Patent ID: 8189039
Filing Date: 2012-05-29
Classification: G02B,H04N

Abstract:
1. A switchable autostereoscopic display device, comprising: a display panel having an array of display pixels for producing a display, the array of display pixels being arranged in rows and columns; an array of lens elements arranged over the display panel for directing the light output of the array of display pixels so as to provide a stereoscopic image, the array of lens elements comprising an electro-optic material whose refractive index is switchable by selective application of an electric field between a first value that maintains the light output directing function and a second values that removes the light output directing function; and first (R wherein the electrode layers are segmented with the first electrode layer comprising an array of row electrode lines (R wherein the device further comprises a driver circuit for applying drive signals to the electrode lines to control the switching of the array of lens elements, wherein the drive signals comprise: a row select voltage waveform (R a column select voltage waveform (C a common row and column de-select voltage waveform (V and wherein the waveforms each comprise a substantially square wave voltage waveform, each waveform having the same period, with the three waveforms comprising each of the three possible timings to provide relative phase shifts of 2π/3.