Abstract
We propose a large parallax barrier by use of aperture grille. Main
advantages of using aperture grille include no reflection and no absorption in
apertures, as well as wide viewing angle. These advantages are investigated with
theoretical calculations and experiments by use of several kinds of LED panels, such
as a fine-pitch LED panel and a 140-inch large LED panel. Limitations of viewing
angle by parallax barrier are analyzed in conventional black stripes on a
transparent substrate type and in aperture grille type.Experimental results show use
of aperture grille increases contrast and reduce reflection on the aperturesurface.
© 2014 Chinese Optics Letters
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