Patent ID: 8493440
Filing Date: 2013-07-23
Classification: G02F,H04N

Abstract:
1. A switchable autostereoscopic display device comprising: a display panel having an array of display pixels for producing a display, the display pixels being arranged in rows and columns; and an imaging arrangement for directing the output from different pixels to different spatial positions to enable a stereoscopic image to be viewed, wherein the imaging arrangement is electrically switchable between at least three modes comprising a 2D mode and at least two 3D modes, one 3D mode providing parallax substantially only in a first direction and the other 3D mode providing parallax substantially only in a second substantially perpendicular direction, and wherein the imaging arrangement comprises an electrically configurable graded index lens array; wherein the lens array comprises a layer of liquid crystal material sandwiched between first and second electrode layers, wherein said layer of liquid crystal material, in response to a potential across the liquid crystal layer applied by the electrode layers, realizes a lens function of said electrically configurable graded index lens array, and wherein one or more of a lens size, a lens shape, and a lens orientation for the electrically configurable graded index lens array are controllably configured by said potential, wherein each electrode layer comprises an electrode pattern comprising first and second interleaved comb electrodes, the comb fingers defining a plurality of parallel electrode portions, and wherein the parallel electrode portions of the first and second electrode layers are perpendicular to each other.