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High-Performance Active Liquid Crystalline Shutters for Stereo Computer Graphics and Other 3-D Technologies

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3 Author(s)
Tatiana Sergan ; California State Univ., Sacramento, CA ; Vassili Sergan ; Boyd MacNaughton

Stereoscopic computer displays create a 3-D image by alternating two separate images for each of the viewer's eyes. Field-sequential viewing systems supply each eye with the appropriate image by blocking the wrong image for the wrong eye. In our work, we have developed a new mode of operation of a liquid crystal shutter that provides for highly effective blockage of undesired images when the screen is viewed in all viewing directions and eliminates color shifts associated with long turn-off times. The goal was achieved by using a pi-cell filled with low-rotational-viscosity and high-birefringence fluid and additional negative birefringence films with splay optic axis distribution. The shutter demonstrates a contrast ratio higher than 800:1 for head-on viewing and 10:1 in the viewing cone of about 45deg. The relaxation time of the shutter does not exceed 2 ms and is the same for all three primary colors

Published in:

Journal of Display Technology  (Volume:3 ,  Issue: 1 )