Abstract:
An electron emission device includes gate electrodes formed on a substrate. The gate electrodes are located on a first plane. An insulating layer is formed on the gate electrodes. Cathode electrodes are formed on the insulating layer. Electron emission regions are electrically connected to the cathode electrodes. The electron emission regions are located on a second plane. In addition, the electron emission device includes counter electrodes placed substantially on the second plane of the electron emission regions. The gate electrodes and the counter electrodes are for receiving a same voltage, and a distance, D, between at least one of the electron emission regions and at least one of the counter electrodes satisfies the following condition: 1(μm)≦D≦28.1553+1.7060t(μm), where t indicates a thickness of the insulating layer.
Abstract:
An electron emission device includes cathode electrodes and gate electrodes formed on a first substrate and crossing each other while interposing an insulation layer. Opening portions are formed at the gate electrodes and the insulation layer while exposing the cathode electrodes. Electron emission sources are formed on the cathode electrodes exposed through the opening portions each with an area smaller than the area of the opening portion. An anode electrode is formed on a second substrate. Phosphor layers are formed on the anode electrode each with long sides proceeding in a first direction and short sides proceeding in a second direction. When the first substrate is viewed from the plan side, the electron emission source satisfies the following condition: a
Abstract:
An electron emitting device includes a first electrode located on a substrate, an insulating layer located on the first electrode, and a second electrode located on the insulating layer. The second electrode has a first surface and a second surface, which are substantially vertical to a direction that the first electrode and the insulating layer are laminated. The first surface of the second electrode is in contact with the insulating layer. A higher potential than that applied to the second electrode is applied to the first electrode to emit an electron from the second surface.
Abstract:
A field emission device and a backlight device using the field emission device includes a cathode electrode and a gate electrode formed in alternating parallel strips on a substrate, a catalytic metal layer arranged on the cathode electrode and adapted to enhance Carbon NanoTube (CNT) growth, and grown CNTs arranged on the catalytic metal layer.
Abstract:
An electron emission device includes first and second substrates facing each other, first electrodes formed on the first substrate, and second electrodes separated from the first electrodes by interposing an insulating layer. The first electrodes have first sub electrodes which with a partially removed portions, and second sub electrodes formed on at least one surface of the first sub electrodes with a transparent conductive material. Electron emission regions are formed on the second sub electrodes within the partially removed portions of the first sub electrodes. The electron emission regions are in surface contact with the second sub electrodes.
Abstract:
A field emission device manufactured by the disclosed method and employed in a display unit includes a glass substrate, an emitter electrode formed on the glass substrate, a carbon nanotube (CNT) emitter formed on the emitter electrode, and a gate stack formed around the CNT emitter. Electron beams are extracted from the CNT emitter and the extracted electron beams are focused onto a given position. The gate stack includes a mask layer that covers the emitter electrode provided around the CNT emitter, a gate insulating layer and a gate electrode sequentially formed on the mask layer, a focus gate insulating layer having double inclined planes facing the CNT emitter on the gate electrode, and focus gate electrode coated on the focus gate insulating layer.
Abstract:
A field emitter device consistent with certain embodiments has a substantially planar conductor forming a gate electrode. A conductive stripe forms a cathode on the insulating layer. An insulating layer covers at least a portion of the surface between the cathode and the gate. An anode is positioned above the cathode. An emitter structure, for example of carbon nanotubes is disposed on a surface of the cathodes closest to the anode. When an electric field is generated across the insulating layer, the cathode/emitter structure has a combination of work function and aspect ratio that causes electron emission from the emitter structure toward the anode at a field strength that is lower than that which causes emissions from other regions of the cathode. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.
Abstract:
The present invention provides a cold cathode electron source and a method for manufacturing the cold cathode electron source. The cold cathode electron source includes a substrate on which are deposited a catalyst metal layer, an insulation layer, and a gate metal layer; a cavity section formed through the catalyst metal layer, the insulation layer, and the gate metal layer; and an emitter realized through a plurality of carbon nanotubes, which are grown from walls of the catalyst metal layer exposed in the cavity section and which have long axes parallel to the substrate. The method includes depositing a catalyst metal layer, an insulation layer, and a gate metal layer on a substrate; forming a cavity section by removing a portion of the gate metal layer, the insulation layer, and the catalyst metal layer using a photolithography process; and forming an emitter by mounting the substrate on a chemical vapor deposition reactor and growing carbon nanotubes in a low temperature atmosphere of 500˜800 degrees Celsius (° C.).
Abstract:
An electron emitter includes an emitter section having a plate shape, a cathode electrode formed on a front surface of the emitter section, and an anode electrode formed on a back surface of the emitter section. A gap is formed between an outer peripheral portion of the cathode electrode and the front surface of the emitter section. The front surface of the emitter section contacts a lower surface of the outer peripheral portion to form a base end as a triple junction. The gap expands from the base end toward a tip end of the outer peripheral portion.
Abstract:
A thermoelectron generating source including a facial main cathode for emitting thermoelectrons by being heated from behind, a filament for heating the main cathode from behind to emit the thermoelectrons, an extraction electrode for extracting the thermoelectrons emitted from the main cathode under an electric field, the extraction electrode being provided near the front of the main cathode, and two deflecting electrodes and disposed on the left and right sides near the front of the extraction electrode to carry the extraction electrode. The potentials of the two deflecting electrodes are kept in a relation VL>VR≧0, where the potential of one deflecting electrode is VL and the potential of the other deflecting electrode is VR.