Phosphors for full-color microtips fluorescent displays

Cathodoluminescence studies in the range from 150 to 800 V have demonstrated specificities of MFD (microtip fluorescent display) phosphor requirements as compared with CRTs (much higher acceleration voltage) and hot cathode vacuum fluorescent displays (lower acceleration voltage). Sulfide phosphors have been selected as potential primaries and used in 6-in full-color prototypes operating in a specific addressing mode using sequential excitation of the red, green, and the phosphor stripes. In this way, the feasibility of full-color MFDs has been demonstrated. Present work on phosphor materials, processing of powders, and outgassing in cells leads one to expect significant improvements in resolution, luminance, and lifetime of full-color displays.<>