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Publication of JPS499255B1publicationCriticalpatent/JPS499255B1/ja
H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
H01J1/02—Main electrodes
H01J1/30—Cold cathodes, e.g. field-emissive cathode
H01J1/308—Semiconductor cathodes, e.g. cathodes with PN junction layers