IP Library Granted Patent US 9,321,961
Granted Patent B2
US 9,321,961 · App. 14/425,267 · Granted Apr 26, 2016

Nematic liquid crystal composition

Inventors: Masakazu Kaneoya (Kita-adachi-gun, JP); Kiyofumi Takeuchi (Kita-adachi-gun, JP); Masashi Osawa (Kita-adachi-gun, JP); Kenta Tojo (Kita-adachi-gun, JP); Tetsuo Kusumoto (Kita-adachi-gun, JP)
Assignee: DIC CORPORATION (TOKYO)
C09K19/3402C09K19/0208C09K19/20C09K19/3059C09K19/3066C09K19/322C09K19/42C09K19/542C09K2019/0444C09K2019/0466C09K2019/3422C09K2019/548G02F1/0045
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 9,321,961
App. No.
14/425,267
Granted
Apr 26, 2016
Kind
B2
Abstract

Provided is a liquid crystal composition having a positive dielectric anisotropy, the liquid crystal composition containing two or more compounds selected from compounds represented by general formula (LC0-1) to general formula (LC0-3), and one or more compounds selected from groups of compounds represented by general formula (LC1) to general formula (LC5). The liquid crystal composition has features of a large Δ∈ and a low viscosity, and provides a practical, highly reliable liquid crystal display element that can realize low-voltage driving and high-speed response. The liquid crystal composition is useful for an active matrix driving liquid crystal display element. The liquid crystal composition can be applied to a liquid crystal display element of an IPS mode or the like.

Claims (22)

1. A liquid crystal composition having a positive dielectric anisotropy, the liquid crystal composition comprising compounds belonging to two or more groups selected from groups of compounds represented by general formula (LC0-1) to general formula (LC0-3); and one or more compounds selected from groups of compounds represented by general formula (LC1) to general formula (LC5):

(In the formulae, R 01 to R 41 each independently represent an alkyl group having 1 to 15 carbon atoms where one or more —CH 2 — in the alkyl group may each be substituted with —O—, —CH═CH—, —CO—, —OCO—, —COO—, —C≡C—, —CF 2 O—, or —OCF 2 — as long as oxygen atoms are not directly adjacent to each other, and one or more hydrogen atoms in the alkyl group may each be optionally substituted with a halogen; R 51 and R 52 each independently represent an alkyl group having 1 to 15 carbon atoms where one or more —CH 2 — in the alkyl group may each be substituted with —O—, —CH═CH—, —CO—, —OCO—, —COO—, or —C≡C— as long as oxygen atoms are not directly adjacent to each other; A 01 to A 42 each independently represent any of the structures below:

(where one or more —CH 2 — in a cyclohexane ring in the structure may each be substituted with —O— as long as oxygen atoms are not directly adjacent to each other, one or more —CH═ in a benzene ring in the structure may each be substituted with —N═ as long as nitrogen atoms are not directly adjacent to each other, and X 61 and X 62 each independently represent —H, —Cl, —F, —CF 3 , or —OCF 3 ); A 51 to A 53 each independently represent any of the structures below:

(In the formulae, one or more —CH 2 CH 2 — in a cyclohexane ring may each be substituted with —CH═CH—, —CF 2 O—, or —OCF 2 —, and one or more —CH═ in a benzene ring may each be substituted with —N═ as long as nitrogen atoms are not directly adjacent to each other); X 01 to X 03 each represent a hydrogen atom or a fluorine atom; X 11 to X 43 each independently represent —H, —Cl, —F, —CF 3 , or —OCF 3 ; Y 01 to Y 41 each represent —Cl, —F, —CF 3 , or —OCF 3 ; Z 01 and Z 02 each independently represent a single bond, —CH═CH—, —CC—, —CH 2 CH 2 —, —(CH 2 ) 4 —, —OCH 2 —, —CH 2 O—, —OCF 2 —, or —CF 2 O—; Z 31 to Z 42 each independently represent a single bond, —CH═CH—, —CC—, —CH 2 CH 2 —, or —(CH 2 ) 4 —, but Z 31 and Z 32 may each be independently —OCF 2 — or —CF 2 O—; when m 42 is 0, Z 41 and Z 42 may each be independently —OCH 2 —, —OCF 2 —, or —CF 2 O—; and at least one of Z 31 and Z 32 that are present is not a single bond; Z 51 and Z 52 each independently represent a single bond, —CH═CH—, —C≡C—, —CH 2 CH 2 —, —(CH 2 ) 4 —, —OCH 2 —, —CH 2 O—, —OCF 2 —, or —CF 2 O—; m 01 to m 51 each independently represent an integer of 0 to 3; m 31 +m 32 and m 41 +m 42 each independently represent 1, 2, 3, or 4; and when a plurality of A 01 , A 02 , A 03 , A 23 , A 31 , A 32 , A 41 , A 42 , A 52 , Z 01 , Z 02 , Z 31 , Z 32 , Z 41 , Z 42 , and/or Z 52 are present, they may be the same of different).

2. The liquid crystal composition according to claim 1 , comprising compounds belonging to two or more groups selected from groups of compounds represented by general formula (LC0-1) to general formula (LC0-3); one or more compounds selected from groups of compounds represented by general formula (LC1) to general formula (LC4); and one or more compounds selected from a group of compounds represented by general formula (LC5).

3. The liquid crystal composition according to claim 1 , wherein the compounds represented by general formula (LC0-1) are selected from groups of compounds represented by general formula (LC0-1-1) to general formula (LC0-1-8), the compounds represented by general formula (LC0-2) are selected from groups of compounds represented by general formula (LC0-2-1) to general formula (LC0-2-4), and the compounds represented by general formula (LC0-3) are selected from groups of compounds represented by general formula (LC0-3-1) to general formula (LC0-3-99):

(In the formulae, R 01 , X 01 , and Y 01 represent the same as those in claim 1 , R represents R 01 , “F, CF 3 , OCF 3 ” represents any of F, CF 3 , and OCF 3 , and (F) represents either H or F).

4. The liquid crystal composition according to claim 1 , wherein the compounds represented by general formula (LC2) are compounds selected from groups of compounds represented by general formula (LC2-1) to general formula (LC2-14):

(In the formulae, X 23 , X 24 , X 25 , and X 26 each independently represent a hydrogen atom, Cl, F, CF 3 , or OCF 3 , and X 22 , R 21 , and Y represent the same as those in claim 1 ).

5. The liquid crystal composition according to claim 1 , wherein the compounds represented by general formula (LC3) are compounds selected from groups of compounds represented by general formula (LC3-1) to general formula (LC3-32):

(In the formulae, X 33 , X 34 , X 35 , X 36 , X 37 , and X 38 each independently represent H, Cl, F, CF 3 , or OCF 3 , and X 32 , R 31 , A 31 , Y 31 , and Z 31 represent the same as those in claim 1 ).

6. The liquid crystal composition according to claim 1 , wherein the compounds represented by general formula (LC4) are compounds selected from groups of compounds represented by general formula (LC4-1) to general formula (LC4-23):

(In the formulae, X 44 , X 46 , X 47 , X 71 , and X 72 each independently represent H, Cl, F, CF 3 , or OCF 3 , and X 42 , X 43 , R 41 , and Y 41 represent the same as those in claim 1 ).

7. The liquid crystal composition according to claim 1 , wherein the compounds represented by general formula (LC5) are compounds selected from groups of compounds represented by general formula (LC5-1) to general formula (LC5-14):

In the formulae, R 51 and R 52 represent the same as those in claim 1 ).

8. The liquid crystal composition according to claim 1 , further comprising one or more polymerizable compounds.

9. The liquid crystal composition according to claim 1 , further comprising one or more antioxidants.

10. The liquid crystal composition according to claim 1 , further comprising one or more UV absorbers.

11. A liquid crystal display element using the liquid crystal composition according to claim 1 .

12. An active matrix driving liquid crystal display element using the liquid crystal composition according to claim 1 .

13. A liquid crystal display element of a TN mode, an OCB mode, an IPS mode, or a VA-IPS mode, using the liquid crystal composition according to claim 1 .

14. A polymer-stabilized liquid crystal display element of a TN mode, an OCB mode, an IPS mode, or a VA-IPS mode, produced by using the liquid crystal composition according to claim 8 , and polymerizing the polymerizable compounds in the liquid crystal composition in the presence or absence of an applied voltage.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 24, 2024
From: DIC CORPORATION
To: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
Reel/Frame 067528/0688 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 7, 2016
From: KANEOYA, MASAKAZU; TAKEUCHI, KIYOFUMI; OSAWA, MASASHI; TOJYO, KENTA; KUSUMOTO, TETSUO
To: DIC CORPORATION
Reel/Frame 037904/0379 →
Priority Claims (1)
JP 2012-193112 · Sep 3, 2012 · national
Continuity (1)
Related Publication 20150218451A1 · Aug 6, 2015