in 3D DLP sets use "offset-diamond pixel layout", where the mirrors form a "checkerboard pattern" array. Also, the image overlap inherent in the use of wobulation eliminates the 'screen door' effect common on other fixed pixel displays such as plasma and LCD, but may in some implementations also create some reduction in sharpness. Wobulation was used by a number of TV manufacturers, including Hewlett-Packard, Mitsubishi, RCA, Samsung, and Toshiba. References External links Hewlett-Packard Wobulation Explanation at Popular Science Printing