Distribution-type compensator and projection-type liquid crystal display apparatus

摘要

A distribution-type compensator has an in-plane retardation of 18 nm±5 nm in a rectangular effective region with a long side and a short side. The slow axis direction of the distribution-type compensator changes continuously in a plane of the effective region and an angle difference between slow axis directions at any two positions in the effective region has a maximum value in a range of 10 degrees to 30 degrees. The distribution-type compensator is mounted to a projection-type display apparatus.

主权项

1. A distribution-type compensator provided to a liquid crystal display apparatus in which a field lens is disposed between a reflection-type liquid crystal element and a polarization beam splitter, the distribution-type compensator is disposed between the field lens and the reflection-type liquid crystal element wherein,
a slow axis direction is changed so as to provide an oblique light correction component for a non-telecentric region, in-plane retardation is 18 nm±5 nm in a rectangular effective region with a long side and a short side, a slow axis direction changes discretely or continuously in a plane of the effective region according to a polarization direction in which transmittance of incident light to the polarization beam splitter becomes a maximum transmittance, and an angle difference between slow axis directions at any two points in the effective region has a maximum value in a range of 10 degrees to 30 degrees.