Abstract:
PROBLEM TO BE SOLVED: To provide a dielectric element composed by preventing degradation of an element characteristic by repeated use; and an electron emission element. SOLUTION: This electron emission element 120 being an example of this dielectric element is structured to be operated by applying a predetermined drive electric field to an emitter layer 123. The emitter layer 123 is a dielectric layer containing a PMN-PT-PZ three-component solid solution-based composition as a main constituent, and is formed so that its Curie temperature Tc (°C) satisfies 60≤Tc≤150. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a dielectric composition capable of improving the deterioration of the amount of emitted electrons with time elapsing of an electron emitting element. SOLUTION: The dielectric composition is composed of a PMN-PZ-PT ternary solid solution composition represented by Pb x Bi p (Mg y/3 Nb 2/3 ) a Ti b-z M z Zr c O 3 as a major component and contains Ni equivalent to NiO content of 0.05-2.0 wt.%. In the formula, x is 0.95≤x≤1.05, p is 0.02≤p≤0.1, and y is 0.8≤y≤1.0; (a, b, c) are decimals within a range surrounded by 5 points, i.e. (0.550, 0.425, 0.025), (0.550, 0.150, 0.300), (0.100, 0.150, 0.750), (0.100, 0.525, 0.375), and (0.375, 0.425, 0.200); z is 0.02≤z≤0.10; and M is at least one kind selected from Nb, Ta, Mo, and W. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a display device which is manufactured easily and inexpensively, stabilizes the electron emission characteristics for every solid, and establishes optionally the shape of the electron beam. SOLUTION: The PED is constituted such that signal wires 18a, 18b and scanning wires 18c, 18d are formed in a matrix form on the inner surface 4a of a rear substrate, and a PZT film 24 as the electron emission member corresponding to each intersecting point thereof are formed. The PZT film 24 emits an electron beam in a cross-sectional shape depending on the film shape by applying a voltage between element electrodes 21, 22 connected to the wires. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a new ferroelectric electron ray source and an electron ray formation method in which electron ray is formed sufficiently even in the case the dielectric constant of the ferroelectric is small and voltage resistance is high. SOLUTION: A comb shape electrode 12 is formed on a main surface 11A of a ferroelectric thin film 11 and a flat electrode 13 is formed on the rear face 11B. Then, the main surface 11A of the ferroelectric film 11 is changed to have a semiconductivity. Then, in the state where the assembly comprising the ferroelectric film 11, the comb shape electrode 12, and the flat electrode 13 is arranged in a vacuum atmosphere, a negative voltage is impressed on the comb shape electrode 12 and the ferroelectric film 11 is polarized, and next, a negative impulse voltage is impressed on the flat electrode 13, and an electron ray is emitted from the main surface 11A of the ferroelectric film 11. COPYRIGHT: (C)2006,JPO&NCIPI
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