US 11,788,010 B2
Liquid crystal composition and liquid crystal display device comprising the same
Chenglong Sun, Nanjing (CN); Yafei Yang, Nanjing (CN); Tengyun Zhao, Nanjing (CN); Rongrong Li, Nanjing (CN); Huijuan Dai, Nanjing (CN); Panpan Wang, Nanjing (CN); Di He, Nanjing (CN); and Wenquan Ding, Nanjing (CN)
Assigned to Jiangsu Hecheng Display Technology Co., Ltd., Nanjing (CN)
Filed by Jiangsu Hecheng Display Technology Co., Ltd., Nanjing (CN)
Filed on Oct. 26, 2022, as Appl. No. 17/973,646.
Claims priority of application No. 202111283469.7 (CN), filed on Nov. 1, 2021.
Prior Publication US 2023/0159826 A1, May 25, 2023
Int. Cl. G02F 1/1333 (2006.01); C09K 19/34 (2006.01)
CPC C09K 19/3491 (2013.01) [C09K 19/3405 (2013.01); C09K 2019/3408 (2013.01)] 11 Claims
 
1. A liquid crystal composition comprising:
at least one compound of general formula F

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 and
at least one compound of general formula N in an amount of 10%-45% by weight of the total weight of the liquid crystal composition

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wherein,
RF1 represents —H, halogen, C1-12 linear alkyl, or C3-12 branched alkyl,

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 one or more nonadjacent —CH2— in the C1-12 alkyl linear or the C3-12 branched alkyl can each be independently replaced by —C≡C—, —O—, —CO—, —CO—O— or —O—CO—, and one or more —H in the C1-12 alkyl linear or the C3-12 branched alkyl can each be independently substituted by —F or —Cl;
RF2 represents

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RN1 and RN2 each independently represents C1-12 linear alkyl, or C3-12 branched alkyl,

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 one or more nonadjacent —CH2— in the C1-12 alkyl linear or the C3-12 branched alkyl can each be independently replaced by —CH═CH—, —C≡C—, —O—, —CO—, —CO—O— or —O—CO—;
ring

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 and ring

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 each independently represents

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 wherein one or more —CH2— in

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 can be replaced by —O—, one or more single bond in the rings can be replaced by double bond, wherein one or more —H on

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 can each be independently substituted by —CN, —F or —Cl, and one or more —CH═ in the rings can be replaced by —N═;
ring

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 and ring

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 each independently represents

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 wherein one or more —CH2— in

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 can be replaced by —O—, one or more single bond in the rings can be replaced by double bond, wherein one or more —H on

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 can be substituted by —F, —Cl or —CN, and one or more —CH═ in the rings can be replaced by —N═;
XF represents —O—, —S— or —CO—;
LF1 and LF2 each independently represents —H, —F, —Cl, —CF3 or —OCF3;
LN1 and LN2 each independently represents —H, C1-3 alkyl or halogen;
ZF1, ZF2, ZF4, ZN1 and ZN2 each independently represents single bond, —O—, —CO—O—, —O—CO—, —CH2O—, —OCH2—, —CH═CH—, —C≡C—, —CH2CH2—, —CF2CF2—, —(CH2)4—, —CF2O— or —OCF2—;
nF1 and nF2 each independently represents 0, 1 or 2, wherein, when nF1 represents 2, ring

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 can be same or different, when nF2 represents 2, ring

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 can be same or different, and ZF2 can be same or different;
nF3 represents an integer of 0-4; and
nN1 represents 0, 1, 2 or 3, nN2 represents 0 or 1, and 0≤nN1+nN2≤3, when nN1=2 or 3, ring

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 can be same or different, and ZN1 can be same or different.