Method and system for spatial-temporal dithering for displays with overlapping pixels

A method for establishing intensity values for a display device, the display device having sub-pixels, the sub-pixels forming overlapping logical pixels, each logical pixel having a center sub-pixel that is adjacent to multiple sub-pixels of the logical pixel, each sub-pixel for displaying red, green, or blue, the method comprising:

• assigning a frame number to each sub-pixel, the frame number indicating when an intensity value for the sub-pixel is to be increased to effect dithering;
• receiving an indication of a color to be displayed at each logical pixel, each color being represented by a red intensity value, a green intensity value, and a blue intensity value, each intensity value having a high depth;
• mapping each high-depth intensity value to a low-depth intensity value and a remainder;
• for each of a plurality of frames,
• for each of the logical pixels,
• for each of the sub-pixels of a logical pixel,
• retrieving the low-depth intensity value and remainder for the sub-pixel;
• and
• adjusting the retrieved low-depth intensity value based on a current frame number, the frame number assigned to the sub-pixel, and the retrieved remainder;
• and
• for each of the sub-pixels of the display device, combining the adjusted low-depth intensity values for the sub-pixels of the logical pixels to generate a final intensity value for the sub-pixel.