PROCESS FOR PRODUCTION OF BROAD-BAND CHOLESTERIC LIQUID CRYSTAL FILM

• Main Authors: MURAKAMI NAO, YOSHIMI HIROYUKI, ASANOI YOSHIAKI
• Format: Patent
• Language: English; Korean
• Published: 29.08.2012
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; 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; FREQUENCY-CHANGING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP

The production method for a broadband cholesteric liquid crystal film having a reflection bandwidth of 300 nm or more includes the steps of: applying a liquid crystal composition containing a polymerizable mesogenic compound (a), a polymerizable chiral agent (b), and a thermal polymerization initiat...