Patent ID: 7589810

Claim:
An electrooptic device that simultaneously displays a first image and a second image in different directions, the electrooptic device comprising: an electrooptic panel including a first polarizer and a plurality of pixel rows in which first and second pixels are alternately arranged, and configured to emit light through the first polarizer; a retardation film disposed on a display side of the first polarizer; a liquid crystal device disposed on a display side of the retardation film and configured to switch between a first alignment state in which a phase difference is not provided to linearly polarized light having a polarization axis parallel or perpendicular to a transmission axis of the first polarizer and a second alignment state in which a phase difference of λ/2 is provided to the linearly polarized light; and a second polarizer disposed on a display side of the liquid crystal device and having a transmission axis parallel or perpendicular to the transmission axis of the first polarizer, wherein the retardation film includes first regions having a slow axis parallel or perpendicular to the transmission axis of the first polarizer and having a retardation of λ/2, and second regions having a slow axis at a relative angle of 45° to the transmission axis of the first polarizer and having a retardation of λ/2, wherein the first regions and the second regions are alternately arranged along the pixel rows while being shifted by half of an arrangement pitch of the first and second pixels with respect to the first and second pixels, as viewed in the normal direction of the electrooptic panel, wherein the first pixels display the first image when the liquid crystal layer is in the first alignment state, and display the second image when the liquid crystal layer is in the second alignment state, and wherein the second pixels display the second image when the liquid crystal layer is in the first alignment state, and display the first image when the liquid crystal layer is in the second alignment state.