公开(公告)号：DE50112861D1

公开(公告)日：2007-09-27

申请号：DE50112861

申请日：2001-09-11

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： GAERTNER GEORG F ,  RAASCH DETLEF ,  GOODHAND CHRISTOPHER J ,  VAN DER HEIDE PETRUS A ,  LEE TIMOTHY J ,  BARRAT DAVIS S

IPC: H01J1/14 ,  H01J29/04

Abstract: The invention relates to a cathode ray tube equipped with at least one oxide cathode comprising a cathode carrier having a cathode base of a first cathode metal and having a covering layer of ultrafine metal particles that contain nickel. The oxide cathode also comprises a cathode coating of an electron-emitting material containing a particle-particle composite of oxide particles and metal particles. The oxide particles comprise an oxide selected among the oxides of scandium, yttrium and the lanthanoids cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium, and an alkaline earth oxide selected among the group consisting of the oxides of calcium, strontium and barium, and the metal particles contain a second cathode material selected from the group consisting of Ni, Co, Ir, Pd, Rh and Pt. The invention also relates to an oxide cathode.

公开(公告)号：DE60137305D1

公开(公告)日：2009-02-26

申请号：DE60137305

申请日：2001-09-06

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： GAERTNER GEORG F ,  VAN DER HEIDE PETRUS A ,  JOHNSTONE WYNDHAM M

IPC: H01J1/142 ,  H01J1/20 ,  H01J29/04

Abstract: A cathode ray tube provided with at least one oxide cathode comprising a cathode carrier with a cathode base of a cathode metal and a cathode coating of an electron-emitting material containing a particle-particle composite material of oxide particles of an alkaline earth oxide selected from the group formed by the oxides of calcium, strontium and barium, and oxide particles having a first grain size distribution of an oxide selected from the group formed by the oxides of scandium, yttrium and the lanthanoids, and oxide particles having a second grain size distribution of an oxide selected from the group formed by the oxides of scandium, yttrium and the lanthanoids. The invention also relates to an oxide cathode.