Abstract:
The present invention provides an electron emitting element, comprising: a first electrode; an insulating fine particle layer formed on the first electrode and composed of insulating fine particles; and a second electrode formed on the insulating fine particle layer, wherein the insulating fine particle layer is provided with recesses formed in a surface thereof, the surface facing the second electrode, the recesses each having a depth smaller than a thickness of the insulating fine particle layer, and when a voltage is applied between the first electrode and the second electrode, electrons provided from the first electrode are accelerated in the insulating fine particle layer to be emitted though the second electrode.
Abstract:
PROBLEM TO BE SOLVED: To provide an electron-emitting element having high efficiency of electron emission, of which power consumption is suppressed.SOLUTION: The electron-emitting element includes: a first electrode; an insulating fine particle layer formed on the first electrode and composed of insulating fine particles; and a second electrode formed on the insulating fine particle layer. The insulating fine particle is a monodisperse fine particle. Voltage is applied between the first electrode and the second electrode, and electrons emitted from the first electrode are accelerated through the insulating fine layer to be emitted from the second electrode.
Abstract:
PROBLEM TO BE SOLVED: To provide an electron emission element emitting a sufficient amount of electrons while hardly causing a breakdown.SOLUTION: The electron emission element includes: a first electrode; an insulating fine particle layer formed on the first electrode, consisting of first insulating fine particles and second insulating fine particles larger than the first insulating fine particles, and having a projection formed of the second insulating fine particles arranged on its surface; and a second electrode formed on the insulating fine particle layer, wherein, when a voltage is applied between the first electrode and the second electrode, electrons provided from the first electrode are accelerated in the insulating fine particle layer to be emitted from the second electrode via the projection.
Abstract:
PROBLEM TO BE SOLVED: To enhance electron emission efficiency of an electron emission element and prevent the element from damage. SOLUTION: The electron emission element has an amorphous electron supply layer (4), an insulator layer (5) formed on the electron supply layer (4), and an upper electrode (6) formed on the insulator layer (5), and emits electrons when an electric field is applied between the electron supply layer (4) and the upper electrode (6). Moreover, the electron emission element has a recess (7), which is formed by cutting the upper electrode (6) and the insulator layer (5) to expose the electron supply layer (4), and a carbon layer (8) with a dome-shaped part (8a), covering the upper electrode (6) and the recess (7) to be in contact with an edge part (4c) of the exposed surface (4a) of the electron supply layer (4), rising at an inside part (4b) of the exposed surface (4a) of the electron supply layer (4), and having a cavity (8b) in a space with the electron supply layer (4). COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an electron emitting element capable of controlling the value of a current flowing in an electron accelerating layer and an amount of electron emission by adjusting the resistance value of the electron accelerating layer and a generated amount of ballistic electrons, and excellent in energy efficiency. SOLUTION: This electron emitting element 1 includes the electron accelerating layer 4 formed of a particulate layer containing at least an insulator particulate. In this electron emitting element 1, a relation between an electron emission current value per unit area Ie [A/cm 2 ] and an element resistance value per unit area R [Ω cm 2 ] obtained by dividing a voltage impressed between an electrode substrate 2 and a thin electrode 3 by the value of an in-element current flowing between the electrode substrate 2 and the thin electrode 3 during operation is expressed by Ie = αR -0.67 , and the coefficient α is within a range of not less than 2.0×10 -6 , and the electron emission current value Ie is not less than 1.0×10 -9 . COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an electron emitting element inexpensively manufacturable without having a problem of dielectric breakdown in an insulator layer. SOLUTION: In this electron emitting element 1, an electron accelerating layer 4 provided between an electrode substrate 2 and a thin film electrode 3 is formed of a particulate layer containing insulator particulates 5, and basic dispersants 6 are contained in the particulate layer. COPYRIGHT: (C)2011,JPO&INPIT