Title:
LIQUID CRYSTAL MATERIAL, METHOD FOR PRODUCING LIQUID CRYSTAL MATERIAL AND LIQUID CRYSTAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2006/011377
Kind Code:
A1
Abstract:
Disclosed is a liquid crystal material which has low optical absorption in the ultraviolet region. Also disclosed are a method for producing a liquid crystal material and a liquid crystal device. Specifically disclosed is a compound represented by the following chemical formula (I): wherein R represents an alkyl group or alkenyl group arbitrarily containing one or more oxygen or sulfur atoms, Y is independently selected from oxygen and sulfur, n is an integer of 2-8, X represents a direct bond, a C1-4 alkylene or a C2-4 alkenylene, and A is selected from various specific cyclic structures. This liquid crystal material (compound) has low birefringence and is stable to ultraviolet radiation. Consequently, the liquid crystal material is useful for liquid crystal devices requiring low birefringence such as reflective displays and liquid crystal devices exposed to high-level ultraviolet radiation such as fluorescent display cells.
Inventors:
CAMPBELL NEIL (GB)
YAMAMOTO JUN (JP)
YOKOYAMA HIROSHI (JP)
YAMAMOTO JUN (JP)
YOKOYAMA HIROSHI (JP)
Application Number:
PCT/JP2005/013123
Publication Date:
February 02, 2006
Filing Date:
July 15, 2005
Export Citation:
Assignee:
JAPAN SCIENCE & TECH AGENCY (JP)
CAMPBELL NEIL (GB)
YAMAMOTO JUN (JP)
YOKOYAMA HIROSHI (JP)
CAMPBELL NEIL (GB)
YAMAMOTO JUN (JP)
YOKOYAMA HIROSHI (JP)
International Classes:
C07C41/16; C07C43/192; C09K19/30; G02F1/13; C07M7/00; (IPC1-7): C07C43/192; C07C41/16; C09K19/30; G02F1/13; C07M7:00
Domestic Patent References:
| WO2002081418A2 | 2002-10-17 | |||
| WO2002081418A2 | 2002-10-17 |
Foreign References:
| JPH06306361A | 1994-11-01 | |||
| DE4223501A1 | 1994-01-20 | |||
| DE4223058A1 | 1994-01-20 | |||
| EP0418362B1 | 1995-01-04 | |||
| EP0732330B1 | 2001-09-12 | |||
| EP0688752A1 | 1995-12-27 | |||
| US6689291B1 | 2004-02-10 | |||
| US6989291B2 | 2006-01-24 | |||
| DE4223501A1 | 1994-01-20 | |||
| DE4223058A1 | 1994-01-20 |
Other References:
RAVIOL A. ET AL: "The effect of molecular association and tube dilation on the rotational viscosity and rotational diffusion in nematic liquid crystals", J. CHEM. PHYS., vol. 109, no. 9, 1 September 1995 (1995-09-01), pages 3788 - 3791, XP002992933
KIRSCH P. AND POETSCH E.: "Design and Synthesis of Novel trans-1, 3-Dioxane Based Liquid Crystals", FREIBURGER ARBEITSTAGUNG FLUSSIGKRISTALLE, 25 May 1998 (1998-05-25), pages 1 - 2, XP002992934
RAVIOL A. ET AL.: "The effect of molecular association and tube dilation on the rotational viscosity and rotational diffusion in nematic liquid crystals", J. CHEM.PHYS., vol. 109, no. 9, 1 September 1995 (1995-09-01), pages 3788 - 3791
KIRSCH P.; POETSCH E: "Design and Synthesis of Novel trans-1, 3-Dioxane Based Liquid Crystals", FREIBURGER ARBEITSTAGUNG FLUSSIGKRISTALLE, 25 May 1998 (1998-05-25), pages 1 - 2
See also references of EP 1780193A4
KIRSCH P. AND POETSCH E.: "Design and Synthesis of Novel trans-1, 3-Dioxane Based Liquid Crystals", FREIBURGER ARBEITSTAGUNG FLUSSIGKRISTALLE, 25 May 1998 (1998-05-25), pages 1 - 2, XP002992934
RAVIOL A. ET AL.: "The effect of molecular association and tube dilation on the rotational viscosity and rotational diffusion in nematic liquid crystals", J. CHEM.PHYS., vol. 109, no. 9, 1 September 1995 (1995-09-01), pages 3788 - 3791
KIRSCH P.; POETSCH E: "Design and Synthesis of Novel trans-1, 3-Dioxane Based Liquid Crystals", FREIBURGER ARBEITSTAGUNG FLUSSIGKRISTALLE, 25 May 1998 (1998-05-25), pages 1 - 2
See also references of EP 1780193A4
Attorney, Agent or Firm:
Shimizu, Mamoru (11-12 Kanda-mitoshiro-ch, Chiyoda-ku Tokyo 53, JP)
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