Abstract: A vacuum fluorescent display includes a front glass member, substrate, phosphor film, an electron-emitting portion, electron extracting electrode, and insulating support member. The front glass member has light transmission properties at least partly. The substrate opposes the front glass member through a vacuum space. The phosphor film is formed on that surface of the front glass member which opposes the substrate and has a predetermined display pattern. The electron-emitting portion is mounted on the substrate to oppose the phosphor film, and has an electron-emitting surface corresponding to the display pattern. The electron extracting electrode is arranged in the vacuum space between the electron-emitting portion and the phosphor film to be spaced apart from the electron-emitting portion by a predetermined distance.

Abstract: Disclosed is an electrode for an electron source, a method for producing the same, and an electronic tube using the same which provide a decreased thickness of an electron emitting source, and an improved current distribution percentage. The electronic tube comprises a substrate, an electron emitting source area formed on the substrate, and a shield area around the electron emitting area. The shield area is formed of a material that does not produce an electron emitting source, when the electron emitting source is produced by a dry method. As a result, if a space between an electron drawing electrode and the electrode for the electron source is narrow, the percentage of anode current increases in the total current, thereby improving the current distribution percentage.

Abstract: A vacuum fluorescent display includes a cathode electrode, grid electrode, anode electrode, at least one envelope, phosphor screen, and cap. The cathode electrode emits electrons. The grid electrode extracts the electrons from the cathode electrode. The anode electrode accelerates the electrons extracted from the cathode electrode. The envelope accommodates the cathode electrode, grid electrode, and anode electrode in a vacuum space and has a phosphor screen plate having light transmission properties. The phosphor screen is formed on an inner surface of the phosphor screen plate of the envelope and adapted to emit light upon bombardment of the electrons accelerated by the anode electrode. The cap is made of an X-ray shielding material and supported outside the envelope so as to surround the phosphor screen plate of the envelope through a gap. The cap has a light exit portion from which the light emitted from the phosphor screen emerges through the phosphor screen plate of the envelope.

Abstract: A flat display includes a glass substrate, field emission type electron-emitting source, a front glass member, an electron extracting electrode, and a phosphor film. The electron-emitting source is mounted on the substrate. The front glass member opposes the substrate through a vacuum space and has light transmittance at least partially. The electron extracting electrode has an electron passing hole and is set away from the electron-emitting source to oppose the substrate. The phosphor film is formed on that surface of the front glass member which opposes the substrate. The electron-emitting source includes a plate-like metal member and a coating film. The plate-like metal member has a large number of through holes and serves as a growth nucleus for nanotube fibers. The coating film is formed of nanotubes that cover a surface of the metal member and inner walls of the through holes. A method of mounting a field emission type electron-emitting source is also disclosed.

Abstract: An electron-emitting source includes a substrate and a coating film. The substrate is made of a material containing a metal serving as a growth nucleus for nanotube fibers as a main component, and has a plurality of through holes. The coating film is constituted by nanotube fibers formed on a surface of the substrate and wall surfaces of the through holes. A method of manufacturing an electron-emitting source is also disclosed.

Abstract: A vacuum fluorescent display includes a front glass member, substrate, control electrode, plate-like field emission type electron-emitting source, mesh-like electron extracting electrode, and phosphor film. The front glass member has light transmission properties at least partly, and the substrate opposes the front glass member through a vacuum space. The control electrode is formed on an inner surface of the substrate. The plate-like field emission type electron-emitting source with a plurality of through holes is arranged in the vacuum space to be spaced apart from the control electrode. The mesh-like electron extracting electrode is formed between the field emission type electron-emitting source and the front glass member to be spaced apart from the field emission type electron-emitting source. The phosphor film is formed inside the front glass member.

Abstract: An electron-emitting source includes a substrate and a coating film. The substrate is made of a material containing a metal serving as a growth nucleus for nanotube fibers as a main component, and has a plurality of through holes. The coating film is constituted by nanotube fibers formed on a surface of the substrate and wall surfaces of the through holes. A method of manufacturing an electron-emitting source is also disclosed.

Abstract: An electron-emitting source includes a substrate and a coating film. The substrate is made of a material containing a metal serving as a growth nucleus for nanotube fibers as a main component, and has a plurality of through holes. The coating film is constituted by nanotube fibers formed on a surface of the substrate and wall surfaces of the through holes. A method of manufacturing an electron-emitting source is also disclosed.

Abstract: Disclosed is an electrode for an electron source, a method for producing the same, and an electronic tube using the same which provide a decreased thickness of an electron emitting source, and an improved current distribution percentage. The electronic tube comprises a substrate, an electron emitting source area formed on the substrate, and a shield area around the electron emitting area. The shield area is formed of a material that does not produce an electron emitting source, when the electron emitting source is produced by a dry method. As a result, if a space between an electron drawing electrode and the electrode for the electron source is narrow, the percentage of anode current increases in the total current, thereby improving the current distribution percentage.

Abstract: A vacuum fluorescent display includes a front glass member, substrate, control electrode, plate-like field emission type electron-emitting source, mesh-like electron extracting electrode, and phosphor film. The front glass member has light transmission properties at least partly, and the substrate opposes the front glass member through a vacuum space. The control electrode is formed on an inner surface of the substrate. The plate-like field emission type electron-emitting source with a plurality of through holes is arranged in the vacuum space to be spaced apart from the control electrode. The mesh-like electron extracting electrode is formed between the field emission type electron-emitting source and the front glass member to be spaced apart from the field emission type electron-emitting source. The phosphor film is formed inside the front glass member.

Abstract: A vacuum fluorescent display includes a cathode electrode, grid electrode, anode electrode, at least one envelope, phosphor screen, and cap. The cathode electrode emits electrons. The grid electrode extracts the electrons from the cathode electrode. The anode electrode accelerates the electrons extracted from the cathode electrode. The envelope accommodates the cathode electrode, grid electrode, and anode electrode in a vacuum space and has a phosphor screen plate having light transmission properties. The phosphor screen is formed on an inner surface of the phosphor screen plate of the envelope and adapted to emit light upon bombardment of the electrons accelerated by the anode electrode. The cap is made of an X-ray shielding material and supported outside the envelope so as to surround the phosphor screen plate of the envelope through a gap. The cap has a light exit portion from which the light emitted from the phosphor screen emerges through the phosphor screen plate of the envelope.

Abstract: A vacuum fluorescent display includes a front glass member, substrate, phosphor film, an electron-emitting portion, electron extracting electrode, and insulating support member. The front glass member has light transmission properties at least partly. The substrate opposes the front glass member through a vacuum space. The phosphor film is formed on that surface of the front glass member which opposes the substrate and has a predetermined display pattern. The electron-emitting portion is mounted on the substrate to oppose the phosphor film, and has an electron-emitting surface corresponding to the display pattern. The electron extracting electrode is arranged in the vacuum space between the electron-emitting portion and the phosphor film to be spaced apart from the electron-emitting portion by a predetermined distance.

Abstract: A flat display includes a glass substrate, field emission type electron-emitting source, a front glass member, an electron extracting electrode, and a phosphor film. The electron-emitting source is mounted on the substrate. The front glass member opposes the substrate through a vacuum space and has light transmittance at least partially. The electron extracting electrode has an electron passing hole and is set away from the electron-emitting source to oppose the substrate. The phosphor film is formed on that surface of the front glass member which opposes the substrate. The electron-emitting source includes a plate-like metal member and a coating film. The plate-like metal member has a large number of through holes and serves as a growth nucleus for nanotube fibers. The coating film is formed of nanotubes that cover a surface of the metal member and inner walls of the through holes. A method of mounting a field emission type electron-emitting source is also disclosed.

Abstract: An electron-emitting source includes a substrate and a coating film. The substrate is made of a material containing a metal serving as a growth nucleus for nanotube fibers as a main component, and has a plurality of through holes. The coating film is constituted by nanotube fibers formed on a surface of the substrate and wall surfaces of the through holes. A method of manufacturing an electron-emitting source is also disclosed.

Abstract: An electron-emitting source of this invention includes at least a carbon nanotube formed from a columnar graphite layer. Electron are emitted from the tip of the carbon nanotube.