Abstract: A method for making phosphor ink is provided which uses ultrasonic vibrations to remove surface defect layers from phosphor particles and to quickly and uniformly disperse the phosphor particles throughout a slurry. Propagation of low frequency vibration through the slurry generates cavitation, causing distortion and then removal of the surface defect layer, and propagation of high frequency vibration through the slurry causes the particles to be dispersed quickly and uniformly throughout the slurry. In this manner, a quantity of light generated in the phosphor and corresponding luminance of a PDP is increased.

Abstract: In a method for making phosphor ink and a system using the same, by generating ultrasonic vibrations, phosphor particles mixed in a slurry can be dispersed, and surface defect layers formed on the phosphor particles can be removed. Accordingly, the method for making phosphor ink and the system using the same are capable of increasing a quantity of light generated in the phosphor, increasing luminance of a PDP and dispersing phosphor particles quickly and uniformly.