Patent ID: 8310625

Claim:
A liquid crystal display device comprising: a scattering liquid crystal panel including a scattering-type liquid crystal layer which is capable of taking a transparent state and a scattering state, the scattering liquid crystal panel having a front face and a rear face, the scattering liquid crystal panel satisfying the relationship of 0.45<=log(I 0-10 /I 20-30 )<=1.48, where, regarding light which enters through the rear face of the scattering liquid crystal panel and goes out through the front face when the scattering-type liquid crystal layer is in the scattering state, I 0-10 represents a mean value of scattering intensity of light which goes out at an angle in a range from 0 degrees to 10 degrees with respect to a normal direction of the front face, and I 20-30 represents a mean value of scattering intensity of light which goes out in a range from 20 degrees to 30 degrees; and a retroreflection plate used in combination with the scattering liquid crystal panel, the retroreflection plate retroreflecting at least a portion of light which enters through the front face of the scattering liquid crystal panel and travels toward the rear face.