Compound, liquid crystal composition including the same, and liquid crystal display device including the same

Patent metadata

Field	Value
Publication number	US-9862886-B2
Application number	US-201615184212-A
Country	US
Kind code	B2
Filing date	Jun 16, 2016
Priority date	Jun 22, 2015
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

An exemplary embodiment of the present invention provides a compound represented by Chemical Formula 1:

wherein, in Chemical Formula 1, n is 0, 1, or 2, and a substituent represented by X is F, Cl, CF 3 , CF 2 CF 3 CHF 2 , CH 2 F, OCF 3 , CN, NCS, or a C1 to C5 alkyl including 1 to 3 fluoro substituents and a CH 2 group independently substituted with one or more oxygen atoms; (R 1 ) is hydrogen or a C1 to C15 alkyl, at least one CH 2 group being independently replaced with —C≡C—, —CF 2 O—, —CH═CH—, —O—, —CO—O—, —O—CO—, or —O—CO—O— in a way that oxygen atoms are directly connected to each other, and 1 to 3 hydrogen atoms of the C1 to C15 alkyl being replaced with halogen; (F) indicates that a fluoro is optionally substituted in place of a hydrogen, and

each of

is independently

First claim

What is claimed is:

1. A compound represented by Chemical Formula 1:

wherein, in Chemical Formula 1, n is 0, 1, or 2, and a substituent represented by “X” is F, Cl, CF 3 , CF 2 CF 3 , CHF 2 , CH 2 F, OCF 3 , CN, NCS, or a C1 to C5 alkyl including 1 to 3 fluoro substituents and a CH 2 group independently substituted with one or more oxygen atoms;
(R 1 ) is hydrogen or a C1 to C15 alkyl, at least one CH 2 group being independently replaced with —C≡C—, —CF 2 O—, —CH═CH—, —O—, —CO—O—, —O—CO—, or —O—CO—O— in a way that oxygen atoms are directly connected to each other, and 1 to 3 hydrogen atoms of the C1 to C15 alkyl being replaced with a halogen;
(F) indicates that a fluoro is optionally substituted in place of a hydrogen; and
each of

are independently

2. The compound of claim 1 , wherein the compound represented by Chemical Formula 1 comprises one or more compound represented by Chemical Formula 1-1 to Chemical Formula 1-14:

3. A liquid crystal composition comprising
a compound represented by Chemical Formula 1:

wherein, in Chemical Formula 1, n is 0, 1, or 2, and a substituent represented by X is F, Cl, CF 3 , CF 2 CF 3 , CHF 2 , CH 2 F, OCF 3 , CN, NCS, or a C1 to C5 alkyl including 1 to 3 fluoro substituents and a CH 2 group independently substituted with one or more oxygen atoms;
(R 1 ) is hydrogen or a C1 to C15 alkyl, at least one CH 2 group being independently replaced with —C≡C—, —CF 2 O—, —CH═CH—, —O—, —CO—O—, —O—CO—, or —O—CO—O— in a way that oxygen atoms are directly connected to each other, and 1 to 3 hydrogen atoms of the C1 to C15 alkyl being replaced with halogen;
(F) indicates that a fluoro is optionally substituted in place of hydrogen; and
each of

is independently

wherein (F) indicates that a fluoro is optionally substituted in place of a hydrogen.

4. The liquid crystal composition of claim 3 , wherein the compound represented by Chemical Formula 1 comprises one or more compounds represented by Chemical Formula 1-1 to Chemical Formula 1-14:

5. The liquid crystal composition of claim 3 , wherein a content of the compound represented by Chemical Formula 1 is in a range of about 1 wt % to about 30 wt % of the total weight of the liquid crystal composition.

6. The liquid crystal composition of claim 3 , wherein the liquid crystal composition further comprises one or more of the compound represented by Chemical Formula 2:

wherein, in Chemical Formula 2, R 1 and R 2 independently indicate C1 to C12 alkyl, C1 to C12 alkoxy, or C2 to C12 alkenyl.

7. The liquid crystal composition of claim 6 , wherein a content of the compound represented by Chemical Formula 2 is in a range of about 5 wt % to about 60 wt % of the total weight of the liquid crystal composition.

8. The liquid crystal composition of claim 3 , wherein the liquid crystal composition further comprises one or more of the compound represented by Chemical Formula 3:

wherein each of

is independently

wherein (F) indicates that a fluoro is optionally substituted in place of a hydrogen, and
R 3 and R 4 independently indicate C1 to C12 alkyl, C1 to C12 alkoxy, or C2 to C12 alkenyl.

9. The liquid crystal composition of claim 8 , wherein a content of the compound represented by Chemical Formula 3 is in a range of about 1 wt % to about 40 wt % of the total weight of the liquid crystal composition.

10. The liquid crystal composition of claim 3 , wherein the liquid crystal composition further comprises one or more of the compound represented by Chemical Formula 4:

wherein each of

is independently

R 5 indicates C1 to C12 alkyl, C1 to C12 alkoxy, or C2 to C12 alkenyl, and
(F) indicates that a fluoro is optionally substituted in place of a hydrogen.

11. The liquid crystal composition of claim 10 , wherein a content of the compound represented by Chemical Formula 4 is in a range of about 1 wt % to about 40 wt % of the total weight of the liquid crystal composition.

12. The liquid crystal composition of claim 3 , wherein the liquid crystal composition further comprises one or more of the compound represented by Chemical Formula 5:

wherein R 6 indicates C1 to C12 alkyl, C1 to C12 alkoxy, or C2 to C12 alkenyl.

13. The liquid crystal composition of claim 12 , wherein a content of the compound represented by Chemical Formula 5 is in a range of about 1 wt % to about 15 wt % of the total weight of the liquid crystal composition.

14. A liquid crystal display comprising:
a first insulation substrate;
a thin film transistor disposed on the first insulation substrate;
a first electrode connected to the thin film transistor;
a second electrode disposed on the first insulation substrate while being insulated from the first electrode;
a second insulation substrate configured to face the first insulation substrate; and
a liquid crystal layer disposed between the first insulation substrate and the second insulation substrate,
wherein the liquid crystal layer comprises a liquid crystal composition comprising a compound represented by Chemical Formula 1:

wherein, in Chemical Formula 1, n is 0, 1, or 2, and a substituent represented by X is F, Cl, CF 3 , CF 2 CF 3 , CHF 2 , CH 2 F, OCF 3 , CN, NCS, or a C1 to C5 alkyl including 1 to 3 fluoro substituents and a CH 2 group independently substituted with one or more oxygen atoms;
(R 1 ) is hydrogen or a C1 to C15 alkyl, at least one CH 2 group being independently replaced with —C≡C—, —CF 2 O—, —CH—CH—, —O—, —CO—O—, —O—CO—, or —O—CO—O— in a way that oxygen atoms are directly connected to each other, and 1 to 3 hydrogen atoms of the C1 to C15 alky

Assignees

• Samsung Display Co Ltd

Inventors

• Jang Hye Lim
• Shin Beom-Soo
• Kim Si Heun
• Oh Keun Chan
• Kim Bong Hee
• Lee Sun Hee

Classifications

• C09K2019/301

  Cy-Cy-Ph · CPC title

• C09K2019/0466

  the linking chain being a -CF2O- chain · CPC title

• C07C43/225

  containing halogen · CPC title

• C09K19/12

  at least two benzene rings directly linked, e.g. biphenyls · CPC title

• C09K19/3066

  in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers · CPC title