ORTHO ESTER DERIVATIVE, LIQUID CRYSTAL COMPOSITION, AND LIQUID CRYSTAL DISPLAY ELEMENT

• Main Author: MASUKAWA TOKIFUMI
• Format: Patent
• Language: English; Korean
• Published: 05.02.2014
• Subjects: 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; HETEROCYCLIC COMPOUNDS; 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

The invention is to provide a liquid crystal compound having a large dielectric anisotropy, a high voltage holding ratio and stability to heat, light and so forth, maintaining a nematic phase in a wide temperature range, having a suitable optical anisotropy and an excellent compatibility with other liquid crystal compounds, particularly, to provide a liquid crystal compound having a large dielectric anisotropy. The invention provides compound (1): In the formula, for example, R 1 is alkyl and having 1 to 20 carbons; ring A 1 , ring A 2 , ring A 3 , ring A 4 , ring A 5 and ring A 6 are independently 1,4-cyclohexylene or 1,4-phenylene; Z 1 , Z 2 , Z 3 , Z 4 , Z 5 , Z 6 and Z 7 are independently a single bond, - (CH 2 ) 2 -, -COO-, -OCO-, CF 2 O-, -OCF 2 - or -CH=CH-; X 1 is fluorine, -CF 3 or -OCF 3 ; and Y 1 and Y 2 are independently hydrogen or fluorine.