A light emitting device includes a substrate and a plurality of pixel rows. The pixel rows are arranged on the substrate. Each of the pixel rows includes a first sub-pixel row having a plurality of first sub-pixels, a second sub-pixel row having a plurality of second sub-pixels, and a third sub-pixel row having a plurality of third sub-pixels. In the mth pixel row, each first sub-pixel includes a first structure layer, the first structure layers are separated from each other and each corresponds to one first sub-pixel. In the (m+n)th pixel row, the first sub-pixels include a first common structure layer, the first common structure layer corresponds to a plurality of first sub-pixels in a same row. The first structure layer and the first common structure layer commonly act as an organic functional layer or an electrode layer, and m, n are each a positive integer.