Invention Grant
- Patent Title: Liquid crystalline compound having fluorobiphenyl group and negative dielectric anisotropy, liquid crystal composition, and liquid crystal display element
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Application No.: US16125783Application Date: 2018-09-10
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Publication No.: US10533136B2Publication Date: 2020-01-14
- Inventor: Akihiro Takata , Atsushi Sakamoto
- Applicant: JNC CORPORATION , JNC PETROCHEMICAL CORPORATION
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: JNC CORPORATION,JNC PETROCHEMICAL CORPORATION
- Current Assignee: JNC CORPORATION,JNC PETROCHEMICAL CORPORATION
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: JCIPRNET
- Priority: JP2017-173922 20170911
- Main IPC: G02F1/1333
- IPC: G02F1/1333 ; C09K19/34 ; C09K19/30 ; G02F1/1334 ; G02F1/1337

Abstract:
The disclosure provides a liquid crystalline compound that has at least one of physical properties such as high stability with respect to heat and light, a high clearing point (or a high upper limit temperature), a low lower limit temperature of a liquid crystal phase, a low viscosity, suitable optical anisotropy, large negative dielectric anisotropy, a suitable elastic constant, favorable compatibility with other liquid crystalline compounds at room temperature and low temperatures, a liquid crystal composition including the compound, and a liquid crystal display element including the composition. The compound is represented by Formula (1). Here, R1 is an alkyl group having 2 to 10 carbon atoms in which one —CH2CH2— is substituted with —CH═CH—; R2 is an alkyl group having 1 to 8 carbon atoms; ring A1 is 1,4-cyclohexylene; Y1 and Y2 are hydrogen or fluorine; Z1 is a single bond; and n1 is 1 or 2.
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