Display panels and display devices thereof

A display panel, comprising:

• a base substrate;
• a plurality of display units disposed on the base substrate and forming a display region;
• a display region driving circuit disposed on the display region of the base substrate and electrically connected to the plurality of display units so as to drive the plurality of display units;
• and
• a peripheral circuit disposed on the base substrate at a periphery of the display region, the peripheral circuit comprising a plurality of peripheral circuit units arranged side by side in a same direction, the plurality of peripheral circuit units and the plurality of display units being correspondingly arranged respectively;
• wherein a width of the peripheral circuit is smaller than a width of the display region along an arrangement direction of the plurality of peripheral circuit units.