Display device and driving method thereof

A display device, comprising:

• a first initialization voltage source to provide a first initialization voltage;
• a second initialization voltage source to provide a second initialization voltage less than the first initialization voltage;
• a first pixel circuit including a first organic light emitting diode and a first driving transistor;
• and
• a second pixel circuit including a second organic light emitting diode that includes an organic material having a band gap different from a band gap of an organic material in the first organic light emitting diode, wherein
• the first pixel circuit is coupled to the first initialization voltage source and the second initialization voltage source,
• the first initialization voltage is applied to a gate terminal of the first driving transistor,
• the second initialization voltage is applied to an anode of the first organic light emitting diode, and
• the second pixel circuit is coupled to a single initialization voltage source.