Patent ID: 8771809

Claim:
A photoalignment material, comprising: a photoalignment polymer having a photosensitive portion, the photosensitive portion represented by the followina Chemical Formula 1, wherein R 1 represents a cyclic compound, each of R 2 and R 3 represents a single bond, —(C n H 2n )—, —(C x H 2x )O(C y H 2y )—, or —(C a H 2a )O(C b H 2b )O(C d H 2d )—, “n” represents an integer in the range of 1 to 6, each of “x”, “y”, “a”, “b” and “d” represents 0 or an integer in the range of 1 to 6, x+y is an integer in the range of 1 to 5, a+b+d is an integer in the range of 1 to 6, each hydrogen atom is replaceable with —CH 3 , —CH 2 —CH 3 , —OCH 3 , —OCH 2 CH 3 , —OCH 2 OCH 3 , F, or Cl, and each hydrogen atom of —CH 3 , —CH 2 —CH 3 , —OCH 3 , —OCH 2 CH 3 , or —OCH 2 OCH 3 is replaceable with F or Cl, wherein the photoalignment polymer is formed by reacting a compound represented by the following Chemical Formula 4 with an acid anhydride, wherein “A” represents —(C n H 2n )—, “n” represents an integer in the range of 1 to 12, “B” represents a single bond or —(C m H 2m )—, “m” represents an integer in the range of 1 to 12, at least one of the (—CH 2 —)'s in each of “A” and “B” is replaceable with and R 4 represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, and each hydrogen atom of Chemical Formula 4 except the hydrogen atoms of —NH 2 is replaceable with F or Cl.