1. A display panel for a 3-dimensional display device, the display panel comprising: a plurality of unit pixels arranged in a matrix form having a row and column, each unit pixel including a plurality of sub-pixels, said plurality of unit pixels being alternately arranged with each other and forming each of a plurality of pixels for a viewer's left eye and pixels for the viewer's right eye, wherein at least one unit pixel has a different arrangement of sub-pixels than another unit pixel.