Patent ID: 6899929
Filing Date: 2005-05-31
Classification: C09K,G02B,G02F

Abstract:
1. Polymer layers comprising an anisotropic polymer layer exhibiting a tilted structure with an optical axis having a tilt angle θ relative to the plane of the layer greater than zero, obtained by polymerizing a polymerizable mesogenic material comprising at least one compound of the formula: wherein P is a polymenzable group, Sp is a spacer group having 1 to 20 C atoms, X is a group of —O—, —S—, —CO—, —COO—, —OCO—, —OCOO— or a single bond, n is 0 or 1, MG is a mesogenic or mesogenicity supporting group, and R is an alkyl radical with up to 25 C atoms optionally unsubstituted, mono- or polysubstituted by halogen or CN, optionally one or more non-adjacent CH