[EN] LIQUID CRYSTAL-BASED LIGHT VALVE<br/>[FR] MODULATEUR DE LUMIÈRE À BASE DE CRISTAUX LIQUIDES
申请人:MERCK PATENT GMBH
公开号:WO2020254219A1
公开(公告)日:2020-12-24
The present invention relates to a method for preparing a light valve which is operable in and electrically switchable between an optically clear and transparent state and an opaque state, wherein one or more polymerisable mesogenic compounds provided in a layer containing a liquid-crystalline medium which comprises one or more mesogenic compounds, one or more chiral compounds, one or more dichroic dyes and the one or more polymerisable mesogenic compounds are subjected to photo-polymerisation. The present invention further relates to a liquid-crystalline medium used in the method, to a light valve obtained or respectively obtainable by carrying out the method, and to the use of the light valve in mobile devices.