LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

• US 20180163133A1
• Filed: 12/05/2017
• Published: 06/14/2018
• Est. Priority Date: 12/08/2016
• 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: Saito, Masayuki
• Granted Patent: US 10,640,709 B2
• Time in Patent Office: Days
• CPC Class Codes: C09K 19/0208 Twisted Nematic (T.N.); Super Twisted Nematic (S.T.N.); Optical Mode Interference (O.M.I.)
• CPC Class Codes: C09K 19/0216 Super Birefringence Effect (S.B.E.); Electrically Controlled Birefringence (E.C.B.)
• CPC Class Codes: C09K 19/3001 Cyclohexane rings
• 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 19/3066 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 19/586 Optically active dopants; chiral dopants
• CPC Class Codes: C09K 19/588 Heterocyclic compounds
• CPC Class Codes: C09K 2019/0466 the linking chain being a -CF2O- chain
• CPC Class Codes: C09K 2019/122 Ph-Ph
• CPC Class Codes: C09K 2019/123 Ph-Ph-Ph
• CPC Class Codes: C09K 2019/3004 Cy-Cy
• CPC Class Codes: C09K 2019/3009 Cy-Ph
• CPC Class Codes: C09K 2019/301 Cy-Cy-Ph
• CPC Class Codes: C09K 2019/3015 Cy-Cy-Ph-Cy
• CPC Class Codes: C09K 2019/3016 Cy-Ph-Ph
• CPC Class Codes: C09K 2019/3019 Cy-Cy-Ph-Ph
• CPC Class Codes: C09K 2019/3021 Cy-Ph-Ph-Cy
• CPC Class Codes: C09K 2019/3025 Cy-Ph-Ph-Ph
• CPC Class Codes: C09K 2019/3027 : Compounds comprising 1,4-cyclohexylene and 2,3-difluoro-1,4-phenylene
• CPC Class Codes: C09K 2019/3042 : Cy-Cy-C2H4-Ph-Ph
• CPC Class Codes: C09K 2019/3071 : Cy-Cy-COO-Cy
• CPC Class Codes: C09K 2019/3075 : Cy-COO-Ph
• CPC Class Codes: C09K 2019/3077 : Cy-Cy-COO-Ph
• CPC Class Codes: C09K 2019/3078 : Cy-Cy-COO-Ph-Cy
• CPC Class Codes: C09K 2019/3083 : Cy-Ph-COO-Ph
• CPC Class Codes: C09K 2019/323 : containing a binaphthyl
• CPC Class Codes: C09K 2019/3422 : the heterocyclic ring being a six-membered ring
• CPC Class Codes: G02F 1/1362 : Active matrix addressed cells G02F1/134336, G02F1/134363 take precedence
• CPC Class Codes: G02F 1/13706 : the liquid crystal having positive dielectric anisotropy
• CPC Class Codes: G02F 1/13712 : the liquid crystal having negative dielectric anisotropy

Abstract

Provided are a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large dielectric anisotropy and a short helical pitch, or the liquid crystal composition having a suitable balance regarding at least two of the characteristics; and an AM device including the composition. The liquid crystal composition contains a specific optically active compound as an additive, and a specific compound having high maximum temperature or small viscosity as a first component, and may contain a specific compound having positive dielectric anisotropy as a second component, or a specific compound having negative dielectric anisotropy as a third component.

Claims

1. A liquid crystal composition that has a nematic phase, and contains at least one compound selected from the group of optically active compounds each having an octahydro binaphthalene skeleton or a binaphthalene skeleton represented by formula (1) and formula (2) as an additive, and at least one compound selected from the group of compounds represented by formula (3) as a first component:

2. The liquid crystal composition according to claim 1, containing at least one compound selected from the group of optically active compounds represented by formula (1-1) to formula (1-6) and formula (2-1) to formula (2-3) as the additive:

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

4. The liquid crystal composition according to claim 1, wherein a proportion of the additive is in the range of 0.01% by weight to 5% by weight, and a proportion of the first component is in the range of 10% by weight to 85% by weight.

5. The liquid crystal composition according to claim 1, containing at least one compound selected from the group of compounds represented by formula (4) 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 (4-1) to formula (4-35) 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 85% by weight.

8. The liquid crystal composition according to claim 1, containing at least one compound selected from the group of compounds represented by formula (5) 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 formula (5-1) to formula (5-22) as the third component:

10. The liquid crystal composition according to claim 8, wherein a proportion of the third component is in the range of 3% by weight to 25% by weight.

11. The liquid crystal composition according to claim 5, containing at least one compound selected from the group of compounds represented by formula (5) as a third component:

12. The liquid crystal composition according to claim 1, wherein a maximum temperature of a nematic phase is 70°

C. or higher, an optical anisotropy measured at 25°

C. at a wavelength of 589 nanometers is 0.07 or more and dielectric anisotropy measured at 25°

C. at a frequency of 1 kHz is 2 or more.

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

14. The liquid crystal display device according to claim 13 , wherein an operating mode in the liquid crystal display device is a TN mode, an ECB mode, an OCB mode, an IPS mode, an FFS mode or an FPA mode, and a driving mode in the liquid crystal display device is an active matrix mode.