ELECTRODE FOR ELECTRON SOURCE, METHOD FOR PRODUCING THE SAME, AND ELECTRONIC TUBE USING THE SAME

摘要

PURPOSE: An electrode for electron source, method for producing the same, and electronic tube using the same are provided to improve the current distribution percentage by increasing the percentage of anode current in the total current if a space between an electron drawing electrode and the electrode for the electron source is narrow. CONSTITUTION: An electrode(1) for an electron source comprises a substrate(2), an electron emitting source area(4) formed on the substrate, and a shield area(3) surrounding the electron emitting source area. The shield area is formed of a material that does not produce an electron emitting source when the electron emitting source is produced on the electron emitting source area by a dry method.