Futaba Corporation

Futaba Denshi Kogyo Kabushiki Kaisha

Futaba Denshi Kogyo K.k.

Futuba Corporation

Futaba Denshi Kogyo Kabushiki

Yukio Ogawa

Yoshihisa Yonezawa

Hiroaki Kawasaki

Kazuyoshi Ishikawa

Tatsuo Yamaura

Shogo Ishige

Katsutoshi Kougo

Shigeo Itoh

Yasuhiro Nohara

Satoshi Yoshimura

Kiyoshi Morimoto

Hiroshi Watanabe

Mamoru Namikawa

Yoshikazu Iidaka

Katsutoshi Kogo

Hitoshi Toki

Teruo Watanabe

Yoshio Makita

Shigeru Hieda

Katsumi Takayama

Satoshi Uzawa

Akira Inoue

Hiroyuki Suzuki

Katsutoshi Iida

Yuichi Kogure

Yasuo Kuniyoshi

Toru Shibuya

Tetsuaki Tochizawa

Hideo Kikuchi

An electron device such as a fluorescent display tube is provided, wherein a simple ring-less getter can be simply fixed and arranged with a large degree of freedom. The ring-less getter is securely fixed to the inner surface of the glass anode substrate using laser beams. The laser beam is irradiated onto the ring-less getter from outside the anode substrate. Thus, the laser beam passes through the anode substrate thus heating and melting the ring-less getter. The corresponding inner surface of the anode substrate is melted through the heating. In cooling, the portion where the ring-less getter and the anode substrate are in a molten state is solidified, so that the ring-less getter is bonded to the anode substrate. The ring-less getter is shaped arbitrarily through press-working a getter material.

Electron device with ring-less getter, method for affixing ring-less getter, and method for activating the same

In a method for manufacturing an electron tube including a front substrate and a back substrate, a wiring and an electrode are formed on the front substrate and/or the back substrate. A component is mounted on the front substrate and/or the back substrate. A ring-less getter is mounted on at least one of the front substrate, the back substrate and the component. A vessel is assembled and sealed so that the front substrate faces the back substrate. A light is irradiated on the ring-less getter from outside of the sealed vessel, thereby activating the ring-less getter.

Electron tube and a method for manufacturing same

A fluorescent display tube is disclosed. In the fluorescent display tube, linear members, such as, for example, wire grids and filament are sustained in a predetermined height, while both ends of each linear member are welded on a metal layer by ultrasonic. The fluorescent display tube includes a metal spacer for fixing the linear member and holding the linear members in an elevated position so that the dead space within the fluorescent display is reduced. The linear members are bonded on an aluminum thin films formed on the glass substrateby way of the aluminum spacer. The aluminum spacer sustains the linear members in a predetermined height. Aluminum spacer acts as a member for fixing the linear member and as a height level holding member.

Electron tube having linear members

An electron tube includes at least one metal film formed on a base, at least one linear member provided above the base, and at least one additional member for connecting said at least one linear member to said at least one metal film. The at least one linear member is connected to the at least one metal film by welding the at least one additional member to the at least one metal film.

Electron tube and method for producing the same

A fluorescent luminous tube is provided that has a getter mirror film formed in an arbitrary shape by illuminating a laser beam onto a getter. In order to form the getter film, the rectangular ring-less gettermounted on the anode substrateis irradiated with the laser beam L from the outside of the front substrateand thus is evaporated. In this process, when the illumination spot of the laser beam L is moved along the scanning line, the rectangular getter mirror filmis formed around the scanning line. The burnt region, which has the same shape and size as those of the scanning line, is formed using the laser beam L.

Fluorescent luminous tube with getter mirror film

A fluorescent luminous tube includes a vacuumed envelope having two base members, an anode and a cathode installed inside the vacuumed envelope, a first and a second metal layer formed on one of the two base members, a wire shaped member mounted inside the vacuumed envelope, and a first and a second spacer, made of a metal, for supporting the wire shaped member at a predetermined height. One end portion of the wire shaped member is wound around the first spacer to be supported at the predetermined height and is interposed between the first spacer and the first metal layer to be fixed thereto. Further, the other end portion of the wire shaped member is supported at the predetermined height by the second spacer and is fixed to the second metal.

Fluorescent luminous tube having specific support structure for wire shaped member

Electron tube with a ring-less getter

A fluorescent luminous tube includes a plurality of cathode filaments, a multiplicity of a cathode wirings, each cathode wiring including one or more terminal portions and a wiring portion and being formed of a metal layer, and one or more intermediate portions, each being made of a metal layer. The cathode filament is grouped into at least one set of one or more filaments and filaments in each set are connected in series by fixing an end portion thereof on a terminal portion or an intermediate portion by ultrasonic wire bonding or ultrasonic bonding.

Fluorescent luminous tube

A fluorescent luminous device includes a substrate, a plurality of anode electrodes disposed directly on the substrate, fluorescent layers disposed on the anode electrodes, a multiplicity of separators disposed on the fluorescent layers and the substrate, grid electrodes respectively disposed on the separators to form a matrix structure, and an electron-emitting source spaced apart from the fluorescent layers for exciting a fluorescent substance of the fluorescent layers. The fluorescent layer is of a stripe pattern or an array of fluorescent dots. In the latter case, at least a part of each of two neighboring separators is located on one fluorescent dot.

Fluorescent luminous tube and method for producing same

An electron tube such as a fluorescent display tube is provided. Auxiliary linear support members (e.g. linear spacers and linear dampers), which subsidiarily support liner members (e.g. cathode filaments and wire grids), are bonded on a substrate, using ultrasonic welding (without using an adhesive agent (e.g. fritted glass or a conductive paste)). A metal layer (e.g. a thin or thick aluminum film) is formed over the glass substrate. The end of the coil of a cathode filament is securely bonded to the metal layer. A spacer of a metal wire (e.g. aluminum) is ultrasonic welded to the metal layer. The welding is performed with the wedge tool of an ultrasonic welder placed at the position where the spacer is in contact with the cathode filament. A U-shaped recess is left at the welded spot. This recess prevents the cathode filament from being displaced. If necessary, the metal layer is formed over the substrate and the damper of a metal wire (e.g. aluminum) is disposed to prevent the vibration of the cathode filament.

Electron tube and method of manufacturing the same

In a display device including a cathode filament containing a coiled portion and a linear portion thereof and a power feeding member, an end of the coiled portion is fixed to either a substrate made of an insulating material or an insulated support, the power feeding member being installed to contact with the linear portion of the cathode filament.

Display device using filament

An organic electroluminescent device comprises an insulating substrate, a first electrode layer, a second electrode layer, and a number of conductive wiring pads formed on the insulating substrate, wherein at least one of the electrode layers is transparent and the second electrode layer includes a plurality of disjointed electrodes, the disjointed electrodes being grouped into a plural number of groups and at least one of the groups having at least two disjointed electrodes, and an organic layer interposed between the first and the second electrode layers. The disjointed electrodes of each group are electrically connected to each other within said each group via one or more selected wiring pads.

Organic electroluminescent device with disjointed electrodes arranged in groups

A simple and slim double-faced vacuum fluorescent display device has no grid, thereby lowing the power consumption and fabrication cost thereof. Anode electrodes on one of the front plate and the back plate function as grids for anode electrodes on the other one of the front plate and the back plate. The light emitted from anode electrodes is not blocked by grids, thereby enhancing light emitting efficiency thereof.

Double-faced vacuum fluorescent display device and method for driving same

A fluorescent display device of the plane grid type capable of reducing accumulation of charges on an insulating layer, to thereby prevent an electron shading phenomenon and permit electrons emitted from a filament toward anode electrodes to be uniformly spread in a plane-like manner on both sides of the filament. A first substrate is formed thereon with stripe-like thin-film anode electrodes and stripe-like thin-film grids in a matrix-like manner through a thin-film insulating layer. The insulating layer and grids are formed with openings. Phosphors are deposited on portions of the anode electrodes exposed through the openings. The grids are formed into a height equal to or smaller than that of the phosphors. A second substrate is formed thereon with back electrodes for controlling emission of electrons from filaments. Control voltages applied to the back electrodes have a potential gradient given thereto so that a potential difference occurs between a position near the filaments and a position apart therefrom.

Fluorescent display device and method for driving same

A filament core wire capable of being mounted while having tension at a predetermined level applied thereto without an expensive anchor and without applying unnecessary tension thereto. The filament core wire is provided at a part thereof with spring and welded sections. The sections each are covered with a heat-decomposable block element made of acrylic resin or the like. Also, the core wire has a carbonate deposited thereon. The core wire is mounted on a mounting position by removing the block element from the welded section of the wire arranged on the fixing position by heating and then welding the welded section to a fixing spot of the fixing position. Then, block element is removed from the spring section by heating. This permits the filament core wire to be stretchedly arranged at the mounting position while keeping tension applied to the core wire to provide it with elasticity.

Growing community of inventors

Mobara, Japan

Yukio Ogawa