CN104293357B - There is liquid-crystal composition and the display device thereof of high permeability - Google Patents
There is liquid-crystal composition and the display device thereof of high permeability Download PDFInfo
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Abstract
The invention provides the liquid-crystal composition of a kind of positive dielectric anisotropy, comprise: one or more selected from formula I, formula II, general formula III and combination thereof the compound of group as the first component；One or more are selected from general formulae IV, formula V, the compound of the group of formula VI and its combination is as second component, wherein, first component dielectric anisotropic is positivity, second component dielectric anisotropic is negativity, liquid-crystal composition is keeping the fast-response of positivity IPS liquid crystal, low driving voltage, higher clearing point, relatively low rotary viscosity, while the advantages such as suitable optical anisotropy and suitable dielectric anisotropy, also it is greatly enhanced the transmitance of liquid crystal display, IPS liquid crystalline phase ratio with existing positive dielectric anisotropic, transmitance can improve 5～20%.Present invention also offers the liquid-crystal composition of a kind of present invention of comprising and there is the liquid crystal display of IPS display pattern.
Description
Technical Field
The invention relates to a liquid crystal composition, in particular to a liquid crystal composition for electro-optical purposes and a liquid crystal display comprising the liquid crystal composition, in particular to an active matrix addressed display and an in-plane switching (IPS) type display comprising the liquid crystal composition.
Background
Liquid Crystal Displays (LCDs) have been rapidly developed due to their small size, light weight, low power consumption, and excellent display quality, and are widely used particularly in portable electronic information products. With the increase in the size of liquid crystal screens for portable computers, office applications, and video applications, there are several problems to be solved in order to enable the liquid crystal display to be used for a large screen display and eventually replace a Cathode Ray Tube (CRT) display. Such as improvement of viewing angle characteristics and improvement of response speed. The narrow viewing angle of the LCD means that the contrast ratio is significantly reduced when the LCD is observed away from the direction perpendicular to the normal of the liquid crystal cell, and for gray scale and color display, the phenomenon of gray scale and color inversion occurs when the viewing angle is large, which seriously affects the display quality of the LCD. The viewing angle problem becomes a big obstacle to the replacement of the CRT technology by the LCD.
The viewing angle problem of the LCD is determined by the operating principle of the liquid crystal itself. The liquid crystal molecules are rod-shaped, and different molecular alignment patterns correspond to different optical anisotropies. The smaller the included angle between incident light and liquid crystal molecules is, the smaller the birefringence is; conversely, the greater the birefringence. The included angles between the light rays entering the liquid crystal box at different angles from the normal direction of the display screen and the director of the liquid crystal molecules are different, so that the effective optical path difference delta n x d is different at different viewing angles. The optimal optical path difference of the liquid crystal box is designed according to the direction perpendicular to the normal line of the box, and for the light rays with oblique incidence, the minimum transmittance is increased along with the increase of the included angle, and the contrast ratio is reduced. When the angle is large enough, contrast inversion may even occur.
At present, many methods for solving the viewing angle problem have been proposed such as: optically Compensated Bend (OCB) mode, In-plane switching (IPS) mode, Fringe Field Switching (FFS) mode, and Multi-domain homeotropic alignment (MVA) mode.
They all have their own merits and demerits, and the multi-domain homeotropic alignment mode has high contrast and fast response, but it requires one biaxial compensation film and two elliptical polarizers and thus has high cost, the OCB mode is difficult to maintain stable control with ac voltage, the transmittance of R, G, B three kinds of monochromatic light is different, and in the absence of field, molecules in the liquid crystal cell are aligned in a direction parallel to the substrate, and in order to realize bend alignment, a voltage is applied to the cell for several seconds for presetting, and then the alignment can be maintained at a low voltage, which causes inconvenience in use. The in-plane switching mode requires only a linear polarizer and does not require a compensation film, but its response speed is too slow to display a fast moving picture. Since the IPS mode and the FFS mode are simple to manufacture and have a wide viewing angle, they are the most attractive approaches capable of improving viewing angle characteristics and realizing large-area display.
In the early 70 s of the last century, experimental studies have been carried out on the basic electro-optical characteristics of the IPS mode of nematic liquid crystals, both uniformly and twisted, characterized in that a pair of electrodes is made on the same substrate, while the other substrate has no electrode, and the arrangement of the liquid crystal molecules is controlled by a transverse electric field applied between the electrodes, so this mode can also be called transverse field mode. In the IPS mode, nematic liquid crystal molecules are uniformly arranged in parallel between two substrates, and two polarizing plates are orthogonally arranged. In the IPS mode, when no electric field is applied, incident light is blocked by two orthogonal polarizing plates to be in a dark state, and when an electric field is applied, liquid crystal molecules rotate to cause retardation, so that light leaks from the two orthogonal polarizing plates, and the display principle is as shown in fig. 1.
The IPS mode may use a positive liquid crystal whose transmittance saturation voltage is lower and response speed is faster than that of a negative liquid crystal, because the transmittance saturation voltage decreases with an increase in absolute value of Δ, but the negative liquid crystal has better transmittance than the positive liquid crystal. The reason is mainly due to the difference in rotation of the positive and negative liquid crystals under the electric field, as shown in fig. 2 below.
Patent CN101270287A applied by samsung electron at 2/20/2008 has disclosed a blending scheme of positive and negative liquid crystal, but only mentions that the positive component is added to the negative liquid crystal, and the liquid crystal is still negative as a whole. The patent application JP2002156619A of zhisuo corporation at 11/21/2000 has disclosed a positive and negative liquid crystal blending experimental scheme, and neither scheme has detailed the effect of increasing the transmittance of IPS liquid crystal display by doping a small amount of negative liquid crystal monomer into positive liquid crystal.
Disclosure of Invention
It is an object of the present invention to provide a liquid crystal composition for use in an IPS mode, said liquid crystal composition doping one or more negative liquid crystal monomers in an IPS liquid crystal of positive dielectric anisotropy, it has surprisingly been found that by such doping mode it is possible to increaseε∥ and ε⊥ of the liquid crystal while maintaining Δε unchanged, where △ε=ε∥-ε⊥, and △ε is the dielectric anisotropy, ε∥ is the dielectric constant in the direction parallel to the molecular axis, ε⊥ is the dielectric constant in the direction perpendicular to the molecular axis, a liquid crystal of Δ >0 is referred to as a positive liquid crystal, a liquid crystal of Δ <0 is referred to as a negative liquid crystal.
Transmittance (transmittance). alpha.. DELTA.. according to the IPS mode transmittance formula (". alpha." indicates an "inverse proportion" relationship). By doping the negative liquid crystal monomer into the IPS liquid crystal with positive dielectric anisotropy, the obtained liquid crystal composition can greatly improve the transmittance of liquid crystal display while keeping the advantages of quick response, low driving voltage, higher clearing point, lower rotary viscosity, proper optical anisotropy, proper dielectric anisotropy and the like of the positive IPS liquid crystal, and compared with the conventional IPS liquid crystal with positive dielectric anisotropy, the transmittance can be improved by 5-20%.
In order to solve the above problems, the present invention provides a liquid crystal composition of positive dielectric anisotropy, comprising:
one or more compounds selected from the group consisting of formula I, formula II, formula III and combinations thereof as a first component
One or more compounds selected from the group consisting of formula IV, formula V, formula VI and combinations thereof as a second component
Wherein,
R1、R2、R3、R4、R5、R6、R7、R8、R9and R10The same or different, each independently represents H, an alkyl or alkoxy group having 1 to 7 carbon atoms, a fluoroalkyl or fluoroalkoxy group having 1 to 7 carbon atoms, or an alkenyl or alkenyloxy group having 2 to 7 carbon atoms;
andare the same or different and are each independently selected from the group consisting of Anda group of (a);
Z1、Z2and Z3The same or different, each independently represents a single bond, -CH ═ CH-, -COO-, -OCO-, -CH2O-、-OCH2-、-OCF2-、-CF2O-、-（CH2）4-、-C2F4-、-CH2CF2-, -CF = CF-or-CH2CH2-；
L4And L9The same or different, each independently represents H, F, Cl, an alkyl group or an alkoxy group having 1 to 7 carbon atoms, a fluoroalkyl group having 1 to 5 carbon atoms, a fluoroalkoxy group having 1 to 5 carbon atoms, a fluoroalkenyl group having 2 to 5 carbon atoms or a fluoroalkenyloxy group having 2 to 5 carbon atoms;
L1、L2、L3、L5、L6、L7、L8and L10The same or different, each independently represents H or F;
L11、L12、L13、L14、L15、L16、L17and L18The same or different, each independently represents F, Cl, CN, CH3Or OCH3；
m, n, a, b, p, q, s and g are the same or different and each independently represents 0 or 1.
The liquid crystal composition with positive dielectric anisotropy is characterized in that the dielectric anisotropy of a first component consisting of compounds in the groups of a general formula I, a general formula II, a general formula III and a combination thereof is positive, and the dielectric anisotropy of a second component consisting of compounds in the groups of a general formula IV, a general formula V, a general formula VI and a combination thereof is negative.
In some embodiments of the present invention, the compound of formula i comprises 5 to 40% of the total weight of the liquid crystal composition, the compound of formula ii comprises 15 to 50% of the total weight of the liquid crystal composition, the compound of formula iii comprises 20 to 60% of the total weight of the liquid crystal composition, and the compound of the group of formula iv, formula v, formula vi, and combinations thereof comprises 0 to 40% of the total weight of the liquid crystal composition.
In some embodiments of the present invention, it is preferable that the compounds of the group of formula IV, formula V, formula VI and combinations thereof comprise 5 to 30% by weight of the total liquid crystal composition.
In some embodiments of the invention, the compound of formula i is preferably one or more of the group consisting of:
wherein,
R1represents H, an alkyl group or an alkoxy group having 1 to 5 carbon atoms, a fluoroalkyl group or a fluoroalkoxy group having 1 to 5 carbon atoms, or an alkenyl group or an alkenyloxy group having 2 to 5 carbon atoms.
In some embodiments of the invention, the compound of formula i is particularly preferably one or more of the group consisting of:
in some embodiments of the invention, the compound of formula ii is selected from one or more of the group consisting of:
wherein,
R2represents H, an alkyl group or an alkoxy group having 1 to 5 carbon atoms, a fluoroalkyl group or a fluoroalkoxy group having 1 to 5 carbon atoms, or an alkenyl group or an alkenyloxy group having 2 to 5 carbon atoms.
In some embodiments of the invention, the compound of formula ii is particularly preferably one or more of the group consisting of:
in some embodiments of the invention, the compound of formula iii is selected from one or more of the group consisting of:
wherein,
R3and R4The same or different, each independently represents H, an alkyl or alkoxy group having 1 to 5 carbon atoms, a fluoroalkyl or fluoroalkoxy group having 1 to 5 carbon atoms, or an alkenyl or alkenyloxy group having 2 to 5 carbon atoms.
In some embodiments of the invention, the compound of formula ii is particularly preferably one or more of the group consisting of:
in some embodiments of the invention, the compound of formula iv is selected from one or more of the group consisting of:
wherein,
R5and R6The same or different, each independently represents H, an alkyl or alkoxy group having 1 to 5 carbon atoms, a fluoroalkyl or fluoroalkoxy group having 1 to 5 carbon atoms, or an alkenyl or alkenyloxy group having 2 to 5 carbon atoms.
In some embodiments of the invention, the compound of formula iv is particularly preferably one or more of the group consisting of:
in some embodiments of the invention, the compound of formula v is selected from one or more of the group consisting of:
wherein,
R7and R8The same or different, each independently represents H, an alkyl or alkoxy group having 1 to 5 carbon atoms, a fluoroalkyl or fluoroalkyl group having 1 to 5 carbon atomsAlkoxy or alkenyl or alkenyloxy having 2 to 5 carbon atoms.
In some embodiments of the invention, the compound of formula v is particularly preferably one or more of the group consisting of:
in some embodiments of the invention, the compound of formula vi is selected from one or more of the group consisting of:
wherein,
R9and R10The same or different, each independently represents H, an alkyl or alkoxy group having 1 to 5 carbon atoms, a fluoroalkyl or fluoroalkoxy group having 1 to 5 carbon atoms, or an alkenyl or alkenyloxy group having 2 to 5 carbon atoms.
In some embodiments of the invention, the compound of formula vi is particularly preferably one or more of the group consisting of:
another aspect of the present invention provides a liquid crystal display having an IPS display mode, the liquid crystal display comprising the liquid crystal composition of the present invention.
Compared with the existing liquid crystal composition, the liquid crystal composition of the invention has beneficial technical effects that: the liquid crystal composition of the invention determines a liquid crystal medium comprising the liquid crystal composition through a combination experiment of the compounds and comparison with a control, can increase/and j of liquid crystal under the condition of keeping unchanged delta, greatly improves the transmittance of liquid crystal display, can improve the transmittance by 5-20% compared with the conventional IPS liquid crystal with positive dielectric anisotropy, and simultaneously keeps the quick response, low driving voltage, higher clearing point, lower rotational viscosity, proper optical anisotropy and proper dielectric anisotropy of positive IPS liquid crystal.
In the present invention, unless otherwise specified, the proportions are weight ratios, all temperatures are in degrees centigrade, and the thickness of the box selected for the response time data test is 7 μm.
Drawings
FIG. 1 is a schematic diagram showing power-on and power-off states of an IPS mode;
FIG. 2 is a schematic view showing the rotation of a liquid crystal composition having positive and negative dielectric anisotropy under an electric field.
Illustration of the drawings:
a is a schematic view of the rotation of a liquid crystal composition of positive dielectric anisotropy under an electric field.
B is a schematic diagram of the rotation of the liquid crystal composition with negative dielectric anisotropy under an electric field.
English translation:
substrate: substrate
Transmitance (a.u.): transmittance of light
Detailed Description
The invention will be illustrated below with reference to specific embodiments. It is to be noted that although the present invention has been described in detail hereinafter with reference to the general description and the specific embodiments, it is obvious that modifications or improvements can be made to the present invention, which will be apparent to those skilled in the art. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
For convenience of expression, in the following examples, the group structure of the liquid crystal composition is represented by the code listed in Table 1:
TABLE 1 radical structural code of liquid crystal compounds
Compounds of the following formula are exemplified:
the structural formula is represented by the code listed in Table 2, and can be expressed as: nCPUF, where n in the code represents the number of C atoms in the left alkyl group, e.g., n is "3", i.e., the alkyl group is-C3H7(ii) a C in the code represents cyclohexane;
the structural formula is represented by the code listed in Table 2, and can be expressed as: 3C1OWO2, wherein the alkyl is-C3H7(ii) a C in the code represents cyclohexane; w in the code represents 2, 3-difluoro-1, 4-phenylene; o in the code represents an oxygen substituent.
The abbreviated codes of the test items in the following examples are as follows:
cp (. degree. C.): clearing points (nematic-isotropic phase transition temperature)
Δ n: refractive index anisotropy (589 nm, 25 ℃ C.)
Δ: dielectric anisotropy (1 KHz, 25 ℃ C.)
T: dielectric constant in the direction perpendicular to the molecular axis (1 KHz, 25 ℃ C.)
γ 1: torsional viscosity (mPas at 25 ℃ C.)
The components used in the following examples can be synthesized by a known method or obtained commercially. These synthesis techniques are conventional, and the resulting liquid crystal compounds were tested to meet the standards for electronic compounds.
Liquid crystal compositions were prepared according to the compounding ratios of the liquid crystal compositions specified in the following examples. The liquid crystal composition is prepared according to the conventional method in the field, such as heating, ultrasonic wave, suspension and the like, and is mixed according to the specified proportion.
Tables 2 and 3 show the components and ratios of the liquid crystal composition of the comparative example and the results of the performance test conducted by filling the liquid crystal composition between two substrates of a liquid crystal display, so as to compare the performance with the liquid crystal composition of the present invention.
Comparative example 1
The liquid crystal composition of comparative example 1, which was filled between two substrates of a liquid crystal display and subjected to a performance test, was prepared according to the compounds and weight percentages listed in table 2, and the test data are shown in the following table:
TABLE 2 liquid crystal composition formulations and their test properties
Example 1
The liquid crystal composition of example 1 was prepared according to the following compounds and weight percentages listed in table 3, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 3 liquid crystal composition formula and its test performance
Example 2
The liquid crystal composition of example 2 was prepared according to the following compounds and weight percentages listed in table 4, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 4 liquid crystal composition formula and its test performance
Example 3
The liquid crystal composition of example 3 was prepared according to the following compounds and weight percentages listed in table 5, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 5 liquid crystal composition formulations and their test properties
Comparative example 2
The liquid crystal composition of comparative example 2, which was filled between two substrates of a liquid crystal display and subjected to a performance test, was prepared according to the compounds and weight percentages listed in table 6, and the test data are shown in the following table:
TABLE 6 liquid crystal composition formula and its test performance
Example 4
The liquid crystal composition of example 4 was prepared according to the following compounds and weight percentages listed in table 7, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 7 liquid crystal composition formulations and their test properties
Example 5
The liquid crystal composition of example 5 was prepared according to the following compounds and weight percentages listed in table 8, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 8 liquid crystal composition formulations and their test properties
Comparative example 1 is an in-vehicle IPS product, which has the advantages of high clear point and good reliability, but has a low transmittance. In the embodiments 1, 2 and 3, the negative monomer is doped to obtain three products with higher reverse tone/delta, and the products have higher transmittance in application.
Comparative example 2 is a commercially available IPS product for mobile phones, which has the advantages of large dielectric constant and high response speed, but has a low transmittance. In the embodiments 4 and 5, two products with higher reverse angle/delta are obtained by doping the negative monomer, and the product has higher transmittance in application.
As can be seen from the above comparative examples 1, 2,3, 4 and 5, the liquid crystal composition provided by the present invention significantly improves the transmittance of IPS liquid crystal, and has a high clearing point, a low rotational viscosity, a suitable optical anisotropy and a suitable dielectric anisotropy.
Claims (11)
1. A liquid crystal composition of positive dielectric anisotropy, comprising:
one or more compounds selected from the group consisting of formula I, formula II, formula III and combinations thereof as a first component
And
one or more compounds selected from the group consisting of formula IV, formula V, formula VI and combinations thereof as a second component;
wherein,
R1、R2、R3、R4、R5、R6、R7、R8、R9and R10The same or different, each independently represents H, an alkyl or alkoxy group having 1 to 7 carbon atoms, a fluoroalkyl or fluoroalkoxy group having 1 to 7 carbon atoms, or an alkenyl or alkenyloxy group having 2 to 7 carbon atoms;
are the same or different and are each independently selected from the group consisting of A group of (a);
Z1、Z2and Z3The same or different, each independently represents a single bond, -CH ═ CH-, -COO-, -OCO-, -CH2O-、-OCH2-、-OCF2-、-CF2O-、-(CH2)4-、-C2F4-、-CH2CF2-, -CF ═ CF-or-CH2CH2-；
L4And L9The same or different, each independently represent H, F, Cl, an alkyl or alkoxy group having 1 to 7 carbon atoms, a fluoroalkyl group having 1 to 5 carbon atoms, or a fluoroalkyl group having 1 to 5 carbon atomsA fluoroalkoxy group of (a), a fluoroalkenyl group having 2 to 5 carbon atoms, or a fluoroalkenyloxy group having 2 to 5 carbon atoms;
L1、L2、L3、L5、L6、L7、L8and L10The same or different, each independently represents H or F;
L11、L12、L13、L14、L15、L16、L17and L18The same or different, each independently represents F, Cl, CN, CH3Or OCH3；
m, n, a, b, p, q and s are the same or different and each independently represents 0 or 1, g represents 1,
the first component dielectric anisotropy composed of compounds of the group of formula I, formula II, formula III, and combinations thereof is positive and the second component dielectric anisotropy composed of compounds of the group of formula IV, formula V, formula VI, and combinations thereof is negative;
the compound of the general formula I accounts for 5-24% of the total weight of the liquid crystal composition, the compound of the general formula II accounts for 15-44.5% of the total weight of the liquid crystal composition, the compound of the general formula III accounts for 20-57% of the total weight of the liquid crystal composition, and the compound of the group of the general formula IV, the general formula V, the general formula VI and the combination thereof accounts for 5-15% of the total weight of the liquid crystal composition;
wherein the compound of formula II is selected from one or more of the group consisting of:
and
wherein,
R2represents H, an alkyl group or an alkoxy group having 1 to 5 carbon atoms, a fluoroalkyl group or a fluoroalkoxy group having 1 to 5 carbon atoms, or an alkenyl group or an alkenyloxy group having 2 to 5 carbon atoms.
2. The liquid crystal composition of positive dielectric anisotropy according to claim 1, characterized in that the compound of formula I is selected from one or more of the group consisting of:
and
wherein,
R1represents H, an alkyl group or an alkoxy group having 1 to 5 carbon atoms, a fluoroalkyl group or a fluoroalkoxy group having 1 to 5 carbon atoms, or an alkenyl group or an alkenyloxy group having 2 to 5 carbon atoms.
3. The liquid crystal composition of positive dielectric anisotropy according to claim 1, characterized in that the compound of formula III is selected from one or more of the group consisting of:
and
wherein,
R3and R4The same or different, each independently represents H, an alkyl or alkoxy group having 1 to 5 carbon atoms, a fluoroalkyl or fluoroalkoxy group having 1 to 5 carbon atoms, or an alkenyl or alkenyloxy group having 2 to 5 carbon atoms.
4. The liquid crystal composition of positive dielectric anisotropy according to claim 1, characterized in that the compound of formula IV is selected from one or more of the group consisting of:
and
wherein,
R5and R6The same or different, each independently represents H, an alkyl or alkoxy group having 1 to 5 carbon atoms, a fluoroalkyl or fluoroalkoxy group having 1 to 5 carbon atoms, or an alkenyl or alkenyloxy group having 2 to 5 carbon atoms.
5. The liquid crystal composition of positive dielectric anisotropy according to claim 1, wherein the compound of formula V is selected from the group consisting of
Wherein,
R7and R8The same or different, each independently represents H, an alkyl or alkoxy group having 1 to 5 carbon atoms, a fluoroalkyl or fluoroalkoxy group having 1 to 5 carbon atoms, or an alkenyl or alkenyloxy group having 2 to 5 carbon atoms.
6. The liquid crystal composition of positive dielectric anisotropy according to claim 1, characterized in that the compound of formula VI is selected from one or more of the group consisting of:
and
wherein,
R9and R10The same or different, each independently represents H, an alkyl or alkoxy group having 1 to 5 carbon atoms, a fluoroalkyl or fluoroalkoxy group having 1 to 5 carbon atoms, or an alkenyl or alkenyloxy group having 2 to 5 carbon atoms.
7. The liquid crystal composition of positive dielectric anisotropy according to any of claims 1 to 6, characterized in that the compound of general formula I is selected from one or more of the group consisting of:
and
and the compound of formula II is selected from one or more of the group consisting of:
and
and the compound of formula III is selected from one or more of the group consisting of:
and
and the compound of formula IV is selected from one or more of the group consisting of:
and
and said compound of formula v is selected from one or more of the group consisting of:
and
and the compound of formula VI is selected from one or more of the group consisting of:
and
8. the liquid crystal composition of positive dielectric anisotropy according to claim 7, characterized in that it comprises:
5% of compound III-6-2 by weight of the total liquid crystal composition;
compound II-9-2 accounting for 2 percent of the total weight of the liquid crystal composition;
compound II-2-2 accounting for 4 percent of the total weight of the liquid crystal composition;
compound IV-4-7 accounting for 10 percent of the total weight of the liquid crystal composition;
compound II-1-2 accounting for 3 percent of the total weight of the liquid crystal composition;
7% of compound II-1-3 by weight of the total liquid crystal composition;
compound III-3-2 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-3-2 accounting for 2 percent of the total weight of the liquid crystal composition;
compound III-7-1 accounting for 4 percent of the total weight of the liquid crystal composition;
11% by weight of compound III-3-3 based on the total weight of the liquid crystal composition;
compound III-1-1 accounting for 23 percent of the total weight of the liquid crystal composition;
compound III-3-4 accounting for 9 percent of the total weight of the liquid crystal composition;
compound I-1-3 accounting for 8 percent of the total weight of the liquid crystal composition; and
7 percent of compound I-4-2 based on the total weight of the liquid crystal composition,
or the liquid crystal composition of positive dielectric anisotropy comprises:
compound III-6-2 accounting for 4 percent of the total weight of the liquid crystal composition;
compound II-9-2 accounting for 2 percent of the total weight of the liquid crystal composition;
compound II-2-2 accounting for 4 percent of the total weight of the liquid crystal composition;
compound V-4-5 accounting for 15 percent of the total weight of the liquid crystal composition;
compound II-1-2 accounting for 9 percent of the total weight of the liquid crystal composition;
7% of compound II-1-3 by weight of the total liquid crystal composition;
3% of compound III-3-2 by weight of the total liquid crystal composition;
compound II-3-2 accounting for 5 percent of the total weight of the liquid crystal composition;
compound III-7-1 accounting for 2 percent of the total weight of the liquid crystal composition;
11% by weight of compound III-3-3 based on the total weight of the liquid crystal composition;
compound III-1-1 in an amount of 18% by weight based on the total weight of the liquid crystal composition;
compound III-3-4 accounting for 9 percent of the total weight of the liquid crystal composition;
compound I-1-3 accounting for 6 percent of the total weight of the liquid crystal composition; and
compound I-4-2 accounting for 5 percent of the total weight of the liquid crystal composition,
or the liquid crystal composition of positive dielectric anisotropy comprises:
compound III-5-2 accounting for 4 percent of the total weight of the liquid crystal composition;
compound III-6-2 accounting for 4 percent of the total weight of the liquid crystal composition;
compound II-9-2 accounting for 2 percent of the total weight of the liquid crystal composition;
compound II-2-2 accounting for 2 percent of the total weight of the liquid crystal composition;
compound II-1-2 accounting for 8.5 percent of the total weight of the liquid crystal composition;
compound II-1-3 accounting for 8 percent of the total weight of the liquid crystal composition;
compound III-3-2 accounting for 4 percent of the total weight of the liquid crystal composition;
compound II-3-2 accounting for 5 percent of the total weight of the liquid crystal composition;
compound VI-5-3 in an amount of 10% by weight based on the total weight of the liquid crystal composition;
7% by weight of compound III-3-3 based on the total weight of the liquid crystal composition;
24.5 percent of compound III-1-1 based on the total weight of the liquid crystal composition;
compound III-3-4 accounting for 10 percent of the total weight of the liquid crystal composition;
compound I-1-3 accounting for 9 percent of the total weight of the liquid crystal composition; and 2 percent of compound I-4-2 accounting for the total weight of the liquid crystal composition,
or the liquid crystal composition of positive dielectric anisotropy comprises:
compound IV-4-7 accounting for 10 percent of the total weight of the liquid crystal composition;
compound IV-4-2 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-1-2 accounting for 3 percent of the total weight of the liquid crystal composition;
compound II-5-2 accounting for 2 percent of the total weight of the liquid crystal composition;
compound II-11-1 accounting for 6 percent of the total weight of the liquid crystal composition;
compound II-11-2 accounting for 3 percent of the total weight of the liquid crystal composition;
compound II-3-1 accounting for 6 percent of the total weight of the liquid crystal composition;
compound II-3-2 accounting for 7 percent of the total weight of the liquid crystal composition;
compound III-3-3 accounting for 4.5 percent of the total weight of the liquid crystal composition;
24.5 percent of compound III-1-1 based on the total weight of the liquid crystal composition;
5% of compound III-1-2 by weight of the total liquid crystal composition;
compound I-1-3 accounting for 8 percent of the total weight of the liquid crystal composition;
compound I-4-2 accounting for 8 percent of the total weight of the liquid crystal composition; and
compound I-4-3 accounting for 8 percent of the total weight of the liquid crystal composition,
or the liquid crystal composition of positive dielectric anisotropy comprises:
compound V-4-5 accounting for 10 percent of the total weight of the liquid crystal composition;
5 percent of compound V-4-6 in the total weight of the liquid crystal composition;
compound II-1-2 accounting for 9 percent of the total weight of the liquid crystal composition;
7.5 percent of compound II-1-3 based on the total weight of the liquid crystal composition;
compound II-1-5 accounting for 4 percent of the total weight of the liquid crystal composition;
compound II-5-2 accounting for 2 percent of the total weight of the liquid crystal composition;
compound II-5-1 accounting for 2 percent of the total weight of the liquid crystal composition;
compound II-11-1 accounting for 6 percent of the total weight of the liquid crystal composition;
compound II-11-2 accounting for 4 percent of the total weight of the liquid crystal composition;
compound II-3-2 accounting for 10 percent of the total weight of the liquid crystal composition;
compound III-3-3 accounting for 2 percent of the total weight of the liquid crystal composition;
compound III-1-1 accounting for 20.5 percent of the total weight of the liquid crystal composition;
3% of compound III-1-2 by weight of the total liquid crystal composition;
compound I-1-3 accounting for 8 percent of the total weight of the liquid crystal composition;
compound I-4-2 accounting for 3 percent of the total weight of the liquid crystal composition; and
compound I-4-3 in an amount of 4% by weight based on the total weight of the liquid crystal composition.
9. A liquid crystal display having an IPS display mode comprising the liquid crystal composition of any one of claims 1 to 6.
10. A liquid crystal display having an IPS display mode comprising the liquid crystal composition of claim 7.
11. A liquid crystal display having an IPS display mode comprising the liquid crystal composition of claim 8.
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| PCT/CN2014/081814 WO2015007173A1 (en) | 2013-07-16 | 2014-07-08 | Liquid crystal composition with high transmittance and display device thereof |
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| TW201504405A (en) | 2015-02-01 |
| TWI554597B (en) | 2016-10-21 |
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