Patent ID: 6870586

Claim:
A liquid crystal display device, comprising: opposing upper and lower substrates; a liquid crystal sandwiched between the upper and lower substrates; an upper polarization layer and a lower reflective polarization layer disposed above and below the liquid crystal, respectively, the lower reflective polarization layer being formed by stacking dielectric interference films, the lower reflective polarization layer having two types of inclined surfaces joined at opposing ends at regular intervals to form a non-symmetrical triangular wave, an inclination angle formed between the respective one of the two types of inclined surfaces that form the non-symmetrical triangular wave and the lower substrate being different for the two types of inclined surfaces that are joined at the opposing ends, the lower reflective polarization layer being a transflective polarization layer which has a polarization axis and a reflection axis orthogonal to the polarization axis and which reflects a portion of a component of incident light parallel to the reflection axis and passes a portion of the component of the incident light parallel to the reflection axis therethrough; and a lower polarization layer disposed below the lower reflective polarization layer.