公开(公告)号：US20230340329A1

公开(公告)日：2023-10-26

申请号：US18028014

申请日：2021-09-23

申请人： Merck Patent GmbH

发明人： Stephen MULCAHY ,  Owain Llyr PARRI ,  Sarabjot KAUR

IPC分类号： C09K19/38 ,  C09K19/54 ,  C09K19/58

CPC分类号： C09K19/3852 ,  C09K19/542 ,  C09K19/588 ,  C09K2019/0448

摘要： The invention relates to a polymerizable LC material comprising one or more reactive mesogenic compounds, one or more chiral compounds and one or more compounds of formula I,




wherein the individual radicals have one of the meaning as given in the claims. Furthermore, the present invention relates also to a method for its preparation, a polymer film with improved thermal and UV stability obtainable from a corresponding polymerizable LC material, to a method of preparation of such polymer film, and to the use of such polymer film and said polymerizable LC material in optical, electro-optical, decorative or security devices.

公开(公告)号：US20210096431A1

公开(公告)日：2021-04-01

申请号：US17032367

申请日：2020-09-25

申请人： Merck Patent GmbH

发明人： Joseph SARGENT ,  Sarabjot KAUR ,  Simon SIEMIANOWSKI ,  Izumi SAITO

IPC分类号： G02F1/1337 ,  C09K19/56

摘要： A double layer liquid crystal device comprises a first and a second layer with orthogonal or crossed alignment of the liquid crystal phase of the two layers, in which the first and second layer have first and second alignment aids comprised of a polymerized or polymerizable molecular compound. The layers are aligned by UV photoalignment and vertical self-alignment by the aid of suitable additives.