Patent ID: 6924856

Claim:
A liquid crystal display device comprising: (a) a first substrate located on an input side; (b) a second substrate fixed to be opposite to the first substrate; the second substrate being located on an output side; (c) a liquid crystal layer interposed between the first substrate and the second substrate; the liquid crystal layer containing a liquid crystal; the liquid crystal layer and the first and second substrates constituting a liquid crystal section; (d) a collimator for collimating its incident light; the collimator being located on the input side; (e) a first polarization controller for controlling polarization state of its incident light; the first polarization controller being located on the input side; the first polarization controller including a first polarizer member and a first quarter wavelength member; (g) a second polarization controller for controlling polarization state of its incident light; the second polarization controller being located on the output side; the second polarization controller including a second polarizer member and a second quarter wavelength member; wherein said collimator is located between said first nolarization controller and second polarization controller.