Patent ID: 6252624
Filing Date: 2001-06-26
Classification: G02B,G02F,H04N

Abstract:
A three-dimensional display having a display device alternately displaying an image for the right eye and an image for the left eye in division of the images at predetermined time periods, a liquid crystal shutter disposed in front of said display device and switching a linear polarization and an elliptical polarization in synchronization with image switching of said display device, and polarized glasses having different right and left polarization characteristics, for observing an image transmitted through said liquid crystal shutter, said three-dimensional display comprising:a retardation plate disposed on said display device side of said polarized glasses to compensate elliptical polarization,wherein said retardation plate is configured to have a condition of .vertline..DELTA.n.sub.1 d.sub.1 -.DELTA.n.sub.2 d.sub.2.vertline..ltoreq.50 nm in the range of light wavelength from 400 nm through 900 nm, for the retardation (.DELTA.n.sub.1 d.sub.1) of the retardation plate and a retardation (.DELTA.n.sub.2 d.sub.2) of a liquid crystal cell forming said liquid crystal shutter,wherein .DELTA.n.sub.1 : refractive index anisotropy of the retardation plate, d.sub.1 : thickness of the retardation plate, .DELTA.n.sub.2 : refractive index anisotropy of liquid crystal layer of the liquid crystal cell, and d.sub.2 : thickness of the liquid crystal layer of the liquid crystal cell.