Electroluminescent Display Panel Having Pixel Driving Circuit

A display panel, comprising:

• a light emitting diode including an anode and a cathode;
• and
• a pixel driving circuit which supplies a driving current to the light emitting diode,
• wherein the anode is connected to a first power line to which a high potential voltage is supplied,
• a sub pixel which includes the light emitting diode and the pixel driving circuit further includes:
• a driving element in which a source is connected to a N1 node, a gate is connected to a N2 node, and a drain is connected to a N3 node,
• an emission control circuit connected to the anode and the cathode;
• a capacitor connected to the N2 node and a N4 node;
• a N2 switching circuit connected to the N2 node;
• a N3 switching circuit connected to the N3 node;
• and
• a N1 switching circuit connected to the N1 node or a N4 switching circuit connected to the N4 node, and
• the N3 node is electrically connected to a second power line to which a low potential voltage is supplied.