LIQUID-CRYSTALLINE MEDIUM AND LIQUID-CRYSTAL DISPLAY COMPRISING THE SAME

Abstract

The invention relates to a liquid-crystalline medium, preferably having a nematic phase and dielectric anisotropy of 0.5 or more, which comprises one or more compounds of formula D

##STR00001## in which the parameters have the meanings given in the text,
to the use thereof in an electro-optical display, particularly in an active-matrix display based on the IPS or FFS effect, to displays of this type which contain a liquid-crystalline medium of this type, and to the compounds of formula T and their use for the improvement of the transmission and/or response times of a liquid-crystalline medium which comprises one or more additional mesogenic compounds.

Claims

1. Liquid-crystalline medium characterized in that it comprises one or more compounds of formula D ##STR00225## R.sup.1 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy preferably having 1 to 7 C atoms, wherein one —CH.sub.2— group may be replaced by cyclopropylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclo-pentenylene, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl preferably having 2 to 7 C atoms, wherein one —CH.sub.2— group may be replaced by cyclopropylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclo-pentenylene, and X denotes F, Cl, CN, NCS fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxy, the latter four groups preferably having 1 to 4 C atoms, preferably F, CF.sub.3 or OCF.sub.3.

2. Medium according to claim 1, characterised in that it comprises one or more compounds of formula S, which are selected from the group of compounds of formulae D-1 and D-2: ##STR00226## in which R.sup.1 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms, and X denotes F, Cl, fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyloxy.

3. Medium according to claim 2, characterised in that it comprises one or more compounds of formula formulae D-1 and/or one or more compounds of formula D-2, preferably one or more compounds selected from the group of compounds of formulae D1-1 bis D1-3 and/or one or more compounds selected from the group of compounds of formulae D-2-1 bis D-2-3.

4. Medium according to claim 1, characterised in that it comprises one or more compounds selected from the group of compounds of formulae II and III: ##STR00227## in which R.sup.2 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy having 1 to 7 C atoms, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms, ##STR00228## on each appearance, independently of one another, denote ##STR00229## L.sup.21 and L.sup.22 denote H or F, X.sup.2 denotes halogen, halogenated alkyl or alkoxy having 1 to 3 C atoms or halogenated alkenyl or alkenyloxy having 2 or 3 C atoms, m denotes 0, 1, 2 or 3, R.sup.3 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy having 1 to 7 C atoms, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms ##STR00230## on each appearance, independently of one another, are ##STR00231## L.sup.31 and L.sup.32, independently of one another, denote H or F, X.sup.3 denotes halogen, halogenated alkyl or alkoxy having 1 to 3 C atoms or halogenated alkenyl or alkenyloxy having 2 or 3 C atoms, F, Cl, —OCF.sub.3, —OCHF.sub.2, —O—CH.sub.2CF.sub.3, —O—CH═CF.sub.2, —O—CH═CH.sub.2 or —CF.sub.3, Z.sup.3 denotes —CH.sub.2CH.sub.2—, —CF.sub.2CF.sub.2—, —COO—, trans-CH═CH—, trans-CF═CF—, —CH.sub.2O— or a single bond, and n denotes 0, 1, 2 or 3.

5. Liquid-crystalline medium according to claim 4, characterised in that it comprises one or more compounds selected from the group of formulae IV and V: ##STR00232## in which R.sup.41 and R.sup.42, independently of one another, have the meaning indicated in claim 4 for R.sup.2 under formula II, ##STR00233## independently of one another and, if ##STR00234##  occurs twice, also these independently of one another, denote ##STR00235## Z.sup.41 and Z.sup.42, independently of one another and, if Z.sup.41 occurs twice, also these independently of one another, denote —CH.sub.2CH.sub.2—, —COO—, trans-CH═CH—, trans-CF═CF—, —CH.sub.2O—, —CF.sub.2O—, —C≡C— or a single bond, p denotes 0, 1 or 2, R.sup.51 and R.sup.52, independently of one another, have one of the meanings given in claim 4 for R.sup.41 and R.sup.42 ##STR00236## if present, each, independently of one another, denote ##STR00237## Z.sup.51 to Z.sup.53 each, independently of one another, denote —CH.sub.2—CH.sub.2—, —CH.sub.2—O—, —CH═CH—, —C≡C—, —COO— or a single bond, and i and j each, independently of one another, denote 0 or 1.

6. Liquid-crystalline medium according to claim 5, characterised in that it comprises one or more compounds selected from the group of formulae VI to IX: ##STR00238## wherein R.sup.61 denotes an unsubstituted alkyl radical having 1 to 7 C atoms, an unsubstituted alkenyl radical having 2 to 7 C atoms, an unsubstituted alkoxy radical having 1 to 6 C atoms or an unsubstituted alkenyloxy radical having 2 to 6 C atoms, R.sup.62 denotes an unsubstituted alkyl radical having 1 to 7 C atoms, an unsubstituted alkoxy radical having 1 to 6 C atoms or an unsubstituted alkenyloxy radical having 2 to 6 C atoms, and l denotes 0 or 1, R.sup.71 denotes an unsubstituted alkyl radical having 1 to 7 C atoms, or an unsubstituted alkenyl radical having 2 to 7 C atoms, R.sup.72 denotes an unsubstituted alkyl radical having 1 to 7 C atoms, an unsubstituted alkoxy radical having 1 to 6 C atoms or an unsubstituted alkenyloxy radical having 2 to 6 C atoms, ##STR00239##  denotes ##STR00240## R.sup.81 denotes an unsubstituted alkyl radical having 1 to 7 C atoms, or an unsubstituted alkenyl radical having 2 to 7 C atoms, R.sup.82 denotes an unsubstituted alkyl radical having 1 to 7 C atoms, an unsubstituted alkoxy radical having 1 to 6 C atoms or an unsubstituted alkenyloxy radical having 2 to 6 C atoms, preferably having 2, 3 or 4 C atoms, ##STR00241##  denotes ##STR00242## Z.sup.8 denotes —(C═O)—O—, —CH.sub.2—O—, —CF.sub.2—O— or —CH.sub.2—CH.sub.2—, o denotes 0 or 1, R.sup.91 and R.sup.92 independently of one another have the meaning given for R.sup.72 above, ##STR00243## p and q independently of each other denote 0 or 1.

7. Medium according to claim 1, characterised in that it comprises one or more compounds of formula I ##STR00244## in which ##STR00245##  denotes ##STR00246##  denotes ##STR00247## n denotes 0 or 1, R.sup.11 and R.sup.12 independently of each other denote alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy, preferably having 1 to 7 C atoms, wherein one —CH.sub.2— group may be replaced by cyclopropylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclo-pentenylene, preferably by cyclopropylene or 1,3-cyclopentylene, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms, wherein one —CH.sub.2— group may be replaced by cyclopropylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclopentenylene, preferably by cyclo-propylene or 1,3-cyclopentylene, and R.sup.11 alternatively denotes R.sup.1 and R.sup.12 alternatively denotes X.sup.1, R.sup.1 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy preferably having 1 to 7 C atoms wherein one —CH.sub.2— group may be replaced by cyclo-propylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclo-pentenylene, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl preferably having 2 to 7 C atoms, wherein one —CH.sub.2— group may be replaced by cyclopropylene, 1,3-cyclobutylene, 1,3-cyclopentylene, 1,3-cyclopentenylene, and X.sup.1 denotes F, Cl, fluorinated alkyl, fluorinated alkenyl, fluorinated alkoxy or fluorinated alkenyoxy.

8. Medium according to claim 7, characterised in that the total concentration of the compounds of formula S in the medium as a whole is 1% or more to 60% or less, preferably to 30% or less.

9. Medium according to claim 1, characterised in that it additionally comprises one or more chiral compounds.

10. Electro-optical display or electro-optical component, characterised in that it comprises a liquid-crystalline medium according to claim 1.

11. Display according to claim 10, characterised in that it is based on the IPS-, FFS, HB-FFS and XB-FFS mode.

12. Display according to claim 10, characterised in that it contains an active-matrix addressing device.

13. (canceled)

14. Display according to claim 10, characterised in that it is a mobile display.

15. Process for the preparation of a liquid-crystalline medium according to claim 1, characterised in that one or more compounds of formula S are mixed with one or more additional mesogenic compounds.

Description

EXAMPLES

[0371] The following examples explain the present invention without restricting it in any way. However, the physical properties make it clear to the person skilled in the art what properties can be achieved and in what ranges they can be modified. In particular, the combination of the various properties which can preferably be achieved is thus well defined for the person skilled in the art.

[0372] Preferably used are one or more of the following compounds of formula D-1

TABLE-US-00007 D-1 [00223] R.sup.1 X Phase range Δε CH.sub.3 F C.sub.2H.sub.5 F C.sub.3H.sub.7 F C S.sub.A 94 N 117 I 13.4 C.sub.4H.sub.9 F C.sub.5H.sub.11 F C.sub.6H.sub.13 F C.sub.7H.sub.15 F CH.sub.2═CH F CH.sub.2═CH—CH.sub.2 F CH.sub.2═CH—[CH.sub.2].sub.2 F CH.sub.3—CH.sub.2═CH F CH.sub.3—CH.sub.2═CH—[CH.sub.2].sub.2 F CH.sub.3 CF.sub.3 C.sub.2H.sub.5 CF.sub.3 C.sub.3H.sub.7 CF.sub.3 C 120 S.sub.B 164 I 22.0 C.sub.4H.sub.9 CF.sub.3 C.sub.5H.sub.11 CF.sub.3 C.sub.6H.sub.13 CF.sub.3 C.sub.7H.sub.15 CF.sub.3 CH.sub.2═CH CF.sub.3 CH.sub.2═CH—CH.sub.2 CF.sub.3 CH.sub.2═CH—[CH.sub.2].sub.2 CF.sub.3 CH.sub.3—CH.sub.2═CH CF.sub.3 CH.sub.3—CH.sub.2═CH—[CH.sub.2].sub.2 CF.sub.3 CH.sub.3 OCF.sub.3 C.sub.2H.sub.5 OCF.sub.3 C.sub.3H.sub.7 OCF.sub.3 C 72 S.sub.B 160 S.sub.A 166 1 17.0 C.sub.4H.sub.9 OCF.sub.3 C.sub.5H.sub.11 OCF.sub.3 C.sub.6H.sub.13 OCF.sub.3 C.sub.7H.sub.15 OCF.sub.3 CH.sub.2═CH OCF.sub.3 CH.sub.2═CH—CH.sub.2 OCF.sub.3 CH.sub.2═CH—[CH.sub.2].sub.2 OCF.sub.3 CH.sub.3—CH.sub.2═CH OCF.sub.3 CH.sub.3—CH.sub.2═CH—[CH.sub.2].sub.2 OCF.sub.3

[0373] In a second preferred embodiment one or more of the following compounds of formula D-2 are preferably used:

TABLE-US-00008 D-2 [00224] R.sup.1 X Phase range Δε CH.sub.3 F C.sub.2H.sub.5 F C.sub.3H.sub.7 F C 70 S.sub.A 86 N 98 I 18.0 C.sub.4H.sub.9 F C.sub.5H.sub.11 F C.sub.6H.sub.13 F C.sub.7H.sub.15 F CH.sub.2═CH F CH.sub.2═CH—CH.sub.2 F CH.sub.2═CH—[CH.sub.2].sub.2 F CH.sub.3—CH.sub.2═CH F CH.sub.3—CH.sub.2═CH—[CH.sub.2].sub.2 F CH.sub.3 CF.sub.3 C.sub.2H.sub.5 CF.sub.3 C.sub.3H.sub.7 CF.sub.3 C 111 I 26.0 C.sub.4H.sub.9 CF.sub.3 C.sub.5H.sub.11 CF.sub.3 C.sub.6H.sub.13 CF.sub.3 C.sub.7H.sub.15 CF.sub.3 CH.sub.2═CH CF.sub.3 CH.sub.2═CH—CH.sub.2 CF.sub.3 CH.sub.2═CH—[CH.sub.2].sub.2 CF.sub.3 CH.sub.3—CH.sub.2═CH CF.sub.3 CH.sub.3—CH.sub.2═CH—[CH.sub.2].sub.2 CF.sub.3 CH.sub.3 OCF.sub.3 C.sub.2H.sub.5 OCF.sub.3 C.sub.3H.sub.7 OCF.sub.3 C 55 S.sub.A 132 I C.sub.4H.sub.9 OCF.sub.3 C.sub.5H.sub.11 OCF.sub.3 C.sub.6H.sub.13 OCF.sub.3 C.sub.7H.sub.15 OCF.sub.3 CH.sub.2═CH OCF.sub.3 CH.sub.2═CH—CH.sub.2 OCF.sub.3 CH.sub.2═CH—[CH.sub.2].sub.2 OCF.sub.3 CH.sub.3—CH.sub.2═CH OCF.sub.3 CH.sub.3—CH.sub.2═CH—[CH.sub.2].sub.2 OCF.sub.3

Mixture Examples

[0374] In the following are exemplary mixtures disclosed.

Example 1

[0375] The following mixture (M-1) is prepared and investigated.

TABLE-US-00009 Compound c [%] Property APUQU-2-F 4.0 T (N, I) [° C.]: 76.5 PPGU-3-F 0.5 Δn (589 nm, 20° C.): 0.1174 CLP-V-1 5.0 n.sub.e (589 nm, 20° C.): 1.6089 PGP-1-2V 6.0 n.sub.o (589 nm, 20° C.): 1.4915 PGP-2-2V 15.0 Δε (1 kHz, 20° C.): 2.4 PP-1-2V1 6.5 ε.sub.∥ (1 kHz, 20° C.): 5.0 CC-3-V 51.5 ε.sub.⊥ (1 kHz, 20° C.): 2.7 CC-3-V1 4.0 γ.sub.1 (20° C.) [mPa s]: 49 CLP-3-T 3.5 k.sub.11 (20° C.) [pN]: 15.6 DLP-3-T 4.0 k.sub.33 (20° C.) [pN]: 14.2 Σ 100.0

[0376] This mixture, mixture M-1, is characterized by a low γ.sub.1/k.sub.11 ratio, which

Example 2

[0377] The following mixture (M-2) is prepared and investigated.

TABLE-US-00010 Compound c [%] Property APUQU-2-F 4.0 T (N, I) [° C.]: 75 PPGU-3-F 0.5 Δn (589 nm, 20° C.): 0.1175 CLP-1V-1 2.5 n.sub.e (589 nm, 20° C.): 1.6084 PGP-1-2V 6.5 n.sub.o (589 nm, 20° C.): 1.4909 PGP-2-2V 15.0 Δε (1 kHz, 20° C.): 2.4 PP-1-2V1 7.0 ε.sub.∥ (1 kHz, 20° C.): 5.1 CC-3-V 52.5 ε.sub.⊥ (1 kHz, 20° C.): 2.7 CC-3-V1 4.0 γ.sub.1 (20° C.) [mPa s]: 48 CLP-3-T 4.0 k.sub.11 (20° C.) [pN]: 15.4 DLP-3-T 4.0 k.sub.33 (20° C.) [pN]: 14.4 Σ 100.0

[0378] This mixture, mixture M-2, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response times.

Example 3

[0379] The following mixture (M-3) is prepared and investigated.

TABLE-US-00011 Compound c [%] Property APUQU-2-F 4.0 T (N, I) [° C.]: 75.5 PPGU-3-F 0.5 Δn (589 nm, 20° C.): 0.1172 CCP-V-1 4.0 n.sub.e (589 nm, 20° C.): 1.6089 PGP-1-2V 6.0 n.sub.o (589 nm, 20° C.): 1.4917 PGP-2-2V 16.0 Δε (1 kHz, 20° C.): 2.4 PP-1-2V1 6.5 ε.sub.∥ (1 kHz, 20° C.): 5.1 CC-3-V 51.0 ε.sub.⊥ (1 kHz, 20° C.): 2.7 CC-3-V1 4.0 γ.sub.1 (20° C.) [mPa s]: 49 CLP-3-T 4.0 k.sub.11 (20° C.) [pN]: 15.2 DLP-3-T 4.0 k.sub.33 (20° C.) [pN]: 14.3 Σ 100.0

[0380] This mixture, mixture M-3, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response times.

Example 4

[0381] The following mixture (M-4) is prepared and investigated.

TABLE-US-00012 Compound c [%] Property APUQU-2-F 3.0 T (N, I) [° C.]: 75 PGUQU-3-F 2.0 Δn (589 nm, 20° C.): 0.1164 PPGU-3-F 0.5 n.sub.e (589 nm, 20° C.): 1.6087 CCP-V-1 7.0 n.sub.o (589 nm, 20° C.): 1.4923 PGP-1-2V 5.5 Δε (1 kHz, 20° C.): 2.5 PGP-2-2V 16.0 ε.sub.∥ (1 kHz, 20° C.): 5.2 PP-1-2V1 6.0 ε.sub.⊥ (1 kHz, 20° C.): 2.7 CC-3-V 51.5 γ.sub.1 (20° C.) [mPa s]: 49 CC-3-V1 3.5 k.sub.11 (20° C.) [pN]: 14.3 DLP-3-T 5.0 k.sub.33 (20° C.) [pN]: 14.8 Σ 100.0

[0382] This mixture, mixture M-4, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response time.

Example 5

[0383] The following mixture (M-5) is prepared and investigated.

TABLE-US-00013 Compound c [%] Property CDUQU-3-F 8.0 T (N, I) [° C.]: 96.5 DGUQU-4-F 5.0 Δn (589 nm, 20° C.): 0.1124 DPGU-4-F 2.0 n.sub.e (589 nm, 20° C.): 1.5978 PGUQU-4-F 9.5 n.sub.o (589 nm, 20° C.): 1.4854 CLP-3-T 5.0 Δε (1 kHz, 20° C.): 8.7 DLP-3-T 3.0 ε.sub.∥ (1 kHz, 20° C.): 11.8 CCP-V-1 9.0 ε.sub.⊥ (1 kHz, 20° C.): 3.1 CLP-V-1 7.0 γ.sub.1 (20° C.) [mPa s]: 91 PGP-2-2V 5.0 k.sub.11 (20° C.) [pN]: 18.9 CC-3-2V1 7.0 k.sub.33 (20° C.) [pN]: 18.4 CC-3-V 27.5 CC-3-V1 9.0 PP-1-2V1 3.0 Σ 100.0

[0384] This mixture, mixture M-5, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response times.

Example 6

[0385] The following mixture (M-6) is prepared and investigated.

TABLE-US-00014 Compound c [%] Property CDUQU-3-F 8.0 T (N, I) [° C.]: 98 DGUQU-4-F 5.0 Δn (589 nm, 20° C.): 0.1119 DPGU-4-F 2.0 n.sub.e (589 nm, 20° C.): 1.5976 PGUQU-4-F 9.5 n.sub.o (589 nm, 20° C.): 1.4857 CLP-3-T 5.0 Δε (1 kHz, 20° C.): 8.7 DLP-3-T 3.0 ε.sub.∥ (1 kHz, 20° C.): 11.8 CCP-V-1 9.0 ε.sub.⊥ (1 kHz, 20° C.): 3.1 CLP-V-1 7.5 γ.sub.1 (20° C.) [mPa s]: 94 PGP-2-2V 4.5 K.sub.11 (20° C.) [pN]: 19.7 CC-3-2V1 8.0 k.sub.33 (20° C.) [pN]: 19.6 CC-3-V 25.5 CC-3-V1 10.0 PP-1-2V1 3.0 Σ 100.0

[0386] This mixture, mixture M-6, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response times.

Example 7

[0387] The following mixture (M-7) is prepared and investigated.

TABLE-US-00015 Compound c [%] Property CDUQU-3-F 9.0 T (N, I) [° C.]: 96 DGUQU-4-F 4.5 Δn (589 nm, 20° C.): 0.1118 DPGU-4-F 2.5 n.sub.e (589 nm, 20° C.): 1.5974 PGUQU-4-F 7.0 n.sub.o (589 nm, 20° C.): 1.4856 DLG-3-T 7.0 Δε (1 kHz, 20° C.): 9.0 CCP-V-1 9.5 ε.sub.∥ (1 kHz, 20° C.): 12.2 CCP-V2-1 8.5 ε.sub.⊥ (1 kHz, 20° C.): 3.2 PGP-2-2V 6.0 γ.sub.1 (20° C.) [mPa s]: 96 CC-3-2V1 8.0 k.sub.11 (20° C.) [pN]: 18.9 CC-3-V 23.0 k.sub.33 (20° C.) [pN]: 18.4 CC-3-V1 10.0 PP-1-2V1 5.0 Σ 100.0

[0388] This mixture, mixture M-7, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response times.

Example 8

[0389] The following mixture (M-8) is prepared and investigated.

TABLE-US-00016 Compound c [%] Property CDUQU-3-F 3.0 T (N, I) [° C.]: 95.5 DGUQU-4-F 4.5 Δn (589 nm, 20° C.): 0.1127 DPGU-4-F 3.0 n.sub.e (589 nm, 20° C.): 1.6007 PGUQU-4-F 5.0 n.sub.o (589 nm, 20° C.): 1.4880 DLG-3-T 6.5 Δε (1 kHz, 20° C.): 6.3 CCP-V-1 12.0 ε.sub.∥ (1 kHz, 20° C.): 9.3 CCP-V2-1 9.5 ε.sub.⊥ (1 kHz, 20° C.): 3.0 PGP-2-2V 8.5 γ.sub.1 (20° C.) [mPa s]: 84 CC-3-2V1 8.0 k.sub.11 (20° C.) [pN]: 18.5 CC-3-V 26.0 k.sub.33 (20° C.) [pN]: 18.1 CC-3-V1 9.0 PP-1-2V1 5.0 Σ 100.0

[0390] This mixture, mixture M-8, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response times.

Example 9

[0391] The following mixture (M-9) is prepared and investigated.

TABLE-US-00017 Compound c [%] Property APUQU-2-F 3.5 T (N, I) [° C.]: 74 PGUQU-3-F 3.0 Δn (589 nm, 20° C.): 0.1175 PPGU-3-F 0.5 n.sub.e (589 nm, 20° C.): 1.6096 CCP-V-1 5.5 n.sub.o (589 nm, 20° C.): 1.4921 PGP-1-2V 6.0 Δε (1 kHz, 20° C.): 2.7 PGP-2-2V 15.5 ε.sub.∥ (1 kHz, 20° C.): 5.5 PP-1-2V1 6.0 ε.sub.⊥ (1 kHz, 20° C.): 2.7 CC-3-V 52.0 γ.sub.1 (20° C.) [mPa s]: 49 CC-3-V1 3.5 k.sub.11 (20° C.) [pN]: 14.1 DLP-3-T 4.5 k.sub.33 (20° C.) [pN]: 14.0 Σ 100.0

[0392] This mixture, mixture M-9, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response times.

Example 10

[0393] The following mixture (M-10) is prepared and investigated.

TABLE-US-00018 Compound c [%] Property APUQU-2-F 4.0 T(N, I) [° C.]: 75.5 PPGU-3-F 0.5 Δn (589 nm, 20° C.): 0.1180 CLP-1V2-1 3.0 n.sub.e (589 nm, 20° C.): 1.6091 PGP-1-2V 6.5 n.sub.o (589 nm, 20° C.): 1.4911 PGP-2-2V 15.0 Δε (1 kHz, 20° C.): 2.4 PP-1-2V1 7.0 ε.sub.∥ (1 kHz, 20° C.): 5.1 CC-3-V 52.0 ε.sub.⊥ (1 kHz, 20° C.): 2.7 CC-3-V1 4.0 γ.sub.1 (20° C.) [mPa s]: 51 CLP-3-T 4.0 k.sub.11 (20° C.) [pN]: 15.5 DLP-3-T 4.0 k.sub.33 (20° C.) [pN]: 14.7 Σ 100.0

[0394] This mixture, mixture M-10, is characterized by a low γ.sub.1/k.sub.11 ratio, which

Example 11

[0395] The following mixture (M-11) is prepared and investigated.

TABLE-US-00019 Compound c [%] Property APUQU-2-F 4.0 T(N, I) [° C.]: 75.5 PPGU-3-F 0.5 Δn (589 nm, 20° C.): 0.1177 CLP-V2-1 3.0 n.sub.e (589 nm, 20° C.): 1.6083 PGP-1-2V 6.5 n.sub.o (589 nm, 20° C.): 1.4906 PGP-2-2V 15.0 Δε (1 kHz, 20° C.): 2.4 PP-1-2V1 7.0 ε.sub.∥ (1 kHz, 20° C.): 5.1 CC-3-V 52.0 ε.sub.⊥ (1 kHz, 20° C.): 2.7 CC-3-V1 4.0 γ.sub.1 (20° C.) [mPa s]: 48 CLP-3-T 4.0 k.sub.11 (20° C.) [pN]: 15.5 DLP-3-T 4.0 k.sub.33 (20° C.) [pN]: 14.3 Σ 100.0

[0396] This mixture, mixture M-11, is characterized by a low γ.sub.1/k.sub.11 ratio, which

Example 12

[0397] The following mixture (M-12) is prepared and investigated.

TABLE-US-00020 Compound c [%] Property CC-3-V 46.0 T(N, I) [° C.]: 77 CC-3-V1 5.5 Δn (589 nm, 20° C.): 0.1185 CCP-V-1 1.0 n.sub.e (589 nm, 20° C.): 1.6075 PGP-2-2V 12.0 n.sub.o (589 nm, 20° C.): 1.4890 PGP-3-2V 3.5 Δε (1 kHz, 20° C.): 2.9 PGU-2-F 4.5 ε.sub.∥ (1 kHz, 20° C.): 6.8 PGUQU-3-F 5.0 ε.sub.⊥ (1 kHz, 20° C.): 3.9 CLP-3-T 5.0 γ.sub.1 (20° C.) [mPa s]: 58 B(S)-2O-O4 3.5 k.sub.11 (20° C.) [pN]: 15.5 B(S)-2O-O5 3.5 k.sub.33 (20° C.) [pN]: 13.9 CC-3-2V1 1.0 DGUQU-4-F 1.5 CY-3-O2 2.5 CLP-V-1 3.5 DLP-3-T 2.0 Σ 100.0

[0398] This mixture, mixture M-12, is characterized by a superior transmission in an FFS display and shows a low γ.sub.1/k.sub.11 ratio, which is leading to short response time. It is very well suied for HB-FFS technology (HB-FFS Definition: LC mixture having a positive dielectric constant which contains materials with a negatic dielectric Anistropy).

Example 13

[0399] The following mixture (M-13) is prepared and investigated.

TABLE-US-00021 Compound c [%] Property CC-3-V 46.0 T(N, I) [° C.]: 74.5 CC-3-V1 5.5 Δn (589 nm, 20° C.): 0.1178 CCP-V-1 1.0 n.sub.e (589 nm, 20° C.): 1.6070 PGP-2-2V 12.0 n.sub.o (589 nm, 20° C.): 1.4892 PGP-3-2V 3.5 Δε (1 kHz, 20° C.): 3.4 PGU-2-F 4.5 ε.sub.∥ (1 kHz, 20° C.): 7.4 PGUQU-3-F 5.0 ε.sub.⊥ (1 kHz, 20° C.): 4.0 B(S)-2O-O4 3.5 γ.sub.1 (20° C.) [mPa s]: 58 B(S)-2O-O5 3.5 k.sub.11 (20° C.) [pN]: 15.2 CC-3-2V1 1.0 k.sub.33 (20° C.) [pN]: 13.4 DGUQU-4-F 1.5 CY-3-O2 2.5 CLP-V-1 3.5 DLP-3-T 7.0 Σ 100.0

[0400] This mixture, mixture M-13, is characterized by a superior transmission in an FFS display and shows a low γ.sub.1/k.sub.11 ratio, which is leading to short response times. It is very well suied for HB-FFS technology.

Example 14

[0401] The following mixture (M-14) is prepared and investigated.

TABLE-US-00022 Compound c [%] Property CC-3-V 43.0 T(N, I) [° C.]: 80 CC-3-V1 12.0 Δn (589 nm, 20° C.): 0.0990 CCP-V-1 12.0 n.sub.e (589 nm, 20° C.): 1.5862 CCP-V2-1 8.0 n.sub.o (589 nm, 20° C.): 1.4872 PGP-2-3 6.5 Δε (1 kHz, 20° C.): 2.6 PGUQU-3-F 4.5 ε.sub.∥ (1 kHz, 20° C.): 5.2 APUQU-3-F 3.0 ε.sub.⊥ (1 kHz, 20° C.): 2.6 PP-1-2V1 7.0 γ.sub.1 (20° C.) [mPa s]: 53 PPGU-3-F 0.5 k.sub.k1 (20° C.) [pN]: 15.2 DLP-3-T 3.5 k.sub.33 (20° C.) [pN]: 16.7 Σ 100.0

[0402] This mixture, mixture M-14, is characterized by a low γ.sub.1/k.sub.11 ratio, which

Example 15

[0403] The following mixture (M-15) is prepared and investigated.

TABLE-US-00023 Compound c [%] Property CC-3-V 45.5 T(N, I) [° C.]: 80 CC-3-V1 11.5 Δn (589 nm, 20° C.): 0.0994 CCP-V-1 8.0 n.sub.e (589 nm, 20° C.): 1.5855 CLP-V-1 7.0 n.sub.o (589 nm, 20° C.): 1.4861 PGP-2-3 7.0 Δε (1 kHz, 20° C.): 2.7 PGUQU-3-F 4.0 ε.sub.∥ (1 kHz, 20° C.): 5.3 APUQU-3-F 1.5 ε.sub.⊥ (1 kHz, 20° C.): 2.6 PP-1-2V1 5.5 γ.sub.1 (20° C.) [mPa s]: 51 PPGU-3-F 0.5 k.sub.11 (20° C.) [pN]: 16.2 CLP-3-T 4.5 k.sub.33 (20° C.) [pN]: 16.2 DLP-3-OT 5.0 Σ 100.0

[0404] This mixture, mixture M-15, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response times. It is very well suied for FFS technology.

Example 16

[0405] The following mixture (M-16) is prepared and investigated.

TABLE-US-00024 Compound c [%] Property CC-3-V 48.5 T(N, I) [° C.]: 81.5 CC-3-V1 10.0 Δn (589 nm, 20° C.): 0.0984 CCP-V-1 9.5 n.sub.e (589 nm, 20° C.): 1.5850 CLP-V-1 6.0 n.sub.o (589 nm, 20° C.): 1.4866 PGP-2-2V 9.0 Δε (1 kHz, 20° C.): 2.7 PGUQU-3-F 4.0 ε.sub.∥ (1 kHz, 20° C.): 5.3 APUQU-2-F 2.0 ε.sub.⊥ (1 kHz, 20° C.): 2.6 PP-1-2V1 2.5 γ.sub.1 (20° C.) [mPa s]: 52 PPGU-3-F 0.5 k.sub.11 (20° C.) [pN]: 15.6 CLP-3-T 4.5 k.sub.33 (20° C.) [pN]: 16.0 DLP-3-T 3.5 Σ 100.0

[0406] This mixture, mixture M-16, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response times.

Example 17

[0407] The following mixture (M-17) is prepared and investigated.

TABLE-US-00025 Compound c [%] Property CC-3-V 45.5 T(N, I) [° C.]: 81.5 CC-3-V1 11.5 Δn (589 nm, 20° C.): 0.1001 CCP-V-1 9.5 n.sub.e (589 nm, 20° C.): 1.5869 CLP-V-1 7.0 n.sub.o (589 nm, 20° C.): 1.4868 PGP-2-3 8.0 Δε (1 kHz, 20° C.): 2.7 PGUQU-3-F 4.0 ε.sub.∥ (1 kHz, 20° C.): 5.3 APUQU-3-F 2.0 ε.sub.⊥ (1 kHz, 20° C.): 2.6 PP-1-2V1 4.0 γ.sub.1 (20° C.) [mPa s]: 51 PPGU-3-F 0.5 k.sub.11 (20° C.) [pN]: 16.3 CLP-3-T 4.5 k.sub.33 (20° C.) [pN]: 16.6 DLP-3-T 3.5 Σ 100.0

[0408] This mixture, mixture M-17, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response times.

Example 18

[0409] The following mixture (M-18) is prepared and investigated.

TABLE-US-00026 Compound c [%] Property CC-3-V 32.5 T(N, I) [° C.]: 78 CC-3-V1 12.0 Δn (589 nm, 20° C.): 0.0978 CC-3-2V1 10.5 n.sub.e (589 nm, 20° C.): 1.5802 CCP-V-1 8.0 n.sub.o (589 nm, 20° C.): 1.4824 CCP-V2-1 2.5 Δε (1 kHz, 20° C.): 2.9 PGP-2-2V 7.0 ε.sub.∥ (1 kHz, 20° C.): 6.5 APUQU-2-F 6.0 ε.sub.⊥ (1 kHz, 20° C.): 3.6 APUQU-3-F 4.5 γ.sub.1 (20° C.) [mPa s]: 63 CY-5-02 5.5 k.sub.11 (20° C.) [pN]: 15.4 B-2O-O5 3.5 k.sub.33 (20° C.) [pN]: 15.8 PP-1-2V1 2.5 PPGU-3-F 0.5 DLP-3-OT 5.0 Σ 100.0

[0410] This mixture, mixture M-18, is characterized by a superior transmission in an FFS display and shows a low γ.sub.1/k.sub.11 ratio, which is leading to short response times. It is very well suied for HB-FFS technology.

Example 19

[0411] The following mixture (M-19) is prepared and investigated.

TABLE-US-00027 Compound c [%] Property CDUQU-3-F 3.5 T(N, I) [° C.]: 98.5 CPGP-5-2 1.5 Δn (589 nm, 20° C.): 0.1094 DGUQU-4-F 4.5 n.sub.e (589 nm, 20° C.): 1.5952 PGUQU-3-F 3.0 n.sub.o (589 nm, 20° C.): 1.4858 PGUQU-4-F 4.0 Δε (1 kHz, 20° C.): 5.7 CCP-30CF3 4.5 ε.sub.∥ (1 kHz, 20° C.): 8.6 CCP-V-1 10.5 ε.sub.⊥ (1 kHz, 20° C.): 2.9 CCP-V2-1 9.0 γ.sub.1 (20° C.) [mPa s]: 84 PGP-2-2V 7.0 k.sub.11 (20° C.) [pN]: 18.6 CC-3-2V1 8.0 k.sub.33 (20° C.) [pN]: 19.2 CC-3-V 26.0 CC-3-V1 9.5 PP-1-2V1 4.0 DLP-3-T 5.0 Σ 100.0

[0412] This mixture, mixture M-19, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response times. It is very well suied for FFS technology.

Example 20

[0413] The following mixture (M-20) is prepared and investigated.

TABLE-US-00028 Compound c [%] Property CDUQU-3-F 3.5 T(N, I) [° C.]: 98.5 CPGP-5-2 1.5 Δn (589 nm, 20° C.): 0.1096 DGUQU-4-F 4.5 n.sub.e (589 nm, 20° C.): 1.5947 PGUQU-3-F 3.5 n.sub.o (589 nm, 20° C.): 1.4851 PGUQU-4-F 4.0 Δε (1 kHz, 20° C.): 5.7 CCP-30CF3 5.5 ε.sub.∥ (1 kHz, 20° C.): 8.5 CCP-V-1 10.5 ε.sub.⊥ (1 kHz, 20° C.): 2.9 CCP-V2-1 7.5 γ.sub.1 (20° C.) [mPa s]: 82 PGP-2-2V 7.0 k.sub.11 (20° C.) [pN]: 18.0 CC-3-2V1 8.0 k.sub.33 (20° C.) [pN]: 18.9 CC-3-V 26.0 CC-3-V1 9.5 PP-1-2V1 4.0 DLP-3-OT 5.0 Σ 100.0

[0414] This mixture, mixture M-20, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response times. It is very well suied for FFS technology.

Example 21

[0415] The following mixture (M-21) is prepared and investigated.

TABLE-US-00029 Compound c [%] Property CDUQU-3-F 8.5 T(N, I) [° C.]: 92 DGUQU-4-F 5.0 Δn (589 nm, 20° C.): 0.1113 DPGU-4-F 3.5 n.sub.e (589 nm, 20° C.): 1.5964 PGUQU-4-F 8.0 n.sub.o (589 nm, 20° C.): 1.4851 DLG-3-T 4.5 Δε (1 kHz, 20° C.): 8.8 CCP-V-1 7.0 ε.sub.∥ (1 kHz, 20° C.): 12.0 CCP-V2-1 7.0 ε.sub.⊥ (1 kHz, 20° C.): 3.2 PGP-2-2V 6.0 γ.sub.1 (20° C.) [mPa s]: 87 CC-3-2V1 8.0 k.sub.11 (20° C.) [pN]: 17.6 CC-3-V 27.0 k.sub.33 (20° C.) [pN]: 17.6 CC-3-V1 10.0 PP-1-2V1 5.5 Σ 100.0

[0416] This mixture, mixture M-21, is characterized by a low γ.sub.1/k.sub.11 ratio, which

Example 22

[0417] The following mixture (M-22) is prepared and investigated.

TABLE-US-00030 Compound c [%] Property CC-3-V 45.5 T(N, I) [° C.]: 81 CC-3-V1 11.5 Δn (589 nm, 20° C.): 0.0997 CCP-V-1 9.5 n.sub.e (589 nm, 20° C.): 1.5867 CLP-V-1 7.0 n.sub.o (589 nm, 20° C.): 1.4870 PGP-2-3 8.5 Δε (1 kHz, 20° C.): 2.7 PGUQU-3-F 3.5 ε.sub.∥ (1 kHz, 20° C.): 5.4 APUQU-3-F 2.0 ε.sub.⊥ (1 kHz, 20° C.): 2.6 PP-1-2V1 4.0 γ.sub.1 (20° C.) [mPa s]: 52 PPGU-3-F 0.5 .sub.11 (20° C.) [pN]: 16.2 CLP-3-T 4.5 k.sub.33 (20° C.) [pN]: 16.2 DLG-3-T 3.5 Σ 100.0

[0418] This mixture, mixture M-22, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response times.

Example 23

[0419] The following mixture (M-23) is prepared and investigated.

TABLE-US-00031 Compound c [%] Property CC-3-V 44.0 T(N, I) [° C.]: 78.5 CC-3-V1 11.5 Δn (589 nm, 20° C.): 0.0992 CCP-V-1 11.0 n.sub.e (589 nm, 20° C.): 1.5854 CCP-V2-1 9.0 n.sub.o (589 nm, 20° C.): 1.4862 PGP-2-3 6.5 Δε (1 kHz, 20° C.): 2.7 PGUQU-3-F 5.0 ε.sub.∥ (1 kHz, 20° C.): 5.3 APUQU-3-F 1.5 ε.sub.⊥ (1 kHz, 20° C.): 2.6 PP-1-2V1 7.0 γ.sub.1 (20° C.) [mPa s]: 53 PPGU-3-F 0.5 k.sub.11 (20° C.) [pN]: 15.0 DLG-3-T 4.0 k.sub.33 (20° C.) [pN]: 16.3 Σ 100.0

[0420] This mixture, mixture M-23, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response times.

Example 24

[0421] The following mixture (M-24) is prepared and investigated.

TABLE-US-00032 Compound c [%] Property CC-3-V 45.0 T(N, I) [° C.]: 80 CC-3-V1 9.0 Δn (589 nm, 20° C.): 0.0995 CCP-V-1 11.0 n.sub.e (589 nm, 20° C.): 1.5865 CCP-V2-1 8.5 n.sub.o (589 nm, 20° C.): 1.4870 PGP-2-3 7.5 Δε (1 kHz, 20° C.): 2.6 PGUQU-3-F 4.0 ε.sub.∥ (1 kHz, 20° C.): 5.3 APUQU-3-F 2.0 ε.sub.⊥ (1 kHz, 20° C.): 2.6 PP-1-2V1 6.5 γ.sub.1 (20° C.) [mPa s]: 52 PPGU-3-F 0.5 k.sub.11 (20° C.) [pN]: 15.4 DLG-3-T 3.5 k.sub.33 (20° C.) [pN]: 16.3 CLP-3-T 2.5 Σ 100.0

[0422] This mixture, mixture M-24, is characterized by a low γ.sub.1/k.sub.11 ratio, which is leading to short response times.