CATHODE FOR CATHODE-RAY TUBE HAVING HIGH CURRENT DENSITY AND LONG LIFE

摘要

PURPOSE: A cathode for a cathode-ray tube is provided to have a high current density and a long lifetime and to improve yield. CONSTITUTION: A cathode for a cathode-ray tube comprises a cathode pellet formed from a sintered body which is obtained by sintering a mixture containing at least a nickel powder and a powder of electron emission agent by hot isostatic pressing, and a cathode pellet support member on which the cathode pellet is attached to form a cathode pellet assembly(30), wherein the cathode pellet support member is a bottom plate which covers only a bottom surface of the cathode pellet.