Patent ID: 8497002

Claim:
A liquid crystal display device comprising: a TFT substrate comprising thin film transistors, pixel electrodes and an alignment film formed over the thin film transistor and the pixel electrodes; an opposing substrate comprising color filters and an alignment film formed over the color filters; and a liquid crystal disposed between the first alignment film and the second alignment film, wherein each of the alignment films comprises a first alignment film that contacts the liquid crystal layer and has a first polyamide, and a second alignment film that is formed on the bottom of the first alignment film and has a second polyimide, the number molecular weight of the first alignment film is greater than the number molecular weight of the second alignment film, the resistivity of the first alignment film is greater than the resistivity of the second alignment film, the first alignment film includes polyamide acid alkyl ester having the structure of the following chemical formula (1) where R1 respectively independently represents an alkyl group with a carbon number of 1 to 8, R2 respectively independently represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, a phenyl group, an alkyl group with a carbon number of 1 to 6, an alkoxy group with a carbon number of 1 to 6, a vinyl group (—(CH2)m-CH═CH2, m=0, 1, 2) or an acetyl group (—(CH2)m-C≡CH, m=0, 1, 2), and Ar represents an aromatic compound, and photoalignment is administered to the first alignment film.