A field emission device

Abstract

The invention discloses a field emission device which comprises a first shell, a second shell, a first rotating shaft, a second rotating shaft and a gas electron source. The second shell is embedded in the first shell; the first rotating shaft and the second rotating shaft are embedded in the second shell; the first shell sequentially from outside to inside comprises a first substrate, a cathode layer and a first fluorescence layer; the cathode layer and the first fluorescent layer sequentially cover an inner wall of the first substrate; the second shell from outside to inside includes a second fluorescent layer, an anode layer and a second substrate; the anode layer and the second fluorescent layer sequentially cover an outer wall of the second substrate; the first rotating shaft is used for driving the first shell to rotate; the second rotating shaft is used for driving the second shell to rotate; a rotating angle velocity of the first rotating shaft and a rotating angle velocity of the second rotating shaft are not equal; and the gas electron source fills a cavity between the first shell and the second shell. The field emission device reduces the difficulty and cost of a traditional preparation process, and is diversified in color, easy in conversion, simple in structure, high in practicability, and applied in the novel decorative lamp.

Description

technical field [0001] The invention relates to the field of illumination light sources, in particular to a field emission device. Background technique [0002] Field Emission Device (Field Emission Device) is a new light source device. Because of its advantages of uniform, thin and surface light source, it has been widely used in decoration, display, lighting equipment and microwave components, and has huge applications. potential. [0003] The light-emitting principle of the existing field emission device is that in a vacuum environment, the electrons emitted by the electron emitter on the cathode plate are attracted by the positive voltage on the anode plate, thereby accelerating the movement, bombarding the phosphor on the anode plate, and then emitting visible light. However, at present, the preparation technology of field emission devices is difficult, the cost is high, the production efficiency is low, and the finished field emission devices have poor luminous unifor...

AI Technical Summary

Problems solved by technology

However, the current preparation technology of field emission devices is difficult, the cost is high, the production efficiency is low, and the finished field emission devices have poor luminous uniformity.

[0004] Existing field emission devices mainly achieve the purpose of decoration by changing their light color, but the form of common field emission devices used for decorative lamps is still relatively monotonous, can only produce a single color, and usually requires a complex drive system

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