Method for compensating mura of display device and mura compensation system

A mura compensation system, comprising:

• a display device including a display area having pixels connected to data lines and scan lines, a data driver disposed at the first side of the display area to drive the data lines, and a scan driver disposed together with the data driver at the first side of the display area to drive the scan lines;
• an imaging device configured to acquire luminance of the pixels by capturing the display area as it emits light of a sample gray level;
• and
• a luminance compensation device configured to calculate mura luminance by rotating coordinates of sample areas in which diagonal mura of the display area appears, and calculate a compensation value for each of the sample areas for the sample gray level based on the mura luminance and a luminance distribution of each of the sample areas,
• wherein the scan lines comprise:
• main scan lines extending in a first direction and connected to corresponding pixel rows, respectively;
• and
• sub-scan lines extending in a second direction different from the first direction, and respectively connected to the main scan lines at contact portions of the display area.

A method for compensating for mura in a display device, comprising:

• displaying a predetermined image on the display device;
• measuring an output of the display device;
• detecting a diagonal mura within the measured output of the display device;
• calculating a compensation signal that compensates for the detected diagonal mura;
• and
• storing the calculated compensation signal within a memory of the display device.