Driving controller, display apparatus including the same and method of driving display panel using the same

A display apparatus comprising:

• a display panel configured to display an image based on input image data;
• a driving controller configured to generate a data signal based on the input image data, the driving controller comprising:
• a logo determiner configured to determine whether or not the input image data includes a logo;
• a logo grayscale value calculator configured to calculate a logo grayscale value of a logo area corresponding to the logo in response to the input image data including the logo;
• a light emitting element life expectancy determiner configured to determine a life expectancy of a light emitting element corresponding to the logo area;
• a compensation reference grayscale value generator configured to determine a compensation reference grayscale value according to the life expectancy of the light emitting element corresponding to the logo area;
• a logo luminance compensator configured to compare the logo grayscale value to the compensation reference grayscale value to determine whether or not to compensate a luminance of the logo area;
• and
• a data driver configured to convert the data signal to a data voltage and to output the data voltage to the display panel,
• wherein the logo determiner is configured to determine that the input image data includes the logo in response to a fixed image being maintained over a reference time period and a size of the fixed image being included in a reference size range.

A method of driving a display panel, the method comprising:

• determining whether or not input image data includes a logo;
• calculating a logo grayscale value of a logo area corresponding to the logo in response to the input image data including the logo;
• determining a life expectancy of a light emitting element corresponding to the logo area;
• determining a compensation reference grayscale value according to the life expectancy of the light emitting element corresponding to the logo area;
• comparing the logo grayscale value to the compensation reference grayscale value to compensate a luminance of the logo area;
• generating a data signal based on the input image data having the compensated luminance of the logo area;
• converting the data signal to a data voltage;
• and
• outputting the data voltage to the display panel,
• wherein the input image data is determined to include the logo in response to a fixed image being maintained over a reference time period and a size of the fixed image being included in a reference size range.