| abstract |
The present invention provides a liquid crystal display device including a polymer layer which is placed on an alignment layer and which controls the alignment of liquid crystal molecules adjacent thereto. The polymer layer is one formed by polymerizing a monomer added to the liquid crystal layer. The monomer is a compound represented by the following formula: n P 1 -A 1 -(Z 1 -A 2 ) n -P 2 (I)n n where P 1 and P 2 are identical to or different from each other and represent an acrylate group or a methacrylate group; Z 1 represents one or more groups which are identical to or different from each other and which are COO, OCO, or O or indicates that A 1 and A 2 or A 2 and A 2 are directly bonded to each other; a hydrogen atom may be substituted by a hydrogen atom, a methyl group, an ethyl group, or a propyl group; A 1 and A 2 represent specific phenanthrene groups which are identical to or different from each other. A backlight includes a light source including at least one light-emitting diode. The light-emitting diode emits light with a wavelength of substantially 400 nm or more only. |