Sony Corporation

Kyocera Corporation

Tsuneo Muchi

Tsunenari Saito

Kenichi Ozawa

Kano Shimizu

Yoji Kono

Akio Ohkoshi

Shigenori Tagami

Kiichi Ueno

Masatake Hayashi

Yukinobu Iguchi

Kunihide Shikata

Koji Saita

Minoru Ohzeki

Hiroaki Ishiguro

Kenichi Nagae

Koichiro Sumi

Yoshio Matsumoto

Yoshiyuki Noguchi

Masaki Hayashi

Toshihiko Uemura

Kimizo Igarashi

Tomohisa Asano

Shinichi Soyama

Jin Mizuguchi

Isamu Michiba

Tamihaura Masatoki

Katsumi Takigawa

A cathode ray tube including a color selecting, electrode having a plurality of metal tapes; a rectangular frame for holding the color selecting electrode under tension; a plate spring having one end fixed to the frame and the other end having an engaging hole; and a panel having a pin for engaging the engaging hole of the plate spring, the panel being held to the frame by the plate spring; wherein a resonance frequency of the plate spring is different from a resonance frequency of the metal tapes. Since the resonance frequency of the plate spring is different from the resonance frequency of the metal tapes, possible resonance of the metal tapes with a large amplitude by the vibrations of the plate spring due to external vibrations applied to the cathode ray tube can be prevented. Therefore, even though the color selecting electrode has a fine pitch with a large screen and a high definition, the cathode ray tube has vibration resistance to prevent color deviation or the like due to the vibrations.

Method for reducing resonant frequency vibrations in a cathode ray tube

A resistance element which is formed on a substrate by resistors and which divides and supplies high voltage to an electron gun of a cathode ray tube, wherein part or all of the substrate is covered by a high resistance conductive material layer as a topmost layer, and a cathode ray tube having the same.

Resistance element and cathode ray tube

An electron gun without deviation of diameter between grids, having a good object point diameter shape, and having a high cut-off voltage, which is cheap and has high performance, and a cathode ray tube provided with the same. The electron gun is provided with a spacer of a columnar shape which has surfaces facing each other on its two end surfaces, a beam aperture penetrating the spacer between the end surfaces, and conductive films provided on the two end surfaces, in which at least the circumferential wall of the beam aperture is constituted by a high resistance conductive material, the conductive films being used to constitute the grids and the beam aperture being constituted as an aperture for an electron beam.

Electron gun having spacer placed between first and second electrode

An aluminous sintered product comprising 70 to 96% by weight of an alumina component and 4 to 30% by weight of additives, said additives including at least the one selected from oxides of elements of the Group 5a of periodic table and at least the one selected from oxides of metals of the iron family and oxides of manganese, titanium, calcium, magnesium, chromium and silica, and said aluminous sintered product exhibiting a volume resistivity of from 1.times.10.sup.7 to 1.times.10.sup.13 .OMEGA.-cm over a temperature range of from 25.degree. to 75.degree. C. and an absolute value of the temperature coefficient of volume resistivity of not larger than 1.8%/.degree.C. under the application of high voltages. The sintered product is used as antistatic part such as conveyer arm, handling jig, tweezers for holding wafers and the like that must not be electrostatically charged in an apparatus for producing semiconductors, and as resistance substrate, electrically conducting material, contact, heater, part in vacuum tubes, and part for electron guns in a CRT such as of TVs and the like.

Alumina sintered product

The printing apparatus has a holding cylinder in which communication holes for communicating an external portion and an internal portion are made and a transfer pad which covers the outer surface of the holding cylinder at ordinary times in a detachable manner, expands upon pressure being applied via the above communication holes when the interior of the holding cylinder is pressurized, and contracts and returns to its original state when the pressure is released. Ink is adhered to the outer surface of the expandable/contractable transfer pad. The transfer pad is inserted in the contracted state into a cylindrical hole of an object to be printed. Pressure is applied from the inside of the transfer pad to cause it to expand and cause the outer surface of the transfer pad to press against the inner surface of the cylindrical hole and thereby transfer the ink adhered to the outer surface of the pad to the inner surface of the cylindrical hole.

Printing apparatus and method for printing the inner surface of a

In a method of coating a curved panel in a cathode ray tube, by placing on the inner surface of a panel having a curved surface a screen frame of a boat-shaped configuration across the bottom of which a screen printing screen is stretched; and by moving a squeegee pushed against the surface of the screen so that ink coated on the surface of the screen passes through the screen and prints on the inner surface of the panel, a fluorescent screen having a good and even film is fabricated on the inner surface of the cathode ray tube panel having a curved face, by a screen printing. In the method, electro-conductive terminals for electro-deposition are not required, steps are reduced, production costs are reduced, and production quality is stabilized.

Method and apparatus for use in producing cathode ray tube

Apparatus for use in producing cathode ray tube

A main lens member for an electron gun comprises at least one high electrical resistance layer formed of a higher electrical resistance material sandwiched between low electrical layers which are laminated together to form a main line of an electron gun.

Luminated main lens member for an electron gun

In an electron gun for a CRT in which a plurality of cylindrical electrodes are arranged and fixed in series to control a path of electron beams emitted from a cathode, a cylindrical support member is disposed between at least two adjacent cylindrical electrodes so that the two cylindrical electrodes are arranged coaxially. One end portion of the cylindrical support member and one cylindrical electrode are fixed to each other by fitting the former into the latter or vice versa, and the other end portion of the cylindrical support member and the other cylindrical electrode are fixed to each other by fitting the former into the latter or vice versa.

Electron gun for CRT

Fluorescent display apparatus with first, second and third grid plates

A cathode ray tube apparatus having a metal body with heat radiation effect which is located at least at a front periphery of a front panel of the cathode ray tube, a transparent panel located at the front of the front panel and facing the front panel with a predetermined distance therebetween, the metal body abutting the front periphery of the front panel and a periphery of the transparent panel to form a space therein; and transparent coolant sealed in the space.

Cathode ray tube apparatus

An improved means for incorporating an electron gun and stem assembly into the neck of a cathode ray tube wherein the stem is engaged with a metal collar while providing a groove therebetween, a thermally insulating fusible adhesive having an initial melting point lower than that of the stem is introduced into the groove, an end portion of the neck of the cathode ray tube is inserted into the groove, and the entire assembly is bonded together by means of fusion of the thermally insulating adhesive.

Method of fixing an electron gun assembly into the neck of a cathode ray

Nonaqueous suspension for electrophoretic deposition of powders is disclosed which includes suspension consisting of ketonic solvent, nitrocellulose dissolved therein and powders suspended therein, strong acid, and strong base. In this case, the strong acid and the strong base both are added to the suspension such that conductivity of the suspension becomes 1 to 30 .mu. /cm.

Growing community of inventors

Kanagawa, Japan

Tsuneo Muchi