Abstract
We improved the image quality of a 3D display by using a step-barrier system. Conventional parallax barrier systems only reduce horizontal resolution; however, the offset structure of a step barrier system distributes the resolution reduction in both horizontal and vertical directions. This was demonstrated by analyzing the Nyquist frequency of the primary colors on one view-point image. Next, by defining the pixel unit, the resolution of each viewpoint image was evaluated. Then, by formulization of the relation between the number of view points and the image quality, an improvement in the resolution balance was proved. Moreover, in a multi-view display, moire can be removed by using a slanting stripe structure instead of an offset structure. A slanting stripe structure removes the non-uniformity of brightness due to the diffraction at the tiny apertures.
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