Abstract:
PROBLEM TO BE SOLVED: To provide an electron-emitting element in which electric power consumed for electron emission is smaller. SOLUTION: The electron-emitting element 10 is provided with a lower part electrode 12, an emitter 13 consisting of dielectrics, and an upper part electrode 14 formed at the upper part of the emitter part 13 so as to oppose to the lower part electrode 12 and to pinch the emitter part 13. A plurality of fine through holes 14c are formed at the upper part electrode 14. The upper part electrode 14 is arranged/constituted at the upper part of the emitter part 13 so that a distance (gap distance) t1 between a lower face of the upper part electrode 14 and an upper face of the emitter part 13 in the vicinity range of the fine through holes 14c will become nearly constant irrespective of the fine through holes 14c. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a piezoelectric-film-type electron emitter of high durability improved in degradation of electron emission quantity caused by repeated use. SOLUTION: This electron emitter 120 includes a substrate 121, a lower electrode 122, an emitter layer 123, and an upper electrode 124. The upper electrode 124 has a plurality of openings 124a formed therein, and an emitter section 125 located on the top surface of the emitter layer 123 is exposed through the openings 124a to a reduced-pressure atmosphere. The electron emitter 120 is configured so that, when a pulse-like drive voltage Va is applied between the lower electrode 122 and the upper electrode 124, electrons are accumulated on the emitter section 125, and thereafter the electrons are emitted toward the reduced-pressure atmosphere. The emitter layer 123 contains a primary component (i.e., a ferroelectric composition) and an additional component. The additional component contains a transition metal oxide of a high oxidation number which serves as an oxidizing agent and is thereby converted into an oxide of a lower oxidation number. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an electron emitting element having the favorable linearity of emitted electrons and a field emission display using the element. SOLUTION: The electron emitting element has an electric field applying part 1 formed by a dielectric, a drive electrode 2 as a first electrode formed on one surface of the field applying part 1 and a common electrode 3 as a second electrode formed on the same surface as the first electrode and forming a slit together with the drive electrode 2 and is formed on a substrate 4. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a dielectric device with higher performance. SOLUTION: An electron emitting element 10A to which the dielectric device of this invention is applied comprises: an emitter section 12 formed of a dielectric; and an upper electrode 14 and a lower electrode 16 to which a driving voltage Va for electron emission is applied. The emitter section 12 is formed by an aerosol deposition method or a sol impregnation method. Inside the emitter section 12, metal is mixed in a dispersed state to such an extent that there is no conduction in the direction of thickness of the emitter section 12. COPYRIGHT: (C)2006,JPO&NCIPI