Display device performing multi-frequency driving

A display device comprising:

• a display panel comprising a first partial panel region and a second partial panel region;
• and
• a panel driver to drive the display panel,
• wherein the panel driver is to further determine a first driving frequency for the first partial panel region and a second driving frequency for the second partial panel region,
• wherein, when the first driving frequency and the second driving frequency are different from each other, the panel driver is to further set a boundary portion comprising a boundary between the first partial panel region and the second partial panel region, and to determine a third driving frequency for the boundary portion to be between the first driving frequency and the second driving frequency,
• wherein a boundary reference frequency is determined to be gradually decreased in a direction from one of the first and second partial panel regions driven at a higher one of the first and second driving frequencies to the other one of the first and second partial panel regions driven at a lower one of the first and second driving frequencies,
• wherein a line random frequency is determined randomly with respect to each of a plurality of scan lines comprised in the boundary portion, and
• wherein the third driving frequency is determined as a sum of the boundary reference frequency and the line random frequency.

A display device comprising:

• a display panel including a plurality of partial panel regions;
• and
• a panel driver to drive the display panel,
• wherein the panel driver is to further determine a plurality of driving frequencies for the plurality of partial panel regions, respectively,
• wherein, when a first one of the plurality of driving frequencies for a first partial panel region of the plurality of partial panel regions is higher than a second one of the plurality of driving frequencies for a second partial panel region of the plurality of partial panel regions adjacent to the first partial panel region, the panel driver is to further set a boundary portion comprising a boundary between the first and second partial panel regions and to determine a driving frequency for the boundary portion to be between the driving frequencies for the first and second partial panel regions such that the driving frequency for the boundary portion is lower than the first one of the driving frequencies and is higher than the second one of the driving frequencies,
• wherein each of the plurality of partial panel regions comprises a plurality of pixels, and wherein each of the plurality of pixels comprises:
• a driving transistor to generate a driving current;
• a switching transistor to transfer a data signal to a source of the driving transistor;
• a compensating transistor to diode-connect the driving transistor in response to a scan signal;
• and
• an organic light emitting diode to emit light based on the driving current, and
• wherein, when a still image is displayed in the second partial panel region, a frequency of the scan signal provided to each of the plurality of pixels in the second partial panel region is different from a frequency of the scan signal provided to each of the plurality of pixels in the first partial panel region;
• wherein each of the plurality of pixels further comprises:
• an initializing transistor to provide an initialization voltage to a gate electrode of the driving transistor in response to an initialization signal, and
• wherein, when the still image is displayed in the second partial panel region, a frequency of the initialization signal provided to each of the plurality of pixels in the second partial panel region is different from a frequency of the initialization signal provided to each of the plurality of pixels in the first partial panel region.