| abstract |
The present invention provides a liquid crystal display device, including: a first substrate and a second substrate; a liquid crystal layer that contains a liquid crystal material and is sandwiched between the first substrate and the second substrate; and a polymer layer that controls the alignment of liquid crystal molecules and is formed on at least one of the first substrate and the second substrate. The first substrate has a first electrode, and the polymer layer is formed by polymerizing one or more radical-polymerizable monomers added to the liquid crystal layer. At least one of the radical-polymerizable monomers is a compound represented by P-Sp 1 -Z 2 -A 1 -(Z 1 -A 2 ) n1 -Z 3 -Sp 2 -P. (In the formula, P represents a radical-polymerizable group. Sp 1 and Sp 2 each represent a direct bond or an alkylene group or the like. A 1 represents a divalent aromatic hydrocarbon group or the like. A 2 represents a phenylene group or the like. Z 1 , Z 2 , and Z 3 may be the same or different, and each represents a direct bond or an —O— group, —NH— group, —CO— group, —COO— group, —OCO— group, —NRCO— group, or —CONR— group. At least one of Z 1 , Z 2 , and Z 3 represents an —NRCO— group or —CONR— group. R represents a hydrogen atom or a C 1 -C 6 linear alkyl group or alkenyl group. n 1 is 0 or 1.) |