Abstract: A technique of constructing picture elements for a large screen display with improved color quality is described. Existing large screen displays generally make use of a cluster of lamps to form a single pixel. Such a pixel usually consists of four lamps corresponding to the red, green, blue and white colors. Most of these displays have limited color palette as the individual lamp can only be turned on or off and is unable to adjust its intensity. Even if the intensities of each of the color lamps can be adjusted independently, it will not produce a uniformly colored pixel especially when viewed at close distance. We have developed a true-color display device that can be used as a picture element in a large screen display unit. The true-color display device is constructed by mixing the three primary color lights optically before they are transmitted. With this method, a pre-mixed uniform color can be seen even at close range. Using the color mixing theory, an almost infinite range of colors can be simulated.!5
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