Abstract: It is possible to improve a vibration-proof band shaped grid element in a color selecting mechanism. In a color selecting mechanism 1 for a color cathode ray tube, in which a color selecting electrode thin plate (10) having a number of band shaped grid elements (8) and a slit shaped electron beam penetrating aperture (9) formed between respective neighboring grid elements (8), is seam-welded on a frame (6), the ratio of a length a of the above mentioned slit shaped electron beam aperture (9) to a distance (b) from an end portion of the above mentioned electron beam penetrating aperture (9) to a seam-welded orbit (17) or b/a.times.100 is set equal to or less than 2.5 percent.

Abstract: An inner shield for a CRT includes first and second side walls facing each other, each side wall having first and second half-side walls extending inward from ends, wherein a coupling piece is located on the first half-side wall and a coupling hole into which the coupling piece is inserted and bent is located in the second half-side wall, the coupling piece and hole coupling first and second half-side walls to each other.

Abstract: A color selecting electrode for a color cathode-ray tube, which is capable of optimizing a displacement of the color selecting electrode on a phosphor screen side when the color election mechanism is subjected to a thermal effect. The color selecting electrode includes a frame composed of a pair of opposed supporting members and a pair of elasticity imparting members mounted between the supporting members; a large-number of ribbon-like grid elements stretchingly mounted on the frame; and metal members different in thermal expansion coefficient from the supporting members, the metal members being fixed on the supporting members over the entire lengths thereof.

Abstract: The present invention discloses a shadow mask frame assembly for a cathode ray tube comprising a burring formed by bending the open end portion of the mask frame for improving the mechanical intensity of a mask frame, a groove portion formed on predetermined positions of the burring for easily mounting the mask frame inside the face panel without interference between the stud pin and the burring, and a planar perpendicular portion, which is formed on a lower portion of the burring, parallel to an axial direction of the cathode ray tube, to which a skirt portion of the shadow mask is welded.

Abstract: A shadow mask including a perforated portion that has a desired curved surface shape is obtained by pressing a flat mask having electron beam apertures. The press-molded perforated portion of the shadow mask is compressed in its thickness direction in a manner such that it is sandwiched between a first compression mold, having a convex surface that faces a concave surface of the perforated portion in which smaller holes of the electron beam apertures open and a plurality of projections on the convex surface, and a second compression mold, having a smooth concave surface that faces the convex surface of the perforated portion in which larger holes of the electron beam apertures open. In doing this, the perforated portion is locally compressed by means of the projections of the first compression mold, whereby a plurality of recesses are formed on the concave surface side of the perforated portion.

Abstract: A color picture tube having a mask-frame combination which consists of a rectangular frame of a first material and of a mask of a second material, wherein the mask is connected to the frame by a plurality of welding spots, and notches and decoupling slots whose dimensions have a specific ratio with one another are provided at both sides of welding spots at the shorter sides.

Abstract: A color CRT has a shadow mask formed from a bilayer composite of steel and invar. The thicknesses of steel and invar are chosen to take advantage of the lower thermal expansion coefficient of invar and the room temperature formability and higher modulus of elasticity of steel. Such composite masks exhibit reduced doming when compared to steel masks, and can be formed at room temperature.

Abstract: A face panel (12) constituting a part of a vacuum envelope (20) has a substantially rectangular effective area (10), the inner surface of which is formed with a phosphor screen (14). The effective area has a long axis (X) extending in the horizontal direction and a short axis (Y) extending in the vertical direction. The outer surface of the effective area is cylindrically curved with an infinitely large radius of curvature along the long axis and a predetermined radius of curvature along the short axis. The vacuum envelope has arranged therein a shadow mask (15) in opposed relation to the phosphor screen. A mask body of the shadow mask has a substantially rectangular effective surface cylindrically curved with an infinitely large radius of curvature along the long axis and a predetermined radius of curvature along the short axis thereof.

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 color cathode-ray tube including a panel portion, a neck portion and a funnel portion connecting these two portions and having an internal magnetic shield, wherein the internal magnetic shield is disposed in the funnel portion and made of a substantially quadrangular pyramid-shaped frame structure which has a substantially rectangular first opening of small diameter at one end adjacent to an electron gun and a substantially rectangular second opening of large diameter at the other end adjacent to a shadow mask and creased lines formed between corresponding corners of the first and second openings, side faces of the internal magnetic shield opposite to each other being formed with substantially V-shaped notches respectively in the portions thereof adjacent to the first opening, and each of the creased lines of the internal magnetic shield is formed in such a manner that an end of an imaginary line extension of the creased line adjacent to the second opening is located on a projected plane parallel to the sec

Abstract: A method for fabricating an electron multiplier is provided. The method consists of depositing a random channel layer on a substrate such that the random channel layer is capable of producing a cascade secondary electron emission in response to an incident electron in the presence of an electric field.

Abstract: A color picture tube is provided with a glass bulb in which the external surface of the effective display area of the face plate is formed substantially flat and a color selection mask, having the curvature projected toward the face plate, provided opposed to the internal surface of the face plate within the glass bulb. Therefore, the external surface is flat, the mechanical shock resistance characteristic is high, a tension can surely be applied to the color selection mask and moreover vibration of the color selection mask can be prevented even if external vibration is applied thereto.

Abstract: Magnetic shield materials having excellent inner magnetic shield characteristics and an excellent handling strength, method for producing thereof and color picture tubes produced by incorporating the materials are provided. The magnetic shield materials are 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, 0.1-1.5 weight % of Cu, Fe as a balance and unavoidable impurities to a cold rolling and subsequently annealing the cold rolled steel strips at a temperature of 550-850.degree. C.

Abstract: A color cathode ray tube has a shadow mask. The shadow mask is provided with a layer of a material having an average Z number below 20 on the side facing the phosphor screen. The layer is preferable deposited by means of electrodeposition.

Abstract: A CRT comprising a front panel coated with a fluorescent layer on the inner surface thereof, a shadow mask, a mask frame separating the shadow mask at a distance from the front panel, a funnel extending outwardly from the front panel forming an envelope surrounded by the front panel and the funnel, and an inner shield inside such an envelope to shield against earth and other external magnetic fields. The mask frame and the inner shield are welded together at their ends.

Abstract: A thin plate made of an Fe--Ni alloy for electronic parts, which has excellent softening property. The alloy consists essentially of, by weight, 32 to 40% Ni, not more than 0.1% Si, not more than 0.5% Mn and 5 to 50 ppm boron, and balance of Fe and unavoidable impurities. It comprises also trace elements which fulfill the following requirements: "S+O".ltoreq.150 ppm, Al.ltoreq.400 ppm, N.ltoreq.50 ppm, P.ltoreq.100 ppm, an element of IVa, Va and VIa Groups defined in the periodic table being not more than 2000 ppm in amount, and an atomic ratio of "B(atom. %)/N(atom. %)" being not less than 0.8, preferably more than 1.0. The invention also relates to a shadow mask made of the alloy and a cathode-ray tube comprising the shadow mask.

Abstract: A CRT 10 has an evacuated envelope 11 comprising a funnel 15 having a neck 14 and an open end. The funnel 15 is sealed at the open end to a faceplate panel 12 having a luminescent screen 22 formed on a viewing area of an interior surface of the faceplate panel by an electrophotographic screening process. The screen 22 comprises a multiplicity of different color-emitting phosphor elements. A light absorbing matrix 23 has a first portion that includes a multiplicity of openings therein overlying the viewing area of the faceplate panel, and a second portion providing an imperforate border 123 extending beyond the viewing area. The phosphor elements are disposed within the openings in the matrix. A color selection electrode 25 is mounted within the faceplate panel 12, in proximity to the screen 22. An electron gun 26 is centrally disposed within the neck 14 for generating and directing a plurality of electron beams 28 toward the screen 22.

Abstract: Deflection unit for a display tube, comprising a coil support (8) with a saddle-type field deflection coil (12) and a yoke ring (14) surrounding this coil. A form-filling adhesive material (extending between the open portions of the field deflection coil as far as the support) is provided in the free space between the support (8) and the yoke ring (14), with which material the support and the field deflection coil are rigidly connected to the inner surface of the yoke ring. Vibrations of the yoke ring, and noise generated by the coil support due to transmission of these vibrations to the support, are substantially prevented, particularly if the adhesive material also has a damping effect, or if a thin layer of visco-elastic material preferably realizing a detachable connection between the adhesive material and the yoke ring is provided between this adhesive material and the yoke ring.

Abstract: The present invention relates to a cathode ray tube having an inner magnetic shield and to a method for fixing the inner magnetic shield. The inner magnetic shield is fixed to a frame supporting a shadow mask simply with fixing members. First engagement holes are provided on each side of a first flange portion of the frame, and second engagement holes are provided on each side of a second flange portion of the inner magnetic shield. Each side of the second engagement hole is provided with a folding portion. The fixing member is inserted so as to put into the first engagement hole and the second engagement hole facing the first engagement hole from the side of the inner magnetic shield.

Abstract: A shadow mask for a color CRT, by which the electron beams can be focussed to the corresponding fluorescent body coated on the inner surface of a panel, includes: a first layer positioned toward a fluorescent body, and having thermal expansion coefficient between 5.0.times.10.sup.-6 /.degree. C. and 13.times.10.sup.-6 /.degree. C., and a second layer oriented toward electron guns, and having thermal expansion coefficient of below 5.0.times.10.sup.-6 /.degree. C. The second layer is 0.001 to 0.5 times as thick as the first layer.

Abstract: An apertured shadow mask directs electron beams toward phosphor elements on the inside surface of the face plate of a CRT. The mask is fixed to a rectangular frame having corner brackets connected by light-weight diaphragm strips and resilient plates molded to the brackets. The resilient plates have holes toward the distal ends thereof which engage pins embedded in a skirt surrounding the face plate. The plates are precipitation hardened stainless steel having a thickness of 0.20 mm to 0.30 mm and provide sufficient spring force to retain the mask and frame as well as the internal magnetic shield which is fixed to the corner brackets by clips.

Abstract: The present invention provides an improvement in a CRT (10) having a tension mask (24) and support frame assembly (35). The support frame assembly (35) is rectangular and has two long sides that parallel a central major axis thereof and two short sides that parallel a central minor axis thereof The mask (24) has a substantially cylindrical contour, being curved along the major axis and straight along the minor axis. The frame assembly (35) includes two first members (36, 38; 136, 138) that parallel the major axis and two second members (40, 42), attached to the ends of the first members, that parallel the minor axis. Each of the first members (36, 38; 136, 138) includes a rigid section (50; 150) and a compliant section (52; 152) cantilevered from the rigid section (50; 150). The compliant sections (52; 152) have a distal end (54; 154) and a proximal end (56; 156). The mask (24) is attached to the distal ends (54; 154) of the compliant sections (52; 152).

Abstract: An object of the present invention is to enable production of a flat color selecting mechanism in which no floating of a damper wire is produced, accompanied by flattening of a cathode-ray tube screen. A color selecting mechanism frame over which a color selecting electrode thin plate is stretched is formed so as to have at least one point of inflection between a center portion and end portions of the frame.

Abstract: A positional relation between a fluorescent film 11 and a shadow mask 2 is maintained in the optimal state with respect to the thermal expansion of a face panel 10 by providing hook springs 5 of stainless steel on minor side wall portions 3a of a rectangular frame 3 for fixedly supporting the shadow mask and a hook spring 6 of bimetal on a major side lower wall portion 3b of the frame 3.

Abstract: A cathode-ray tube includes a tension mask attached to a rectangular support frame assembly that has two long sides paralleling a central major axis thereof and two short sides paralleling a central minor axis thereof. The frame assembly includes two first members, having oppositely disposed ends, paralleling the major axis, and two resilient U-shaped second members, having a first leg and a second leg attached to the oppositely disposed ends of the first members, paralleling the minor axis. Each of the first members has a compliant portion and a base portion. The mask is attached to the distal ends of the compliant portion. A detensioning rod assembly is disposed between the first and second legs of each of the second members to facilitate varying the tension of the mask.

Abstract: There is provided a shadow mask assembly for a color cathode ray tube (CRT), including a mask plate through which a multitude of electron beam passing holes are formed, a rim portion which extends from the edges of the mask plate and has a smaller radius of curvature than the radius of curvature of the mask plate, a skirt portion which extends perpendicularly from at least one of the longer and shorter edges of the rim portion, and a frame which is combined with the skirt portion and supports the skirt portion.

Abstract: In a color cathode-ray tube having a glass envelope including a panel portion, neck portion and a funnel portion coupling the panel and neck portions to each other, an electron gun mounted within the neck portion for producing electron beams, a phosphor screen formed on an inner surface of a face plate of the panel portion and a shadow mask having a plurality of holes therein and disposed opposing the phosphor screen so that the electron beams pass through holes in the shadow mask to impinge on the phosphor screen, the holes in the shadow mask are arranged with a varying arrangement pitch which is monotonically non-decreasing from a central portion to two opposite peripheral portions of the shadow mask as viewed, in a horizontal direction in the color cathode-ray tube, at an arbitrary position on the shadow mask in a vertical direction in the color cathode-ray tube.

Abstract: In color cathode ray tubes, a magnetic field of mask frame corner parts is sensitive to changes in the earth's magnetic field, so resistance holes are drilled in corner parts of a mask frame to increase resistance and to decrease the strength of magnetism for preventing decline of calorimetric purity of screen corner parts. These resistance holes are able to advance degaussing efficiency, to disperse the earth's magnetic field to insert resistance parts on the corner parts, and a magnetic field of the inner corner parts of a mask frame is not affected by resistance holes.

Abstract: A display device comprising a display tube having a display screen with a pattern of phosphor elements. To reduce mislandings of electron beams, the display tube is accommodated within an external magnetic shield which is formed by one or more individual frames composed of bars of a magnetizable material and one or more excitable coils. The coils may be arranged, for example, alongside the frames.

Abstract: A shadow mask type color cathode ray tube includes a generally rectangular shadow mask having a curved apertured portion having a multiplicity of electron-transmissive apertures, a curved imperforate portion surrounding and integral with the apertured portion and a skirt portion bent back from a periphery of the curved imperforate portion to form a rearwardly extending wall, and a generally rectangular support frame for suspending the shadow mask by spot welding the skirt portion thereto, within a panel portion of the color cathode ray tube, and at least one of short and long sides of the skirt portion contains only a pair of embossments extending in a direction parallel to a longitudinal axis of the color cathode ray tube on opposite sides of the spot welding point of the support frame and the skirt portion at a center of the at least one of short and long sides of the skirt portion within a distance of one fourth or less of a length of the at least one of short and long sides of the generally rectangular sh

Abstract: The frame (30) comprises flat sides (30a, 30b, 30c, 30d) disposed along the lateral faces of a right prismatic surface. The sides (30a, 30b, 30c, 30d) of the frame (30) comprise an outer panel (31) and an inner panel (32) which are assembled and fixed to each other and are each constituted by a portion of a thin metal strip preferably reinforced by ribs. Devices (34) for suspending the frame (30) in the glass case of the cathode ray tube may be fixed by clipping or by welding on corner portions (33) of the frame (30).

Abstract: A color cathode ray tube for permitting electron beams emitted from an electron gun to pass through apertures of a shadow mask and collide onto phosphors coated on the inner surface of a panel to thereby reproduce image information includes a magnetic shielding body which, for decreasing an influence of a terrestrial magnetic field, is formed of a rectangularly-shaped magnetic material and has one ends supported by the shadow mask to be symmetrical along the horizontal and vertical axes of the tube, and a plurality of notches formed into the magnetic shielding body are classified by the horizontal and vertical axes to be distributed asymmetrical with respect to the horizontal or vertical axes within four quadrants partitioned by the horizontal and vertical axes. Thus, the quantity of the landing variation in a specific portion having the greater quantity of the landing variation is reduced during the change of an outer magnetic field or the direction shift of the cathode ray tube.

Abstract: A slot-type shadow mask is provided, which enables one to avoid the problem termed the "phosphor-stripe loss" to thereby improve the quality. This shadow mask includes a plate-like body having slots for selectively allowing electron beams to pass through the mask. The slots are located in a rectangular slot area of the body. Each of the slots has a vertically elongated shape. The slots are arranged horizontally at a specific horizontal pitch and vertically at a specific vertical pitch. The slots form first to m-th slot columns, where m is a natural number. A part of the slots included in the first slot column and a part of the slots included in the m-th slot column have a first width. A part of the slots included in the second slot column and a part of the slots included in the (m-1)-th slot column have a second width. The remaining slots have a third width. The first width is smaller than the third width and the second width is larger than the third width.

Abstract: In a shadow mask of the present invention applicable to a color CRT (Cathode Ray Tube), a part of slots located at the opposite edges of the mask each has a horizontal section so configured as to intercept or reduce the quantity of direct light contained in exposing light, while allowing reflections from, e.g., the casing of an exposing device to pass therethrough.

Abstract: A shadow mask assembly 1 includes a shadow mask 2 of invariable curvature and rotatable by a minimum required amount when the ambient temperature changes. The shadow mask assembly includes a shadow mask 2 having a number of electron beam apertures, a support frame 3 for holding the shadow mask 2, and mask springs 4 for holding the support frame 3 inside a panel of a color picture tube, wherein the shadow mask 2 is made of a metal material composed chiefly of invar, and the support frame 3 and the mask springs 4 are made of low-expansion stainless steel or metal material having a coefficient of thermal expansion of not larger than 1.19.times.10.sup.-5 such as stainless steel whose chromium content is 11% to 16% by weight. In the shadow mask assembly 1 using such metal materials, the curvature at the peripheral edges of the shadow mask 2 does not locally change during the fabrication.

Abstract: A device for shielding an electrical field emitted backward from a video display appliance. The device includes a device for shielding an electrical field emitted backward from a video display appliance including a CRT having an anode to which a high voltage is supplied, a deflection yoke for deflecting electron beams produced from electron guns, and a video board for processing and outputting video signals to the CRT, the device comprising, a first patterned section printed on a periphery of a back of the video board and connected to ground, and a second patterned section printed inside the first patterned section, the scond patterned section having a pulse applying portion to which a pulse voltage having a polarity opposite to the electric field waveform is applied and a termination portion.

Abstract: A combination structure of the shadow mask and the mask frame is a combination structure including a shadow mask, being disposed inside a panel of a color cathode-ray tube and a mask frame, supporting the shadow mask. The combination structure is that the shadow mask is inserted in the mask frame so as to touch internally the skirt portion of the shadow mask on the flange portion, and then their contact portions are adhered to each other by welding process so as to serve to decrease the amount of doming together with miss-landing of electron beams, and to improve color purity of the screen when it is applied to a color cathode-ray tube. And the flange portion is curved from the welding point where the flange portion and the skirt portion are welded, toward the outer direction of the mask frame.

Abstract: A vacuum envelope includes a flat faceplate and a flat rear plate opposed to the faceplate. A phosphor screen is formed on an inner surface of the faceplate. A plurality of support members are located between the faceplate and the rear plate and bear atmospheric pressure acting on the faceplate and the rear plate. Each support member has first and second support portions. The first support portion is set up on the rear plate and has a proximal end face intimately in contact with the inner surface of the rear plate and a bearing surface substantially parallel to the rear plate. The second support portion is provided between the bearing surface of the first support portion and the faceplate, and has a distal end abutting against a predetermined position on the inner surface of the faceplate and a proximal end portion intimately in contact with the bearing surface of the first support portion.

Abstract: By selecting the number of apertures per vertical row in the shadow mask of a color cathode ray tube to be in the range between 615 and 650, such a cathode ray tube can be used both in a PAL, an NTSC system and a MUSE system without the occurrence of disturbing Moire effects. In a second embodiment the number of apertures per row ranges between 425 and 450.

Abstract: A color cathode ray tube has a substantially rectangular shadow mask in which a plurality of slit type aperture arrays are aligned in the direction of the major axis of an effective region defined by a curved surface opposing a phosphor screen formed on the inner surface, defined by a concave curved surface, of the effective region of a panel. Each slit type aperture array is obtained by arranging a plurality of slit type apertures in an array in the direction of the minor axis of the effective region of the shadow mask. In this color cathode ray tube, the difference between the array interval of the slit type aperture arrays at a peripheral portion on the long side of the shadow mask and the array interval of the slit type aperture arrays on the major axis is a maximum value within a distance range of 0.4 h to 0.

Abstract: The present invention provides both inner shield materials and its manufacturing method with superior magnetic characteristics and rust protection, which does not require conventional blackening process. Another object of the present invention is to provide the inner-shield manufacturing method, by which steel sheet or strip passing is smoothed in the plating process and Ni-plated steel sheet or strip is prevented from sticking in the annealing process.

Abstract: A cathode ray tube has a panel portion 1 with a phosphor layer 5 formed on its inner face, a neck portion 2 accommodating an electron gun 9, a funnel portion 2 for coupling the panel portion 1 to the neck portion 2 and a color selective electrode assembly 6 having a number of electron beam passing openings arranged opposite to the phosphor layer 5 with a space therebetween. The color selective electrode assembly is installed within the panel portion 1. An electron beam reflection film of a bismuth oxide thin film 6R having a bulk density of from 4 to 9.3 g/cm.sup.3 is formed on the face of the color selective electrode assembly 6 against which the electron beams 14 emitted from the electron gun 9 collide. The cathode ray tube is capable of displaying high density and high resolution image.

Abstract: A method of manufacturing a shadow mask of the nickel-iron type, in which an aperture-patterned sheet of a nickel-iron alloy comprising 35-37% by weight of Ni and less than 0.1% by weight of each constituent of the group of Mn, Cr and Si and at most 0.9% by weight of Co is given a thermal treatment for obtaining an ASTM grain number of .gtoreq.7, and the sheet thus obtained is given the desired shape of a shadow mask having a thermal expansion coefficient of .ltoreq.0.9.times.10.sup.-6 /.degree.C.

Abstract: A shadow mask support assembly for a color cathode-ray tube prevents partial thermal deformation generated by welding a shadow mask and a mask frame. Also, the shadow mask support assembly for a color cathode-ray tube includes a mask frame suspended and supported in the inner face of the panel, a shadow mask inserted in the inner circumference of the mask frame, and an elastic band for supporting the inner circumference of the mask frame body which presses a skirt portion of the shadow mask from its outer circumference to prevent welding the mask frame and the shadow mask.

Abstract: A magnetic cathode ray tube (CRT) which has an iron or cobalt based amorphous alloy layer on the surface of a glass bulb shows an excellent magnetic shielding effect and has simple structure.

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 cathode ray tube package includes a cathode ray tube assembly and a housing assembly including a deflection coil and/or at least one focus coil. The cathode ray tube assembly includes a collar (31) aligned with the electron beam, being arranged to mate with a mounting collar (41) carried on the housing assembly. The provision of the collar (31) enables the cathode ray tube assembly to be easily replaced at the end of the cathode ray tube's life within the housing assembly without the need for realignment of the coils.

Abstract: A color cathode ray tube in which the structure of a shadowmask frame assembly is improved. The color cathode ray tube includes a panel, a funnel sealingly coupled to the panel, an electron gun installed in a neck portion of the funnel, a deflection yoke installed around a conical portion of the funnel, a shadowmask frame assembly including a shadowmask in which a multiplicity of electron beam passing holes are formed and a frame installed at an inner edge of the panel for supporting the shadowmask, and a heater for thermally expanding the frame in the same direction as the thermal expansion direction of the shadowmask. According to the color cathode ray tube, it is possible to stabilize an initial screen.

Abstract: A color-selecting apparatus of a color display device which can effectively suppress vibration generated in a color-selecting electrode system, wherein one side of a supporting plate spring is fixed to a frame via a holder, and the other side of the supporting plate spring is fixed to the frame. The supporting plate spring is constituted by laminating flat plate springs, and the flat plate springs relatively move by deformation accompanying the vibration from the outside. The vibrational energy is consumed by the frictional energy generated between them.

Abstract: The present invention provides luminescent screens with a mask layer, methods of manufacturing the screens, and display devices incorporating the screens. The mask layer is attached to a matrix defining the pixels in the screen and preferably includes voids formed therethrough corresponding to each pixel. The voids in the mask layer preferably have a size generally corresponding to that of the pixels near the phosphor material and narrow in the direction of the electron source.