The dispenser cathode heats the electron emitting material uniformly and has a structure for welding a cavity reservior (1) and a sleeve (2) easily. A flange expanded toward the outer direction of upper edge circumference of the cavity reservior is formed and a flange for easy welding of the cavity reservior and the sleeve is formed on the upper edge circumference of the sleeve.
申请公布号
KR920003961(B1)
申请公布日期
1992.05.18
申请号
KR19890019188
申请日期
1989.12.22
申请人
SAM SUNG ELECTRON DEVICES CO., LTD.
发明人
JOO, KYU - NAM;CHONG, JONG - IN;CHAE, JONG - SUH;RHO, HWAN - CHOL