公开(公告)号：WO1986003331A1

公开(公告)日：1986-06-05

申请号：PCT/JP1985000643

申请日：1985-11-19

Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. ,  MURATA, Toshikazu ,  TAKESAKO, Yoshinobu ,  TAKAHASHI, Masayuki

Inventor： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

IPC: H01J29/04

CPC classification number: H01J29/028 ,  H01J29/04 ,  H01J31/126 ,  H01J2329/863 ,  H01J2329/864 ,  H01J2329/8645 ,  H01J2329/8655

Abstract: A plate-like electron gun of a picture display device which utilizes the emission of thermions and which is used in the field of video information instruments. An electrode on the back of the electron gun comprises a plate-like back electrode (12) which has a conductive film (12a) formed on the surface thereof and which is disposed maintaining a predetermined distance from a plurality of line cathodes (2), and a plurality of spacers (13) that are arranged among said plurality of line cathodes (2), that are secured to said back electrode (12) at the ends on one side, and that have a conductive film (13a) formed on the surfaces thereof. This structure enables the electron gun to be easily manufactured. Further, electric charges are prevented from generating, the electric field is stabilized, and no variance develops in the brightness on the anode surface.