Patent ID: 11887802
Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 9:
10. An electron emitting element comprising:
a laminated structure in which a first electrode, an electron accelerating layer made of an insulation film, a second electrode, and a cover film are laminated in that order, wherein
the second electrode is an electrode which transmits electrons and emits electrons from a surface thereof, and
the cover film is a film which transmits electrons, is a protective film made of a material different from that of the second electrode, and constitutes an electron emission surface thereof, wherein the cover film is (i) a film of one or two or more layers selected from MoS2, MoSe2, WS2, WSe2, GaS, and GaSe, or (ii) a film of one or two more layers selected from SiO2, Al2O3, ZrO, HfO2, and TiO2.