Display device and method of compensating pixel degradation of the same
A display device includes a display panel including a first pixel that emits light with a first luminance that is lower than target luminance and a second pixel that emits light with a second luminance that is higher than the target luminance, a sensor configured to measure a first characteristic of a first light emitting element in the first pixel and a second characteristic of a second light emitting element in the second pixel, and a data compensator configured to calculate a degradation amount of the second pixel based on the first characteristic and the second characteristic.
1. A method of compensating for pixel degradation of a display device that comprises a first pixel that emits light with a first luminance that is lower than a target luminance and a second pixel that emits light with a second luminance that is higher than the target luminance, the method comprising:
measuring a first characteristic of a first light emitting element comprised in the first pixel and a second characteristic of a second light emitting element comprised in the second pixel;
receiving a first measured luminance corresponding to the first characteristic and a second measured luminance corresponding to the second characteristic from an external component; and
generating a degradation compensation model based on the first characteristic, the second characteristic, the first measured luminance, and the second measured luminance,
wherein the degradation compensation model represents a relation between a characteristic variation and a luminance variation, the characteristic variation being a characteristic difference between the first characteristic and the second characteristic, and the luminance variation being a luminance difference between the first measured luminance and the second measured luminance, and
wherein the first pixel has a degradation rate lower than a degradation rate of the second pixel, and the second pixel comprises a plurality of pixels adjacent to and around the first pixel and is configured to compensate for a luminance deficiency of the first pixel by emitting light with the second luminance.
2. The method of claim 1 , wherein generating the degradation compensation model comprises:
calculating an initial characteristic difference of the second pixel based on the first characteristic and the second characteristic; and
storing the initial characteristic difference in a memory device.