Patent ID: 7170575

Claim:
A liquid crystal film or layer with homeotropic alignment, wherein the homeotropic alignment is induced by an aligning layer of a substrate, and the aligning layer is an organic material comprising a perfluoro based surfactant and a polymeric matrix, wherein the liquid crystal film or layer with homeotropic alignment is made from a mixture comprising one or more compounds of one or more of the following formulae wherein x and y are each independently 1 to 12, A is a 1,4-phenylene or 1,4-cyclohexylene group, R 1 is halogen, cyano or an alkyl or alkoxy group with 1 to 12 C atoms, and L 1 and L 2 are each independently H, halogen, CN, or an alkyl, alkoxy or acyl group with 1 to 7 C atoms.