Liquid crystal composition and liquid crystal display device

• US 10,442,993 B2
• Filed: 11/09/2017
• Issued: 10/15/2019
• Est. Priority Date: 11/10/2016
• Status: Active Grant

• Current Assignee: JNC Corporation (Chisso Corporation), JNC Petrochemical Corporation (Chisso Corporation)
• Original Assignee: JNC Corporation (Chisso Corporation)
• Inventors: Saito, Masayuki
• Primary Examiner(s): Kelly, Cynthia H
• Assistant Examiner(s): Malloy, Anna
• Application Number:
  US15/808,846
• Publication Number:
  US 20180127651A1
• Time in Patent Office: 705 Days
• Field of Search: None
• CPC Class Codes: C07C 13/28 Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof
• CPC Class Codes: C07C 2601/18 with a ring being at least seven-membered
• CPC Class Codes: C09K 19/06 Non-steroidal liquid crystal compounds
• CPC Class Codes: C09K 19/08 containing at least two non-condensed rings
• CPC Class Codes: C09K 19/30 containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
• CPC Class Codes: C09K 19/3001 Cyclohexane rings
• CPC Class Codes: C09K 19/3066 in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers
• CPC Class Codes: C09K 19/3068 chain containing -COO- or -OCO- groups
• CPC Class Codes: C09K 19/3402 having oxygen as hetero atom sugars C09K19/0422
• CPC Class Codes: C09K 19/52 characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
• CPC Class Codes: C09K 19/54 Additives having no specific mesophase characterised by their chemical composition
• CPC Class Codes: C09K 19/542 Macromolecular compounds
• CPC Class Codes: C09K 2019/0448 the end chain group being a polymerizable end group, e.g. -Sp-P or acrylate
• CPC Class Codes: C09K 2019/122 Ph-Ph
• CPC Class Codes: C09K 2019/123 Ph-Ph-Ph
• CPC Class Codes: C09K 2019/3009 Cy-Ph
• CPC Class Codes: C09K 2019/301 Cy-Cy-Ph
• CPC Class Codes: C09K 2019/3027 Compounds comprising 1,4-cyclohexylene and 2,3-difluoro-1,4-phenylene
• CPC Class Codes: C09K 2019/3036 Cy-C2H4-Ph
• CPC Class Codes: C09K 2019/3422 the heterocyclic ring being a six-membered ring
• CPC Class Codes: C09K 2019/3425 : Six-membered ring with oxygen(s) in fused, bridged or spiro ring systems
• CPC Class Codes: C09K 2019/548 : stabilizing the alignment; Polymer stabilized alignment
• CPC Class Codes: G02F 1/133742 : for homeotropic alignment
• CPC Class Codes: G02F 1/133788 : by light irradiation, e.g. linearly polarised light photo-polymerisation
• CPC Class Codes: G02F 1/1362 : Active matrix addressed cells G02F1/134336, G02F1/134363 take precedence

Abstract

A liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy and large dielectric anisotropy, or having a suitable balance regarding at least two of the characteristics. The liquid crystal composition contains a quencher as a first additive, and may contain a specific compound having large negative dielectric anisotropy as a first component, a specific compound having high maximum temperature or small viscosity as a second component, or a specific compound having a polymerizable group as a second additive.

Claims

1. A liquid crystal composition that contains a compound represented by formula (1) as a first additive and at least one compound represented by formula (2) as a first component, and has a nematic phase and negative dielectric anisotropy:

2. The liquid crystal composition according to claim 1, wherein a proportion of the first additive is in the range of 0.005% by weight to 2% by weight.

3. The liquid crystal composition according to claim 1, containing at least one compound selected from the group of compounds represented by formula (2-1) to formula (2-22) as the first component:

4. The liquid crystal composition according to claim 1, wherein a proportion of the first component is in the range of 10% by weight to 90% by weight.

5. The liquid crystal composition according to claim 1, containing at least one compound represented by formula (3) as a second component:

6. The liquid crystal composition according to claim 5, containing at least one compound selected from the group of compounds represented by formula (3-1) to formula (3-13) as the second component:

7. The liquid crystal composition according to claim 5, wherein a proportion of the second component is in the range of 10% by weight to 90% by weight.

8. The liquid crystal composition according to claim 1, containing at least one compound represented by formula (4) as a second additive:

9. The liquid crystal composition according to claim 8, wherein, in formula (4), P¹, P² and P³ are independently a group selected from the group of polymerizable groups represented by formula (P-1) to formula (P-5):

10. The liquid crystal composition according to claim 8, containing at least one compound selected from the group of polymerizable compounds represented by formula (4-1) to formula (4-27) as the second additive:

11. The liquid crystal composition according to claim 8, wherein a proportion of the second additive is in the range of 0.03% by weight to 10% by weight.

12. A liquid crystal display device, including the liquid crystal composition according to claim 1.

13. The liquid crystal display device according to claim 12, wherein an operating mode in the liquid crystal display device includes an IPS mode, a VA mode, an FFS mode or an FPA mode, and a driving mode in the liquid crystal display device includes an active matrix mode.

14. A polymer sustained alignment mode liquid crystal display device, wherein the liquid crystal display device includes the liquid crystal composition according to claim 8, and a polymerizable compound in the liquid crystal composition is polymerized.

15. The liquid crystal composition according to claim 5, containing at least one compound represented by formula (4) as a second additive: