Patent ID: 6624586
Filing Date: 2003-09-23
Classification: G09G,H01J

Abstract:
An electron source comprising:an electron source substrate which has on a substrate a plurality of row-direction wiring lines, a plurality of column-direction wiring lines, insulating layers formed at intersections between the row-direction wiring lines and the column-direction wiring lines, a plurality of electron emitting devices connected to the row-direction wiring lines and the column-direction wiring lines, and getters arranged on the wiring lines; a circuit for sequentially applying a selection voltage to the plurality of row-direction wiring lines; and a controlled current application circuit for applying a controlled current, so as to emit a desired amount of electrons, to the plurality of column-direction wiring lines, wherein changes in the getters over time lead to changes in the resistance of the wiring line on which the getters are arranged, and wherein the controlled constant current application circuit applies a predetermined current regardless of the resistance of the wiring line on which the getters are arranged.