Liquid crystal display and liquid crystal composition comprised thereof

• US 10,459,292 B2
• Filed: 04/21/2017
• Issued: 10/29/2019
• Est. Priority Date: 08/11/2016
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Park, Joon Hyung, Park, Kyung Hae, Son, Jong Ho, Lee, Jin Hyeong, Jang, Hye Lim
• Primary Examiner(s): Kelly, Cynthia H
• Assistant Examiner(s): Malloy, Anna
• Application Number:
  US15/494,038
• Publication Number:
  US 20180046033A1
• Time in Patent Office: 921 Days
• Field of Search: None
• CPC Class Codes: C09K 19/065 containing one non-condensed unsaturated non-aromatic ring, e.g. cyclohexene ring
• CPC Class Codes: C09K 19/3001 Cyclohexane rings
• CPC Class Codes: C09K 19/3098 Unsaturated non-aromatic rings, e.g. cyclohexene rings
• CPC Class Codes: C09K 19/32 containing condensed ring systems, i.e. fused, bridged or spiro ring systems
• CPC Class Codes: C09K 19/56 Aligning agents
• CPC Class Codes: C09K 2019/3004 Cy-Cy
• CPC Class Codes: C09K 2019/3009 Cy-Ph
• CPC Class Codes: C09K 2019/3027 Compounds comprising 1,4-cyclohexylene and 2,3-difluoro-1,4-phenylene
• CPC Class Codes: G02F 1/00 Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133711 by organic films, e.g. polymeric films
• CPC Class Codes: G02F 1/13394 spacers regularly patterned on the cell subtrate, e.g. walls, pillars G02F1/133377 takes precedence
• CPC Class Codes: G02F 1/13398 Spacer materials; Spacer properties
• CPC Class Codes: G02F 2202/023 curable

Abstract

A liquid crystal display includes a first substrate, a second substrate opposing the first substrate, an electrode portion provided on at least one of the first and second substrates, and a liquid crystal layer provided between the first substrate and the second substrate and including a liquid crystal composition. The liquid crystal composition includes a liquid crystal compound including a cyclohexenylene group, and provides the liquid crystal display with low rotary viscosity and high voltage holding ratio.

Claims

1. A liquid crystal display comprising:

a first substrate;

a second substrate opposing the first substrate;

an electrode portion provided on at least one of the first and second substrates; and

a liquid crystal layer provided between the first substrate and the second substrate and including a liquid crystal composition,

wherein the liquid crystal composition comprises at least one of liquid crystal compounds represented by the following Chemical Formula 1, at least one of liquid crystal compounds represented b the following Chemical Formula 2 and at least one of liquid crystal compounds represented by the following Chemical Formulae 5-4 to 5-8;

2. The liquid crystal display of claim 1, wherein the liquid crystal compound of Chemical Formula 1 is present in an amount exceeding 0 wt % but less than 15 wt % based on a total weight of the liquid crystal composition.

3. The liquid crystal display of claim 1, wherein the liquid crystal compound of Chemical Formula 1 includes at least one of liquid crystal compounds represented by the following Chemical Formula 1-1:

4. The liquid crystal display of claim 3, wherein the liquid crystal compound of Chemical Formula 1-1 includes at least one of liquid crystal compounds represented by the following Chemical Formulae 1-1-1 to 1-1-5:

5. The liquid crystal display of claim 1, wherein the liquid crystal compound represented by Chemical Formula 1 includes at least one of liquid crystal compounds represented by the following Chemical Formulae 1-2 and 1-3:

6. The liquid crystal display of claim 5, wherein the liquid crystal compound of Chemical Formula 1-2 includes at least one of liquid crystal compounds represented by Chemical Formulae 1-2-1 and 1-2-2, and

the liquid crystal compound of Chemical Formula 1-3 includes at least one of liquid crystal compounds represented by the following Chemical Formulae 1-3-1 and 1-3-2:

7. The liquid crystal display of claim 5, wherein the liquid crystal compound of Chemical Formula 1-2 includes at least one of liquid crystal compounds represented by the following Chemical Formulae 1-2-4 and 1-2-5, and

the liquid crystal compound of Chemical Formula 1-3 includes at least one of liquid crystal compounds represented by the following Chemical Formulae 1-3-4 and 1-3-5:

8. The liquid crystal display of claim 5, wherein the liquid crystal compound of Chemical Formula 1-2 includes at least one of liquid crystal compounds represented by the following Chemical Formulae 1-2-6 to 1-2-11, and

the liquid crystal compound of Chemical Formula 1-3 includes at least one of liquid crystal compounds represented by Chemical Formulae 1-3-6 to 1-3-12:

9. The liquid crystal display of claim 1, wherein the liquid crystal composition comprises at least one of liquid crystal compounds represented by the following Chemical Formula 3:

10. The liquid crystal display of claim 9, wherein any combination of the liquid crystal compound of Chemical Formula 1 and at least one of the liquid crystal compound of Chemical Formula 2 and the liquid crystal compound of Chemical Formula 3, is present in an amount exceeding 0 wt % but less than 15 wt % based on a total weight of the liquid crystal composition.

11. The liquid crystal display of claim 1, further comprising an alignment layer provided between the first substrate and the liquid crystal layer and between the second substrate and the liquid crystal layer,

wherein the alignment layer includes a polymer obtained by polymerizing a monomer represented by the following Chemical Formula 4:

12. The liquid crystal display of claim 11, wherein the polymer obtained by polymerizing the monomer represented by Chemical Formula 4 includes an oxime or acetophenone photoinitiator.

13. The liquid crystal display of claim 1, further comprising a spacer between the first substrate and the second substrate,

wherein the spacer is an organic polymer material including an oxime or acetophenone photoinitiator.

14. The liquid crystal display of claim 1, further comprising a color filter provided on one of the first and second substrates and displaying color,

wherein the color filter is an organic polymer material including an oxime or acetophenone photoinitiator.

15. The liquid crystal display of claim 1, further comprising a black matrix provided on one of the first and second substrates and blocking transmitted light,

wherein the black matrix includes an organic polymer material including an oxime or acetophenone photoinitiator.

16. The liquid crystal display of claim 1, further comprising an encapsulant provided between the first substrate and the second substrate and surrounding the liquid crystal layer,

wherein the encapsulant is an organic polymer material including an oxime or acetophenone photoinitiator.

17. The liquid crystal display of claim 1, wherein the liquid crystal composition has negative dielectric anisotropy.

18. A liquid crystal composition comprised in a liquid crystal display, the liquid crystal composition comprising:

at least one of liquid crystal compounds represented by the following Chemical Formula 1, at least one of liquid crystal compounds represented by the following Chemical Formula 2 and at least one of liquid crystal compounds represented by the following Chemical Formulae 5-4 to 5-8;

19. The liquid crystal composition of claim 18, wherein the liquid crystal compound of Chemical Formula 1 is present in an amount exceeding 0 wt % but less than 15 wt % based on a total weight of the liquid crystal composition.

20. The liquid crystal composition of claim 18, wherein the liquid crystal compound of Chemical Formula 1 includes at least one of liquid crystal compounds represented by the following Chemical Formulae 1-1-1 to 1-1-5,

21. The liquid crystal composition of claim 18, wherein the liquid crystal compound of Chemical Formula 1 includes at least one of liquid crystal compounds represented by the following Chemical Formulae 1-2-1 and 1-2-2 and the following Chemical Formulae 1-3-1 and 1-3-2:

22. The liquid crystal composition of claim 18, further comprising at least one of liquid crystal compounds represented by the following Chemical Formula 3:

23. The liquid crystal composition of claim 22, wherein any combination of the liquid crystal compound of Chemical Formula 1 and at least one of the liquid crystal compound of Chemical Formula 2 and the liquid crystal compound of Chemical Formula 3, is present in an amount exceeding 0 wt % but less than 15 wt % based on a total weight of the liquid crystal composition.

24. The liquid crystal composition of claim 18, further comprising a monomer represented by the following Chemical Formula 4:

25. The liquid crystal composition of claim 24, further comprising an oxime or acetophenone photoinitiator.

26. A liquid crystal composition comprising:

at least one of liquid crystal compounds represented by the following Chemical Formula 1, at least one of liquid crystal compounds represented by the following Chemical Formula 2 and at least one of liquid crystal compounds represented by the following Chemical Formulae 5-4 to 5-8;

27. The liquid crystal composition of claim 26 has negative dielectric anisotropy.

28. The liquid crystal composition of claim 26, wherein the liquid crystal compound of Chemical Formula 1 is present in an amount exceeding 0 wt % but less than 15 wt % based on a total weight of the liquid crystal composition.