Display substrate, display panel and display device

A display device comprising a display panel, wherein the display panel comprises a display substrate, the display substrate comprising,

• a plurality of pixel groups arranged in a first direction, wherein
• each of the pixel groups at least comprises a first pixel column and a second pixel column arranged sequentially along the first direction;
• the first pixel column comprises one first display pixel or a plurality of the first display pixels arranged in a second direction intersecting with the first direction;
• the second pixel column comprises one second display pixel or a plurality of the second display pixels arranged in the second direction;
• and
• an outline of a display area of the display substrate comprises a first outline section not parallel to either the second direction or the first direction;
• and
• wherein the display panel is one of a liquid crystal display panel, an organic light-emitting-diode display panel and a light-emitting-diode display panel.