公开(公告)号：EP0985220A4

公开(公告)日：2002-11-27

申请号：EP98924767

申请日：1998-05-26

Applicant: CANDESCENT INTELLECTUAL PROP

Inventor： SPINDT CHRISTOPHER J ,  OBERG STEPHANIE J ,  HAVEN DUANE A ,  BARTON ROGER W ,  LEARN ARTHUR J ,  BASCOM VICTORIA A

IPC: H01J3/18 ,  H01J1/304 ,  H01J3/02 ,  H01J9/02 ,  H01J9/50 ,  H01J31/12

CPC classification number: H01J9/025 ,  H01J3/022 ,  H01J2329/00

Abstract: An electron-emitting device utilizes an emitter electrode (12) shaped like a ladder in which a line of emitter openings (18) extend through the electrode. In fabricating the device, the emitter openings can be utilized to self-align certain edges, such as edges (38C) of a focusing system (37), to other edges, such as edges (28C) of control electrodes (28), to obtain desired lateral spacings. The self-alignment is typically achieved with the assistance of a backside photolithographic exposure operation. The ladder shape of the emitter electrode also facilitates the removal of short-circuit defects involving the electrode.