PHOSPHOR SELECTION CONSTRAINTS IN APPLICATION OF GATED FIELD-EMISSIONMICROCATHODES TO FLAT-PANEL DISPLAYS

The major issues and tradeoffs surrounding phosphor selection for fiel d-emission flat panel displays are identified. The two main classes of commercially available phosphors applicable to flat panel displays ar e contrasted, and the major physical, electrical, chemical and optical factors effecting phosphor selection are discussed. The implications of screen layering designs and cathode materials are described as they relate to phosphor characteristics. Resolution requirements for displ ays severely limits the maximum anode voltage, which in turn forces sp ecific phosphor choices. Possible solutions to these limitations are e xplored.