1. An organic light emitting display device, comprising: a plurality of pixels configured to form n pixel columns, the plurality of pixels each comprising at least three sub-pixels; and a data driver configured to supply a data signal to the sub-pixels through data lines, wherein a defective pixel of the plurality of pixels comprises a dark sub-pixel and three sub-pixels, normal pixels of the plurality of pixels comprise sub-pixels positioned on a same sub-pixel column as the sub-pixels of the defective pixel, and the defective pixel and the normal pixels are positioned on an i-th pixel column of the n pixel columns.