Pixel circuit, display device including the pixel circuit and electronic device including the pixel circuit

A display device comprising:

• a display panel including a pixel circuit;
• a gate driver, which outputs a gate signal including a write gate signal to the pixel circuit;
• an emission driver, which outputs an emission signal to the pixel circuit;
• a data driver, which applies a data voltage to the pixel circuit;
• and
• a driving controller, which controls the gate driver, the emission driver and the data driver,
• wherein the pixel circuit includes:
• a first transistor including a control electrode connected to a first node, a first electrode connected to a second node and a second electrode connected to a third node;
• a second transistor, which applies the data voltage to the first node in response to the write gate signal;
• a third transistor, which applies a first power voltage to the second node in response to the emission signal;
• a fourth transistor, which connects the third node and a fourth node in response to a reset signal;
• a fifth transistor, which applies an initialization voltage to the fourth node in response to a bias signal;
• and
• a light emitting element including a first electrode connected to the fourth node and a second electrode, which receives a second power voltage,
• wherein the emission signal toggles between a first voltage level and a second voltage level,
• wherein the first voltage level is higher than the second voltage level,
• wherein the reset signal toggles between a third voltage level and a fourth voltage level,
• wherein the third voltage level is higher than the fourth voltage level, and
• wherein the third voltage level is lower than the first voltage level.

An electronic device comprising:

• a display panel including a pixel circuit;
• a gate driver, which outputs a gate signal including a write gate signal to the pixel circuit;
• an emission driver, which outputs an emission signal to the pixel circuit;
• a data driver, which applies a data voltage to the pixel circuit;
• a driving controller, which controls the gate driver, the emission driver and the data driver based on an input control signal;
• and
• a processor, which outputs the input control signal,
• wherein the pixel circuit includes:
• a first transistor including a control electrode connected to a first node, a first electrode connected to a second node and a second electrode connected to a third node;
• a second transistor, which applies the data voltage to the first node in response to the write gate signal;
• a third transistor, which applies a first power voltage to the second node in response to the emission signal;
• a fourth transistor, which connects the third node and a fourth node in response to a reset signal;
• a fifth transistor, which applies an initialization voltage to the fourth node in response to a bias signal;
• and
• a light emitting element including a first electrode connected to the fourth node and a second electrode, which receives a second power voltage,
• wherein the emission signal toggles between a first voltage level and a second voltage level,
• wherein the first voltage level is higher than the second voltage level,
• wherein the reset signal toggles between a third voltage level and a fourth voltage level,
• wherein the third voltage level is higher than the fourth voltage level, and
• wherein the third voltage level is lower than the first voltage level.