LIQUID CRYSTAL COMPOUND HAVING FLUORINATED ALKYL AS BONDING GROUP, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY ELEMENT

• Main Authors: SASADA YASUYUKI, DEMUS DIETRICH
• Format: Patent
• Language: English
• Published: 24.09.2004
• Edition: 7
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; ADHESIVES; CHEMISTRY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DYES; FREQUENCY-CHANGING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC CHEMISTRY; PAINTS; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

PROBLEM TO BE SOLVED: To provide a liquid crystal compound having chemical stability, excellent compatibility with another liquid crystal compound, suitable anisotropy of dielectric constant, small optical anisotropy, etc., to provide a liquid crystal composition, and to provide a liquid crystal display element. SOLUTION: This liquid crystal compound is expressed by formula (1) [Ra is a 1-20C alkyl or the like; Rb is a 1-20C alkyl or the like; A1, A2, A3, and A4are each 1,4-cyclohexylene, 1,4-phenylene or the like; Z1, Z2, and Z3are each a single bond, -(CH2)2- or the like, provide that at least one of Z1, Z2, and Z3is expressed by formula (2-1) (Y is a 1-3C alkyl in which H is arbitrarily substituted by F; and o is 0, 1 or 2), formula (2-2) (p is 0, 1 or 2) or formula (2-3) (W is F or H; and q and r is each 0, 1, 2 or 3); and m and n are each 0 or 1]. The liquid crystal composition contains the compound. The liquid crystal display element contains the composition. COPYRIGHT: (C)2004,JPO&NCIPI