Optical compensating system and method

An optical compensation device, comprising:

• a camera configured to generate a photographed image of a display panel displaying a test image;
• a data converting module configured to convert a first photographed image of a first area of the display panel including an overlapping area and a second photographed image of a second area of the display panel including the overlapping area into luminance data;
• a camera gamma value generating module configured to generate a camera gamma value from the second photographed image;
• a reference grayscale value generating module configured to generate a reference grayscale value of the overlapping area using the camera gamma value;
• a corrected luminance value generating module configured to generate a corrected luminance value of the overlapping area by applying weights on the basis of a position to the reference grayscale value;
• a compensation data generating module configured to generate compensation data using the corrected luminance value;
• and
• a weight table configured to store the weights.

A display device, comprising:

• a display panel including a plurality of subpixels having a light emitting element;
• a gate driving circuit configured to supply a plurality of scan signals to the display panel;
• a data driving circuit configured to supply a data voltage to the display panel;
• a memory configured to store compensation data;
• and
• a timing controller configured to compensate for the data voltage using the compensation data,
• wherein the compensation data is generated by:
• generating a first photographed image for a first area of the display panel including an overlapping area;
• generating a second photographed image for a second area of the display panel including the overlapping area;
• extracting a camera gamma value for the second area;
• calculating a reference grayscale value in the overlapping area, using the camera gamma value for the second area;
• generating a corrected luminance value of the overlapping area by applying a weight on the basis of a position to the reference grayscale value;
• and
• generating a compensation data from the corrected luminance value.