Display device and thin film polarizer used for display device

摘要

In a display device which includes: a first substrate; a second substrate; and a thin film polarizer which is directly formed on a surface of the second substrate on a side opposite to the first substrate, the thin film polarizer includes a polarization element film and a protection layer which is laminated to the polarization element film, the polarization element film is made of an aligned lyotropic liquid crystal material, and the protection layer has a refractive index smaller than a refractive index of the polarization element film in a transmission axis direction. The protection layer may have a thickness smaller than a thickness of polarization element film.

主权项

1. A display device comprising:
a first substrate; a second substrate; a polarization element film which is directly formed on a surface of the second substrate on a side opposite to a side where the first substrate is arranged; and a protection layer which is formed in contact with a surface of the polarization element film on a side opposite to a side where the second substrate is arranged; wherein the polarization element film is made of an aligned lyotropic liquid crystal material; wherein the protection layer has a phase advance axis which is parallel to a direction of a transmission axis of the polarization element film, and a phase delay axis which is parallel to an absorption axis of the polarization element film; and wherein a refractive index of the protection layer in the phase advance axis is smaller than a refractive index of the polarization element film in the direction of the transmission axis.