Pixel circuit and electronic apparatus including the same

A pixel circuit comprising:

• a light emitting element;
• a first switching element including a control electrode connected to a second node, a first electrode connected to a cathode electrode of the light emitting element and a second electrode connected to a third node;
• a second switching element including a control electrode connected to a first node, a first electrode connected to the second node and a second electrode which receives a second power voltage;
• a third switching element including a control electrode which receives a gate signal, a first electrode which receives a data voltage and a second electrode connected to the first node;
• a driving element including a control electrode which receives a reference voltage, a first electrode connected to the third node and a second electrode which receives the second power voltage;
• a first capacitor including a first electrode which receives a ramp signal and a second electrode connected to the first node;
• and
• a second capacitor including a first electrode which receives an emission signal and a second electrode connected to the second node.

An electronic apparatus comprising:

• a display panel comprising a pixel;
• a data driver which outputs a data voltage to the pixel;
• a gate emission driver which outputs a gate signal and an emission signal to the pixel;
• a ramp driver which outputs a ramp signal to the pixel;
• a driving controller which controls the data driver, the gate emission driver and the ramp driver;
• and
• a processor which outputs input image data and an input control signal to the driving controller;
• wherein the pixel comprises:
• a light emitting element;
• a first switching element including a control electrode connected to a second node, a first electrode connected to a third node and a second electrode connected to an anode electrode of the light emitting element;
• a second switching element including a control electrode connected to a first node, a first electrode which receives a first power voltage and a second electrode connected to the second node;
• a third switching element including a control electrode which receives the gate signal, a first electrode which receives the data voltage and a second electrode connected to the first node;
• a driving element including a control electrode which receives a reference voltage, a first electrode which receives the first power voltage and a second electrode connected to the third node;
• a first capacitor including a first electrode which receives the ramp signal and a second electrode connected to the first node;
• and
• a second capacitor including a first electrode which receives the emission signal and a second electrode connected to the second node.