公开(公告)号：US20170263411A1

公开(公告)日：2017-09-14

申请号：US15508932

申请日：2014-12-19

申请人： KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

发明人： Eun Goo KANG ,  Seok Woo LEE ,  Hon Zong CHOI

IPC分类号： H01J29/84 ,  H01J29/00 ,  H01J29/04

CPC分类号： H01J29/84 ,  H01J29/00 ,  H01J29/006 ,  H01J29/04 ,  H01J37/063 ,  H01J2229/0069 ,  H01J2229/4831

摘要： Disclosed is an electron beam emission device comprising a housing which defines a space in which electron beams are accelerated, and has an opening at the other side thereof through which the electron beams are emitted; a cathode which is disposed at one side in the housing, and emits the electrons; an anode which is positioned in the housing so as to be spaced apart from the cathode toward the other side, and accelerates the electrons emitted from the cathode; and an insulation holder which insulates a portion between the cathode and the housing, and fixes the cathode, wherein the cathode has a surface which faces the anode and is formed concavely to have a gradient, and a rim of the surface of the cathode, which has the gradient, is formed to be rounded.