Aging and saturation effects are also seen for FPs. Efficiency vs voltage, CIE coordinates, persistence at low current densities, phosphor output per particle size, saturation as a function of voltage. With increase in voltage, less saturation is seen because of spreading. Phosphor maintenance is also measured. Mr. Summers felt that there is a need for standardized testing of FP displays.
Particle size is determined by laser scattering.
Measurement of the photoluminescence of the phosphors would be a good starting point for standardization. Discussion on various aids in making reliable standard measurements. Adjournment The Committee moved, seconded, and unanimously agreed to adjourn at 0920 to join discussion on terms and definitions. This meeting was conducted in accordance with the EIA legal guidelines and the manual of organization and procedures.