Display device and driving method thereof

A display device comprising:

• a display panel having a first non-folding region, a folding region, and a second non-folding region which are defined on a plane and including a plurality of pixels each connected to a plurality of data lines and a plurality of scan lines;
• a data driving circuit configured to drive the plurality of data lines;
• a scan driving circuit configured to drive the plurality of scan lines;
• and
• a driving controller configured to alternatively determine an operation mode between a normal mode and a multi-frequency mode based on an input signal, and configured to control the data driving circuit and the scan driving circuit in order to drive a first display region of the display panel at a first driving frequency and drive a second display region of the display panel at a second driving frequency while the operation mode is the multi-frequency mode,
• wherein the driving controller is configured to change the operation mode to a compensation mode in which the second display region is periodically driven at the first driving frequency when a duration of the multi-frequency mode is greater than a duration of a reference time.

A method for driving a display device, the method comprising steps of:

• determining an operation mode based on an input signal between a normal mode and a multi-frequency mode;
• driving a first display region at a first driving frequency such that a moving image is displayed in the first display region of a display panel and driving a second display region at a second driving frequency such that a still image is displayed in the second display region of the display panel while the operation mode is the multi-frequency mode;
• counting a duration of the multi-frequency mode;
• and
• changing the operation mode to a first compensation mode in which the second display region is periodically driven at the first driving frequency when the duration is greater than a first reference time.