LIQUID CRYSTAL DISPLAY DEVICE

摘要

An alignment film is given a 2-layer structure comprising a photoalignment film that is photoalignable and a low-resistivity alignment film whose resistivity is smaller than that of the photoalignment film. The photoalignment film is formed by a polyimide whose precursor is polyamide acid alkyl ester, the number molecular weight of the photoalignment film is large, and the stability of alignment of the photoalignment film by photoalignment is excellent. The low-resistivity alignment film is formed by a polyimide whose precursor is polyamide acid, the number molecular weight of the low-resistivity alignment film is small, and the resistivity of the low-resistivity alignment film is small. The 2-layer structure alignment film can be maintaining an excellent photoalignment characteristic, so DC afterimages can be controlled.

主权项

1. An alignment film varnish for a liquid crystal display device comprising:
a first compound including photodegradable polymer, and a second compound including polyamide acid; wherein the second compound has higher affinity with an Indium Tin Oxide than that of the first compound.