Abstract: The present application discloses an OLED display device. The OLED display device includes: a plurality of first Sub-pixels displaying a first color; a plurality of second sub-pixels displaying a second color; and a plurality of third sub-pixels displaying a third color. Areas of the third sub-pixels are greater than areas of the first sub-pixels, and are greater than areas of the second sub-pixels. The first sub-pixels and the second sub-pixels are alternately arranged in first columns; the third sub-pixels are arranged in second columns which are adjacent to the first columns; a distance between two third sub-pixels which are immediately adjacent to each other in a second column is a first distance, a distance between a first sub-pixel and a second stab-pixel which are alternately arranged in a first column is a second distance, and the first distance is smaller than the second distance.