Patent ID: 7477206
Filing Date: 2009-01-13
Classification: G02F,G03B,H04N

Abstract:
1. A method of displaying a stereoscopic video image, comprising: positioning a push-pull liquid crystal modulator that includes a pair of surface mode liquid crystal cells with orthogonal rub axes and a linear polarizer having an absorption axis bisecting the orthogonal rub axes, so that light comprising the stereoscopic video image propagates therethrough; and driving the modulator in synchronization with fields of a field sequential image so that a transmitted image emerging from the modulator consists of right-handed circularly polarized fields alternating at field rate with left-handed circularly polarized fields; wherein said driving comprises moving an electrical charge using a waveform comprising at least one quenching pulse in association with a holding voltage comprising a relatively brief voltage spike opposite in polarity to the holding voltage and lower in absolute voltage than the holding voltage at a beginning of a holding voltage period.