TW201000608A - Liquid crystal composition - Google Patents

Abstract

The invention discloses a liquid crystal composition. The liquid crystal composition comprises 40-95 wt% compound A and 5-60 wt% compound B. The structural formula and the substituent of the compound A and the compound B are defined in the specification and the claims. The liquid crystal composition has a wide temperature range at its liquid crystal phase and is suitable for preparing small and medium sized liquid crystal displays.

Description

201000608 IX. Description of the Invention: [Technical Field] The present invention relates to a liquid crystal composition, and more particularly to a liquid crystal composition suitable for producing a small and medium size liquid crystal display. [Prior Art] Since liquid crystal displays have advantages of thinness, light weight, low power consumption, no light pollution, and compatibility with semiconductor process technology, liquid crystal displays have been widely used in various products, such as communication. Fields (such as mobile phones..., wireless phones, fax machines), measurement areas (such as industrial instruments, machines), home life areas (such as audio and video appliances, video games), f-information (such as monitors, portable computers), etc. . Among the many products, the development of personalized information products is the fastest, especially mobile phones, digital cameras, in-car displays, etc., because these products are used for a long time and usually need to be placed inside or outside the car, so these products It is generally desirable to have properties that are used at both high and low temperatures. However, in general, liquid crystal compounds may not fully exhibit their properties at higher temperatures. To further improve this disadvantage, low = it meets the needs of subsequent applications, it is necessary to make the liquid crystal composition have a wide liquid crystal phase temperature, that is, It is necessary to s ^clearing point composition clearing point temperature (Tni) and lowering the crystallization point of the liquid crystal composition. In the US 7,7 patent owned by ADEKA (ADEKA C〇RPORati〇n), a new liquid crystal compound of the following formula is disclosed: '

R

Bo~-cf2-cf=cf2 5 201000608 In the above formula, R represents R", R"〇, R, 〇CO or R"COO, and R" is selected from an alkyl group having an unsaturated bond, - an alkyl group of -CH2-substituted by -〇-, -CO- or -COO-, or an alkyl group having a part or all of a hydrogen atom substituted by a halogen atom or a cyano group; A1 and A2 each represent 1, 4-phenylene, 1,4-cyclohexylene, 2,6-naphthylene or 2,6-decahydronaphthalene (2,6-decahydronaphthylene) 'The 1,4-phenylene group-CH=optionally substituted with -N= or a part or all of the hydrogen atoms of the 1,4-phenylene group are selectively Substituted by an atom or a cyano group, the -CH2- of the 1,4-cyclohexyl group is optionally substituted by -〇- or -S- or a part or all of the hydrogen atoms of the 1,4-cyclohexyl group are derived from the ii Substituted by atom or cyano; z-tabler bond, -COO-, - OCO-, -CH2CH2-, -CH=CH-'-(CH2)4-, -CH2O-, -OCH2-, -(CH2)3 〇-, -〇(CH2)3-, -CH=CHCH20- '-OCH2CH=CH- '-oc-, -cf2o- or -OCF2-; B represents a single bond or a stretching group, and the stretching group a part or all of the hydrogen atoms selectively A halogen atom or cyano, [eta] is 1, 2 or 3, when [eta] is 2 or 3, and each Α1 Ζ are each the same or different. The compound allows the liquid crystal composition to have a low rotational viscosity (γι), a low refractive index anisotropy (Δη), a high dielectric anisotropy (Αε), and a wide liquid crystal. Phase temperature range. The above single liquid crystal compound does not satisfy the demand for subsequent applications, and therefore, ADEKA Corporation of Japan has also applied for a liquid crystal composition containing the compound, such as WO 2006/061966, WO 2006/132015, and WO 2007/277127. The liquid crystal composition of WO 2006/061966 contains 6 201000608 % 15 wt% or more of a compound having a terminal structure represented by the following formula:

F

F In the above formula, Q represents a saturated or unsaturated alkyl group which is optionally substituted by a valence atom and has a carbon number of from 1 to 8. The liquid crystal composition of this patent is mainly suitable for use in an in-plane switching (lps) type display or a low voltage driven twistnematic (TN) type liquid crystal display. ▲In the above patents, although some combinations of liquid crystal compositions have been disclosed, various new products are continuously introduced, especially for small and medium-sized sizes: the demand for the night 曰曰 π 增加 增加 增加 ' ' ' The liquid crystal composition is used for application. In the case of small and medium-sized liquid crystal displays, the quality problem is mainly due to the fact that liquid crystal compounds cannot exhibit originality at higher temperatures. The main problem is that the liquid crystal phase temperature range of the liquid crystal composition is not = the most pin 3 pairs of small and medium size. Liquid crystal display, the disadvantage of liquid crystal composition 0, extends the temperature range of the liquid crystal phase. SUMMARY OF THE INVENTION Therefore, the phase temperature range is an object of the present invention to provide a liquid crystal composition. The liquid crystal composition of the present invention is a compound containing wt% (Β): :40-95 wt% of a compound 201000608 X1 r^g^z'^-g^z2 —/-γ1 (A) X2 R2-(g3-Z3^—G4—z4—〇-CF2—CF=CF2 (B) b , where G, G, G3, and G4 represent 1,4-extension , i, 4_cyclohexylene, 2 6 — anthranyl or 2,6-decahydronaphthyl, the _ch= of the 1,4-phenylene is optionally substituted by -N= or the 1,4-extension One or all of the hydrogen atoms of the phenyl group are optionally substituted by a halogen atom or a cyano group, and the _ch2- of the 1,4-cyclohexylene group is optionally substituted by -Ο-, -N- or -S- or One or all of the hydrogen atoms of 1,4-cyclohexylene are substituted by a _ atom or a cyano group; Z*, Z2 and Z3 represent a single bond, -COO-, -OCO-, ~CH2CH2-, -CH, respectively =CH-, -(CH2)4-, -CH20-, -OCH2-, -(CH2)3〇-, -〇(ch2)3-, -ch=chch2o-, -〇ch2ch=ch-, "- , -CF2〇- or -〇CF2-; z4 represents a single bond or alkylene group' and some or all of the hydrogen atoms of the alkylene group are substituted by a halogen atom or a cyano group; R1 and R2 represent R, R, respectively , ROCO or RCOO, R is selected from having one or a plurality of alkyl groups having an unsaturated bond, having one or more alkyl groups substituted for -CH2- - 〇-, -CO- or -COO-, having one or more substituents for replacing some or all of the hydrogen An alkyl group of an atom or a cyano group, or an alkyl group having one of these combinations; X1, X2 and γΐ respectively represent hydrogen, fluorine, trifluoromethyl, trifluoromethoxy, -OCF2H or an OCFH2 , the condition is that when X1 and X2 are simultaneously hydrogen, 8 201000608

V y1 may not be hydrogen, or _〇cfh2; and a is 0, 1 or 2, b is 1, 2 or 3', when a is 2, each g1 and z1 are the same or different 'When b is At 2 or 3, each of G3 and Z3 is the same or different. According to the demand of commercially available small and medium size liquid crystal displays, the present invention first attempts to combine the above compounds (A) and (B), and according to the characteristics of each compound, such as the compound (A) contains two groups of fluorine atoms or more. , which has a relatively high polarity and exhibits a high Δ ε and a high impedance, and the compound (B) has a low rotational viscosity, a high Δ ε, a high Tni characteristic, a high impedance, and excellent low temperature stability, and is appropriately formulated by the above. The ratio of the content of the two compounds enables a wide liquid crystal phase temperature to be maintained while maintaining appropriate Δη, response speed, 咼Αε and VHR characteristics, and is suitable for producing small and medium-sized liquid crystal displays. [Embodiment] In the composition of the present invention, when the content of the compound (Α) is less than 4 〇 1 wt%, the liquid crystal composition cannot be obtained to have a high Δ ε. The compound (β) has a low rotational viscosity, a high Δε, a high Tni property, a high impedance, and an excellent low-temperature stability. When combined with the compound (A), it is more effective in reducing the viscosity of the entire composition. The Tni temperature is raised and the liquid crystal handle can be presented at a lower temperature, which is to make the temperature range of the liquid crystal phase wider. Preferably, the liquid crystal composition comprises 45 to 9 wt% of the compound (A), 5 to 45 wt% of the compound (B), and 丨~25 of the compound (C) shown below: 9 201000608 r3-{ G5—z5)h(g6^—Z6-G7—Υ2 (where G5 and G6 represent 1,4-phenylene, anthracene, 4-cyclohexylene, 2,6-anthranyl or 2'6, respectively - decahydronaphthyl group - the _CH of the 1, 4-phenylene group is optionally substituted by -N= or a part or all of the hydrogen atoms of the 1,4-extension group are selectively selected from a halogen atom or a cyano group. Substituting, the -CH2- of the 1,4-cyclohexylene group is optionally substituted by -〇-, _N- or -S- or a part or all of the hydrogen atoms of the 1,4-cyclohexylene group are derived from a halogen atom or Substituted by cyano; G7 represents fluorene-phenyl, 3-fluoro-1,4-phenyl, 5-fluoro-1,4-phenyl, M-cyclohexylene, 2,6-anthranyl Or 2,6-decahydronaphthyl; Z5 and Z6 represent a single bond, _c〇〇, 〇c〇-_CH2CH2_, -CH=CH-, -(CH2)4-, -CH20-, _〇, respectively CH2-, _(CH2)3〇-, -〇(CH2)3-, _CH=CHCH20-, -OCH2CH=CH-, -CsC-, -CF2〇- or an OCf2-; R3 denotes R,, R' o, R'OCO or r, COO, R, selected from having one or more An alkyl group having one unsaturated bond, having one or more alkyl groups substituted for 〆-CH2_-CO- or -COO-, having one or more halogen atoms for replacing some or all of the hydrogen atoms Or an alkyl group of a cyano group, or a group having such a combination; Y represents fluorine, gas, 〇CFH2, a linear or branched alkyl group having an interference range of 1 to 7, an alkoxy group, or a carbon a number ranging from 2 to 7 alkenyl, provided that when G is 3-fluoro-1,4-extension, Y2 is not fluorine, gas or mono-CFH2; and C and d are 0, 1 or 2 and c+d> 〇, when c is 2, each of G5 and Z5 is the same or different. 10 201000608 and 咼Tni characteristics. However, its polarity wt% 'will cause the liquid crystal to not become higher. More preferably The liquid crystal group, 5 to 30 wt% of the compound (B) has a low rotational viscosity and a high Tn of the compound (c). When the content of the compound (c) is higher than 25, the Δε' is high. The driving voltage becomes high. The compound contains 65 to 90 wt% of the compound (VIII), 5 to 3 Å, and 1 to 15% by weight of the compound (〇. In the compound (A), preferably, Gi and 〇 Phenyl, 1,4-stretch Cyclohexyl, 3_ 衩, G1 and G2 represent 174_extension-fluoro-1,4-phenylene, 5-fluoro-1,4-phenylene, 3,5-fluoro-1,4-extension, respectively Phenyl or piperidinyl, ζι and z2 represent a single bond, -COO-, -OCO-, -CH2CH2-, -CH=CH-, -ch2〇_, -OCH2-, -CF2〇- or -〇CF2, respectively -, and R1 represents R or R〇, and R is selected from a linear or branched alkyl group having a carbon number ranging from 1 to 7, or a straight chain or branch having an unsaturated bond and having a carbon number ranging from 2 to 7. Alkyl. More preferably, the Zi and Z2 represent a single bond, -COO-, -OCO-, -ch2ch2-, a cp2〇- or -OCF2-, and R1 represents R, and R is selected from a carbon number ranging from 1 to 7. A straight or branched alkyl group, or a linear or branched alkyl group having one unsaturated bond and having a carbon number ranging from 2 to 7. Still more preferably, the compound (A) is selected from

11 k 201000608 k 201000608

riKD~0

Rl_C^^^^^cF3,

12 201000608 R1

R1

R1

13 201000608

14 201000608

F

F F or a combination of these. In a specific example of the invention, the compound (A) is selected from the group consisting of c2h5 Ο

F

F

(hereinafter referred to as "CCP-2FF c3h7"

F

F

(hereinafter referred to as "CCP-3FF C4H9"

F

F (hereinafter referred to as "CCP-4FF") 15 201000608

CsH 5nll

(hereinafter referred to as "CCP-5FF") /

F

F

(hereinafter referred to as "CCP-VFF c2h5"

(hereinafter referred to as "CCP-2TF" c3h7

(hereinafter referred to as "CCP-3TF c4h9"

(hereinafter referred to as "CCP-4TF"

F CCP-3FFF" (hereinafter referred to as 16 201000608

CsH,,

F

F

CCP-4FFF

Called "CCP-5FFF abbreviation "CPP-2FF") F (Following F c2h5 c3h,

Referred to as "CPP-3FF c4h9

(hereinafter referred to as "CPP-4FF")

F

F (below

Referred to as "CPP-5FF c2h5

CF, (to c3h7

Hereinafter referred to as "CPP-2TF", hereinafter referred to as "CPP-3TF" c4h9

(hereinafter referred to as "CPP-4TF C5Hn"

(hereinafter referred to as "CPP-5TF 17 201000608 c2h5"

F

C3h7

C4H9

C, H 5nll

F F (hereinafter referred to as "CPP-2FFF F F F (hereinafter referred to as "CPP-3FFF F F F (hereinafter referred to as "CPP-4FFF F F"

CCGP-3FF" F (hereinafter referred to as "CPP-5FFF F c3h7"

Hereinafter referred to as

F

F (hereinafter referred to as "PEP-3FF" 18 201000608 C4H9

F

(hereinafter referred to as "PEP-4FF") Ο II c- F c2h5

F F (hereinafter referred to as "PP(F)P-2FF" 4FF" C3H7

F

(hereinafter referred to as "PP(F)P-3FF c4h9

(hereinafter referred to as "PP(F)P-F F c2h5^J^

F F (hereinafter referred to as

F F C3li7

F PP(F)P-2FFF") F (below

F F

F c4h9^^ is called "PP(F)P-3FFF"), F (hereinafter referred to as "PP(F)P-4FFF"), 19 201000608

) or this special - a combination.

3FFF MPP-5FFF"

Preferably, G3 and G4 of the compound (B) represent ι, 4-phenylene, L4-cyclohexylene, 3-fluoro-14, phenyl, 5/fluoro-4-phenylene or 3, respectively. 5_敦-1,4-Extension base, z4 represents a single bond and r2 represents r or r〇, and the ruler is selected from a linear or branched alkyl group having a carbon number of 1 to 7, or has an unsaturated bond. And a linear or branched alkyl group having a carbon number ranging from 2 to 7. More preferably, R2 represents R' and R is selected from a straight or branched alkyl group having a carbon number in the range of 丨~7, or a linear or branched alkane having one unsaturated bond and having a carbon number ranging from 2 to 7. base. Still more preferably, the compound (B) is selected from

20

201000608 F CF=CF2 cf=cf2

F

Cf=cf2 cf=cf2 cf=cf2 F

F F

)—0—CF2 F cf=cf2

F cf=cf2

Cf=cf2 21 201000608

〇—cf2—cf=cf2

rK3~0

F o-cf2-cf=cf2

F R2- o-cf2—cf=cf2

R2

O—cf2—cf=cf2 or one of these groups. And more 22 201000608

V ·> Preferably, the compound (B) is selected from

From now on

Called B-CCP-3FF") 23 201000608 F C4H9

——cf2—cf=cf2 (hereinafter referred to as

B-CCP-4FF C3H7

F

B-CPP-3FF o-cf2—CF=CF2F (hereinafter referred to as C2H5)

〇—CF2—CF=CF2 (hereinafter referred to as

B-CCP-2F c3h7

——cf2—cf=cf2 %. B-CCP-3F”) c3h7

(hereinafter referred to as 〇—cf2—cf=cf2 (below

O—cf2—cf=cf2 〇—cf2—cf=cf2 B-CP-4

(hereinafter referred to as "B-CP-3F 24 201000608" or such a combination. And G6 respectively denotes ι, 4-phenylene H, 4-extended base, 5-fluoro-1,4-phenylene or 3 5 - Preferably, the compound (G 1,4-cyclohexylene, fluoro-1,4-phenylene' G7 represents 14-extension or 14-cyclohexylene and R3 represents R' or R , 0, and R, selected from the group consisting of a straight or branched alkyl group of the formula 7, or a linear or branched alkyl group having one unsaturated bond and having a carbon number ranging from 2 to 7. More preferably' R3 represents R ', and R ' is selected from a linear or branched thio group having a carbon number ranging from 1 to 7, or a linear or branched thio group having an unsaturated bond and having a carbon number ranging from 2 to 7. More preferably, the compound (C) is selected from R3.

γ γ2 R3

25 201000608 R3- Y2 R3- /

Y2

F Τ)-ψ or a combination of these. Even more preferably, the compound (C) is selected from the group consisting of R3

^λΖ^υ\, R3

<y' R3-^ R3- R3-^ OO-r^r^y- Y2 26 201000608

Γ2

Or a combination of these. In a specific example of the present invention, the compound (C) is selected from the group consisting of C.H 5Π11

F hereinafter referred to as "PP-5F") c5h,

C4h9 Hereinafter referred to as "CP-5F" hereinafter referred to as "CC-V3" hereinafter referred to as "CC-V4" K.

CgH,, hereinafter referred to as "CC-V5 c3h7

C2H5 hereinafter referred to as "CC-32 c3h7

C4H9 hereinafter referred to as "CC-34 27 201000608 c3h7-

-CsH 5nll hereinafter referred to as "CC-35 / (hereinafter referred to as "CCP-Vl") / / -CH, (hereinafter referred to as "CCP-B1") c3h7

^〇-ch3 (hereinafter referred to as "CCP-31 c3h7"

(hereinafter referred to as "CPP-32") c3h7

general

C3h7 (hereinafter referred to as

C5hu CPP(F)C-35 c3h7 CPPC-33"), (hereinafter referred to as C3H7

F

(hereinafter referred to as "CCGP-3F c3h7"

(hereinafter referred to as "CPP-3F 28 201000608 c3h7

(hereinafter referred to as "CCP-3F"

Cl (hereinafter referred to as "CCP_3C1" The liquid crystal composition of the present invention is prepared by mixing and mixing. The liquid crystal composition of the present invention has a higher than 85 0<^ τ , , » χη_ t , ... / dish degree and the lowest liquid crystal phase The storage temperature is -4 〇. ^, and the dimension of 1 0 has a dielectric anisotropy of 7.8 or more (up to 10.25), which is about 102.102 or less (at 589 nm wavelength), and The response speed is less than 28 msec. The present invention will be further illustrated by the following examples, but it should be understood that this embodiment is for illustrative purposes only and should not be construed as limiting. ;Examples>

Each of the above-mentioned compositions was straight [the common method of the liquid crystal compositions of Examples 1 to 16 and Comparative Examples 1 to 5], and the compounds (A) listed in the following respective examples and comparative examples were respectively subjected to the following Tables 1 to 3, Compound (B) and compound (c) and a compound contained in each component and the content of each compound are mixed' to obtain a liquid crystal composition (the following content is 1 总 of the total weight of the liquid crystal composition produced) 〇wt% to calculate 29 201000608 Z.冢堤驷 inch oo o.sddcn-dGIedd (0. inch fcde-dsu (r(N)dlrn-ddu (orn)dl(N-ddu (ο.£££έυ ( Su) jd inch-duu oTl) Jd inch-duu (ou) ddsuu o.eo&CN-duu o.9)p-,PHPHcn-duu (0.9)ttHUHs-duu (O.SJiK-duu-a (0· Inch) εΛ-οο 0. inch 9·68 (0·/.) (0.(N)dl2du (ο.ε)ΡΗιεέυ (inch, ε)fclOJ-ddu (0 inch) dl inch-duu (inch·/ .) dd inch-ddu qz.) £id(N-ddu (soo iMSuu (0.91) dd inch-duu (o.(NI) ίϋεέυ oz-l) dd(N-duu (1700)diK-duu-a q (N)lurn,duu Ο.ΓΝΙΙ ιηί#marriage (οέίΙεέεΟΗ o.rn)J13-ddu (0.6)&2uu o_6)dd inch-duu q6)JJ£-duu (0.6)&(Ν-αΗυυ q6 )iK-du-« (0 inch) inch - Du-m (0ιΛ))£υ-Η (oz.)[IH<N-duu-« (οΌΙ)ίΜ inch—duu,m (o.lodde-ddu-a ©(NodiK-duu—m o.ooln 0 οο.οο inch (οέ£Μεέε£ (oo.£H(N-ddu ooo JJ2UU 0.11) Jd inch-duu οΌι)££υυ (oil) dd<N-duu (Ioo)d£-du-a o .9)tdu-H (0T)£ua adodjtduu-oq ooI)iMe-ddu-« (0.inch οίΗε-duu-a ΓΙιη 0 οε 0·Α9 (0. inch)pud£-dd (osiK-dGJOdd ooodje -douu (ο.ε) ίίιεέυ (orn)dl(N-ddu (oooPHJe-duu (0·ΙΙ)ίΗ2υυ oooUHiK-duu (o.(Nl)iM(N-duu qZJde-du-H (olotlrrn-duu- PQ (ooo)dd inch-duu_oa (osUHJe-ddu-a (07.)iM£-duu-pq o.rnrn 0

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(0 inch) εε-uddo (0〇〇) Im-duu (0.9) ΙΛ-duu (0. inch IKA-UU (/.. inch) UHs-dd (oddln-du (OT)rnA-uu (Νε

o/Jde-du-a qoltue-duu-H ooo£2uu-a (0OI)&e-ddu-a oOI)Jd£uu-PQ (ο.·εέυ-« (ΟΌΙ)ίΜ inch-duu-a o.oofciK-duu-a (s) 0·Δ (0./.ίτε,ΟΗουυ 0.61 »w^s (OT)d(N-ddu (ods-uddu oe)52uu (O.II)lrlA-uu ( ? 201000608 [Test] The liquid crystal compositions of Example 16 and Comparative Examples 1 to 5 were tested according to the following test methods, and the results are shown in Table 4 below: (1) Clarification point (τηι·, 〇:): Indicates the temperature value from the liquid crystal phase to the liquid state, and is observed under a microscope using a heater. The higher the clearing point temperature is, the better. (2) Refractive anisotropy (Δη): using an Abbe curve at 589.3 nm The test is carried out at a wavelength. According to the demand of small and medium size liquid crystal displays, the range of Δη is preferably 0 07~〇1〇. 〆(3) Dielectric anisotropy (Δε): measured parallel to the long axis of the molecule The average "electrical constant is the difference from the average dielectric constant measured perpendicular to the long axis of the molecule. The liquid crystal composition is injected into an 18-degree anti-parallel test cell' with LC property station at 25 According to the demand of small and medium-sized LCD monitors, the range of Δε is preferably 5~12. (4) The driving display voltage (thresh〇ld v〇ltage, abbreviated as vth, unit # is V): The liquid crystal compositions of Examples 1 to 16 and Comparative Examples 1 to 5 were respectively injected into a 4 μm thick box (ceu), and an electro-optical measurement system (manufactured by AUTR0NIC, Germany, model DMS-501) was used to apply 5 V. , 64Hz voltage, get the curve of the penetration versus voltage. Vth is calculated by computer. The current Vth range used in the industry is about 1.2~1.6 V. (5) Response time (abbreviated as rt, the unit is msec): The liquid crystal compositions of Examples 1 to 16 and Comparative Examples 1 to 5 were respectively injected into a box having a thickness of 4 μm, using an electro-optical measurement system (manufactured by AUTR0NIC, Germany, 33 201000608, model DMS-501), applying 4V, 64 Hz. The voltage is calculated by the computer to obtain RT. Under the voltage of 4V, the response time range is usually expected to be less than 30 msec. (6) The minimum storage temperature of the liquid crystal phase: ～2 g of the liquid crystal composition is respectively charged into a 7 ml transparent glass bottle. , placed in the 〇~_4〇. The 240 hr 'liquid crystal has no solid precipitation and has the lowest temperature of fluidity. __ Table 4 Composition ratio Tni (°C) Δη Δε Vth(V) RT (msec) Minimum storage temperature (°c) Example 1 A92.3, B7.7 92.9 0-0966 9.61 1.288 27.4 -20 Example 2 As2.4, Βπ.6 90 0.0964 9.02 1.312 20.6 -20 Example 3 ^67.0, B33.O 98.1 0.0973 8.33 1.483 21.2 -30 Example 4 A48.8, B51.2 107.1 0.097 8.57 1.488 22 -30 Example 5 A42.O, B58.O 97 0.0957 7.96 1.507 20.5 -30 Example 6 Αδ9.65 Bs.4, C2.O 90.6 0-0975 8.56 1.369 24 -20 Example 7 A84.0, B12.O, C4.O 101.4 0-0937 9.15 1.389 22.0 -20 Example 8 Αδ2.5, Βΐ4.5, C3.O 104.9 0.101 8.58 1.535 19.7 -10 Example 9 Α78.Ο, Big.o, C4.O 100.7 0.0959 9.68 1.294 22.2 - 20 Example 10 Α77.2, Β9.8* C13.0 103.2 0.095 8.69 1.476 20.8 -10 Example 11 Α70.5, Β24.7, C4.8 85.3 0.0982 8.29 1.419 18.3 -40 Example Α 9.069.0, Β26.Ο, C5.0 96.5 0.1 8.8 1.46 18.1 -40 Example 13 Αόό.Ν 0.520.5, C]3.4 105.5 0.102 8.68 1.53 19.7 -10 Example 14 ▲62.0, Β15.Ο, C23.O 94.8 0.0971 8.42 1.419 19.9 -10 Example 15 Α55.Ο, Β26.Ο, C19.O 100.8 ----- 0.0987 9.51 1.349 20.3 -10 Example 16 Α48.Ο, Β45.Ο, C7.O 108.3 0.0961 10.25 1.431 21.5 -10 Comparative Example 1 Α97.Ο»C3.O 81.7 0.0988 8.72 1.386 19.5 -20 Comparative Example 2 As8.3 , Cu.7 80.1 0.099 8.05 1.4 21 -20 Comparative Example 3 Aeg.o, C32.0 81.1 0.0966 8.54 1.335 17.2 -10 Comparative Example 4 Αό4.〇5 C36.0 76.8 0.0961 8.33 1.493 17.9 -10 Comparative Example 5 A" ·. , C43.O 89.5 ^0996 7.16 1.61 15.1 0 34 201000608 » [Results] In the results of the actualized examples 1 to ι6 in Table 4, if 〇(9) ι〇2, △ ε is 7.96~10·25, Vth is 1.288~ι·535 and response time is 18.1~27.4, which fully meets the needs of the industry (especially for small and medium size LCD monitors). In particular, the examples 丨~^ are both higher than 85〇〇c (to 108.3 C) and the minimum storage temperature of the liquid crystal phase is _1〇~-4〇〇c. Conversely, Comparative Example 1~ The Tni of 5 is only 89 5 〇c and the liquid crystal phase is the highest, and the low storage temperature is _2 〇 ° C. It can be seen that the liquid crystal compositions of Examples 1 to 16 have a relatively wide liquid crystal phase temperature (—4 〇.〇 1〇8.3.〇, and verifying that Examples 1 to 16 can obtain a wider liquid crystal phase temperature range by adding the compound (B) or adding the compound (B) and the compound (c) '. In summary, the present invention The liquid crystal composition is obtained by a combination of the compounds (A) and (B), or a compound (C) is selectively added, and a ratio of the contents of the compounds is appropriately formulated to obtain a liquid crystal composition suitable for use in the subsequent industry. The composition has a wide liquid crystal phase temperature range (_4〇~〗 〇8 3 匸). ί _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Scope, that is, the simple equivalent of the scope of the patent application and the description of the invention Changes and modifications are still within the scope of the patent of the present invention. [Simplified description of the diagram] [Explanation of main component symbols]

Claims (1)

201000608 X. Patent application scope: wt% of the compound (B) shown below: 1 · A liquid crystal composition comprising: 4〇~95 (A) and 5~60 wt% of X1 R1 as shown below ^G1_ZVg2-Z2-^^-yi (A) r2_^-Z3^_g4—z4—〇_cf2_cf=cf2 (8) , where G1, G2, G3 and π represent phenyl, i4, cyclohexyl, 2, 6, respectively - a naphthyl group or a 2,6-decahydronaphthyl group, the rhyme of the 14-extension base is optionally substituted by -N= or the hydrazine, a part or all of the hydrogen atoms of the 4_extension base are selectively Substituted by a halogen atom or a cyano group, -CH2- is optionally substituted by -◦_, _N_ or -s_ or a part or all of a hydrogen atom of a 4-cyclohexylene group. Replaced by a halogen atom or a cyano group z, Z2 and z3 respectively represent a single bond, -c〇〇_ _〇c〇, -ch2ch2 ch=ch---(CH2)4——ch2o——〇ch2-, -(ch2)3〇-,- 0(Ch2)3_, _CH=CHCH2〇_-och2ch=ch-, -c tri C-, -CF20- or -〇cf2-; z4 represents a single bond or an alkyl group, and a part of the alkyl group Or all of the hydrogen atoms are replaced by a halogen atom or a cyano group; R and R2 respectively represent R, RO, R〇c〇 or RC〇〇, and R is selected from an alkyl group having one or more unsaturated bonds, having one or more An alkyl group substituted with -CH2- -Ο-, -CO- or -COO_, an alkyl group having 36 or 20100608 one or more halogen atoms or cyano groups substituted for some or all of the hydrogen atoms, or An alkyl group having one of these combinations; X, x2 and γ1 respectively represent hydrogen, I, trifluoromethyl, trifluoromethoxy, -OCF2H or -〇CFH2, provided that when both X1 and χ2 are simultaneously hydrogen Y1 may not be hydrogen, fluorine or -〇CFH2; and a is 〇, 1 or 2, b is 1, 2 or 3. When a is 2, each G1 and Z1 are the same or different 'When b is At 2 or 3, each of G3 r and Z3 is the same or different. 2. The liquid crystal composition according to the invention of claim 2, comprising 45 to 90 wt% of the compound (a), 5 to 45 wt% of the compound (B), and 1 to 25 wt% of the following Compound (c): R3-(g5-z5^-(g6)j--z6-G7-Y2 (C) wherein G and G6 represent 14_phenylene, 14-cyclohexylene, 2,6 _Naphthyl or 2,6-decahydronaphthyl, the -CH of the 1,4-phenylene group is optionally substituted by -N= or a part or all of the 1,4- atom Selectively substituted by a dentate atom or a cyano group, the -CH2- of the 1,4-cyclohexyl group is optionally substituted by -〇-, -N- or -S- or the Μ-extension cyclylene Injury or all hydrogen atoms are replaced by halogen or cyano; & 丨, 4-phenyl, 3-fluoro-M-phenyl, 5-fluoro-1,4-phenyl, 匕4 - Cyclohexyl, 2,6-anthranyl or 2,6-decahydronaphthyl; 2 and Z6 represent a single bond, -c〇〇_, -〇co_, one (:Ιί2(:Η2_, -CH, respectively) =CH- > -(CH2)4- ^ -CH20- ' -〇CH2---(CH2)30-, -〇(CH2)3-, -ch=chch2o-, -〇CH2CH=CH_, «- , -CF2〇- or -OCF2-; 37 201000608 R3 means R', R'O, R'OCO Or R'COO, R, selected from an alkyl group having one or more unsaturated bonds, having one or more alkyl groups substituted for -CH2-, -CO- or -COO-, and A female having one or more alkyl groups to replace a halogen group of a part or all of hydrogen atoms, or an alkyl group having such a combination; Υ2 means fluorine, gas, 〇CFH2, carbon number range 丨~ A linear alkyl group, an alkoxy group, or an alkenyl group having a carbon number ranging from 2 to 7, wherein the 疋MG is a 3-fluoro-1,4-extension base, and the 'Y2 cannot be Fluorine, chlorine bite-OCFH2; and c and d are respectively 〇,; [or 2 and c+d> 〇, when c is 2, each G5 and Z5 are the same or different. 3. According to the scope of patent application The liquid crystal composition according to item 2, which comprises 65 to 90% by weight of the compound (a), 5 to 30% by weight of the compound (B) and 1 to 15% by weight of the compound. The liquid crystal composition according to item 2, wherein 'G1 and G2 of the compound (A) respectively represent 1,4-phenylene, 1,4-cyclohexylene, 3-fluoro-1,4-phenylene , 5-fluoro-1,4-extension base, 3,5-fluoro-M-extension base or piperazine Base, Z1 and Z2 represent a single bond, -COO-, -C〇-, -CH2CH2-, -CH=CH-'-CH20-, -OCH2-, -CF2〇- or _〇cf2-, respectively, and R1 R or R〇 is represented, and R is selected from a linear or branched alkyl group having a carbon number of 1 to 7, or a linear or branched alkyl group having one unsaturated bond and having a carbon number of 2 to 7. 5. The liquid crystal composition according to claim 4, wherein the compound (A) is selected from the group consisting of 38 201000608 R1 RlKI F F ^VJ^0CF3 R1 R1 F F CF, r, aI F F F R1 39 201000608 40 201000608 F f R1——N N F F F or a combination of the above 6. According to the scope of the patent application, the compound (A) is a liquid crystal composition selected from the group, wherein the F F R1 CF3. R1 F F F F -F 41 201000608 R1- F F F 42 201000608 F F F or a combination of these. 7. The liquid crystal composition according to claim 6, wherein the compound (A) is selected from the group consisting of F C2h5- ^^~CF3, 43 201000608 c4h9- c2h5 44 201000608 F C4h9 C5Hn F F F 45 201000608 F / F F F F C4H9 F F F c2h5 F F 46 201000608 F F F F F F F F or one of these combinations. 8. The liquid crystal composition according to claim 1 or 2, wherein G3 and G4 of the compound (B) represent 1,4-phenylene, 1,4-cyclohexylene, 3-fluoro -1,4-phenylene, 5-fluoro-M-phenylene or 3,5-fluoro-1,4-phenylene, Z4 represents a single bond and R2 represents R or RO, and R is selected from carbon A linear or branched alkyl group having a number ranging from 1 to 7, or a linear or branched alkyl group having one unsaturated bond and having a carbon number ranging from 2 to 7. The liquid crystal composition according to claim 8, wherein the compound (B) is selected from the group consisting of R2 R2- o O-CF2—CF=CF2 -o—cf2—cf=cf2 F F —cf2— F cf=cf2 48 201000608 F 〇—cf2—cf=cf2 F F O—cf2—cf=cf2 F F o—CF2—CF=CF2 F O—cf2—cf=cf2 F O—cf2—cf=cf2 F F. F O—cf2—cf=cf2 F 0—CF2—CF=CF〇 F 49 201000608 R2- Qt 〇—cf2—cf=cf2 o—CF9—CF=CF, o—cf2—CF=CF2, or a combination thereof. 10. The liquid crystal composition according to claim 9 wherein compound (B) is 〇—cf2—cf=cf2 F ——cf2—cf=cf2 F O—cf2—cf=cf2 o—cf2—cf=cf2 50 201000608 〇—cf2—cf=cf2 or a combination of these. The liquid crystal composition according to claim 10, wherein the compound (B) is selected from the group consisting of F c3h7 〇—cf2—CF=CF2 F C3h7_ -o-cf2—cf=cf2 51 201000608 ^ ^ ^ or one of these combinations. The liquid crystal composition according to claim 2, wherein the crucible. The G and G6 of the substance (C) respectively represent 14 stupid base, ι 4 stretched ring 13 fluoro-1,4-extension base, 5_gas_丨, 4-phenylene or 3,5-fluoro] , 4_ extends a base, G7 represents a phenyl or 14-cyclohexylene group, and r3 represents or RO and R is selected from a linear or branched carbon group having a carbon number ranging from 1 to 7, or a A saturated bond and a carbon number in the range of 2 to 7 or a branched alkyl group. The liquid crystal composition according to claim 12, wherein the compound (C) is selected from the group consisting of R3 R3 52 201000608 Y2 or a combination of the above, the liquid crystal composition according to claim 13 wherein the compound (C) is selected from the group consisting of rK^O~y2, rK^O~y2, 53 201000608 r3 Γ2 r3 \Ι Y2 Or a combination of such a liquid crystal composition according to claim 14, wherein the compound (C) is selected from the group consisting of C5H! C5h, Ο- 〇' ο c4h9 54 201000608 -C5Hu -c2h5 c3h7 C4h9 c3h7 o CsH,, / / I CH, C3H7 C3h7 C3h7 C3h7 c3h7 C5Hn c3h7 \ F-F 55 201000608 c3h7_c3h7_-Cl or a combination of such a liquid crystal composition according to claim 2, wherein the compound (A) is selected from the group consisting of C.H 5ηΠ C2h5 c3h7 CF, CF, 56 201000608 c4h9 <y<y〇 c2h5 F c2h5 c3h7 c4h9 57 201000608 F C4h9- C^H 5nll C3h7 F 58 201000608 C.H 5nll F F F C3H7 F F c3h7 C2h5 F c4h9 c-o F F F F F c3h7—~« F c4h9 F F c2HsO^ F F 59 201000608 C^H C3h7 % F C5Hn F or a combination of these; the compound (B) is selected from 60 201000608 C4H9 F O—cf2—cf=cf2 F C3H7 F 0—cf2—cf=cf2 F c2h5 F O-CF2—CF=CF2 c3h7 F o—cf2—CF=CF2 c3h7 0—cf2—cf=cf2 c4h9 O—cf2—cf=cf2 c3h7 F O_cf2—cf=cf2 or such a combination; and the compound (C) is selected from C.H 5nll F C5H„_ )~F, 61 201000608 Y-c4h9 C3h7 \-c2h5 c3h7 11 c3h7 C2H5 c3h7 F C3H7 C5h 11 c3h7 62 201000608 c3h7- c3h7_ c3h7 Or a combination of these. 63