Abstract: Disclosed is a tension mask frame assembly manufacturing apparatus for mounting a tension mask on a rectangular frame having: a pair of support frame parts to which mutually facing edges of a tension mask having a rectangular sheet shape are fixed; and a pair of connection frame parts for mutually connecting both ends of the support frame parts. The manufacturing apparatus comprises: a frame loading unit for loading the tension mask frame assembly; a pressing unit for pressing the support frame parts along the direction of the plate surfaces of support frames between both ends thereof; and a control unit for controlling the pressing unit so as to pre-deform the support frames in correspondence to at least a part of the bending deformation amount of the support frame parts according to the weight of the support frame parts and the tension of the tension mask.

Abstract: A method for tensioning a shadow mask includes positioning a first side of a shadow mask into contact with the lower half of a tensioning frame, positioning an upper half of the tensioning frame into contact with a second side of the shadow mask, and clamping the upper half of the tensioning frame to the lower half of the tensioning frame to form a tensioning frame, and rigidly clamping the shadow mask between the two tensioning frame halves. The method also includes elevating the temperature of the tensioning frame to tension the shadow mask.

Abstract: An apparatus (10) for, and method of, placing a plurality of spacers (12) between a parallel opposed anode and cathode (20) of an emissive display includes temporarily securing, by applying a vacuum for example, a first side of one of the anode or cathode to a base (14) having a plurality of electromagnets (16) positioned therein. The electromagnets (16) attract a first side of each of the plurality of spacers (12), thereby positioning each of the spacers (12) in a desired location on a second side of the one of the anode or cathode (20). The spacers (12) may be provided from a shuffling tray (40) having a plurality of openings (42), each opening (42) approximately aligned with one of the electromagnets (16) and shaped so as to present the first side to the electromagnet (16) to the one of the anode or cathode (20).

Abstract: An X-ray light emitting phosphor film (22) such as a CsI film that converts an X-ray to light is formed on an input substrate (21) constituting an input part of an X-ray image detector. A surface portion of the X-ray light emitting phosphor film (22) is irradiated with high-energy light having a wavelength of 500 nm or less. The surface portion of the X-ray light emitting phosphor film (22) is locally sublimated and/or fused to be flattened by the irradiation with the high-energy light. The use of the high-energy light such as a laser beam makes it possible to efficiently and uniformly flatten the surface portion of the X-ray light emitting phosphor film.

Abstract: An aperture grill type display device is provided that displays a picture including two areas whose luminance values are different from each other without vertical stripes. The aperture grill type display device includes an aperture grill to which plural wires are attached. When displaying a picture including a window whose luminance value is higher than that of a desktop, the luminance value of the window is decreased if the energy that electron beams emitted from an electron gun of the display device give to the wires for displaying the window exceeds the energy that the electron beams give to all the wires by a predetermined ratio.

Abstract: To provide a method for manufacturing a color selection electrode structure easily capable of measuring a tension amount of the color selection electrode in the process for manufacturing the color selection electrode structure and a color cathode ray tube using the color selection electrode structure. The color selection electrode is stretched with tension applied in the direction of the shorter axis thereof, and welded and fixed onto the top face that is curved inwardly in the direction of the longer axis of the longer side members. Thereafter, the weight is placed on the color selection electrode so as to allow the color selection electrode to deflect by the load due to the mass of the weight. The deflection amount of the color selection electrode may be measured by using a laser displacement meter and the measured deflection amount of the measured color selection electrode is converted into the tension amount by the correlation graph.

Abstract: A cathode ray tube is provided which includes a panel having a fluorescent surface formed on an inside surface thereof, a tension type shadow mask fitted to the panel with a gap formed therebetween, and a frame. The frame includes two main frames fixed to the tension type shadow mask under tension, and two subframes fixed respectively to ends of the two main frames. A distance between the two main frames between a center part or portion of the main frame and an edge part or portion. To assemble the frame assembly and the shadow mask, the main frames are compressed, the tension type shadow mask is welded thereto, and the compression applied to the main frames is then released. The invention improves a howling characteristic by reducing a vibratory length of the shadow mask and increasing a natural frequency of the center part or portion of the shadow mask.

Abstract: The present invention provides a tension mask having a frequency distribution with improved vibration damping. The tension mask includes a center portion between two edge portions.

Abstract: After assembling a framework in an approximately rectangular form, a basis plane is formed by grinding a bottom surface of the framework. Then, ends of two opposing sides of the framework on a side opposite to the basis plane are cut in a predetermined shape by shearing. The grinding can be carried out by placing the framework on a grinding surface that is running, while applying substantially no pressurizing force other than the self weight of the framework. According to this method, precision of forming end faces of a framework on which a shadow mask is mounted can be improved. Also, working time can be shortened.

Abstract: A mask for a color cathode ray tube (CRT) and a manufacturing method thereof are provided. This mask includes a plurality of strips isolated from each other at predetermined intervals in parallel, and a plurality of bridges for forming slots through which electron beams pass by connecting adjacent strips to each other. In this mask, each of the bridges between adjacent strips has a first curved portion formed on the side from which electron beams come out, and a second curved portion formed on the side upon which electron beams are incident. The first curved portion has a first width in the direction perpendicular to the length direction of the strips, and extends in the length direction of the strips. The second curved portion has a second width that is smaller than the first width in the length direction of the adjacent strips.

Abstract: In a method of manufacturing a color-separating electrode structure for color cathode ray tube, welding is performed by rolling a roller electrode with a rotation shaft being tilted so that an electrode surface of the roller electrode faces to an inside of a substantially rectangular frame, and by pressing a pressing roller to a portion defined as the portion of an outside of a contact portion in which an outer edge portion of an upper surface of the side of the frame is kept in contact with a rear surface of the color-separating electrode, both the roller electrodes and the pressing rollers being rolled together along the contact portion, whereby the color-separating electrode structure having sufficient welding strength can be obtained with higher stability.

Abstract: The color-separating electrode structure for use in a color CRT includes a color-separating electrode body which is substantially rectangular in form and fixed in a tensioned condition to a frame made by a sheet metal bending or flexing process. The frame includes two supporting parts opposed to each other, each of the supporting parts having a flexed portion that extends in parallel to an upper edge and a lower edge of the color-separating electrode body and has a predetermined curvature. The color-separating electrode body is welded to the frame at contact portions thereof each of which is in contact with corresponding one of the flexed portions of the supporting parts.

Abstract: A method and apparatus of maintaining spacing between tension mask strands in a tension mask. The method includes providing a tension mask with strands connecting therebetween and attaching a set of barrier ridge elements to a first side of the strands. Next, the tension mask is tensioned and affixed to a mask frame to form a mask frame assembly.

Abstract: A method for making a shadow mask array is taught. Producing a plurality of shadow mask sections; inspecting the plurality of shadow mask sections to determine which shadow mask sections are acceptable as meeting predetermined criteria; positioning a predetermined number of the acceptable mask sections into predetermined locations relative to one another to form a mask section array thereby distributing any error in individual mask sections across the mask section array; and attaching the individual mask sections of the mask section array to a support structure. The support structure allows for expansion and/or contraction of the individual mask sections of the mask section array while maintaining relative positioning of the individual shadow mask section in the shadow mask array.

Abstract: A method for making a shadow mask array is taught comprising the steps of producing a plurality of shadow mask sections; inspecting the plurality of shadow mask sections to determine which shadow mask sections are acceptable as meeting predetermined criteria; positioning a predetermined number of the acceptable mask sections into predetermined locations relative to one another to form a mask section array thereby distributing any error in individual mask sections across the mask section array; and attaching the individual mask sections of the mask section array to a support structure. The support structure allows for expansion and/or contraction of the individual mask sections of the mask section array while maintaining relative positioning of the individual shadow mask section in the shadow mask array.

Abstract: A color cathode-ray tube (CRT) has an evacuated envelope with an electron gun therein for generating at least one electron beam. The envelope further includes a faceplate panel having a luminescent screen with phosphor elements on an interior surface thereof. A focus mask, having a plurality of spaced-apart first conductive strands, is located adjacent to an effective picture area of the screen. The spacing between the first conductive strands defines a plurality of apertures substantially parallel to the phosphor elements on the screen. Each of the first conductive strands has a substantially continuous insulating material layer formed on a screen facing side thereof. A plurality of second conductive wires are oriented substantially perpendicular to the plurality of first conductive strands and are bonded thereto by the insulating material layer. The insulating material layer is composed of a silicate material.

Abstract: A method and apparatus for applying crosswires to a tension mask. The method includes winding crosswires around various drum assemblies and then using transfer devices to remove sections of crosswires and transfer them to tension mask frame assemblies.

Abstract: A position of an inner surface of a panel (10) is measured with the panel being held, and a position of a main surface of a color selection electrode (30) is measured with a color selection electrode frame (40) being held, so that the measured positional data provide a measured value corresponding to a spacing between the panel inner surface and the main surface of the color selection electrode. In a state that the engaging holes of the supporting members are engaged with dummy pins (200) arranged in a predetermined positional relationship to the panel pins (20) on the condition that the panel is held, the position of the main surface of the color selection electrode is adjusted with respect to engaging holes on the basis of the predetermined positional relationship and the measured value, and supporting members are fixed by welding to the color selection electrode frame.

Abstract: A color cathode-ray tube (CRT) having an evacuated envelope with an electron gun therein for generating an electron beam is disclosed. The envelope further includes a faceplate panel having a luminescent screen with phosphor lines on an interior surface thereof. A focus mask, having a plurality of spaced-apart first conductive lines, is located adjacent to an effective picture area of the screen. The spacing between the first conductive lines defines a plurality of slots substantially parallel to the phosphor lines on the screen. Each of the first conductive lines has a substantially continuous insulating material layer formed on a screen facing side thereof. A plurality of second conductive lines are oriented substantially perpendicular to the plurality of first conductive lines and are bonded thereto by the insulating material layer. A cap layer is formed over the plurality of second conductive lines and the insulating material.

Abstract: A purpose of the present invention is to provide material of an aperture grille used for a color picture tube having excellent yield strength, excellent high temperature creep strength and excellent magnetic characteristic, material of an aperture grille used for a color picture tube for improving an occurrence of cracking during a hot rolling step, a method for producing these material, an aperture grille and a color picture tube with the aperture grille. After adding nickel of 0.01 to 1.75 wt % to low carbon alloy steel including copper of 0.05 to 2.5 wt % and phosphor of 0.001 to 0.4 wt %, material according to the present invention is cold rolled. Then, a precipitation treatment is processed at a temperature of 300 to 700° C. Alternatively, the material is cold rolled and secondary rolled after passing through an intermediate annealing at a temperature of 500 to 800° C. Then, the precipitation treatment is processed.

Abstract: The present invention relates generally to a new metal/ceramic laminate magnet and process thereof. More particularly, the invention encompasses a new process for fabrication of a large area laminate magnet with a significant number of holes, integrated metal plate(s) and electrodes for electron and electron beam control. The present invention also relates to a magnetic matrix display and electron beam source and methods of manufacture thereof.

Abstract: A method and apparatus for applying crosswires to a tension mask. The method includes winding crosswires around various drum assemblies and then using transfer devices to remove sections of crosswires and transfer them to tension mask frame assemblies.

Abstract: A color cathode-ray tube (CRT) has an evacuated envelope with an electron gun therein for generating an electron beam. The envelope further includes a faceplate panel having a luminescent screen with phosphor elements on an interior surface thereof. A focus mask, having a plurality of spaced-apart first conductive strands, is located adjacent to an effective picture area of the screen. The spacing between the first conductive strands defines a plurality of apertures substantially parallel to the phosphor elements on the screen. Each of the first conductive strands has a substantially continuous slightly conductive insulating material layer formed on a screen facing side thereof. A plurality of second conductive wires are oriented substantially perpendicular to the plurality of first conductive strands and are bonded thereto by the slightly conductive insulating material layer.

Abstract: A color picture tube having a tension mask attached to a support frame, wherein the mask if made from a material having a significantly lower coefficient of thermal expansion than the coefficient of thermal expansion of the material of the frame. The frame tensions the mask to have a fundamental resonant frequency of 90 Hz±20 Hz.

Abstract: A shadow mask for color picture tubes has a cathode-side surface covered with a heat-insulating layer, an electron reflecting and absorbing layer, and a heat-emitting cover layer. Some of the electrons are reflected while others are absorbed in the cover layer and transformed to heat, but the heat does not act directly on the mask and is emitted into the interior of the tube. Local temperature differences which particularly occur with high contrast pictures and cause partial doming of the perforated mask are reduced.

Abstract: A shadow mask is arranged to face an inner surface of a substantially rectangular face panel. The shadow mask has a substantially rectangular mask body which has a number of apertures for passing an electron beam, and a rectangular mask frame which supports a peripheral edge portion of the mask body. The mask body is curved in a short axis direction, and is fixed to the mask frame in a state that an internal stress of a direction making small a radius of curvature of the short axis direction is applied.

Abstract: A shadow mask for a color picture tube a thermal includes insulating layer preventing heat transfer to an apertured shadow mask. The side of the mask directed toward the cathode of the color picture tube is coated with a heat-insulating layer including particles having a porous structure. The pores may contain heavy metals or heavy metal compounds so that electron reflection and absorption occurs directly within the layer. The resulting heat is transferred to the interior of the picture tube instead of to the mask.

Abstract: A display device comprising a cathode-ray tube, a conductive plastic film overlaying a screen of the cathode ray tube, and a conductive metal tape which is ultrasonically welded to the plastic film to establish an electric connection between the metal tape and the plastic film.

Abstract: Magnetic shield materials used in color picture tubes which have excellent inner magnetic shield characteristics and an excellent handling strength, method for producing the materials and color picture tubes produced by incorporating the materials are provided. The magnetic shield materials produced by subjecting hot rolled low carbon steel strips essentially consisting of equal to or less than 0.006 weight % of C, equal to or less than 0.002 weight % of N, equal to or less than 0.5 weight % of Mn, 0.5-2.5 weight % of Si, Fe as a balance and unavoidable impurities to a cold rolling and subsequently annealing the cold rolled steel strip at a temperature of 500-700.degree. C. and applying a nickel plating thereto after annealing.

Abstract: A cathode-ray tube consuppress deterioration and reduce unevenness in color of a picture by preventing an electrode element thereof from being twisted. The color cathode-ray tube includes a frame and an aperture grill stretched across and fixed on the frame and having an electrode element. The aperture grill is stretched across and fixed on the frame in a state that the frame is applied with a compressive force and the aperture grill is applied with a tension. In a process of stretching and fixing the aperture grill across and on the frame, of the tension applied to the aperture grill, a maximum tension applied to the electrode element is set within the range from 30% to 85% of a tensile strength of the electrode element.

Abstract: A triple-layered shadow mask for a CRT which comprises a first thin metal plate formed in a shape corresponding to a panel with a multiple electron beam holes and supplied with a first DC voltage, a second thin metal plate formed in a shape corresponding to the panel with a multiple electron beam holes and supplied with a second DC voltage for obtaining focus lens between the first and the second DC voltages, and a dielectric layer for forming an insulating layer using the inorganic materials between said first thin metal plate and the second thin metal plate.

Abstract: A method for fixing to a frame an electrode or a shadow mask for an image receiving tube. The method includes steps for stretching, in opposite directions, supporting ends of a rectangular mask plate having apertures formed between the supporting ends, in order to generate a tensile force having a uniform distribution over the entire surface of the plate. The method also includes pressing inwardly and bending a pair of elastic supporting elements, constituting two confronting sides of a frame, so that a distribution of the pressing force in a direction of each of the sides almost balances with a distribution of the tensile force. The supporting ends of the mask plate are then rigidly fixed to both of the bent supporting elements of the frame. The stretching and pressing forces applied to the mask plate and the frame are then released.

Abstract: A color selecting electrode for a color-picture tube, includes a rectangular frame-shaped frame having a pair of mutually-opposite long sides and a pair of mutually-opposite short sides, and a mask plate which is stretchedly supported on top surfaces of the frame while receiving a resilient spring force exerted from the frame, the long sides having a greater section modulus and a greater rigidity than the short sides. A method of manufacturing the color selecting electrode includes the step of welding, to the frame pressed inward by an equally-distributed force applied to the pair of long sides and the pair of short sides, the mask plate of which four sides are stretched outward by a distributed force which approximately counterbalances the equally distributed force.

Abstract: A color cathode-ray tube 10 has an evacuated envelope 11 with an electron gun 26 therein for generating at least one electron beam 28. The envelope further includes a faceplate panel 12 having a luminescent screen 22 with phosphor lines on an interior surface thereof. A uniaxial tension focus mask 25, having a plurality of spaced-apart first metal strands 40, is located adjacent to an effective picture area of the screen 22. The spacing between the first metal strands 40 defines a plurality of slots 42 substantially parallel to the phosphor lines of the screen. Each of the first metal strands 40, across the effective picture area of the screen, has a substantially continuous first insulator layer 64 on a screen-facing side thereof. A second insulator layer 66 overlies the first insulator layer 64. A plurality of second metal strands 60 are oriented substantially perpendicular to the first metal strands 40 and are bonded thereto by the second insulator layer 66.

Abstract: A shadow-mask color cathode ray tube for producing a high-quality image by preventing the slot width or slot length of an electron-beam passing hole from increasing when a shadow mask is press-molded.

Abstract: The present invention provides a method of making a tensioned focus mask. Such a mask includes a set of parallel strands and a set of parallel wires that are perpendicular to the strands and separated from the strands by insulator means. The method includes attaching the strands to a mask frame and then coating the strands with a first insulator. The first insulator is then cured, and a second insulator is applied to the first insulator. Next, wires are wound over and in contact with the second insulator, by rotating the mask frame and by drawing a continuous wire from a source through a tensioner, while guiding the continuous wire into desired positions overlying the strands. Finally, the second insulator is heated until the wires attach to the second insulator.

Abstract: A method for attaching a stretched damper wire to a cathode ray tube including the steps of locating each end of a damper wire at a first position with respect to a pair of damper springs and welding each end of the damper wire to each of the damper springs while holding the damper wire between each of the damper springs and a welding ribbon. Next, the damper springs are moved to a frame of the cathode ray tube and welded at second positions thereof to upstanding portions of said frame so as to stretch the damper wire between the damper springs on an aperture grill.

Abstract: The present invention relates to a method for pre-stressing the CRT tension mask 24 to induce creep. The method includes the steps of applying a suitable force to the mask material to induce stress therein, heating the mask material to an ultimate temperature, for a sufficient time, while under stress, to induce creep, and cooling the material.

Abstract: The present invention provides an improved color picture tube having a viewing screen and a shadow mask mounted adjacent to the screen. The mask has an apertured contoured portion and a peripheral skirt. The improvement comprises the skirt having a reverse bend therein, wherein a first portion of the skirt that connects with the apertured contoured portion extends away from the screen and a second portion of the skirt more remote from the apertured contoured portion extends towards the screen.

Abstract: A color selecting structure for a TRINITRON cathode-ray tube, in which color phosphor stripes are provided and a single electron gun emits three beams, capable of minimizing vertical fringes that deteriorate the quality of a picture displayed on the screen and of attenuating the vibration of a FAG (framing aperture grille plate), includes a thin plate having a plurality of tape-shaped grid (2a) elements and apertures (2a), and fine wires (3) extended across the surface of the aperture grille plate so as to apply a pressure in the range of 6.73.times.10.sup.-6 lbf., 2.24.times.10.sup.-5 lbf. to each grid element (2a).

Abstract: A method for manufacturing a phosphor screen used in a color CRT takes the steps of multilayering a red phosphor layer, a green phosphor layer, a blue phosphor layer, and a non-luminescent layer being laid between the adjacent color phosphor layer, cutting the multilayered block into filmy pieces toward the thickness, adhering or pressurizing the filmy cut pieces on a glass plate for front panel of the color CRT, and burning the cut pieces. This method makes it possible to efficiently manufacture a high-definition and high-resolution color phosphor screen and form fine RGB stripes. This method, thus, may apply to a small-sized CRT about which the realization of the high-definition and high-resolution color phosphor screen has been difficult.

Abstract: A process of manufacturing a shadow mask includes the steps of preparing a plurality of metal plates having a surface deviation characterized in that its Rsk value is not more than 0.3 .mu.m, preferably less than 0, its Sm value is not less than 60 .mu.m, and its Pc value relative to the band of 1 .mu.m width centered about the center line of a roughness profile is not more than 60/cm, forming a plurality of apertures in each of the plates, registrating and piling up the plates upon each other, annealing the plates piled upon each other, and pressing and molding the annealed metal plates into a predetermined curvature. Each of the metal plates preferably has Ra in the range from 0.1 to 0.7 .mu.m.

Abstract: A method for manufacturing a shadow mask is used for color television picture tubes and the like. The surface of a shadow mask body, made of Fe-Ni type alloy, is ion-nitriding processed so as to make the most of the low thermal expansion property inherent in the alloy. The result is that the color purity degradation caused by the thermal expansion at temperature increases of the mask, and by the resonance of the mask itself, can be prevented, thereby realizing a shadow mask serving to render a highly refined CRT.

Abstract: A component-in-process comprises an ultra-thin foil shadow mask having on at least one side thereof a lamina having a composition and thickness effective to physically support and protect the mask during subsequent processing operations. Such operations include forming apertures in a foil mask blank mounted on a lamina, electroforming a foil mask on a lamina, and etching a mask mounted on a lamina to reduce overall thickness or selectively thin it.

Abstract: A display device having a pattern of conductors recessed on an electrode, thus reducing the risk of the pattern of conductors being damaged such as from a surface scratch. When the pattern of conductors and the plate are separated from each other by an insulating layer, the pattern of conductors screens the insulating layer from the electron beam. The method is characterized in that grooves are formed between the apertures, and an insulating layer and conducting layer are provided on the walls of the apertures and the grooves.

Abstract: A generally rectangular mounting structure for attaching a tensioned foil shadow mask to the flat glass faceplate of a color cathode ray tube (CRT) includes four rails attached at respective ends thereof by means of four corner brackets spot welded to adjacent ends of a pair of rails. Each of the four corners of the rail structure is coated with a frit-based sealant to hermetically seal the corner bracket-rail interface, followed by baking, to prevent the collection of contaminants such as phosphor particles which heretofore collected in gaps between the corner bracket and rail only to later escape and cause CRT rejection or failure.

Abstract: A color selection electrode is suspended in a color display tube from pins which are provided in the corners of the display window. The suspension means comprise a resilient element which is secured to the color selection electrode, and a slide plate slidably secured relative to the flat resilient element rigidly secured to the pin. During the suspension the position of the color selection electrode is adjusted, and the slide plate is rigidly secured to the resilient element.

Abstract: A reusable factory fixture frame is disclosed for use in the manufacture of a color cathode ray tube having a flat faceplate and a tensed foil shadow mask. The frame provides for mounting an in-process shadow mask during photoexposure of an in-process faceplate in a lighthouse. The frame includes a generally rectangular frame structure having grooves thereabout for receiving an edge of the shadow mask. At least one elongatge rod-like member extending lengthwise of and complementarily mating with the grooves temporarily and removably support an in-process shadow mask in tension. The shadow mask is heated and allowed to expand prior to being temporarily and removably supported on the frame, and the shadow mask is allowed to cool and shrink in tension while so being supported to effect tensing of the shadow mask in clamped condition on the frame.

Abstract: A front assembly for a tension mask color cathode ray tube comprises a faceplate having an inner surface thereon for receiving a pattern of luminescent phosphor elements. A foil mask is supported in tension by the faceplate and has a pattern of apertures registered with the pattern of phosphor elements. The assembly is characterized by the faceplate having registration affording means disposed on the external periphery of the faceplate outside the tube vacuum enclosure constructed and arranged to permit repeatable precise registration between said foil mask and said faceplate to facilitate screening the pattern of phosphor elements upon the faceplate inner surface. By having the registration affording means located externally of the tube enclosure, the viewable area of the inner surface is maximized and the faceplate size for a given screen area is reduced.

Abstract: A faceplate assembly for a color cathode ray tube is disclosed that includes a glass faceplate having on its inner surface a centrally disposed phosphor screen. A foil shadow mask is mounted in tension on a mask-support structure of tightly controlled uniform height located on opposed sides of the screen and secured to the inner surface by a devitrified solder glass. The assembly according to the invention has a plurality of spacing elements of tightly controlled uniform height located between the support structure and the inner surface of the faceplate, and extending through the solder glass to provide intimate contact with the inner surface. The tightly controlled uniform heights of the support structure and the spacing elements provide for tightly controlled uniform spacing between the mask and screen throughout the length of the support structure. A process for manufacturing a faceplate assembly according to the invention is also disclosed.