Abstract
A novel micro-grooved structure of lightguides and a sequential driving
scheme of light sources were demonstrated in achieving comparable image qualities
of 3-D displays to that of 2-D displays. The modified distribution of micro-grooves
not only locates viewing cones for respective eyes but also suppresses the
moiré pattern, which might occur when a periodic micro-grooved structure
and a color filter are superimposed. The configuration of lightguides for
a 1.8-in liquid crystal display (LCD) panel can yield acceptable 3-D perceptions
at the viewing distance of 7–23 cm and the brightness uniformity of
greater than 83%. In addition, the driving scheme of light sources in synchronization
with parallax images can project images to the viewer's respective eyes sequentially.
With the refreshing sub-frame rate of 190 Hz and double displaying parallax
images, the image crosstalk of 3-D perceptions can be efficiently reduced
for an LC response time of 7.0 ms.
© 2007 IEEE
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