Liquid crystal composition, and liquid crystal display element and liquid crystal display

Abstract

A liquid crystal composition, and a liquid crystal display element or liquid crystal display comprising the liquid crystal composition, and belongs to the field of liquid crystal display. The liquid crystal composition comprises a compound represented by formula I, a compound represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound. The liquid crystal composition has a higher clearing point (CP), a large K value, a suitable optical anisotropy (Δn), and a fast response speed. ##STR00001##

Claims

1. A liquid crystal composition, wherein said liquid crystal composition comprises a compound represented by formula I, a compound represented by formula II, one or more compounds represented by formula III, a compound represented by formula IV-7 and a compound represented by formula IV-8, and at least one polymerizable compound, ##STR00037## ##STR00038## R.sub.1 represents an alkoxy group having a carbon atom number of 2, and R.sub.2 represents an alkoxy group having a carbon atom number of 2 or 4; R.sub.31 represents an alkyl group having a carbon atom number of 3; R.sub.41 represents an alkoxy group having a carbon atom number of 2; a total mass content of the compound represented by formula I is 15%; a total mass content of the compound represented by formula II is 8%; a total mass content of the compound represented by formula III is 11%; the polymerizable compound above is added in an amount of 0.03%-0.2% on a basis of the total mass % of the liquid crystal; a total mass content of the compound represented by formula IV-7 is 9%; and a total mass content of the compound represented by formula IV-8 is 2%.

2. The liquid crystal composition according to claim 1, wherein said liquid crystal composition further comprises one or more compounds represented by formula V-3: ##STR00039## wherein, R.sub.5 and R.sub.6 represent an alkyl group having a carbon atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, a fluorine-substituted alkoxy group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10 or a fluorine-substituted alkenyl group having a carbon atom number of 2-10.

3. The liquid crystal composition according to claim 1, wherein said liquid crystal composition further comprises one or more compounds represented by formula VI-1: ##STR00040## wherein, R.sub.7 represents an alkyl group having a carbon atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, a fluorine-substituted alkoxy group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10 or a fluorine-substituted alkenyl group having a carbon atom number of 2-10; and R.sub.8 represents an alkyl group having a carbon atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10 or a fluorine-substituted alkoxy group having a carbon atom number of 1-10.

4. The liquid crystal composition according to claim 1, wherein said liquid crystal composition further comprises one or more compounds represented by formula VII: ##STR00041## wherein in formula VII, R.sub.9 represents an alkyl group having a carbon atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10 or a fluorine-substituted alkoxy group having a carbon atom number of 1-10, and any one or more unconnected CH.sub.2 in the groups represented by R.sub.9 are optionally substituted with cyclopentyl, cyclobutyl or cyclopropyl; R.sub.10 represents an alkyl group having an atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10 or a fluorine-substituted alkoxy group having a carbon atom number of 1-10; and X represents O or S.

5. The liquid crystal composition according to claim 4, wherein said one or more compounds represented by formula VII are selected from the group consisting of compounds represented by formulas VII-1 to VII-12: ##STR00042## ##STR00043## wherein R.sub.91 and R.sub.101 each independently represent an alkyl group having a carbon atom number of 1-10.

6. A liquid crystal display element or liquid crystal display, comprising the liquid crystal composition of claim 1, wherein said liquid crystal display element or liquid crystal display is an active matrix addressing display element or display, or a passive matrix addressing display element or display.

Description

DETAILED DESCRIPTION OF EMBODIMENTS

(1) [Liquid Crystal Composition]

(2) The liquid crystal composition of the present disclosure comprises a compound represented by formula I, a compound represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound.

(3) ##STR00003##

(4) wherein:

(5) R.sub.1 and R.sub.2 each independently represent an alkoxy group having a carbon atom number of 1-10.

(6) As the alkoxy group having a carbon atom number of 1-10, examples include methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, pentyloxy, hexyloxy, heptyloxy, octyloxy, nonyloxy, decyloxy etc.

(7) In the liquid crystal composition of the present disclosure, the above-mentioned polymerizable compound is preferably selected from formulas RM-1 to RM-8

(8) ##STR00004## ##STR00005##

(9) The liquid crystal composition of the present disclosure preferably further comprises one or more compounds represented by formula IV:

(10) ##STR00006##

(11) wherein:

(12) R.sub.3 and R.sub.4 represent an alkyl group having a carbon atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, a fluorine-substituted alkoxy group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10, a fluorine-substituted alkenyl group having a carbon atom number of 2-10, an alkenoxy group having a carbon atom number of 3-8 or an fluorine-substituted alkenoxy group having a carbon atom number of 3-8, and any one or more unconnected CH.sub.2 in the groups represented by R.sub.3 and R.sub.4 are optionally substituted with cyclopentyl, cyclobutyl or cyclopropyl;

(13) Z.sub.1 and Z.sub.2 each independently represent a single bond, —CH.sub.2CH.sub.2— or —CH.sub.2O—;

(14) ##STR00007##
represent 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene or a fluorinated 1,4-phenylene; and

(15) m and n each independently represent 0, 1 or 2, with m+n≤2;

(16) furthermore, where m+n=1, Z.sub.1 and Z.sub.2 are single bonds, and

(17) ##STR00008##
represent 1,4-phenylene, R.sub.3 and R.sub.4 do not simultaneously represent an alkoxy group having a carbon atom number of 1-10.

(18) In the liquid crystal composition of the present disclosure, preferably, the compound represented by formula IV mentioned above is selected from the group consisting of compounds represented by formula IV-1 to IV-14 below:

(19) ##STR00009## ##STR00010##

(20) wherein:

(21) R.sub.31 represents an alkyl group having a carbon atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10, a fluorine-substituted alkenyl group having a carbon atom number of 2-10, an alkenoxy group having a carbon atom number of 3-8 or an fluorine-substituted alkenoxy group having a carbon atom number of 3-8; R.sub.41 represents an alkyl group having a carbon atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, a fluorine-substituted alkoxy group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10, a fluorine-substituted alkenyl group having a carbon atom number of 2-10 or an alkenoxy group having a carbon atom number of 3-8; and and any one or more unconnected CH.sub.2 in the groups represented by R.sub.31 and R.sub.41 are optionally substituted with cyclopentyl, cyclobutyl or cyclopropyl.

(22) In the liquid crystal composition of the present disclosure, preferably, where the total of the components other than the polymerizable compound is 100% by mass, the total mass content of the compound represented by formula I above is 1%-65%; the total mass content of the compound represented by formula II above is 1%-20%; the total mass content of the compound represented by formula III above is 1%-25%; the polymerizable compound above is added in an amount of 0.01%-1%, preferably 0.03%-0.2% on the basis of the total mass % of the liquid crystal; and the total mass content of the compound represented by formula IV above is 0-50%.

(23) The liquid crystal composition of the present disclosure preferably further comprises one or more compounds represented by formula V:

(24) ##STR00011##

(25) wherein,

(26) R.sub.5 and R.sub.6 represent an alkyl group having a carbon atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, a fluorine-substituted alkoxy group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10 or a fluorine-substituted alkenyl group having a carbon atom number of 2-10; and

(27) ##STR00012##
each independently represent 1,4-cyclohexylene, 1,4-cyclohexenylene or 1,4-phenylene; furthermore, where

(28) ##STR00013##
simultaneously represent 1,4-cyclohexylene, and where one of R.sub.5 or R.sub.6 represents propyl, the other does not represent vinyl.

(29) In the liquid crystal composition of the present disclosure, preferably, the compound represented by formula V mentioned above is selected from the group consisting of compounds represented by formula V-1 to V-3 below:

(30) ##STR00014##

(31) wherein

(32) R.sub.5 and R.sub.6 represent an alkyl group having a carbon atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, a fluorine-substituted alkoxy group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10 or a fluorine-substituted alkenyl group having a carbon atom number of 2-10; and in formula V-1, where one of R.sub.5 and R.sub.6 represents propyl, the other does not represent vinyl.

(33) The liquid crystal composition of the present disclosure preferably further comprises one or more compounds represented by formula VI:

(34) ##STR00015##

(35) wherein,

(36) R.sub.7 represents an alkyl group having a carbon atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, a fluorine-substituted alkoxy group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10 or a fluorine-substituted alkenyl group having a carbon atom number of 2-10; R.sub.8 represents an alkyl group having a carbon atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10 or a fluorine-substituted alkoxy group having a carbon atom number of 1-10; and

(37) ##STR00016##
each independently represent 1,4-cyclohexylene, 1,4-cyclohexenylene or 1,4-phenylene.

(38) In the liquid crystal composition of the present disclosure, preferably, the compound represented by formula VI mentioned above is selected from the group consisting of compounds represented by formula VI-1 to VI-3 below:

(39) ##STR00017##

(40) wherein,

(41) R.sub.7 represents an alkyl group having a carbon atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, a fluorine-substituted alkoxy group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10 or a fluorine-substituted alkenyl group having a carbon atom number of 2-10; and R.sub.8 represents an alkyl group having a carbon atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10 or a fluorine-substituted alkoxy group having a carbon atom number of 1-10.

(42) The liquid crystal composition of the present disclosure preferably further comprises one or more compounds represented by formula VII:

(43) wherein

(44) ##STR00018##

(45) R.sub.9 represents an alkyl group having a carbon atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10 or a fluorine-substituted alkoxy group having a carbon atom number of 1-10, and any one or more unconnected CH.sub.2 in these groups are optionally substituted with cyclopentyl, cyclobutyl or cyclopropyl;

(46) R.sub.10 represents an alkyl group having an atom number of 1-10, a fluorine-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10 or a fluorine-substituted alkoxy group having a carbon atom number of 1-10; and

(47) X represents O or S.

(48) In the liquid crystal composition of the present disclosure, preferably, the compound represented by formula VII mentioned above is selected from the group consisting of compounds represented by formula VII-1 to VII-12 below:

(49) ##STR00019## ##STR00020##

(50) wherein R.sub.91 and R.sub.101 represent an alkyl group having a carbon atom number of 1-10.

(51) [Liquid Crystal Display Element or Liquid Crystal Display]

(52) The present disclosure further relates to a liquid crystal display element or liquid crystal display comprising any liquid crystal composition mentioned above; and said display element or display is an active matrix display element or display or a passive matrix display element or display.

(53) Optionally, said liquid crystal display element or liquid crystal display is preferably an active matrix liquid crystal display element or liquid crystal display.

(54) Optionally, said active matrix display element or display is a PSVA-TFT liquid crystal display element or display.

(55) A liquid crystal display element or liquid crystal display comprising the above-mentioned compound or liquid crystal composition has a wider nematic phase temperature range, a faster response speed, and a lower cell thickness.

Example

(56) In order to more clearly illustrate the present disclosure, the present disclosure is further described below in conjunction with preferred examples. A person skilled in the art should understand that the content described in detail below is illustrative rather than limiting, and should not limit the scope of protection of the present disclosure.

(57) In this description, unless otherwise specified, percentages are mass percentages, temperatures are in degree Celsius (° C.), and the specific meanings of the other symbols and the test conditions are as follows:

(58) Cp represents the clearing point (° C.) of a liquid crystal, as measured by means of a DSC quantitative method;

(59) Δn represents optical anisotropy, n.sub.o is the refractive index of an ordinary light, n.sub.e is the refractive index of an extraordinary light, with the test conditions being: 25±2° C., 589 nm and using an abbe refractometer for testing;

(60) Δε represents dielectric anisotropy, Δε=ε.sub.//−ε.sub.⊥, wherein ε.sub.// is a dielectric constant parallel to a molecular axis, and ε.sub.⊥ is a dielectric constant perpendicular to the molecular axis, with the test conditions being 25±0.5° C., a 20 μm parallel cell, and INSTEC:ALCT-IR1 for testing;

(61) γ1 represents rotary viscosity (mPa.Math.s), with the test conditions being 25±0.5° C., a 20 μm parallel cell, and INSTEC:ALCT-IR1 for testing; and

(62) K11 is twist elastic constant, and K33 is splay elastic constant, with the test conditions being: 25° C., INSTEC:ALCT-IR1, and 18 μm vertical cell;

(63) A method for preparing the liquid crystal composition involves: weighing various liquid crystal monomers at a certain ratio and then placing them in a stainless steel beaker; placing the stainless steel beaker containing these liquid crystal monomers on a magnetic stirring instrument for heating and melting; and after the liquid crystal monomers in the stainless steel beaker are mostly melted, adding a magnetic rotor to the stainless steel beaker; uniformly stirring the mixture; and cooling the mixture to room temperature to obtain the liquid crystal composition.

(64) In the examples of the present disclosure, liquid crystal monomer structures are represented by codes, wherein the codes of cyclic structures, end groups and linking groups of liquid crystals are represented as follows in tables 1 and 2.

(65) TABLE-US-00001 TABLE 1 Corresponding code for ring structure Ring structure Corresponding code C P L Y Sb Sc

(66) TABLE-US-00002 TABLE 2 Corresponding code for end group and linking group End group and linking group Corresponding code C.sub.nH.sub.2n+1— n- C.sub.nH.sub.2n+1O— nO— —CF.sub.3 -T —OCF.sub.3 -OT —CH.sub.2O— —O— —F —F —CH.sub.2CH.sub.2— -E- —CH═CH— —V— —CH═CH—C.sub.nH.sub.2n+1 Vn— Cp- Cpr- Cpr1-

EXAMPLES

(67) ##STR00030##
the code of which is CC-Cp-V1;

(68) ##STR00031##
the code of which is CPY-2-O2;

(69) ##STR00032##
the code of which is CCY-3-O2;

(70) ##STR00033##
the code of which is COY-3-O2;

(71) ##STR00034##
the code of which is CCOY-3-O2;

(72) ##STR00035##
the code of which is Sb-Cp1O-O4; and

(73) ##STR00036##
the code of which is Sc-Cp1O-O4.

Example 1

(74) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 3 below.

(75) TABLE-US-00003 TABLE 3 Formulation of the liquid crystal composition of Example 1 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 60 II CPP-3-2V1 15 III PY-2O-O2 10 III PY-2O-O4 10 III PY-1O-O4 5 RM-1 0.3 Δε [1 KHz, 25° C.]: −1.6 Δn [589 nm, 25° C.]: 0.098 Cp: 65° C. γ.sub.1: 46 mPa .Math. s K33: 14.6

Comparative Example 1

(76) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 4 below.

(77) TABLE-US-00004 TABLE 4 Formulation of the liquid crystal composition of Comparative Example 1 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) CC-5-V 60 II CPP-3-2V1 15 III PY-2O-O2 10 III PY-2O-O4 10 III PY-1O-O4 5 RM-1 0.3 Δε [1 KHz, 25° C.]: −1.8 Δn [589 nm, 25° C.]: 0.100 Cp: 67° C. γ.sub.1: 71 mPa .Math. s K33: 15.2

(78) CC-3-V in Example 1 is replaced by CC-5-V to form Comparative Example 1. By comparing Example 1 with Comparative Example 1, Comparative Example 1 has crystal precipitation at normal temperature; furthermore, the rotary viscosity is increased, and K33 is slightly increased; however, γ1/K33 is increased, and the response become slow. It can be seen therefrom that the liquid crystal composition of the present disclosure has the characteristics of a suitable optical anisotropy, a good low-temperature mutual solubility, and a fast response speed.

Comparative Example 2

(79) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 5 below.

(80) TABLE-US-00005 TABLE 5 Formulation of the liquid crystal composition of Comparative Example 2 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 60 CPP-3-2 15 III PY-2O-O2 10 III PY-2O-O4 10 III PY-1O-O4 5 RM-1 0.3 Δε [1 KHz, 25° C.]: −1.7 Δn [589 nm, 25° C.]: 0.094 Cp: 58° C. γ.sub.1: 43 mPa .Math. s K33: 12.6

(81) CPP-3-2V1 in Example 1 is replaced by CPP-3-2 to form Comparative Example 2. By comparing Example 1 with Comparative Example 2, Comparative Example 2 has a reduced refractive index, a reduced clearing point, and a reduced K value. It can be seen therefrom that the liquid crystal composition of the present disclosure has the characteristics of a suitable optical anisotropy and a wider temperature display range.

Comparative Example 3

(82) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 6 below.

(83) TABLE-US-00006 TABLE 6 Formulation of the liquid crystal composition of Comparative Example 3 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 60 II CPP-3-2V1 15 III PY-3-O2 16 III PY-5-O4 9 RM-1 0.3 Δε [1 KHz, 25° C.]: −1.3 Δn [589 nm, 25° C.]: 0.092 Cp: 56° C. γ.sub.1: 43 mPa .Math. s K33: 10.7

(84) PY-2O-O4, PY-2O-O2 and PY-1O-O4 in Example 1 are replaced by PY-3-O2 and PY-5-O2 to form Comparative Example 3. By comparing Example 1 with Comparative Example 3, Comparative Example 3 has a reduced dielectricity, a reduced refractive index and a reduced clearing point. It can be seen therefrom that the liquid crystal composition of the present invention has the characteristics of a suitable dielectric anisotropy and optical anisotropy and a wider temperature display range.

Example 2

(85) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 7 below.

(86) TABLE-US-00007 TABLE 7 Formulation of the liquid crystal composition of Example 2 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 25 II CPP-3-2V1 15 III PY-2O-O2 5 III PY-2O-O4 10 IV CY-3-O2 10 IV CY-3-O4 4 IV CCY-2-O2 10 IV CCY-3-O2 10 IV CPY-3-O2 11 RM-1 0.02 Δε [1 KHz, 25° C.]: −3.6 Δn [589 nm, 25° C.]: 0.119 Cp: 94° C. γ.sub.1: 128 mPa .Math. s K33: 18.4

Example 3

(87) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 8 below.

(88) TABLE-US-00008 TABLE 8 Formulation of the liquid crystal composition of Example 3 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 19 II CPP-3-2V1 10 III PY-2O-O2 5 IV CY-3-O2 17 IV CCY-2-O2 10 IV CCY-3-O2 11 IV CCY-5-O3 7 IV CPY-3-O2 12 IV CCOY-3-O2 9 RM-3 0.55 Δε [1 KHz, 25° C.]: −4.4 Δn [589 nm, 25° C.]: 0.112 Cp: 105° C. γ.sub.1: 194 mPa .Math. s K33: 20.4

Example 4

(89) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 9 below.

(90) TABLE-US-00009 TABLE 9 Formulation of the liquid crystal composition of Example 4 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 3 II CPP-3-2V1 9 III PY-2O-O2 5 III PY-2O-O4 7 IV CY-3-O2 17 IV CCY-2-O2 9 IV COY-3-O2 14 IV COY-3-O1 10 V CC-2-3 9 V CC-4-3 9 V PP-5-1 7 V CP-3-O2 1 RM-3 0.31 Δε [1 KHz, 25° C.]: −4.2 Δn [589 nm, 25° C.]: 0.094 Cp: 40° C. γ.sub.1: 61 mPa .Math. s K33: 8.4

Example 5

(91) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 10 below.

(92) TABLE-US-00010 TABLE 10 Formulation of the liquid crystal composition of Example 5 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 25 II CPP-3-2V1 5 III PY-2O-O2 3 III PY-2O-O4 5 IV PY-3-O2 9 IV CCOY-3-O2 13 IV CY-3-O2 17 V CC-2-3 15 VI CCP-3-O1 3 VI CCP-V-1 5 RM-3 0.9 Δε [1 KHz, 25° C.]: −3.2 Δn [589 nm, 25° C.]: 0.085 Cp: 59° C. γ.sub.1: 66 mPa .Math. s K33: 12.2

Example 6

(93) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 11 below.

(94) TABLE-US-00011 TABLE 11 Formulation of the liquid crystal composition of Example 6 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 13 II CPP-3-2V1 5 III PY-2O-O2 5 IV COY-3-O2 15 IV CPY-3-O2 11 IV PY-3-O2 3 V CC-2-3 15 V CC-5-3 5 VI CCP-V2-1 7 VI CPP-3-2 3 VII Sb-CP1O-O4 7 VII Sc-CP1O-O4 11 RM-1 0.09 Δε [1 KHz, 25° C.]: −4.3 Δn [589 nm, 25° C.]: 0.108 Cp: 68° C. γ.sub.1: 94 mPa .Math. s K33: 12.3

Example 7

(95) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 12 below.

(96) TABLE-US-00012 TABLE 12 Formulation of the liquid crystal composition of Example 7 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 15 II CPP-3-2V1 8 III PY-2O-O2 7 III PY-2O-O4 4 IV PY-3-O2 16 IV COY-3-O2 9 IV CCY-3-O2 10 IV CCOY-3-O2 2 V CC-4-3 6.5 V CC-5-3 8 V PP-5-1 2.5 VI CCP-V2-1 12 RM-2 0.30 Δε [1 KHz, 25° C.]: −3.0 Δn [589 nm, 25° C.]: 0.107 Cp: 75° C. γ.sub.1: 74 mPa .Math. s K33: 14.8

Example 8

(97) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 13 below.

(98) TABLE-US-00013 TABLE 13 Formulation of the liquid crystal composition of Example 8 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 29.5 II CPP-3-2V1 6 III PY-2O-O2 5 IV PY-3-O2 15 IV CCY-3-O2 9 IV CCOY-3-O2 13 V CC-3-V1 9.5 VI CPP-3-2 8 VII Sb-Cp1O-O4 5 RM-5 0.43 Δε [1 KHz, 25° C.]: −3.3 Δn [589 nm, 25° C.]: 0.107 Cp: 81° C. γ.sub.1: 94 mPa .Math. s K33: 16

Example 9

(99) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 14 below.

(100) TABLE-US-00014 TABLE 14 Formulation of the liquid crystal composition of Example 9 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 15 II CPP-3-2V1 8 III PY-2O-O2 7 III PY-2O-O4 5 IV PY-3-O2 15 IV CCY-3-O2 10 IV CCOY-3-O2 2.5 IV COY-3-O2 9 V CC-2-3 7.5 V CC-5-3 8 V PP-5-O2 1 VI CCP-3-O1 2 VI CCP-V2-1 10 RM-4 0.40 Δε [1 KHz, 25° C.]: −3.2 Δn [589 nm, 25° C.]: 0.105 Cp: 76° C. γ.sub.1: 79 mPa .Math. s K33: 15.1

Comparative Example 4

(101) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 15 below.

(102) TABLE-US-00015 TABLE 15 Formulation of the liquid crystal composition of Comparative Example 4 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 15 CPP-3-2 8 III PY-2O-O2 7 III PY-2O-O4 5 IV PY-3-O2 15 IV CCY-3-O2 10 IV CCOY-3-O2 2.5 IV COY-3-O2 9 V CC-2-3 7.5 V CC-5-3 8 V PP-5-O2 1 VI CCP-3-O1 2 VI CCP-V2-1 10 RM-4 0.40 Δε [1 KHz, 25° C.]: −3.2 Δn [589 nm, 25° C.]: 0.103 Cp: 72° C. γ.sub.1: 77 mPa .Math. s K33: 14.0

(103) CPP-3-2V1 in Example 9 is replaced by CPP-3-2 to form Comparative Example 4. Compared with Example 9, Comparative Example 4 has a reduced refractive index, a reduced clearing point, a narrowed liquid crystal use temperature, an increased γ1/K33, and a slowed response. It can be seen therefrom that the liquid crystal composition of the present disclosure has the characteristics of a large refractive index, a wide display temperature and a fast response.

Example 10

(104) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 16 below.

(105) TABLE-US-00016 TABLE 16 Formulation of the liquid crystal composition of Example 10 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 10 II CPP-3-2V1 4 III PY-2O-O2 5 IV COY-3-O2 14 IV PY-3-O2 14.5 IV LY-Cp-O2 2 V CC-4-3 8 V CC-5-3 8 V CP-3-O2 1.5 VI CCP-V-1 4 VI CPP-3-2 5 VI CCP-3-O1 5 VI CCP-V2-1 13 VII Sc-2O-O4 6 RM-2 0.98 Δε [1 KHz, 25° C.]: −2.8 Δn [589 nm, 25° C.]: 0.105 Cp: 75° C. γ.sub.1: 70 mPa .Math. s K33: 13.7

Comparative Example 5

(106) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 17 below.

(107) TABLE-US-00017 TABLE 17 Formulation of the liquid crystal composition of Comparative Example 5 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) CC-5-V 10 II CPP-3-2V1 4 III PY-2O-O2 5 IV COY-3-O2 14 IV PY-3-O2 14.5 IV LY-Cp-O2 2 V CC-4-3 8 V CC-5-3 8 V CP-3-O2 1.5 VI CCP-V-1 4 VI CPP-3-2 5 VI CCP-3-O1 5 VI CCP-V2-1 13 VII Sc-2O-O4 6 RM-2 0.98 Δε [1 KHz, 25° C.]: −2.8 Δn [589 nm, 25° C.]: 0.105 Cp: 76° C. γ.sub.1: 76 mPa .Math. s K33: 13.8

(108) CC-3-V in Example 10 is replaced by CC-5-V to form Comparative Example 5. Compared with Example 10, Comparative Example 5 differs to a smaller extent in the properties of dielectricity, refractive index and clearing point, but has an increased γ1/K33 and a slowed response. It can be seen therefrom that the liquid crystal composition of the present disclosure has the characteristic of a fast response.

Example 11

(109) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 18 below.

(110) TABLE-US-00018 TABLE 18 Formulation of the liquid crystal composition of Example 11 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 35 II CPP-3-2V1 11 III PY-2O-O2 10 III PY-2O-O4 11 V CC-2-3 15.5 V CC-4-3 8 V CC-5-3 8 V CP-3-O2 1.5 RM-1 0.17 Δε [1 KHz, 25° C.]: −1.4 Δn [589 nm, 25° C.]: 0.085 Cp: 61° C. γ.sub.1: 43 mPa .Math. s K33: 12.9

Example 12

(111) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 19 below.

(112) TABLE-US-00019 TABLE 19 Formulation of the liquid crystal composition of Example 12 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 29 II CPP-3-2V1 7 III PY-2O-O2 4 III PY-2O-O4 8 IV PY-3-O2 3 IV CY-3-O2 13 IV COY-3-O2 5 IV CCOY-2-O2 4 IV CCOY-3-O2 9 VI CPP-3-2 4 VI CCP-3-1 2 VI CCP-V-1 5 VI CCP-V2-1 7 RM-2 0.25 Δε [1 KHz, 25° C.]: −3.1 Δn [589 nm, 25° C.]: 0.100 Cp: 78° C. γ.sub.1: 87 mPa .Math. s K33: 15.8

Example 13

(113) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 20 below.

(114) TABLE-US-00020 TABLE 20 Formulation of the liquid crystal composition of Example 13 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 19.5 II CPP-3-2V1 9 III PY-2O-O2 5 III PY-2O-O4 3 IV CY-3-O2 13 IV COY-3-O2 9 IV CCOY-3-O2 11 VI CCP-3-1 3 VI CCP-V-1 7 VI CPP-1V-2 11 VII Sb-4O-O4 3.5 VII Sc-Cp1O-O4 6 RM-4 0.37 Δε [1 KHz, 25° C.]: −3.7 Δn [589 nm, 25° C.]: 0.116 Cp: 84° C. γ.sub.1: 111 mPa .Math. s K33: 14.3

Comparative Example 6

(115) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 21 below.

(116) TABLE-US-00021 TABLE 21 Formulation of the liquid crystal composition of Comparative Example 6 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 19.5 CPP-5-2 9 III PY-2O-O2 5 III PY-2O-O4 3 IV CY-3-O2 13 IV COY-3-O2 9 IV CCOY-3-O2 11 VI CCP-3-1 3 VI CCP-V-1 7 VI CPP-1V-2 11 VII Sb-4O-O4 3.5 VII Sc-Cp1O-O4 6 RM-4 0.37 Δε [1 KHz, 25° C.]: −3.8 Δn [589 nm, 25° C.]: 0.113 Cp: 80° C. γ.sub.1: 106 mPa .Math. s K33: 13.1

(117) CPP-3-2V1 in Example 13 is replaced by CPP-5-2 to form Comparative Example 6. Compared with Example 13, Comparative Example 6 has a reduced refractive index, a reduced clearing point, a narrowed liquid crystal use temperature, an increased γ1/K33, and a slowed response. It can be seen therefrom that the liquid crystal composition of the present disclosure has the characteristics of a large refractive index, a wide display temperature and a fast response. In addition, the liquid crystal composition of the present disclosure is used in the manufacture procedure for an ODF liquid crystal device, and the liquid crystal display has no defective displaying.

Example 14

(118) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 22 below.

(119) TABLE-US-00022 TABLE 22 Formulation of the liquid crystal composition of Example 14 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 13.5 II CPP-3-2V1 15 III PY-2O-O2 2 III PY-2O-O4 3 IV PY-3-O2 11 IV COY-3-O2 11.5 IV CCOY-3-O2 7 V CC-2-3 15 V CC-4-3 9 V CP-3-O2 3 VII Sb-Cp1O-O4 3 VII Sc-Cp1O-O2 7 RM-3 0.01 Δε [1 KHz, 25° C.]: −3.3 Δn [589 nm, 25° C.]: 0.102 Cp: 61° C. γ.sub.1: 73 mPa .Math. s K33: 10.9

Example 15

(120) The formulation of the liquid crystal composition and the corresponding properties thereof are as shown in table 23 below.

(121) TABLE-US-00023 TABLE 23 Formulation of the liquid crystal composition of Example 15 and the corresponding properties thereof Liquid crystal Content Category monomer code (in parts by mass) I CC-3-V 1.5 II CPP-3-2V1 7 III PY-2O-O2 3 III PY-2O-O4 1.5 IV PY-3-O2 7 IV COY-3-O2 13 IV CCOY-3-O2 7 V CC-2-3 20.5 V CC-4-3 9 V CC-3-V1 2.5 V CP-3-O2 4 VI CCP-V-1 3 VI CCP-V2-1 2 VI CPP-3-2 7 VII Sb-Cp1O-O4 5 VII Sc-Cp1O-O2 7 RM-2 0.4 Δε [1 KHz, 25° C.]: −3.5 Δn [589 nm, 25° C.]: 0.100 Cp: 65° C. γ.sub.1: 84 mPa .Math. s K33: 11.2

(122) Obviously, the above-mentioned examples of the present disclosure are merely examples for clearly illustrating the present disclosure, rather than limiting the embodiments of the present disclosure; for a person of ordinary skill in the art, on the basis of the above description, other variations or changes in different forms may also be made, it is impossible to exhaustively give all of the embodiments thereof herein, and any obvious variation or change derived from the technical solution of the present invention is still within the scope of protection of the present invention.