Display apparatus and method of displaying three dimensional image
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A display apparatus includes a display panel, a barrier panel, and a barrier panel controller. The display panel includes a plurality of pixel columns divided into a first pixel column groups and a second pixel column groups based on a selection signal used to determine a focal length of a three-dimensional image. The barrier panel forms a plurality of first barrier patterns spaced apart from each other and a plurality of second barrier patterns spaced apart from each other. The barrier panel controller controls a distance between the first barrier patterns and a distance between the second barrier patterns based on the selection signal.