Frequency variable display apparatus

A display apparatus, comprising:

• a first subpixel disposed in a first pixel row and including a first driving transistor having a gate electrode connected to a first node and a source electrode connected to a second node, and a first light emitting element having an anode electrode connected to the second node;
• a second subpixel disposed in a second pixel row and including a second driving transistor having a gate electrode connected to a third node and a source electrode connected to a fourth node, and a second light emitting element having an anode electrode connected to the fourth node;
• a data line configured to transfer a first data voltage to the first node in a first gate-source setting period and transfer a second data voltage to the third node in a second gate-source setting period;
• and
• a reference voltage line configured to transfer a first initialization voltage to the second node in the first gate-source setting period and transfer a second initialization voltage to the fourth node in the second gate-source setting period,
• wherein the first initialization voltage differs from the second initialization voltage.

A display apparatus, comprising:

• a subpixel including a driving transistor and a light emitting element connected to the driving transistor;
• a data line coupled to the subpixel and configured to apply a data voltage to the subpixel in a gate-source setting period;
• a reference voltage line coupled to the subpixel and configured to apply an initialization voltage to the subpixel in the gate-source setting period;
• and
• a control circuit coupled to the subpixel, configured to determine a degradation of the light emitting element or another light emitting element, and configured to adjust the initialization voltage based on the degradation.