| 摘要 |
PROBLEM TO BE SOLVED: To provide an IPS (in-plane switching) or FFS (fringe field switching) liquid crystal display device that is not only improved in a viewing angle contrast but is excellent in a front contrast.SOLUTION: The IPS or FFS liquid crystal display device includes, in the following order, a first polarizing film, an optical compensation film comprising a first retardation region and a second retardation region in contact with the first retardation region, a first substrate, a liquid crystal layer comprising a nematic liquid crystal material, and a second substrate, in which liquid crystal molecules of the nematic liquid crystal material are aligned parallel to the surfaces of the pair of substrates during black display. The slow axes of the first retardation region and of the second retardation region are parallel to each other; the first retardation region includes a retardation layer containing a vertically aligned discotic liquid crystal compound; and an in-plane retardation Re(550) at a wavelength of 550 nm in the first retardation region is 100 nm or less while an in-plane retardation Re(550) at a wavelength of 550 nm in the second retardation region is 20 nm or more. |
