Display device, luminance compensation circuit thereof and luminance compensation method

A luminance compensation method for a display device, the display device comprising:

• a display region;
• and
• a peripheral region located on a periphery of the display region,
• wherein the display region comprises a first pixel region and a second pixel region, a pixel density of the second pixel region is lower than a pixel density of the first pixel region;
• the luminance compensation method comprises:
• obtaining first light-emitting luminance information of the first pixel region and second light-emitting luminance information of the second pixel region;
• and
• adjusting a power supply signal of the first pixel region and/or a power supply signal of the second pixel region, respectively, according to the first light-emitting luminance information of the first pixel region and the second light-emitting luminance information of the second pixel region,
• wherein the power supply signal comprises a first power supply signal, the first power supply signal is configured to generate a drive signal for driving pixels to emit light,
• wherein the power supply signal further comprises a second power supply signal, and a cathode of each pixel in the display device is connected to the second power supply signal, and
• wherein when the power supply signal comprises the first power supply signal and the second power supply signal, the adjusting the power supply signal of the first pixel region and/or the power supply signal of the second pixel region, respectively, comprises:
• when it is determined that light-emitting luminance of the first pixel region is lower than light-emitting luminance of the second pixel region according to the first light-emitting luminance information of the first pixel region and the second light-emitting luminance information of the second pixel region;
• increasing a voltage value of the first power supply signal of the first pixel region and/or decreasing a voltage value of the first power supply signal of the second pixel region;
• and
• decreasing a voltage value of the second power supply signal of the first pixel region and/or increasing a voltage value of the second power supply signal of the second pixel region.