Optical film and liquid crystal display device having optical film

A liquid crystal display device, comprising:

• an upper substrate and a lower substrate facing and spaced apart from each other;
• an upper orientation film on an inner surface of the upper substrate;
• a lower orientation film on an inner surface of the lower substrate;
• a liquid crystal layer interposed between the upper and lower orientation films;
• an upper polarizing plate on an outer surface of the upper substrate;
• a lower polarizing plate on an outer surface of the lower substrate;
• and
• at least one compensation film disposed between the lower substrate and the lower polarizing plate;
• wherein the compensation film is multi-layers of a first A-plate, an O-plate and a second A-plate, and
• wherein the liquid crystal layer initially has an alignment state parallel to the upper and lower substrates adjacent to the upper and lower substrates;
• perpendicular to the upper and lower substrates at a midpoint between the upper and lower substrates;
• and tilted to the upper and lower substrates between the upper substrate and the midpoint and between the lower substrate and the midpoint.

A liquid crystal display device, comprising:

• an upper substrate and a lower substrate facing and spaced apart from each other;
• an upper orientation film on an inner surface of the upper substrate;
• a lower orientation film on an inner surface of the lower substrate;
• a liquid crystal layer interposed between the upper and lower orientation films;
• an upper polarizing plate on an outer surface of the upper substrate;
• a lower polarizing plate on an outer surface of the lower substrate;
• and
• at least one compensation film disposed between the upper substrate and the upper polarizing plate,
• wherein the compensation film is multi-layers of a first biaxial film, an O-plate and a second biaxial film, three dimensional refractive index of the first and second biaxial films having a relation of nx≠ny≠nz.

A liquid crystal display device, comprising:

• an upper substrate and a lower substrate facing and spaced apart from each other;
• an upper orientation film on an inner surface of the upper substrate;
• a lower orientation film on an inner surface of the lower substrate;
• a liquid crystal layer interposed between the upper and lower orientation films;
• an upper polarizing plate on an outer surface of the upper substrate;
• a lower polarizing plate on an outer surface of the lower substrate;
• and
• at least one compensation film disposed between the lower substrate and the lower polarizing plate,
• wherein the compensation film is multi-layers of a first biaxial film, an O-plate and a second biaxial film, three dimensional refractive index of the first and second biaxial films having a relation of nx≠ny≠nz.