公开(公告)号：EP0730780A4

公开(公告)日：1996-07-22

申请号：EP94905336

申请日：1993-12-06

Applicant: MICROELECTRONICS AND COMP TECH

Inventor： KUMAR NALIN ,  XIE CHENGGANG

IPC: H01J1/304 ,  H01J31/12 ,  H01J61/067 ,  H01J63/06 ,  H01J19/24 ,  H01J1/30

CPC classification number: H01J1/304 ,  H01J31/127 ,  H01J61/0677 ,  H01J63/06 ,  H01J2201/304 ,  H01J2201/30426 ,  H01J2201/30457 ,  H01J2329/8625

Abstract: A field emission cathode includes a layer of conductive material (14) and a layer of amorphic diamond film (12), functioning as a low effective work-function material, deposited over the conductive material to form emission sites. The emission sites each contain at least two sub-regions having differing electron affinities.