN-LCD and TFT-LCD technology, although the number of scanning lines of STN can reach more than 768 row, but still there is response speed when the temperature increases, the problem such as visual angle and gray scale, therefore big area, high information quantity, colored display adopts Active Matrix LCD At mode mostly.
Different from the simple matrix of passive TN-LCD, STN-LCD, active matrix is provided with a thin film transistor (TFT) in each pixel of liquid crystal display, effectively can overcome crosstalk during non-gated, the static characteristics of display liquid crystal display and number of scanning lines are had nothing to do, therefore substantially increases picture quality.
The application of TFT-LCD from the starting of small consumer electronics product, and then finds its opportunity to develop in PC industry, and especially notebook computer is universal, has promoted the demand of small-medium size panel.Along with the maturation of thin film transistor liquid crystal display screen technology, large scale liquid crystal indicating meter obtained fast development in recent years.
In indicating meter making technology, liquid crystal can be made to stand the severe condition such as uv irradiating, high temperature, this can produce certain destruction to liquid crystal, in liquid crystal, produce free radical cause free chain reaction, cause liquid crystal quality variation, making to produce image retention etc. in procedure for displaying shows bad, therefore need exploitation one stay-in-grade high-quality liquid crystal under high-energy uv irradiating, thus it is bad to reduce display.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of liquid-crystal composition with high UV stability, and the UV that can stand higher-energy irradiates rear liquid crystal voltage conservation rate (VHR) still can not be reduced, and has the performance of response fast simultaneously.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
Have a liquid-crystal composition for high UV stability, described liquid-crystal composition comprises the binder component A of the composition of compound shown in one or more general formulas S-1 and/or general formula S-2, also comprises the B component of the composition of compound shown in one or more general formulae IV,
Wherein,
R
4, R
5represent independently of one another carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms be 3 ~ 5 cycloalkyl, carbonatoms be any one in the straight-chain alkenyl of 2 ~ 5;
R
6represent that carbonatoms is any one in the unbranched alkoxy of 1 ~ 5;
R
7represent that carbonatoms is any one in the straight chained alkyl of 1 ~ 5.
The further improvement of technical solution of the present invention is: described liquid-crystal composition also comprises the component C of the composition of compound shown in one or more formula I, the component D of the composition of compound shown in one or more general formulas II, the component E of the composition of compound shown in one or more general formula III
Wherein,
R
1, R
2represent independently of one another carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms be any one in 3 ~ 5 cycloalkyl;
R
3represent carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms be 3 ~ 5 cycloalkyl, carbonatoms be any one in the straight-chain alkenyl of 2 ~ 5;
Ring A, ring B, ring C, ring D, ring E represent in phenyl ring, trans cvclohexvl basic ring independently of one another any one;
L
1, L
2, L
3, L
4, L
5, L
6, L
7, L
8, L
9, L
10represent in H, F independently of one another any one;
X
1represent F, OCF
3, carbonatoms is any one in the straight chained alkyl of 1 ~ 5;
N represents 0 or 1.
The further improvement of technical solution of the present invention is: in described liquid-crystal composition, the weight percentage that binder component A accounts for liquid-crystal composition is greater than 0.001%, shown in its formula of S-1, the weight percentage of compound is less than or equal to 0.3%, and shown in general formula S-2, the weight percentage of compound is less than or equal to 0.3%.
The further improvement of technical solution of the present invention is: in described liquid-crystal composition, the weight percentage of B component is 10 ~ 60%, the weight percentage of component C is 1 ~ 50%, the weight percentage of component D is 1 ~ 20%, the weight percentage of component E is 1 ~ 50%, and the weight percentage sum of described B component, component C, component D, component E is 100%.
The further improvement of technical solution of the present invention is: compound shown in described general formulae IV is specially the compound shown in following general formulae IV-1 ~ IV-6,
The further improvement of technical solution of the present invention is: compound shown in described formula I is specially the compound shown in following formula I-1 ~ I-3,
Wherein,
R
1represent carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms be any one in 3 ~ 5 cycloalkyl.
The further improvement of technical solution of the present invention is: compound shown in described general formula II is specially the compound shown in following general formula II-1 ~ II-3,
Wherein,
R
2represent carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms be any one in 3 ~ 5 cycloalkyl.
The further improvement of technical solution of the present invention is: compound shown in described general formula III is specially the compound shown in following general formula III-1 ~ III-3,
Wherein,
R
3represent carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms be 3 ~ 5 cycloalkyl, carbonatoms be any one in the straight-chain alkenyl of 2 ~ 5;
L
8, L
9, L
10represent in H, F independently of one another any one;
X
1represent F, OCF
3, carbonatoms is any one in the straight chained alkyl of 1 ~ 5.
The further improvement of technical solution of the present invention is: also comprise chiral dopant that is left-handed or dextrorotation in described liquid-crystal composition.
The invention also discloses above-mentioned a kind of electro-optical display with the liquid-crystal composition of high UV stability.
The further improvement of technical solution of the present invention is: described electro-optical display is IPS indicating meter, FFS indicating meter, TN indicating meter, STN indicating meter, OCB indicating meter.
Owing to have employed technique scheme, the technical progress that the present invention obtains is:
Liquid-crystal composition liquid crystal voltage conservation rate (VHR) after UV energy 10000MJ irradiates with high UV stability of the present invention still can not reduce, this liquid-crystal composition has the performance of fast response simultaneously, is applicable to high reliability and the liquid crystal display device that drives of the active matrix thin film transistor (AM-TFT) with positive dielectric anisotropy of response fast.
Embodiment
The invention discloses a kind of liquid-crystal composition with high UV stability, described liquid-crystal composition comprises the binder component A of the composition of compound shown in one or more general formulas S-1 and/or general formula S-2, also comprise the B component of the composition of compound shown in one or more general formulae IV, also comprise the component C of the composition of compound shown in one or more formula I, the component D of the composition of compound shown in one or more general formulas II, the component E of the composition of compound shown in one or more general formula III
Wherein,
R
1, R
2represent independently of one another carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms be any one in 3 ~ 5 cycloalkyl;
R
3, R
4, R
5represent independently of one another carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms be 3 ~ 5 cycloalkyl, carbonatoms be any one in the straight-chain alkenyl of 2 ~ 5;
R
6represent that carbonatoms is any one in the unbranched alkoxy of 1 ~ 5;
R
7represent that carbonatoms is any one in the straight chained alkyl of 1 ~ 5;
Ring A, ring B, ring C, ring D, ring E represent in phenyl ring, trans cvclohexvl basic ring independently of one another any one;
L
1, L
2, L
3, L
4, L
5, L
6, L
7, L
8, L
9, L
10represent in H, F independently of one another any one;
X
1represent F, OCF
3, carbonatoms is any one in the straight chained alkyl of 1 ~ 5;
N represents 0 or 1.
In liquid-crystal composition disclosed by the invention, the weight percentage that binder component A accounts for liquid-crystal composition is greater than 0.001%, shown in its formula of S-1, the weight percentage of compound is less than or equal to 0.3%, and shown in general formula S-2, the weight percentage of compound is less than or equal to 0.3%.
More preferably, the weight percentage that binder component A accounts for liquid-crystal composition is greater than 0.005%, and shown in its formula of V, the weight percentage of compound is less than or equal to 0.3%, and shown in general formula VI, the weight percentage of compound is less than or equal to 0.1%.
In liquid-crystal composition disclosed by the invention, the weight percentage of B component is 10 ~ 60%, the weight percentage of component C is 1 ~ 50%, the weight percentage of component D is 1 ~ 20%, the weight percentage of component E is 1 ~ 50%, and the weight percentage sum of described B component, component C, component D, component E is 100%.
More preferably, the weight percentage of B component is 15 ~ 50%, the weight percentage of component C is 15 ~ 40%, the weight percentage of component D is 4 ~ 20%, the weight percentage of component E is 30 ~ 50%, and the weight percentage sum of described B component, component C, component D, component E is 100%.
The whole compound of the present invention is by the preparation of self known method, and liquid-crystal composition is by the preparation of conventional method.Usually make it dissolve mutually each composition Hybrid Heating, complete until observe dissolution process.Also in suitable organic solvent, all the components can be dissolved, after mixing thoroughly except desolventizing, finally obtain homogeneous liquid-crystal composition.
Liquid crystal media of the present invention also can comprise the additive described in well known by persons skilled in the art and document further, makes it for any liquid-crystal display type disclosed so far.
The concrete meaning of the symbol in embodiment and test condition as follows:
VHR: voltage retention (%), test condition is 20 ± 2 DEG C and 60 ± 2 DEG C, voltage is ± 5V, pulse width is 10ms, voltage hold-time 16.7ms.Testing apparatus is TOYOModel6254 liquid crystal property comprehensive tester.When the contaminated degree of liquid crystal is higher, the ion wherein contained is more, and make liquid crystal more easy conductive, VHR is lower, therefore uses voltage retention to characterize liquid crystal pollution degree.By the initial VHR of comparative liquid crystal and after UV energy 10000MJ liquid crystal VHR characterize liquid crystal by the destruction situation of ultraviolet.After UV, VHR is lower, illustrates that liquid crystal destroys more serious by ultraviolet.
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 starting material all can obtain from open commercial sources if no special instructions, and the cyclohexyl in following monomeric compound structural formula is transconfiguration.
Embodiment 1
Embodiment 2
Embodiment 3
Embodiment 4
Embodiment 5
Comparative example 1 (D1)
The VHR data synopsis of embodiment 1 ~ 5 and comparative example 1
Embodiment 1 ~ 5 is only with the difference of comparative example 1 compound adding binder component E in embodiment 1, as can be seen from embodiment 1 ~ 5 and comparative example 1 relatively, the liquid-crystal composition of comparative example 1 is after UV10000mj, VHR significantly declines, and embodiment 1 ~ 5 is after UV10000mj, VHR is just slight to decline, and illustrates that the UV stability of embodiment 1 ~ 5 is significantly increased than comparative example 1.
Claims (11)
1. one kind has the liquid-crystal composition of high UV stability, it is characterized in that: described liquid-crystal composition comprises the binder component A of the composition of compound shown in one or more general formulas S-1 and/or general formula S-2, also comprise the B component of the composition of compound shown in one or more general formulae IV
Wherein,
R
4, R
5represent independently of one another carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms be 3 ~ 5 cycloalkyl, carbonatoms be any one in the straight-chain alkenyl of 2 ~ 5;
R
6represent that carbonatoms is any one in the unbranched alkoxy of 1 ~ 5;
R
7represent that carbonatoms is any one in the straight chained alkyl of 1 ~ 5.
2. a kind of liquid-crystal composition with high UV stability according to claim 1, it is characterized in that: described liquid-crystal composition also comprises the component C of the composition of compound shown in one or more formula I, the component D of the composition of compound shown in one or more general formulas II, the component E of the composition of compound shown in one or more general formula III
Wherein,
R
1, R
2represent independently of one another carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms be any one in 3 ~ 5 cycloalkyl;
R
3represent carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms be 3 ~ 5 cycloalkyl, carbonatoms be any one in the straight-chain alkenyl of 2 ~ 5;
Ring A, ring B, ring C, ring D, ring E represent in phenyl ring, trans cvclohexvl basic ring independently of one another any one;
L
1, L
2, L
3, L
4, L
5, L
6, L
7, L
8, L
9, L
10represent in H, F independently of one another any one;
X
1represent F, OCF
3, carbonatoms is any one in the straight chained alkyl of 1 ~ 5;
N represents 0 or 1.
3. a kind of liquid-crystal composition with high UV stability according to claim 1, it is characterized in that: in described liquid-crystal composition, the weight percentage that binder component A accounts for liquid-crystal composition is greater than 0.001%, shown in its formula of S-1, the weight percentage of compound is less than or equal to 0.3%, and shown in general formula S-2, the weight percentage of compound is less than or equal to 0.3%.
4. a kind of liquid-crystal composition with high UV stability according to claim 3, it is characterized in that: in described liquid-crystal composition, the weight percentage of B component is 10 ~ 60%, the weight percentage of component C is 1 ~ 50%, the weight percentage of component D is 1 ~ 20%, the weight percentage of component E is 1 ~ 50%, and the weight percentage sum of described B component, component C, component D, component E is 100%.
5. a kind of liquid-crystal composition with high UV stability according to any one of Claims 1 to 4, is characterized in that: compound shown in described general formulae IV is specially the compound shown in following general formulae IV-1 ~ IV-6,
6. a kind of liquid-crystal composition with high UV stability according to any one of Claims 1 to 4, is characterized in that: compound shown in described formula I is specially the compound shown in following formula I-1 ~ I-3,
Wherein,
R
1represent carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms be any one in 3 ~ 5 cycloalkyl.
7. a kind of liquid-crystal composition with high UV stability according to any one of Claims 1 to 4, is characterized in that: compound shown in described general formula II is specially the compound shown in following general formula II-1 ~ II-3,
Wherein,
R
2represent carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms be any one in 3 ~ 5 cycloalkyl.
8. a kind of liquid-crystal composition with high UV stability according to any one of Claims 1 to 4, is characterized in that: compound shown in described general formula III is specially the compound shown in following general formula III-1 ~ III-3,
Wherein,
R
3represent carbonatoms be 1 ~ 5 straight chained alkyl, carbonatoms be 3 ~ 5 cycloalkyl, carbonatoms be any one in the straight-chain alkenyl of 2 ~ 5;
L
8, L
9, L
10represent in H, F independently of one another any one;
X
1represent F, OCF
3, carbonatoms is any one in the straight chained alkyl of 1 ~ 5.
9. a kind of liquid-crystal composition with high UV stability according to any one of Claims 1 to 4, is characterized in that: also comprise chiral dopant that is left-handed or dextrorotation in described liquid-crystal composition.
10. one kind contains a kind of electro-optical display with the liquid-crystal composition of high UV stability according to any one of Claims 1 to 4.
11. electro-optical displays according to claim 10, is characterized in that: described electro-optical display is IPS indicating meter, FFS indicating meter, TN indicating meter, STN indicating meter, OCB indicating meter.
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CN101544894A (en) * | 2009-05-07 | 2009-09-30 | 石家庄永生华清液晶有限公司 | Liquid crystal composition |
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