Pixel circuit and display apparatus having the same

A pixel circuit comprising:

• a driving switching element;
• a data initializer configured to initialize a voltage of a control electrode of the driving switching element to a first initialization voltage based on a data initialization gate signal;
• a data writer configured to write a data voltage to the control electrode of the driving switching element based on a data write gate signal;
• an organic light emitting element;
• an organic light emitting element initializer configured to initialize an anode electrode of the organic light emitting element to a second initialization voltage based on an organic light emitting element initialization gate signal;
• and
• a light emitting controller configured to control an emission of the organic light emitting element based on an emission signal,
• wherein the organic light emitting element initializer comprises:
• a control electrode configured to receive the organic light emitting element initialization gate signal;
• an input electrode configured to receive the second initialization voltage;
• an output electrode connected to the anode electrode;
• and
• a conductive layer opposite to the control electrode of the organic light emitting element initializer, and configured to receive a compensation control signal that is different from the organic light emitting element initialization gate signal,
• wherein the data writer comprises a first data writer comprising a control electrode configured to receive the data write gate signal, an input electrode configured to receive the data voltage, and an output electrode connected to an input electrode of the driving switching element,
• wherein the data writer further comprises a second data writer comprising a control electrode configured to receive the data write gate signal, an input electrode connected to an output electrode of the driving switching element, and an output electrode connected to the control electrode of the driving switching element,
• wherein the second data writer comprises a (3-1)-th switching element and a (3-2)-th switching element that are connected in series,
• wherein the (3-1)-th switching element comprises a control electrode configured to receive the data write gate signal, an input electrode connected to an output electrode of the (3-2)-th switching element, and an output electrode connected to the control electrode of the driving switching element, and
• wherein the (3-2)-th switching element comprises a control electrode configured to receive the data write gate signal, an input electrode connected to the output electrode of the driving switching element, and the output electrode connected to the input electrode of the (3-1)-th switching element.

A display apparatus comprising:

• a display panel comprising a plurality of pixels;
• a gate driver configured to output a gate signal to the display panel;
• a data driver configured to output a data voltage to the display panel;
• and
• an emission driver configured to output an emission signal to the display panel,
• wherein at least one of the pixels comprises:
• a driving switching element;
• a data initializer configured to initialize a voltage of a control electrode of the driving switching element to a first initialization voltage based on a data initialization gate signal;
• a data writer configured to write the data voltage to the control electrode of the driving switching element based on a data write gate signal;
• an organic light emitting element;
• an organic light emitting element initializer configured to initialize an anode electrode of the organic light emitting element to a second initialization voltage based on an organic light emitting element initialization gate signal;
• and
• a light emitting controller configured to control an emission of the organic light emitting element based on the emission signal,
• wherein the organic light emitting element initializer comprises:
• a control electrode configured to receive the organic light emitting element initialization gate signal;
• an input electrode configured to receive the second initialization voltage;
• an output electrode connected to the anode electrode;
• and
• a conductive layer opposite to the control electrode of the organic light emitting element initializer, and configured to receive a compensation control signal that is different from the organic light emitting element initialization gate signal to shift a threshold voltage of the organic light emitting element initializer.