Patent ID: 7697204
Filing Date: 2010-04-13
Classification: G02B,G02F,H04N

Abstract:
1. An electro-optic device comprising: a display panel that displays images; an illumination system that applies light to the display panel; a first polarizing unit, disposed between the illumination system and the display panel, that passes light with a first polarizing axis from the illumination system; a polarization-controlling liquid crystal panel, disposed between the first polarizing unit and the display panel, that includes first polarization control regions that extend in a first direction and second polarization control regions that extend in the first direction, wherein the first and second polarization control regions are located in alternating succession along a second direction that is orthogonal to the first direction, wherein light with the first polarizing axis passes through the first polarization control regions, and wherein light with a second polarizing axis, which is formed by changing the first polarizing axis substantially orthogonally, passes through the second polarization control regions; a first half-wave plate, disposed between the polarization-controlling liquid crystal panel and the display panel, that applies a phase difference to incident light; a lens disposed between the first half-wave plate and the display panel, wherein the lens includes a plurality of linear lens patterns directing light with the first polarizing axis and light with the second polarizing axis into specified directions; a second half-wave plate, disposed between the lens and the display panel, that applies the phase difference to incident light; a retardation film, disposed between the second half-wave plate and the display panel, that includes transmitting regions that extend in the second direction and polarizing regions that extend in the second direction, wherein the transmitting regions and the polarizing regions are located in alternating succession along the first direction, wherein incident light passes through the transmitting regions, and wherein the polarizing axis of incident light is changed 90 degrees in the polarizing regions; and a second polarizing unit disposed between the retardation film and the display panel, wherein an angle of the polarizing axis of the first polarizing unit relative to the second direction is in a range of 40 degrees to 50 degrees, wherein an angle of the polarizing axis of the second polarizing unit relative to the second direction is in a range of 40 degrees to 50 degrees, wherein angles of a phase advancing axis of the first half-wave plate and a phase advancing axis of the second half-wave plate relative to the second direction are in one of a first range and a second range, and wherein the first range is from 17.5 degrees to 27.5 degrees and the second range is from 62.5 degrees to 72.5 degrees.