Display apparatus and method of driving display panel using the same

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

• operating a rendering process determining a grayscale value of a pixel of the display panel from input image data;
• and
• displaying an image based on the grayscale value of the pixel,
• wherein the display panel includes a first row first color pixel and a first row second color pixel, which are disposed in a first row, and a second row first color pixel and a second row second color pixel, which are disposed in a second row,
• wherein one of the first row first color pixel and the second row first color pixel is a normal pixel, and the other of the first row first color pixel and the second row first color pixel is a viewing angle control pixel,
• wherein one of the first row second color pixel and the second row second color pixel is the normal pixel, and the other of the first row second color pixel and the second row second color pixel is the viewing angle control pixel,
• wherein a grayscale value of the first row first color pixel is the same as a grayscale value of the second row first color pixel,
• wherein a grayscale value of the first row second color pixel is the same as a grayscale value of the second row second color pixel,
• wherein the rendering process determines grayscale values of the pixels such that the grayscale value of the first row first color pixel is the same as the grayscale value of the second row first color pixel, and the grayscale value of the first row second color pixel is the same as the grayscale value of the second row second color pixel,
• wherein the rendering process prevents a color change defect in which colors are perceived differently from a front viewing angle and from a side viewing angle, thereby enhancing a display quality of the display panel,
• wherein the rendering process determines the grayscale value of the first row first color pixel and the grayscale value of the second row first color pixel to be the same, and the grayscale value of the first row second color pixel and the grayscale value of the second row second color pixel to be the same, even when the input image data for the first row first color pixel and the second row first color pixel are different, and even when the input image data for the first row second color pixel and the second row second color pixel are different.