Invention Grant
- Patent Title: Five-ring liquid crystal compound having a nitrogen-containing heterocyclic ring, liquid crystal composition and liquid crystal display device
- Patent Title (中): 具有含氮杂环的五环液晶化合物,液晶组合物和液晶显示装置
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Application No.: US13125041Application Date: 2009-10-14
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Publication No.: US08475888B2Publication Date: 2013-07-02
- Inventor: Hiroyuki Tanaka , Kouki Sagou
- Applicant: Hiroyuki Tanaka , Kouki Sagou
- 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: J.C. Patents
- Priority: JP2008-270639 20081021
- International Application: PCT/JP2009/067807 WO 20091014
- International Announcement: WO2010/047260 WO 20100429
- Main IPC: C09K19/34
- IPC: C09K19/34 ; C09K19/32 ; C09K19/30 ; C09K19/12 ; C09K19/20 ; C07D239/02

Abstract:
Provided is a liquid crystal compound having general physical properties necessary for a compound, stability to heat, light or the like, a wide liquid crystal phase temperature range, a high clearing point, an excellent compatibility with other liquid crystal compounds, a large refractive index anisotropy and a large dielectric anisotropy. Provided are a liquid crystal composition including the liquid crystal compound, and a liquid crystal display device containing the liquid crystal composition.The compound is represented by formula (1): wherein, for example, R1 is alkyl having 1 to 20 carbons; at least one of the rings A1 to A6 is pyrimidine-2,5-diyl or pyridine-2,5-diyl and the others are 1,4-cyclohexylene or 1,4-phenylene; Z1 to Z6 are a single bond; L1 to L4 is hydrogen or halogen; X1 is hydrogen, halogen, —C≡N or alkyl having 1 to 10 carbons; and l, m, n, o, p and q are 0 or 1 and l+m+n+o+p+q=3.
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