Methods of fabricating display screens using electrophoretic deposition

Abstract

In one aspect, the invention encompasses a method of fabricating a display screen. Phosphor molecules are electrophoretically deposited onto a substrate in a first solution having a first hydroxide ion concentration. The deposited phosphor molecules are then rinsed with second solution having an hydroxide ion concentration greater than the first hydroxide ion concentration. In another aspect, the invention encompasses a method of depositing phosphor molecules over selected regions of a substrate. Conductive regions are formed over portions of a substrate while non-conductive regions are left over other portions of the substrate. Phosphor molecules are electrophoretically deposited onto the conductive regions of the substrate in a first solution having a first hydroxide ion concentration. The substrate is then rinsed with a second solution having a second hydroxide ion concentration. The second hydroxide ion concentration is greater than the first hydroxide ion concentration. After the rinsing, the deposited phosphor molecules are dried. In yet another aspect, the invention encompasses a method of forming an FED device.

Dependencies are inferred from the claim text.