CATHODE STRUCTURE OF THE HEATED TYPE IN DIRECT FORM.

摘要

A heated cathode structure in direct form comprises a porous tablet wherein the thermion emitter materials are impregnated, a suspender for the application of electrical energy and a filament wherein an end is fixed to the porous tablet and the opposite end of that is supported fixing to the suspender, wherein a connector portion which has a wider width than that of the filament and fixed to the suspender forms on the opposite end of the filament. Then, the cathode structure is adequate for a color CRT such as a color television o a CRT for industrial used that has a giant screen.