Pixel and display device having the same

A display device, comprising:

• a display panel including a plurality of pixels each connected to a data line, a gate line, a first power voltage line, and a second power voltage line;
• a gate driver configured to supply a gate signal to the gate line;
• a data driver configured to supply a data signal to the data line;
• and
• a power supply unit configured to supply a first power voltage to the first power voltage line and supplies a second power voltage to the second power voltage line,
• wherein each of the plurality of pixels includes:
• a light emitting diode which includes a first electrode and a second electrode;
• a driving transistor connected between a second node corresponding to the first electrode of the light emitting diode and a third node corresponding to the first power voltage line configured to supply a first power voltage and generating a driving current flowing to the second power voltage line configured to supply a second power voltage through the light emitting diode from the first power voltage line;
• a switching transistor connected between a first node corresponding to a gate electrode of the driving transistor and the data line and is turned on in response to the gate signal;
• a storage capacitor connected between the first node and the second node;
• and
• a protection circuit connected between the second electrode of the light emitting diode and the second power voltage line,
• wherein the protection circuit includes an auxiliary electrode and a protection transistor which are connected in series.

A display device, comprising:

• a display area displaying an image and a non-display area located outside the display area and accommodating various signal lines or pads;
• a light emitting diode including a common electrode and disposed in the display area;
• a driving circuit connected to the light emitting diode;
• and
• a protection circuit configured to compensate for a deviation of a voltage drop for the display area and connected between the common electrode and a low potential power voltage line,
• wherein the protection circuit and includes an auxiliary electrode and at least one protection transistor connected with the protection circuit in series, and
• wherein the auxiliary electrode is connected between the common electrode and the low potential power voltage line, and the protection transistor is connected between the auxiliary electrode and the low potential power voltage line.