Driving circuit and display device using the same

A display device comprising:

• a display panel including a plurality of pixels and being operated by frames, the frames including at least one refresh frame, a period of the at least one refresh frame varies based on a refresh rate;
• a scan driver configured to supply a scan signal, the scan driver arranged at one side or both sides of the display panel;
• and
• a light emission signal driver configured to supply a light emission signal, the light emission signal driver arranged at another side of the display panel;
• wherein each of the plurality of pixels comprises:
• an electroluminescent device;
• a driving transistor configured to drive the electroluminescent device;
• and
• a NMOS switching transistor diode-connected to the driving transistor,
• wherein the frames include a first frame having a first refresh rate and a second frame having a second refresh rate different from the first refresh rate,
• wherein the light emission signal driver is configured to change a duty ratio of the light emission signal, the duty ratio of the light emission signal during the first frame is different from the duty ratio of the light emission signal during the second frame,
• wherein a first bias voltage supplied during the first frame is different from a first bias voltage supplied during the second frame, and
• wherein the frames comprise at least one refresh frame and at least two hold frames that follow the at least one refresh frame.