Liquid crystal composition and liquid crystal display device

• US 9,714,383 B2
• Filed: 06/09/2014
• Issued: 07/25/2017
• Est. Priority Date: 08/01/2013
• Status: Active Grant

• Current Assignee: JNC Corporation (Chisso Corporation), JNC Petrochemical Corporation (Chisso Corporation)
• Original Assignee: JNC Corporation (Chisso Corporation), JNC Petrochemical Corporation (Chisso Corporation)
• Inventors: Kurihara, Eriko, Hirata, Kenji, Saito, Masayuki, Furusato, Yoshimasa
• Primary Examiner(s): Visconti, Geraldina
• Application Number:
  US14/903,056
• Publication Number:
  US 20160137922A1
• Time in Patent Office: 1,142 Days
• Field of Search: 25229901, 2522996, 25229961, 428 11
• CPC Class Codes: C07C 25/18 Polycyclic aromatic halogenated hydrocarbons
• CPC Class Codes: C07C 43/225 containing halogen
• CPC Class Codes: C07C 43/29 containing halogen
• CPC Class Codes: C07D 309/06 Radicals substituted by oxygen atoms
• CPC Class Codes: C07D 319/06 not condensed with other rings
• CPC Class Codes: C09K 19/12 at least two benzene rings directly linked, e.g. biphenyls
• CPC Class Codes: C09K 19/3003 Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
• CPC Class Codes: C09K 19/3402 having oxygen as hetero atom sugars C09K19/0422
• CPC Class Codes: C09K 19/542 Macromolecular compounds
• CPC Class Codes: C09K 2019/0466 the linking chain being a -CF2O- chain
• CPC Class Codes: C09K 2019/124 Ph-Ph-Ph-Ph
• CPC Class Codes: C09K 2019/3025 Cy-Ph-Ph-Ph
• CPC Class Codes: C09K 2019/3422 the heterocyclic ring being a six-membered ring
• CPC Class Codes: C09K 2019/548 stabilizing the alignment; Polymer stabilized alignment

Abstract

A liquid crystal composition having a suitable balance regarding at least one or two of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large positive dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat or a large elastic constant; and an AM device having a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio or a long service life. The composition has positive dielectric anisotropy and contains a specific compound having high stability to ultraviolet light as a first component, and a liquid crystal display device includes the composition.

Claims

1. A liquid crystal composition that has a positive dielectric anisotropy, and contains at least one compound selected from the group of compounds represented by formula (1) as a first component:

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

3. The liquid crystal composition according to claim 1, containing at least one compound selected from the group of compounds represented by formulas (1-1-1) to (1-1-9), formula (1-2-1) and formula (1-2-2) as the first component:

4. The liquid crystal composition according to claim 1, wherein a ratio of the first component is in the range of 0.03% by weight to 10% by weight based on the weight of the liquid crystal composition.

5. The liquid crystal composition according to claim 1, containing at least one compound selected from the group of compounds represented by formula (2) 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 formulas (2-1) to (2-27) as the second component:

7. The liquid crystal composition according to claim 5, wherein a ratio of the second component is in the range of 10% by weight to 85% by weight based on the weight of the liquid crystal composition.

8. The liquid crystal composition according to claim 1, further containing at least one compound selected from the group of compounds represented by formula (3) as a third component:

9. The liquid crystal composition according to claim 8, containing at least one compound selected from the group of compounds represented by formulas (3-1) to (3-13) as the third component:

10. The liquid crystal composition according to claim 8, wherein a ratio of the third component is in the range of 5% by weight to 70% by weight based on the weight of the liquid crystal composition.

11. The liquid crystal composition according to claim 1, containing at least one polymerizable compound selected from the group of compounds represented by formula (4) as an additive component:

12. The liquid crystal composition according to claim 11, wherein, in formula (4) described in claim 11, P¹, P² and P³ are independently a polymerizable group selected from the group of groups represented by formulas (P-1) to (P-5):

13. The liquid crystal composition according to claim 11, containing at least one polymerizable compound selected from the group of compounds represented by formulas (4-1) to (4-27) as the additive component:

14. The liquid crystal composition according to claim 11, wherein a ratio of addition of the additive component is in the range of 0.03% by weight to 10% by weight, based on the weight of the liquid crystal composition before adding an additive thereto.

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

19. The liquid crystal display device according to claim 18, wherein an operating mode in the liquid crystal display device is an IPS mode, a VA mode, an FFS mode or an FPA mode, and a driving mode in the liquid crystal display device is an active matrix mode.

20. A polymer sustained alignment mode liquid crystal display device, wherein the liquid crystal display device includes the liquid crystal composition according to claim 11, and a polymerizable compound in the composition is polymerized.

15. A compound represented by formula (1):

16. The compound according to claim 15, represented by any one of formulas (1-1) to (1-3):

17. The compound according to claim 15, represented by any one of formulas (1-1-1) to (1-1-9), formula (1-2-1) and formula (1-2-2):