Patent ID: 8400384

Claim:
A display device comprising a liquid crystal display panel for displaying an image by spatial light modulation, wherein an image is represented by a plurality of image elements, and comprising means for modifying, in one mode of operation, the respective data values of at least some of the image elements such that when the modified image is displayed in a first scenario using a display panel having a first data value-to-luminance response to a viewer, the image perceived by the viewer through spatial averaging is substantially the same as the original image, and such that when the modified image is displayed in a second scenario using a display panel having a second data value-to-luminance response to a viewer, different to the first data value-to-luminance response, the image perceived by the viewer through spatial averaging is different to the original image, and wherein the first data value-to-luminance response is substantially provided for viewing angles inside a narrow range and the second data value-to-luminance response is substantially provided for viewing angles outside the narrow range.