Pixel circuit, display apparatus having the same, and an electronic device including the display device

A display apparatus comprising:

• a display panel comprising a pixel circuit;
• a gate driver configured to apply a gate signal to the pixel circuit;
• an emission driver configured to apply an emission signal to the pixel circuit;
• and
• a data driver configured to apply a data voltage to the pixel circuit,
• wherein the pixel circuit comprises:
• a first transistor comprising 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 configured apply the data voltage to the first transistor;
• a third transistor connected to the first node and the third node;
• a fourth transistor configured to apply a first power voltage to the second node in response to a first emission signal;
• a fifth transistor configured to apply a voltage of a fourth node to the third node in response to a second emission signal different from the first emission signal;
• a sixth transistor configured to receive the first emission signal;
• a seventh transistor configured to apply a driving current to a light emitting element and connected to the fourth node, the seventh transistor comprising a control electrode connected to the fourth node, a first electrode connected to a fifth node, and a second electrode directly connected to a first terminal of the light emitting element;
• an eighth transistor comprising a control electrode configured to receive an initialization signal, a first electrode configured to receive a light emitting element initialization voltage, and a second electrode connected to the first terminal of the light emitting element;
• and
• a ninth transistor configured to apply an initialization voltage to the fourth node,
• wherein the light emitting element configured to emit light based on the driving current,
• wherein the light emitting element initialization voltage is different from the initialization voltage,
• wherein the initialization voltage has a low initialization voltage level or a constant current voltage level, and
• wherein the first transistor is a P-type transistor, the second transistor is an N-type transistor, the third transistor is an N-type transistor, and the seventh transistor is a P-type transistor.

An electronic device comprising a display device, the display device comprising:

• a display panel comprising a pixel circuit;
• and
• a display driver configured to drive the display panel,
• wherein the pixel circuit comprises:
• a first transistor comprising 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 configured apply a data voltage to the first transistor;
• a third transistor connected to the first node and the third node;
• a fourth transistor configured to apply a first power voltage to the second node in response to a first emission signal;
• a fifth transistor configured to apply a voltage of a fourth node to the third node in response to a second emission signal different from the first emission signal;
• a sixth transistor configured to receive the first emission signal;
• a seventh transistor configured to apply a driving current to a light emitting element and connected to the fourth node, the seventh transistor comprising a control electrode connected to the fourth node, a first electrode connected to a fifth node, and a second electrode directly connected to a first terminal of the light emitting element;
• an eighth transistor comprising a control electrode configured to receive an initialization signal, a first electrode configured to receive a light emitting element initialization voltage, and a second electrode connected to the first terminal of the light emitting element;
• and
• a ninth transistor configured to apply an initialization voltage to the fourth node,
• wherein the light emitting element is configured to emit light based on the driving current,
• wherein the light emitting element initialization voltage is different from the initialization voltage,
• wherein the initialization voltage has a low initialization voltage level or a constant current voltage level, and
• wherein the first transistor is a P-type transistor, the second transistor is an N-type transistor, the third transistor is an N-type transistor, and the seventh transistor is a P-type transistor.