Abstract:
The invention relates to a field-emission electron gun comprising an electron emission tip, an extractor anode, as well as a means for creating an electric-potential difference between the emission tip and the extractor anode. The emission tip comprises a metal tip and an end cone produced by chemical vapour deposition on a nanofilament, the cone being aligned and welded onto the metal tip. The invention can be used for a transmission electron microscope.
Abstract:
L'invention concerne un tube électronique sous vide comprenant au moins une cathode (C) émissive d'électrons et au moins une anode (A) disposées dans une enceinte à vide (E), la cathode présentant une structure planaire comprenant un substrat (Sb) comprenant un matériau conducteur, une pluralité d'éléments nanotube ou nanofil (NT) isolés électriquement du substrat, l'axe longitudinal desdits éléments nanotube ou nanofil étant sensiblement parallèle au plan du substrat, et au moins un premier connecteur (CE1) relié électriquement à au moins un éléments nanotube ou nanofil de manière à pouvoir appliquer à l'élément nanofil ou nanotube un premier potentiel électrique (V1).
Abstract:
The present invention relates to a method for manufacturing a field emitter electrode, in which nanowires are aligned horizontally, perpendicularly or at any angle between horizontal and perpendicular according to the direction of a generated electromagnetic field. More particularly, the present invention relates to a method for manufacturing a field emitter electrode having nanowires aligned horizontally, perpendicularly or at any angle between horizontal and perpendicular according to the direction of a generated electromagnetic field, the method comprising the steps of diluting nanowires in a solvent, dispersing the resulting solution on a substrate fixed to the upper part of an electromagnetic field generator, and fixing the nanowires aligned in the direction of an electromagnetic field generated from the electromagnetic field generator. According to the present invention, a high capacity field emitter electrode having high density nanowires aligned according to the direction of a generated electromagnetic field can be fabricated by a simple process and nanowires can be used as positive electrode materials for field emission displays (FEDs), sensors, electrodes, backlights and the like.
Abstract:
PROBLEM TO BE SOLVED: To provide a boron nitride nanotube paste composition, an electron emitting source manufactured using the same, an electron emitting element including the same, and a backlight device and an electron emitting display device applying the same. SOLUTION: The boron nitride nanotube paste composition comprises 100 pts.wt boron nitride nanotubes, 250-1,000 pts.wt glass frit, 500-1,000 pts.wt filler 500, 1,000-2,000 pts.wt organic solvent, and 2,000-3,000 pts.wt binder polymer. The electron emitting element comprises the electron emitting source which is formed using the boron nitride nanotube paste composition. It embodies a longer life and has the effects of improving the uniformity of picture elements. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
A field emission cathode device includes a substrate and a carbon nanotube structure. The substrate includes a first surface. The carbon nanotube structure defines a contact body and an emission body. The contact body is contacted to the first surface of substrate. The emission body is curved away from the first surface. The carbon nanotube structure includes a number of carbon nanotubes joined end to end from the contact body to the emission body to form a continuous structure.
Abstract:
The object of the present invention is to enable the optical axis of an electron beam of a field emission electron gun mounting thereon an electron gun composed of a fibrous carbon material to be adjusted easily. Moreover, it is also to obtain an electron beam whose energy spread is narrower than that of the electron gun. Further, it is also to provide a high resolution electron beam applied device mounting thereon the field emission electron gun. The means for achieving the objects of the present invention is in that the fibrous carbon material is coated with a material having a band gap, in the field emission electron gun including an electron source composed of a fibrous carbon material and an electrically conductive base material for supporting the fibrous carbon material, an extractor for field-emitting electrons, and an accelerator for accelerating the electrons. Moreover, it is also to apply the field emission electron gun to various kinds of electron beam applied devices.
Abstract:
A field emission electron source (10) includes a conductive base (12), a carbon nanotube (14), and a film of metal (16). The conductive base includes a top (122). One end (142) of the carbon nanotube is electrically connected with the top of the conductive base. The other end (144) of the carbon nanotube extends outwardly away from the top of the conductive base. The film of metal is formed on the nearly entire surface of the carbon nanotube and at least on the portion of the top of the conductive base proximate the carbon nanotube. A method for manufacturing the described field emission electron source is also provided.