Abstract
Abstract— A 1M‐pixel full‐color projection display with a very simple optical system using a conventional overhead projector has been developed. This display uses the nematic‐cholesteric phase‐transition liquid‐crystal display and a micro‐color‐filter. Moreover, the micro‐color‐filter can be placed outside the liquid‐crystal panel. This simple configuration provides a high‐performance low‐cost color electronic overhead projector. This projection display uses a 9M‐pixel nematic‐cholesteric phase‐transition black‐and‐white liquid‐crystal panel to enable gray shades by spatial dither, resulting in a full‐color projection display. A 12:1 contrast ratio and 2.2‐ms line‐addressing time is achieved.
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