TRIAZINE RING WITH ONE MORE PHOTOACTIVE GROUPS BASED POLYESTER POLYMERS COMPOSITION FOR PHOTOINDUCED LIQUID CRYSTAL ALIGNMENT PREPARATION METHOD OF THE FILM FOR PHOTOINDUCED LIQUID CRYSTAL THEREBY AND THE LIGUID CRYSTAL CELL COMPRISING THE FILM

摘要

PURPOSE: A polyester-based photosensitive polymer liquid crystal aligning agent composition using a triazine ring having at least one photoactive group, a method for preparing a photosensitive polymer liquid crystal alignment layer by using the composition and a liquid crystal device containing the liquid crystal alignment layer are provided, to improve heat stability and alignment force of an aligning agent. CONSTITUTION: The polyester-based photosensitive polymer liquid crystal aligning agent composition comprises a compound which has a main chain containing a triazine ring and a side chain containing at least one photoactive group and is represented by the formula 1, wherein any one among the photoactive groups can undergo photolysis, another can undergo Fries photo-rearrangement and the others can undergo photo-dimerization, photo-isomerization or photo-crosslinking, and m+n=1, 0=m=1 and 0=n=1. The ester bond connecting R2 and R3 is obtained by the reaction of a diol and a carboxylic acid.