公开(公告)号：ZA7505552B

公开(公告)日：1977-03-30

申请号：ZA7505552

申请日：1975-08-29

Applicant: RCA CORP

Inventor： LEVINE J

IPC: H01J1/304 ,  H01J3/02 ,  H01J9/02 ,  H01J29/04 ,  H01J29/52 ,  H01J31/12 ,  H01J37/073 ,  H01J63/00 ,  H01L

CPC classification number: H01J29/52 ,  H01J1/3042 ,  H01J3/022 ,  H01J9/025 ,  H01J63/00 ,  H01J2893/0031

公开(公告)号：ZA755552B

公开(公告)日：1977-03-30

申请号：ZA755552

申请日：1975-08-29

Applicant: RCA CORP

Inventor： LEVINE J

IPC: H01J1/304 ,  H01J3/02 ,  H01J9/02 ,  H01J29/04 ,  H01J29/52 ,  H01J31/12 ,  H01J37/073 ,  H01J63/00 ,  H01L

Abstract: A non-thermionic field emitting device includes at least one pyramidal shaped field emitting element on one surface of an electrically conductive substrate. At least one needle-like projection is located on the tip of the pyramidal shaped field emitting element. An electron extracting electrode is mounted in parallel spaced relation to and is electrically insulated from the surface of the substrate having the field emitting element thereon. The electron extracting electrode has at least one aperture therein, the aperture being positioned substantially coaxially with a corresponding pyramidal shaped field emitting element.