Display device

A display device comprising:

• a display portion including a plurality of pixels;
• a lens array portion in which light emitted from the plurality of pixels passes through toward plurality of viewpoint areas from which an image is viewed;
• a data compensation circuit configured to generate a compensation image signal by application of a compensation value to an input image signal according to a viewing angle from which the image is viewed, and the input image signal includes luminance information of the plurality of pixels;
• and
• a data driver configured to apply a data voltage to the plurality of pixels according to an image data signal generated based on the compensation image signal generated by the data compensation circuit,
• wherein the lens array portion comprises a lens that provides a local focusing to two or more pixels and a domain corresponding to the lens overlaps two or more pixels, and the lens array portion comprises a plurality of block areas arranged in a row along a center axis of the domain and pixels corresponding to each block area display an image corresponding to different viewpoint areas, and
• the compensation value comprises a first compensation value determined by a ratio of a reference luminance ratio with respect to a luminance ratio of red, the reference luminance ratio is a ratio of a side luminance according to a viewing angle with respect to a front luminance of a reference display device, and the luminance ratio is a ratio of side luminance according to a viewing angle with respect to front luminance of the display device.

A method of operating a display device, comprising:

• providing a display portion including a plurality of pixels, and a lens array portion in which light emitted from the plurality of pixels passes through toward a plurality of viewpoint areas from which an image is viewed;
• determining, by a data compensation circuit, a compensation image signal according to a viewing angle from which the image is viewed, in which an input image signal includes luminance information of the plurality of pixels;
• and
• applying, by a data driver, a data voltage to the plurality of pixels according to an image data signal;
• locally focusing, by a lens of the lens array portion, two or more pixels of the plurality of pixels, and
• applying, by the data compensation circuit, a compensation value to the input image signal according to a viewing angle from a pixel corresponding to a center of the lens to two or more different side directions.