Pixel circuit and display device having the same

A pixel circuit comprising:

• a first driving transistor comprising a gate electrode connected to a first node, a first electrode configured to receive a first power voltage, and a second electrode connected to a second node;
• a second driving transistor comprising a gate electrode connected to the second node, a first electrode connected to a third node, a second electrode connected to the second node, and a back gate electrode connected to the first node;
• a write transistor comprising a gate electrode configured to receive a write gate signal, a first electrode configured to receive a data voltage, and a second electrode connected to the second node;
• an initialization transistor comprising a gate electrode configured to receive an initialization gate signal, a first electrode configured to receive an initialization voltage, and a second electrode connected to a fourth node;
• a storage capacitor comprising a first electrode connected to the first node, and a second electrode connected to the fourth node;
• a compensation transistor comprising a gate electrode configured to receive a compensation gate signal, a first electrode connected to the third node, and a second electrode connected to the first node;
• a first emission transistor comprising a gate electrode configured to receive an emission signal, a first electrode configured to receive the first power voltage, and a second electrode connected to the third node;
• a second emission transistor comprising a gate electrode configured to receive the emission signal, a first electrode connected to the second node, and a second electrode connected to the fourth node;
• and
• a light emitting element comprising a first electrode connected to the fourth node, and a second electrode configured to receive a second power voltage.

A display device comprising:

• a display panel comprising pixel circuits;
• and
• a display panel driver configured to drive the display panel,
• wherein each of the pixel circuits comprises:
• a first driving transistor comprising a gate electrode connected to a first node, a first electrode configured to receive a first power voltage, and a second electrode connected to a second node;
• a second driving transistor comprising a gate electrode connected to the second node, a first electrode configured to receive the first power voltage, a second electrode connected to the second node, and a back gate electrode connected to the first node;
• a write transistor comprising a gate electrode configured to receive a write gate signal, a first electrode configured to receive a data voltage, and a second electrode connected to the first node;
• an initialization transistor comprising a gate electrode configured to receive an initialization gate signal, a first electrode configured to receive an initialization voltage, and a second electrode connected to the second node;
• a storage capacitor comprising a first electrode connected to the first node, and a second electrode connected to the second node;
• and
• a light emitting element comprising a first electrode connected to the second node, and a second electrode configured to receive a second power voltage.