Patent ID: 7817226

Claim:
A liquid crystal display device comprising: a first substrate having a first polarization layer on a light incident side; a second substrate having a second polarization layer on a light outgoing side; a liquid crystal layer disposed between said first substrate and said second substrate; a first birefringent film disposed between said first polarization layer and said second polarization layer; a second birefringent film disposed between said first birefringent film and said second polarization layer; and pixel electrodes and a common electrode arranged on one of said first substrate and said second substrate; wherein said first birefringement film is disposed between said first polarization layer and said first substrate, and said second birefringent film is disposed between said second polarization layer and said second substrate; wherein an absorbing axis of said first polarization layer and an absorbing axis of said second polarization layer form an angle of from 88 degrees to 92 degrees; wherein said liquid crystal layer has a property that a refractive index anisotropy is induced by an electric field applied between said pixel electrodes and said common electrode; wherein in-plane retarded phase axes of said first birefringent film and said second birefringent film form an angle of from −2 degrees to 2 degrees with the absorbing axis of said first polarization layer; and wherein said first birefringent film has an Nz coefficient smaller than 0.5 and said second birefringent film has an Nz coefficient greater than 0.5.