Examples of Photoaligned Retardation Films

If LCP is used to make a retardation film, then one is not restricted to retardation films with a uniform optical axis. It is possible in fact to have twisted alignment, bend alignment, hybrid alignment, etc., in the same manner as ordinary LCs. After 

This procedure has a drawback in that the removal of the top substrate sometimes will damage the film. It is also not amenable to mass production. 

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