Invention Grant
- Patent Title: Nematic liquid crystal composition and liquid crystal display device using the same
- Patent Title (中): 向列液晶组合物和使用其的液晶显示装置
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Application No.: US11793132Application Date: 2005-12-14
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Publication No.: US07670504B2Publication Date: 2010-03-02
- Inventor: Shotaro Kawakami , Takashi Matsumoto , Tetsuo Kusumoto , Yoshitaka Saito , Yutaka Nagashima , Makoto Negishi , Masayuki Iwakubo
- Applicant: Shotaro Kawakami , Takashi Matsumoto , Tetsuo Kusumoto , Yoshitaka Saito , Yutaka Nagashima , Makoto Negishi , Masayuki Iwakubo
- Applicant Address: JP Tokyo
- Assignee: Dainippon Ink & Chemicals, Inc.
- Current Assignee: Dainippon Ink & Chemicals, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Edwards Angell Palmer & Dodge LLP
- Priority: JP2004-362719 20041215; JP2004-362720 20041215; JP2005-019600 20050127
- International Application: PCT/JP2005/022972 WO 20051214
- International Announcement: WO2006/064853 WO 20060622
- Main IPC: C09K19/00
- IPC: C09K19/00 ; C09K19/06 ; C09K19/52

Abstract:
The present invention provides a liquid crystal composition having a negative dielectric anisotropy whose absolute value is large, and a low viscosity, and also provides a VA type liquid crystal element using the same.Disclosed is a liquid crystal composition containing a compound represented by the general formula (I) and an alkenyl compound represented by the general formula (II): By combining the liquid compounds according to the present invention, a liquid crystal composition having a low viscosity and a negative dielectric anisotropy could be obtained while nearly maintaining physical properties such as refractive anisotropy. By using the composition, a liquid crystal element having excellent reliability, capable of maintaining a high voltage retention until a high temperature region, is provided, and the display is very applicable as a VA type, ECB type, or IPS type liquid crystal display, and is particularly effective for speeding up response without thinning cell gaps.
Public/Granted literature
- US20080111107A1 Nematic Liquid Crystal Composition And Liquid Crystal Display Device Using The Same Public/Granted day:2008-05-15
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