SERIAL CATHODE MAKING METHOD OF ELECTRON GUN

摘要

Fabrication method of directly-heated cathode of electron gun for CRT. The cathode of the electron gun mainly comprises a porous cathode body (11) for being filled with the electron-emitting material and a heater (12) attached to the porous cathode body. The porous cathode body is directly heated by the heat of the heater and emits electrons from the material filled in the pores.