Organic light-emitting display panel and display device

An organic light-emitting display panel includes a plurality of pixel defining aperture regions each having a same shape and size. Each pixel defining aperture region is partitioned into six sub-pixel regions, the six sub-pixels has a same area defined by six boundary lines, each boundary line is a connection line running from a center point to an edge of the pixel defining aperture region. The plurality of the pixel defining aperture regions is characterized with three different colors. The six sub-pixels of any one of the pixel defining aperture regions is characterized with a same color. Two adjacent pixel defining aperture regions are characterized with different colors. Three connection lines between the center points of three adjacent pixel defining aperture regions have different colors constitute an isosceles right triangle, and three sub-pixel regions defined by the isosceles right triangle constitute one pixel unit.