Abstract: The present invention relates to a CRT 10 having an evacuated envelope comprising a funnel 11 sealed at one end to a faceplate panel 12 with a luminescent screen 14 on an interior surface thereof. A color selection electrode 16, mounted on a frame 19, is disposed within the envelope in proximity to the screen. An internal magnetic shield 22, is secured to the frame of the color selection electrode, and is spaced from and extends along at least a portion of the funnel. The magnetic shield has a plurality of openings 32 therethrough. An evaporable getter 28 is disposed within the envelope adjacent to the exterior surface 26 of the magnetic shield 22. The magnetic shield is improved by having tabs or louvers 36, 38, 136, 138, associated with the openings, for restricting the deposition of a film of getter material 30 to the exterior surface 26 of the shield 22.

Abstract: A cathode-ray tube (CRT) of anti-static-processed type and further a cathode-ray tube which screens a leakage electric field (VLF band width) has a triple coat layer formed on a face plate thereof. The triple coat layer includes a high-refractive transparent conductive layer, a low-refractive smooth transparent layer, and a low-refractive rough transparent layer; and is formed on the face plate to reduce the weight of the CRT, minimize the deterioration of the resolution and contrast of images displayed, diminish the reflection of external light, and provide sufficient film strength for practical use.

Abstract: A focussing lens for an electron beam device is formed by a helically coiled resistance layer of a fired suspension of a conductive material of a mixture of a lead rathenate, a lead titanate and a ruthenium oxide in a glass formed of silicon dioxide, aluminum oxide and lead oxide.

Abstract: An electric field shield for non-grounded AC powered appliances is connected to a neutral return terminal of the AC power distribution system. A polarized two prong connector assures connection of the shield to neutral. By eliminating a requirement for connection of the shield to ground, shields are made available for appliances precluded from ground connection such as bedding heaters. A double pole control switch is included to eliminate E-field generation in an OFF state caused by improper wiring or the use of unpolarized intermediate connectors. The shield is insulated and a current limiting device is series connected between the shield and neutral to reduce electrical hazards.

Abstract: A filter screen including a mounting frame mounted on a monitor, a screen glass holder frame pivotally connected to the mounting frame, a conductive screen glass mounted between the front and back shells of the screen glass holder frame and covered over the screen of the monitor, and a radiation alarm and eliminator circuit mounted on the screen glass holder frame and connected to the hot and neutral slots of a power outlet socket by a two-blade plug permitting the radiation of the monitor to be guided by the conductive screen glass to grounding, and wherein the radiation alarm and eliminator circuit has an indicator lamp and a buzzer controlled by an option switch to flash or buzz when the two blades of the plug are not inserted into the hot and neutral slots of the power outlet socket correctly.

Abstract: An electron beam display device which has high contrast and excellent image quality, by eliminating halation due to re-collision of the electrons in the fluorescent element area. The electron beam display device includes a face glass on which an image is formed, a cathode for emitting electron beams, a fluorescent element layer on the face glass and facing the cathode, with which layer electron beams collide to emit light for forming an image on the face glass, an aluminum layer as anode on the fluorescent element layer, and a carbon layer on the aluminum layer, having a thickness sufficient to prevent electrons, reflected in the aluminum anode layer by collision of electron beams with the aluminum anode layer, from coming back into the face glass.

Abstract: Human bodies are shielded from an alternating electric field radiated from a deflection yoke of a cathode-ray tube device to prevent the alternating electric field from adversely affecting the human bodies. For an alternating electric field traveling forward in the direction of a tube axis 28 of a cathode-ray tube, a cone section 1b is formed with a conductive film 17 for shielding an electric field and/or a face panel 2 is formed with a transparent conductive film 21 for shielding an electric field and the transparent conductive film 21 is grounded or an optimum potential is given only to the transparent conductive film 21 for shielding an electric field.

Abstract: In order to provide a coating material for formation of an antistatic/high refractive index film possessing superior antistatic effects, as well as an antistatic/anti-reflection film covered transparent material laminated body provided with superior antistatic effects and anti-reflection effects obtained by this coating material, and a cathode ray tube possessing this laminated body which is provided with antistatic effects, electromagnetic wave shielding effects, anti-reflection effects, and the effect of increase in contrast, the following are provided: a coating material comprising a dispersion fluid containing a mixture of an antimony doped tin oxide fine powder and a black colored electrically conductive fine powder; an antistatic/anti-reflection film covered transparent material laminated body containing a film layer of the coating material on the surface of a transparent substrate, and a specific low refractive index film layer; and a cathode ray tube possessing on its surface a first layer film contai

Abstract: The present invention is directed to an antireflection film having a multilayer structure in which an antireflection multilayer film including at least two thin films is formed on a substrate, wherein at least one of the thin films contains a coloring agent. The antireflection multi-layer film absorbs light of an entire range of wavelength of 400-700 nm, and the reflectance of the antireflection multi-layer film with regard to the wavelength, light of which this antireflection multi-layer film can absorb, is smaller than the reflectance of the substrate. The antireflection film can be applied to a cathode ray tube or a light-transmitting display substrate of a display apparatus such as a liquid crystal display apparatus for the purpose of effectively avoiding reflection of external light.

Abstract: A color display tube is presented having an elongated display screen with a pattern of phosphor dots. In order to render mislanding errors of the electron beams as small as possible, particularly in the y direction, the color display tube has an internal shield which is provided proximate to its gun-sided open end with a structure for deflecting the field lines of the axial component of the earth's magnetic field more to the short sides than to the long sides of the shield. This structure is particularly constituted in that the short sides are provided with edges extending toward the gun, or in that a border strip has been removed from the long sides.

Abstract: In a cathode ray tube (CRT) having a glass envelope with a neck portion, a funnel portion and a display screen, or front panel, an electron gun disposed in the CRT's neck portion has a plurality of aligned electrodes, including a charged shield cup. The shield cup includes a plurality of contact springs disposed about the outer periphery thereof and engaging a conductive layer on the inner surface of the CRT's neck portion for supporting the electron gun and charging the shield cup to an electron accelerating, or anode, voltage. Also disposed on the outer periphery of the shield cup and engaging the inner conductive layer is a getter support member.

Abstract: A cathode ray tube device capable of providing sufficient shielding effect against leaking alternating electric field while exhibiting high reliability during long use. Alternating electric field generated by a deflection yoke is sufficiently reduced by the shielding effect produced by a conductive film formed on a funnel portion. A gap formed between the conductive film and an insulating sheet provided between the conductive film and the deflection yoke, due to dimensional error, is filled with insulating silicone grease, so as to avoid secular degradation of insulation which otherwise may occur due to accumulation of dust and other matters.

Abstract: There is disclosed a film composition useful for reducing light glare especially adapted for use in connection with cathode-ray tube or other monitor screens which is formed from a colloidal suspension from between ten percent to thirty percent by weight of an aliphatic thermoplastic urethane resin dissolved in a blend of water, N-methylpyrrolidone and amines, mixed with between seventy percent and ninety percent by weight of Denatured Ethyl Alcohol (190 proof). The colloidal suspension is admixed with an aerosol propellant under pressure, and is deposited on a monitor screen by aerosol deposition to create a film having a thickness of between 0.5 mil and 2 mil. The deposited film dries immediately, and functions to dramatically reduce the glare of light reflecting from the screen monitor.

Abstract: An antistatic coating was provided on a substrate 10 by dispersing latex particles 12 from a polypyrrole compound in an aqueous solution of a hydrolyzed alkoxysilane compound, after which the dispersion was applied to the substrate. The hydrolyzed alkoxysilane compound was converted to silicon dioxide by means of a treatment at an increased temperature, thereby forming a matrix 14 in which the latex particles 12 are dispersed and by means of which the latex particles are adhesively secured to the substrate 10. The antistatic coating can particularly suitably be used on the display screen of a cathode ray tube, and, if desired, said coating can simultaneously be used to reduce the light transmission of the display screen.

Abstract: A cathode-ray tube has a faceplate on which is formed an anti-reflective coating with at least two layers. The first layer is formed on the outer surface of the faceplate by spin-coating an alcohol solution of an organometallic compound, leaving a porous metal oxide layer. The second layer is formed on the first layer by spin-coating an alcohol solution of silicon alkoxide, leaving a porous silica layer. Both layers are baked, and the first layer is baked or cured before the second layer is applied. The first layer has a higher index of refraction than the second layer.

Abstract: Color display tube of the 3-in-line type having a display screen with a pattern of phosphor lines. The display tube has an internal shield with two long walls and two short walls. Each long wall is provided with at least one slit extending in the longitudinal direction of the tube and being remote from the edges of the walls, while for locally increasing the magnetic resistance the shield is particularly provided with a short transverse slit between at least one slit end and an edge of the shield.

Abstract: An advanced video display terminal (VDT) screen shielding method and apparatus includes an electric resistance lower than or equal to 10.sup.5 .OMEGA.(R.ltoreq.10.sup.5 .OMEGA.), a transmittance between 1/3 to 2/3, a fiber diameter D.ltoreq.MIN(D.sub.1,D.sub.2). Wherein D.sub.1 =VD.times.25.4.times.0.8/RV.times.0.16 or D.sub.1 =VD.times.25.4.times.0.6/RH.times.0.16, D.sub.2 =VD.times.PA.sup.3 -QA.sup.2 +RA-S, P=1.342.+-.0.002, Q=2.032.+-.0.002, R=1.011.+-.0.002, S=0.116.+-.0.002 and the aperture is a circle, ellipse, polygon, square or other transfigure. A formed angle .ltoreq.45.degree. of the fabric is horizontally against cathode ray tube. This screen-shielding method could suitably reduce glare and reflected lights, eliminate electrostatic charges and low frequency radiation, and prevent Moires and/or Newton Rings. This screen-shielding apparatus includes a frame, the high conductive fabric and a suitable ground wire, and is installed in front of the surface of the CRT.

Abstract: An antiglare/antistatic coating for a cathode ray tube (CRT) is applied to the outer surface of the CRT's faceplate and includes a first inner hygroscopic layer of silane, water, sulfuric acid and an alcohol mixture which may be applied by dipping, spinning or spraying. The coating further includes a second outer layer of silanes, water, acid, epoxy, and a coupling agent balanced with an alcohol mixture which is sprayed onto the first inner layer. The grounded first inner layer possesses high conductivity for antistatic protection, while the second outer layer, which possesses glass-like characteristics, provides antiglare protection by reducing the faceplate's reflectivity. The second outer layer dries as a hard porous coating which resists scratching and allows water vapor to penetrate into the first inner hygroscopic layer to maintain its high conductivity.

Abstract: A shield for a computer monitor comprises a hollow cylindrical magnetic sleeve disposed around at least a portion of the yoke windings of the monitor. The sleeve has a diameter greater than the diameter of the yoke windings. A cathode ray tube (CRT) standoff for the shield provides for ease of shield installation and continued operation of the monitor within specification without impairing image integrity (i.e. distortion, color impurity or brightness). The standoff creates a specific distance (critical threshold) between the glass bell of the CRT and the shield that prevents image distortion that cannot be overcome through adjusments of the monitor controls (critical interference).

Abstract: Provided is an inner shield for a color braun tube, which enables to improve an inside vacuum state of the color braun tube by readily scattering barium (Ba) into the inner shield disposed in the color braun tube through an opening portion of the inner shield without being attached around an outside of the opening portion when barium is scattered. The inner shield for a color braun tube, has an opening portion through which barium is scattered into an inside of the inner shield disposed in the braun tube when a getter is heated by a high frquency, the opening portion being formed substantially in a shape of a bugle and projected in the getter-positioned direction, whereby barium is easily scattered into the inner shield through the opening portion without being attached around an outside of the opening portion when barium is scattered into the inner shield.

Abstract: Ultrafine particles of a composite particulate substance composed of two or more types of inorganic oxides, forming a particle structure in which two or more types of inorganic oxides are mutually mixed or an inorganic oxide of one type is contained in an inorganic oxide of another type, and having an average particle diameter of not more than 0.1 .mu.m, a process for the production of the ultrafine particles, use of the ultrafine particles as a thin film, particularly in an image display face plate and a cathode ray tube, and a process for using the ultrafine particles therefor.

Abstract: A pigment-attached blue-emitting phosphor comprising a blue-emitting phosphor and a blue pigment attached to the surface of the blue-emitting phosphor, said blue pigment being a CoO.ZnO.SiO.sub.2 type pigment containing Mo.

Abstract: A color display tube is described of the 3-in-line type having a display screen with a stripe-shaped phosphor pattern. The display tube has an internal magnetic shield with a scanning aperture at its gun-sided end for electron beams produced by the electron gun and scanning the display screen. This scanning aperture extends into the short side walls of the shield in a pair of diametrically extreme points at each side to form an oversized scanning aperture with two, and the aperture has a ratio from 1.5 to 1.75 standardized in accordance with the aspect ratio between the long central axis and the short central axis.

Abstract: In a cathode-ray tube, in order to readily and inexpensively reduce an alternating electric field irradiated by a deflection yoke to a front of the cathode-ray tube through a funnel part and a face panel, a conductive film for forming an electric field shield is formed from a neck part to a cone part of a glass bulb and is electrically connected to another conductive film formed on a funnel body part. The deflection yoke is mounted on the conductive film via an insulation sheet interposed therebetween. The conductive film is grounded to form an equipotential surface of 0 V in front of the deflection yoke. A transparent conductive film can be also formed on the external surface of the face panel to raise the reduction of the alternating electric field.

Abstract: In a glass front-panel for a cathode ray tube, whose surface layer contains more potassium ions than those in the interior thereof, and whose flange is stuck to a rear panel to form a vacuum vessel, only the surface layer of the flange portion is substantially removed, or in a glass front-panel for a cathode ray tube, comprising an image displaying portion, a side wall portion and a flange portion, a belt-like electrode for making a gradient of electric potential easier is disposed on a surface of the side wall portion, so that the cathode ray tube is prevented from being damaged due to dielectric breakdown.

Abstract: A color cathode-ray tube (CRT) has a rectangular faceplate panel with a major axis and a minor axis. A viewing screen is disposed on an internal surface of the panel. The panel is sealed to a funnel along an edge of a sidewall of the panel. A color selection electrode assembly is spaced from the screen and attached to the sidewall of the panel. An internal magnetic shield has a substantially rectangular base with four corners which is secured to the color selection electrode assembly, and a flange circumscribing an aperture. A substantially continuous shield sidewall extends between the base and the flange. The shield sidewall extends backward along an inner surface of the funnel. The internal magnetic shield is improved by at least two pairs of strengthening ribs which are formed in opposite sides of the shield. The ribs are substantially parallel to the minor axis of the panel and in proximity to the flange of the shield.

Abstract: A color cathode ray tube includes a face plate, and a selective light absorption film formed on the external surface of the face plate to improve the emission tint, the film having a predetermined characteristic of spectral transmittance. The selective light absorption film is formed of a coating material which consists of a base coating including an alcoholic solution of silicon alkoxide having --OH group or --OR group, and an organic or inorganic dye or pigment mixed into the base coating. Such a coating material is applied onto the external surface of the face plate to form the selective light absorption film. The selective light absorption film has main and auxiliary absorbing bands. If the fluorescent face of the face plate includes a blue fluorescent element of ZnS:Ag, a green fluorescent element of ZnS:Au, Cu and Al and a red fluorescent element of Y.sub.2 O.sub.

Abstract: A cathode-ray tube display device wherein a resistance material, e.g. graphite, is provided on each of a funnel portion, a cone portion and a neck portion of a cathode-ray tube, and a deflecting coil unit is mounted to the neck portion through an insulator, to shield an alternating electric field generated from the deflecting coil unit.

Abstract: A display apparatus comprises a CRT having an evacuated envelope including a faceplate with a luminescent screen on the interior surface thereof. An electron gun is disposed within a neck of the envelope for generating and directing at least one electron beam toward the screen. A funnel connects the neck of the envelope with the faceplate. A deflection yoke is disposed around the envelope at the junction of the neck and the funnel. The yoke is attached to the envelope with an adhesive. The envelope further includes a first conductive coating on the interior surface of the funnel, a second conductive coating on at least a portion of the exterior surface of the envelope, and a third coating on the exterior surface of the envelope underlying the yoke and connected to the second conductive coating.

Abstract: A cathode-ray tube having a layer provided on a face plate outer surface, with the layer comprising at least one colored transparent electroconductive domain consisting of at least one organic dye, at least one electroconductive metal oxide and silica mainly composed of silica gel and at least one non-glare and protective domain consisting of silica mainly composed of silica gel, thereby resulting an a cathode-ray tube having wide and stable optical properties, high contrast, and antistatic property to remove the panel electricity generated by static induction, and an antireflection property.

Abstract: An attachment for a video screen of a cathode ray tube of a monitor or TV receiver is constituted by a glass pane having on a front side, facing away from the video screen, a multilayer anti-reflective coating. If necessary, the glass pane on a rear side, facing towards the video screen, may incorporate an absorptive coating. The anti-reflective coating is limited to two active dereflective layers. One of said two layers is a metal layer of gold or a metal alloy with a gold content of more than 50% and with a thickness of 4 to 10 nm. The second active dereflective layer is of dielectric material with a refractive power of n<1.8 and constituting an interference layer which faces away from the glass pane and which is essentially absorption-free and forms an anti-reflective layer for the visible region of the spectrum.

Abstract: A display device including a display screen having an optical film provided thereon. The optical film is a porous thin film made of fine magnesium fluoride particles and a binder containing a condensate of a silane compound having a fluoroalkyl group, a co-condensate of the silane compound and silicon, or a co-condensate of the silane compound and a metal oxide compound. The combination of the specific binder and fine magnesium fluoride particles permits forming a porous optical film having a surprisingly high mechanical strength, excellent resistance to humidity and reduced external light reflection from the display plane.

Abstract: An antireflective coating layer 22 is applied to a substrate 20, the coating layer having a refractive index gradient such that the refractive index decreases in the direction from the substrate surface 24 to the outside surface 26 of the coating layer. An organic solution of an alkoxide starting material is provided on the substrate and is converted into a gel in situ by means of a reaction with water, which gel is subsequently dried. During the formation of the gel the reaction conditions are varied in such a manner that a non-porous gel is formed in which the degree of crosslinking of the gel material increases in the direction from the substrate surface to the outside surface of the coating layer.

Abstract: A cathode-luminescent panel lamp (20) includes an evacuated tube (21) having a phosphor coating (25) on the inside surface of a face plate (24). An electron gun (28) is arranged to discharge at least one conical beam of electrons toward the coating to form an electron cloud within the tube. Shaping electrodes (29,30) positioned within the tube distribute and normalize the electron density of the cloud as a function of the angle (.theta.). The electrons pass through a field-separating mesh (39) to impinge upon a secondary emission mesh (40), which amplifies the electron density. The amplified electrons excite the phosphor coating to produce light of substantially-constant intensities across the face plate. The improved lamp may be used to back-light an LCD or in a stadium display.

Abstract: The present invention is directed to a cathode ray tube (CRT) having a surface with improved antistatic and antiglare properties and to a method for providing such improved properties. In the method of the invention, a solution of a silane selected from a chlorinated silane and an alkoxysilane in a solvent system of on alcohol and chloride ion is provided. The solution is applied to the surface of a cathode ray tube to impart antiglare and antistatic properties to the surface. Thereafter, the CRT with the silane applied is cured at an elevated temperature for a period of time sufficient to cause the silane to react and be converted to a siloxane.

Abstract: The present invention is directed to a cathode ray tube (CRT) having a surface with improved antistatic and antiglare properties and to a method for providing such improved properties. In the method of the invention, a solution of an alkoxyilane in a solvent system of an alcohol, chloride ion and water is provided. The solution is applied to the surface of a cathode ray tube to impart antiglare and antistatic properties to the surface. Thereafter, the CRT with the saline applied is cured at an elevated temperature for a period of time sufficient to cause the saline to react and be converted to a siloxane.

Abstract: A cathode-ray tube includes a face plate having a light transmittance of at most 50% and a reflectivity reduction film formed on the external surface of the face plate to reduce reflectivity of an external light. The reflectivity reduction film is a low refraction index layer formed by using a coating liquid obtained by dispersing and mixing magnesium fluoride superfine particles to a base coating of an alcohol solution containing a silicon alkoxide. The low refraction index layer can be laminated by a high refraction index layer formed by using a coating liquid obtained by dispersing and mixing tantalum oxide fine particles to the same base coating as that of the low refraction index layer.

Abstract: A cathode ray tube has an external magnetic shield adapted for tight fitting positioning upon and about the funnel portion of the CRT. The external magnetic shield includes a shell preferably of conventional plastic and a soft magnetic material having high permeability and low coercivity. The soft magnetic material may be either disposed as a layer on the surface of the shell or distributed throughout the shell in the form of small particles. The external magnetic shield is installed over the CRT funnel following CRT evacuation and frit-sealing for improved magnetic shielding in a low cost, easily assembled magnetic shielding arrangement.

Abstract: A device for the display or projection of images, which has an external output face covered with an abrasion-resistant and transparent coating, said coating constituted in part of an abrasion-resistant layer formed from at least one material selected from the group consisting of adamantane carbon, Y.sub.2 O.sub.3, and indium-tin oxide implanted with oxygen. A display or projection device can be a television tube designed for the display of high-definition transmissions.

Abstract: A high resistance body for supplying the high voltage of an anode terminal to the electrodes of an electron gun is coil-shaped. The anode terminal is mounted on the funnel portion of a glass bulb, and overlapped by a first conducting layer. The anode terminal is electrically connected to the electrodes of the electron gun comprising the coil-shaped high resistance body, second conducting layer and metal strip. The equivalent circuit comprises a resistance and condenser connected in parallel, at least an inductance generated by the coil-shaped high resistance body connected in series to the resistance, and the electrodes of the electron gun.

Abstract: A cathode ray tube has a vacuum envelope which includes a faceplate, an optical filter formed on the faceplate, the optical filter including mainly of SiO.sub.2 and containing a coloring material, and a phosphor layer formed on the inner surface of the faceplate. The optical filter includes silicon having a fluorine-containing group and a siloxane bond at least on the surface thereof, and a maximum light absorption wavelength in a range of 400 to 650 nm is in a region of 575.+-.20 nm, and where the transmissivity for the wavelength of 450 nm is T.sub.450, that for 530 nm is T.sub.530, that for 550 nm is T.sub.550, that for 630 nm is T.sub.630, and that for the maximum absorption wavelength is Tmin, the following relationship is established:Tmin.ltoreq.T.sub.550 .ltoreq.T.sub.530,1.ltoreq.T.sub.450 /T.sub.539 .ltoreq.2,1.ltoreq.T.sub.630 /T.sub.530 .ltoreq.2,0.7.ltoreq.T.sub.450 /T.sub.630 .ltoreq.1.43.

Abstract: Disclosed is a shadow-mask type color cathode-ray tube comprising a faceplate having a curved inner surface which prevents degrouping and a substantially flat outer surface. In this color cathode-ray tube, the resolution is not deteriorated in the peripheral portion and an inespensive flat material is usable as a glass plate provided with a reflection reducing coating or a touch panel attached to the outer surface of the faceplate. Since a shadow mask supported with a tension applied thereto is usable, the positional deviation of the apertures due to the expansion of the shadow mask during operation is prevented.

Abstract: A frame for assembling shielding units for the radiation emitted by apparatus incorporating variously sized video terminals comprises two flat annular structures, namely a front and a rear, which are able to be connected together to simultaneously clamp the perimetral edge of a shielding plate (2), the annular structures each consisting of four identically configured consecutive elements (1), each comprising one corner (11) and one side (10) of the peripheral form of the corresponding flat annular structure, the elements (1) of the front or near flat annular structure overlying the abutting end regions of the pairs of elements pertaining to the rear or front flat annular structure.

Abstract: A color cathode ray tube has a coating film formed over an outer surface of a face plate. The coating film prevents a charge-up phenomenon of the face plate and also has a function for improving a contrast performance of the color cathode ray tube. The coating film is composed of a polymer of silicon alkoxide, translucent conductive particles and plural types of dyes or pigments. The absorption peak of the main absorption band of the coating film is set in the range between the main spectrum wavelength of 570 nm of the green luminescence and the main spectrum wavelength of 610 nm of the red luminescence of the color cathode ray tube. The absorption peak of the sub absorption band of the coating film is in at least one of a first range between a wavelength of 380 nm and a wavelength of 420 nm and a second range between a wavelength of 470 nm and a wavelength of 510 nm.

Abstract: Unwanted electric fields in the area in front of a CRT can be produced by flyback voltage pulses which occur across the horizontal deflection coils and are coupled to the inner DAG coating of the CRT. The unwanted fields can be eliminated by providing voltage pulses equal and opposite to the causative voltage pulses and applying the provided voltage pulses to the inner coating and the anode button, leaving no fields to be cancelled in the relevant area.

Abstract: A CRT wherein a pair of anode buttons are fixed in a symmetrical position on the outer surface of a funnel of the CRT and led through the funnel, to contact an inner conductive coating, thereby forming relatively symmetrical anode potential.

Abstract: Ultrafine particles of a composite particulate substance composed of two or more types of inorganic oxides, forming a particle structure in which two or more types of inorganic oxides are mutually mixed or an inorganic oxide of one type is contained in an organic oxide of another type, and having an average particle diameter of not more than 0.1 .mu.m, a process for the production of the ultrafine particles, use of the ultrafine particles as a thin film, particularly in an image display face plate and a cathode ray tube, and a process for using the ultrafine particles therefor.

Abstract: A shielded CRT (18) display includes a secondary shielding enclosure (14) for enclosing the CRT (18) and for inhibiting electromagnetic emissions therefrom. A primary shielded enclosure (12) internal to the secondary shielding enclosure (14) has a portion coaxial (16) with the neck portion (22) of the CRT (18) for also inhibiting electromagnetic emissions from the CRT (18). The CRT (18) includes an internal conductive layer comprised of an internal aquadag, wire mask, and phosphor coating. This internal conductive layer is grounded via a reactive path to ground to suppress electromagnetic emissions. This double shielding suppression technique eliminates the need for external shielding of the face portion of the CRT (18).

Abstract: A cathode-ray tube having a face plate which includes a phosphor layer provided at the inner surface side of a glass plate and an optical interference filter provided between the phosphor layer and the inner surface of the plate. The optical interference filter is constituted by high- and low-refractive index layers. The outermost layer of the optical interference filter in contact with the phosphor layer is an Al.sub.2 O.sub.3 layer or a ZrO.sub.2 layer having a physical thickness of 10 nm or more. The high-refractive index layer of the optical interference filter preferably consists of TiO.sub.2, and its low-refractive index layer preferably consists of Al.sub.2 O.sub.3.

Abstract: A panel of a metal backed color cathode ray tube and a manufacturing method thereof are disclosed which are characterized in that the height of the graphite remaining on the skirt is higher than or same as the metal deposition height of the deposited metal layer, and that a shielding plate having a height higher than or same as the cutting height of the graphite is used on a deposition dolly for forming the deposited metal layer. According to the present invention, the deposited metal layer is neither floated nor detached due to the combustion of the organic materials used in forming the luminescent layer or the intermediate layers such as the filming layer, and therefore, the defect rate due to the blocking of the holes of the shadow mask is markedly reduced, thereby making it possible to save labor and materials in producing the product, and concomitantly upgrading the quality of the metal backed color cathode ray tube.