Patent ID: 8520062

Claim:
A display apparatus comprising: a display panel which displays a two-dimensional image and comprises: a plurality of pixels arranged in a matrix, each pixel comprising a plurality of sub pixels; and a black matrix between sub pixels adjacent to each other; and an optical member on the display panel, comprising a plurality of lenses elongated in a first direction, and arranged in a second direction perpendicular to the first direction, each lens including a plurality of focal points and configured such that at least two pixels of the display panel correspond to one three-dimensional pixel, wherein the lenses divide the two-dimensional image of the display panel into left and right eye images, wherein a width of a sub pixel in the second direction and a width of the black matrix provided between adjacent sub pixels in the second direction have a ratio of M:N, in which the M and N are numbers greater than or equal to 1, wherein each lens has J focal points, in which J is a greatest natural number satisfying an equation: J≦M+N, and a portion of the plurality of focal points overlaps one of the sub pixels, and a remaining focal point overlaps the black matrix adjacent to the one of the sub pixels in the second direction.