Invention Grant
- Patent Title: Nematic liquid crystal composition and liquid crystal display element including same
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Application No.: US14915309Application Date: 2014-09-04
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Publication No.: US10040997B2Publication Date: 2018-08-07
- Inventor: Shinichi Hirata , Go Sudo , Shotaro Kawakami
- Applicant: DIC CORPORATION
- Applicant Address: JP Tokyo
- Assignee: DIC CORPORATION
- Current Assignee: DIC CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2013-185016 20130906
- International Application: PCT/JP2014/073384 WO 20140904
- International Announcement: WO2015/034018 WO 20150312
- Main IPC: C09K19/20
- IPC: C09K19/20 ; C09K19/32 ; C09K19/30 ; C09K19/44 ; C07C69/604 ; C07C69/753 ; C07C69/88 ; C07D213/79 ; C07D303/40 ; C07D305/06 ; C09K19/54 ; C09K19/04 ; C09K19/12

Abstract:
A nematic liquid crystal composition having negative dielectric anisotropy (Δε), and a liquid crystal device element including the liquid crystal composition. The liquid crystal composition has sufficiently low viscosity (η), sufficiently low rotational viscosity (γ1), a large elastic constant (K33), and a negative dielectric anisotropy (Δε) whose absolute value is large, without reducing the refractive index anisotropy (Δn) or the nematic-isotropic liquid phase transition temperature (Tni). A VA-mode liquid crystal display element including the liquid crystal composition, the liquid crystal display element having no or minimal display defects and having excellent display quality and a fast response. The liquid crystal display element including the liquid crystal composition is useful for an active matrix-addressed liquid crystal display element and used for, for example, a VA- or PSVA-mode liquid crystal display element.
Public/Granted literature
- US20160215215A1 NEMATIC LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY ELEMENT INCLUDING SAME Public/Granted day:2016-07-28
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