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Electron emitting element

A technology of electron emission and components, which is applied in the direction of electrical components, discharge tube/lamp parts, circuits, etc., can solve the problems of high voltage application, fluctuation of electron emission characteristics, and small emission electron energy, so as to achieve low voltage, The effect of improving straight-line propagation and reducing cross-modulation distortion

Inactive Publication Date: 2006-12-13
NGK INSULATORS LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Conventional examples of this electron emission element include, for example, Patent Documents 1 to 5, but they have the following problems: because none of them use a dielectric for the material forming the emitter, forming or micromachining is required between opposing electrodes, High voltage must be applied for electron emission, and the panel manufacturing process is complicated and the manufacturing cost is high
[0014] However, since the edge portion of the upper electrode 204 is tightly bonded to the emitter portion 202, there is a problem that the degree of concentration of the electric field is small and the energy required for emitting electrons is small.
In addition, since the electron emission site is limited to the edge portion of the upper electrode 204, there are problems in that the overall electron emission characteristics fluctuate, the electron emission control is difficult, and the electron emission efficiency is low.

Method used

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Examples

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Embodiment Construction

[0088] Below, refer to Figure 1 to Figure 38 Embodiments of the electron emission element of the present invention will be described.

[0089] First, the electron emission element of this embodiment can be used in electron beam irradiation devices, light sources, alternative LEDs, electronic component manufacturing devices, and circuit components in addition to the use as a display.

[0090] The electron beam of the electron beam irradiation device is superior in absorption property in terms of high energy, compared with the ultraviolet rays of the currently popular ultraviolet irradiation device. As an example of application, in semiconductor devices, it has the function of curing the insulating film when stacking wafers; in printing and drying, it has the function of hardening printing ink without spots, and sterilizes medical devices in the state where they are packaged as they are. effect.

[0091] As a light source application, it is suitable for high brightness and hi...

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Abstract

An electron emitting element (10A) is provided with an emitter part (12) composed of a dielectric material, and an upper electrode (14) and a lower electrode (16) whereupon a driving voltage (Va) is applied for electron emission. The upper electrode (14) is formed on an upper plane of the emitter part (12), and the lower electrode (16) is formed on a lower plane of the emitter part (12). The upper electrode (14) is provided with a plurality of penetrating parts (20) from which the emitter part (12) is exposed. In the upper electrode (14), a plane facing the emitter part (12) at a circumference part (26) of the penetrating part (20) is separated from the emitter part (12).

Description

technical field [0001] The present invention relates to an electron emission element having a first electrode and a second electrode formed on a substance forming an emitter. Background technique [0002] Currently, an electron emission device has a cathode electrode and an anode electrode, and is used in various applications such as a field emission display (FED) or a backlight. When used in an FED, a plurality of electron emission elements are arranged two-dimensionally, and a plurality of phosphors facing these electron emission elements are arranged at predetermined intervals. [0003] Conventional examples of this electron emission element include, for example, Patent Documents 1 to 5, but they have the following problems: because none of them use a dielectric for the material forming the emitter, forming or micromachining is required between opposing electrodes, A high voltage must be applied for electron emission, and the panel manufacturing process is complicated an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J1/312
CPCB82Y10/00H01J1/312
Inventor 武内幸久七泷努大和田岩赤尾隆嘉
Owner NGK INSULATORS LTD
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