Abstract: An electromagnetic-wave shielding and light transmitting plate or a display panel is provided which comprises a transparent base plate or a PDP body, a transparent base plate, a conductive composite mesh member which is interposed therebetween and bonded together by adhesive intermediate films. Alternatively, an electromagnetic-wave shielding and light transmitting plate or a display panel is provided which comprises a transparent base plate or a PDP body having a transparent conductive film, a transparent base plate, and a conductive composite mesh member which is interposed therebetween and bonded together, wherein a conductive adhesive tape is bonded to cover a range from the outside edges of the transparent conductive film to the outside edges of the transparent base plate through the end faces of the latter, and margins of the conductive composite mesh member are folded and fixed to the transparent base plate or the PDP body by conductive adhesive tapes.

Abstract: In a cathode ray tube, a shadow mask has a hole portion where a plurality of electron beam passing holes are formed and a skirt portion extending from the edge of the hole portion. A frame has a support portion to which the skirt portion of the shadow mask is fixed for supporting the shadow mask and a flange portion extending from the support portion. The support portion and the flange portion have a plurality of holes formed therein. An inner shield is supported by the frame.

Abstract: An anti-reflection film has a low refractive index layer and a high refractive index layer. The low refractive index layer is formed by coating a composition comprising (a) a hydrolysis product or a partial condensation product of an organosilane and (c) a vinyl resin. The organosilane is represented by the formula of R.sup.1 Si(OR.sup.2).sub.3 in which R.sup.1 is an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms or an aryl group having 6 to 10 carbon atoms, and R.sup.2 is an alkyl group having 1 to 5 carbon atoms or an acyl group having 1 to 4 carbon atoms. The vinyl resin has at least one silyl group substituted with a hydrolyzable group or hydroxyl.

Abstract: A high-resistance film having a plurality of pores and a resistance of 10.sup.10 to 10.sup.14 .OMEGA. is formed on the inner wall of the neck from a position where the high-resistance film contacts the inner conductive film to at least part of the inner wall surrounding at least the space between the grid farthest from a cathode to the grid second farthest from the cathode.

Abstract: The present invention provides a near infrared absorption filter which contains, in a resin film produced from either or both a polycarbonate and a polyarylate by solution casting, a dithiol-nickel complex represented by the following formula (1): ##STR1## and at least one kind of diimmonium compound represented by the following formula (2): ##STR2## (Wherein R.sub.1 to R.sub.8 may be the same or different and are each a hydrogen atom, an alkyl group or an aryl group; and X.sup.- is an anion represented by halogen anion, perchloric acid anion, antimony hexafluoride anion or nitric acid anion).

Abstract: A light-emitting display panel comprising an opaque background having a front face of dark color fitted with a plurality of light-emitting elements, the front face and the light-emitting elements being covered by a front optical filter. The front optical filter is a substantially neutral absorbant filter having a transmission coefficient lying in the range 10% to 60% over substantially the entire visible light spectrum, the display panel not having any other optical filter interposed between the background and the front optical filter.

Abstract: An explosion-proof film being good in visibility, scratch-resistance, and workability, and a cathode-ray tube using the film. The explosion-proof film includes a transparent plastic film as a base material; and a reflection preventive film having two or more layers, which is formed on one surface of the plastic film; wherein, of the two or more layers of the reflection preventive film, at least one has a light absorption function, and at least another has a conductive function. The explosion-proof film is stuck on a surface of a panel glass constituting a display screen of a cathode-ray tube, to thereby give an explosion-proof function to the cathode-ray tube, to achieve lightweightness of the cathode-ray tub, and to obtain the optimum visual contrast. The explosion-proof film may be formed of three or more layers.

Abstract: A method for forming a conductively coated matrix structure for separating rows and columns of sub-pixels on the faceplate of a flat panel display device. In one embodiment, the present invention deposits a photoresistive material over the interior surface of a faceplate having a non-conductive matrix structure formed thereon. The photoresistive material is deposited into sub-pixel regions separated by the matrix structure. The photoresistive material is dried and exposed in the sub-pixel regions. After unexposed photoresistive material is removed, a layer of aluminum is evaporated over the interior surface of the faceplate such that the matrix structure and the exposed layer of photoresistive material in the sub-pixel regions is coated with a conductive layer of aluminum. Next, the present invention applies an etchant to the exposed photoresistive material disposed in the sub-pixel regions.

Abstract: The present invention provides an inexpensive cathode ray tube envelope which suffers considerably diminished glass browning in comparison with traditional cathode ray tube envelopes. The method of reducing glass browning in cathode ray tubes, and a suitable glass composite and glass composition are also provided. The cathode ray tube envelope of the present invention includes a screen which has an inner and an outer glass layers. The inner layer is made of lead-free glass whereas the outer layer is made of lead-containing glass. In the operational cathode ray tube of the present invention, the electron beams emitted therein, are absorbed by the inner layer without substantial browning, since the inner layer does not contain material that cause browning, and do not penetrate to the lead-containing outer layer. At the same time, the X-rays produced in the cathode ray tube are effectively and efficiently blocked by the lead-containing outer layer.

Abstract: A cathode-ray tube including: a flat panel with an inside to which fluorescent material of Red, Green and Blue is applied; a funnel combined to a rear end of the flat panel; an electron gun provided in a neck part of the funnel and radiating electron beam; a flat tension shadow mask installed to the inside of the flat panel at regular intervals and having a plurality of passing holes formed for the passage of electron beams; a rail supporting the flat tension shadow mask for regularly maintaining interval of the tension shadow mask and a surface of the panel; and a magnetic shield shielding an external magnetic field, where the rail has a magnetic shield connecting part for installing the magnetic shield within the cathode-ray tube.

Abstract: The display screen (3) of a cathode ray tube (1) is provided with an antistatic coating (8) which comprises conductive, for example ATO (Sb:SnO.sub.2) particles. The coating comprises at least one additional layer (10) of silicon dioxide to obtain an antireflective effect.

Abstract: The present invention is directed to methods and apparatus for enhancing the performance of visual display units which utilize plasma display panels. More specifically, the present invention provides methods and apparatus for providing an electrical noise suppressing/chromaticity enhancing accessory device for positioning in front of the viewing surface of a plasma display panel. In its most basic embodiment, the accessory device of the present invention comprises a first and a second rigid substrate laminated together by a laminating layer; an optically selective coating providing high photopic transmittance, continuous high electrical conductivity for RFI shielding, and reflectivity specifically within the near-IR region that is mechanically protected by being sandwiched between one rigid substrate and the laminating layer; and, a multiple-dye coating for selectively absorbing IR energy emissions and selectively balancing the chromaticity of the PDP display.

Abstract: A display window of a display device is provided with an anti-static, anti-reflection filter. Said filter comprises a conductive layer including metal particles and transparent particles, which layer is covered with a further transparent layer. The metal particles are responsible for the conduction which is preferably below 1000 ohm, and the transparent particles are responsible for the transmission of light. The assembly of the conductive layer and the transparent cover layer has a very low reflection, preferably below 1%.

Abstract: Disclosed is a phosphor suitable for use in a cathode-ray tube, a fluorescent lamp, a radiation intensifying screen, which comprises transparent spherical particles having an average particle size of 0.5 to 20 .mu.m and a ratio of the major diameter to the minor meter of individual particles in the range of 1.0 to 1.5, and ultrafine particles having a diameter of 0.2 .mu.m less in an amount of 5 wt % or less.

Abstract: A method for forming a silica film on a face panel is disclosed. The method includes steps of preparing a first composite having a staring material of a silica-titania two component system where alcohol is added as a catalyst; preparing a second composite having a titaniumalkoxide or a derivative of the titaniumalkoxide as a catalyst; mixing the first and second composites at a predetermined ratio; agitating the face panel; and calcinating the coated colloidal solution at a temperature of 160-200.degree. C. The silica-titania two-component system is selected from a group consisting of a tetraethyl-silicate and a tetraethyl-silicate oligomer. The tetraethyl-silicate oligomer has a degree of polymerization of 40, 51 or 56.

Abstract: The present invention is directed to apparatus for enhancing the performance of visual display units which utilize plasma display panels. More specifically, the present invention provides apparatus for providing an electrical noise suppressing/chromaticity enhancing accessory device for positioning in front of the viewing surface of a plasma display panel (PDP). In its most basic embodiment, the accessory device of the present invention comprises an optically selective coating providing high photopic transmittance, continuous high electrical conductivity for RFI shielding, and reflectivity specifically within the near-IR region. It also preferably includes a multiple-dye coating for selectively absorbing IR energy emissions and selectively balancing the chromaticity of the PDP display and a plastic substrate layer to provide impact resistance.

Abstract: Method for fabricating an inner shield for use in a color cathode ray tube, is disclosed, for preventing degradation of a color finesse of the color cathode ray tube, the method including the steps of drawing or forming a piece of thin sheet of aluminum killed steel to form an inner shield of required form, annealing the inner shield in a reducing atmosphere at a temperature above a recrystallization temperature of the aluminum killed steel for improving a non-uniform magnetic distribution thereof, and coating black ironoxide film on a surface of the annealed inner shield.

Abstract: An interior or exterior design lighting assembly with a photosensitive sheet member in spaced relation to said assembly capable of aesthetically concealing its inner componentry by having said photosensitive sheet member adapting a darkened appearance when said assembly is in its de-energized state. When the light assembly is energized said photosensitive sheet member will render its darkened state to adapt a transparent state allowing for full light transmission to occur.

Abstract: Openings are created in a structure by a process in which a plate is furnished with a sacrificial patterned masking layer divided into multiple laterally separated mask portions. A primary layer of actinic material is provided over the masking layer and in space between the mask portions. Material of the primary layer not shadowed by a mask formed with the mask portions is backside exposed to actinic radiation. Material of the primary layer not exposed to the radiation is removed. Segments of the masking layer not covered by exposed material of the primary layer are then removed. Consequently, openings extend through the primary layer where the segments of the masking layer have been removed. The process is typically employed in forming an optical device such as a flat-panel cathode-ray tube display in which the openings in the primary layer receive light-emissive material.

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 cathode ray tube device has a neck, a funnel, a face panel, an inner conductive film disposed on an inner surface of the funnel, a first outer conductive film disposed on an outer surface of the funnel, and a deflection yoke. The inner conductive film and the first outer conductive film act as a capacitor. A second outer conductive film for electric field shielding is disposed on an outer surface of the funnel. The second conductive film is disposed between the deflection yoke and the first outer conductive film in such a way that the second outer conductive film is separated from the deflection yoke and is not covered by the deflection yoke.

Abstract: A magnetism shield for a color cathode ray tube is disclosed including: a shadow mask through which an electron beam passes; a mask frame to which the shadow mask is fixed; an inner shield fixed to the mask frame and for preventing the path of the electron beam from being distorted due to magnetism; a panel; a phosphorous surface formed on the inner surface of the panel; and means for shielding an area placed between the shadow mask and phosphorous surface.

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 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: Adherence of the phosphor screen to the face panel of a color cathode ray tube is improved by placing a UV-reflective filter on the inside of the face panel prior to photolithographic forming of the screen, in order to reflect transmitted UV light back onto those areas from which the light emerged, thereby effectively increasing the exposure dosage of those areas.

Abstract: The invention relates to a display screen having a phosphor layer of a phosphor composition of a phosphor coated with an oxygen compound of one of the elements magnesium, calcium, barium, zinc and aluminium, and with colloidal SiO.sub.2 having an average particle size of 70 nm.ltoreq.d.ltoreq.130 nm. The invention further relates to a phosphor composition of a phosphor coated with an oxygen compound of one of the elements magnesium, calcium, barium, zinc and aluminium, and with colloidal SiO.sub.2 having an average particle size of 70.ltoreq.d.ltoreq.130 nm, and to a method of manufacturing the phosphor composition.

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 shield for a screen of an image display device comprises a substrate including a pair of opposing faces, an anti-static coating on each of the opposing faces and an outer coating on each of the anti-static coatings, opposite the substrate. The shield is mounted in spaced apart relation from a screen of an image display device. The outer coating preferably is softer than the screen but harder than the case of the display.

Abstract: A coating for an interior of a color cathode ray tube. The coating includes a graphite, two ferric oxides, a disperser for forming a uniform mixture of the graphite and the two oxides, and an adhesive for adhering the coating on the interior of the color cathode ray tube. The first ferric oxide has no Fe.sup.2+ ions. The other ferric oxide has Fe.sup.2+ ions and has a grain diameter less than that of the first ferric oxide. The coating eliminates internal discharging of the CRT when the power is switched on or off.

Abstract: The pigment dispersion composition having a good dispersibility, a good transparence and an anti-coating properties, which contains 0.5 to 50 parts by weight of an inorganic pigment, at least one type of dispersant selected from the group consisting of a sodium salt, an ammonium salt and an amine salt of an acrylic resin, an acryl copolymer resin, a polycarbonic acid, a condensation product of aromatic formalin sulfonate, and water or a solvent miscible with water.

Abstract: A multi-layer flat panel display screen. The present invention includes a multi-layer flat panel display screen including a rear polarizer for polarizing incident light; a back glass structure disposed adjacent to the rear polarizer; a thin film matrix for selectively polarizing light emitted through the rear polarizer, the thin film matrix including a transistor layer having a two-dimensional matrix of individually addressable transistors; a color filter layer; and a liquid crystal layer disposed between the transistor layer and the color filter layer.

Abstract: A display screen for a cathode ray tube has an adjustable transmission curve in the visible spectral range of (.lambda.) between 380 to 780 nm. The display screen includes: a glass containing an oxide compound and being recyclable by melting under oxidizing conditions and without changing its characteristics and its color; the display screen having a transmission between 70% and 90% and at least one coating applied to the glass; the coating including the oxide compound; and/or, the coating including a component which forms an oxide compound in a melt of coated display screens which oxide component is likewise contained in the glass; and/or, the coating further including TiQ.sub.2 ; and/or, the coating further including titanium or compounds of titanium from which TiO.sub.

Abstract: A cathode ray tube comprising a vacuum enclosure including a glass panel 1 whose inner face is coated with a phosphor film 4 to form a screen; a neck portion housing an electron gun; and a funnel portion connecting the glass panel and the neck portion. A multi-layered anti-reflection, anti-electrostatic charge film formed on the outer face of the glass panel is constructed of a high refractive index film having a refractive index of 1.6 to 2.2 and a low refractive index film having a refractive index of 1.3 to 1.58. The high refractive index film is sandwiched between the outer face of the glass panel and the low refractive index film, and an unevenness having an average diameter of 5 to 80 .mu.m is provided at the interface between the high refractive index film and the low refractive index film. The interface has a height of 10 to 40 nm.

Abstract: A second coat film is formed on a first coat film containing a conductive substance, the second coat film having an expansion coefficient almost the same as the expansion coefficient of the first coat film under a sintering condition. The first and second coat films are sintered at the same time. Thus, a conductive anti-reflection film with sufficiently low surface resistance, excellent water resistance and chemical resistance, and reduced reflected light can be obtained. When the conductive anti-reflection film is used, a cathode ray tube that is almost free from the AEF (Alternating Electric Field) and that displays a high quality picture for a long time can be obtained.

Abstract: The present invention provides a plasma display front panel comprising a transparent substrate which is produced by molding a resinous composition containing the following components (a) to (c), and has a 50% or more transmittance of light with a wavelength in the range of 450 nm to 650 nm, and a 30% or less transmittance of light with a wavelength in the range of 800 nm to 1000 nm;(a) a monomer having an unsaturated double bond and/or polymer thereof;(b) a phosphorus atom-containing compound; and(c) a copper atom-containing compound.The attachment of this to the front of a plasma display can prevent the effect of near-infrared rays arising from the display on the peripheral devices.

Abstract: A second film that contains a substance that secures the conductivity of conductive particles is formed on a first film that contains the conductive particles. The first film and the second film are sintered at the same time. Thus, a conductive anti-reflection film having a sufficiently low surface resistance with a sufficient transmissivity for a high transparency can be obtained with high cost performance. When the conductive anti-reflection film is used for a cathode ray tube, it can almost prevent the AEF (Alternating Electric Field), display a picture in high quality, and be excellent in cost performance.

Abstract: After adhesive resin is applied to a surface of a flat panel, a front panel is glued thereto. One side of the front panel is contacted to the adhesive resin layer with the front panel tilted toward the surface of the flat panel. Then, the front panel is moved slowly to be close and parallel to the front panel. Finally, the front panel is pressed to the surface of the flat panel. Afterward, the adhesive resin is hardened. It is preferable that the thickness of the adhesive resin applied to the surface of the flat panel is decreasing from the side to which the side of the front panel is contacted, to the opposite side. By the above-mentioned method, an image display apparatus having multilayer structure comprising of a flat panel for displaying image, an adhesive resin layer and a front panel can be manufactured efficiently.

Abstract: A CRT assembly prevents high tension leakage from a seal. The CRT assembly includes a conductive tape for electrically connecting an outer conductive coating of a funnel part of the CRT and a tension band around a panel periphery. An insulating tape is inserted between the conductive tape and a seal of the CRT assembly so that the conductive tape is separated from the seal of the CRT assembly.

Abstract: Disclosed is a color cathode ray tube including an in-line electron gun, in which a high-resistance film whose resistance R at T.degree.C. has a resistance-temperature characteristic represented by d(Log R(T))/dT.gtoreq.-0.01 at least at a temperature ranging from 20.degree. C. to 40.degree. C. and is approximately 5.times.10.sup.13 .OMEGA. or less at about 25.degree. C. is formed on the inner wall of the neck.

Abstract: A color cathode ray tube includes a faceplate and a phosphor screen provided on the inner surface of the faceplate and including red, green, and blue phosphor layers. A color filter layer is interposed between the inner surface of the faceplate and the phosphor screen. The color filter layer includes color filters opposed individually to the phosphor layers of the phosphor screen and having colors corresponding thereto. Color filters of each color have a higher transmittance for light beams with wavelengths which are in a range of .+-.20 nm of the maximum emission spectrum wavelength of the phosphor layers of the corresponding color than for light beams with wavelengths which are outside the range and which are between 400 nm and 650 nm.

Abstract: Disclosed herein is a process for producing a color filter for liquid crystal display device by applying inks to a base by an ink-jet printing system to arrange colorants on the base, which comprises the steps of applying inks, which each comprise a homopolymer of a monomer represented by the formula (I) ##STR1## or of the formula (II) ##STR2## wherein R.sub.1 is H or CH.sub.3, and R.sub.2 and R.sub.3 are independently H or an alkyl group having 1 to 5 carbon atoms, and/or a copolymer of the monomer with another vinyl monomer and can be cured by light or heat, directly onto the base or onto a resin layer provided on the base by the ink-jet printing system, thereby arranging colorants contained in the inks; and then curing the thus-applied inks by light exposure or heating.

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

Abstract: An adherent polyester film laminate (A) having a coating layer of a composition formed on one side or both sides of a polyester film, the composition comprising, as main components, (i) an aqueous polyester having a secondary transition point of 40 to 85.degree. C. and (ii) a fatty acid bisamide; a polyester film laminate (B) having a hard coat layer formed on the coating layer of the laminate (A); and a polyester film laminate (C) having an anti-reflection layer formed on the hard coat layer of the laminate (B). Since these laminates are excellent in adhesive force, transparency and slipperiness and has an anti-reflection property, they are useful as a face surface protective material for glass and displays.

Abstract: A cathode ray tube display device including unnecessary radiating magnetic field reducer which improves the ability to reduce an unnecessary radiating magnetic field, especially, generated by a vertical deflection coil. A pair of coil is disposed in opposing relationship on the opposite sides of the ferrite core along an X-axis or in the horizontal direction of the deflection yoke so as to be in contact with an open side end of the ferrite core. Each coil has a shape curved with a predetermined radius of curvature conforming to the shape of the outer peripheral surface of the ferrite core. The ferrite core acts as a magnetic material for the coils which reduces the unnecessary radiating magnetic fields to increase the coil inductances to thereby produce a large extremely low frequency magnetic field (ELMF) reducing effect.

Abstract: The pigment dispersion composition having a good dispersibility, a good transparence and an anti-coating properties, which contains 0.5 to 50 parts by weight of an inorganic pigment, at least one type of dispersant selected from the group consisting of a sodium salt, an ammonium salt and an amine salt of an acrylic resin, an acryl copolymer resin, a polycarbonic acid, a condensation product of aromatic formalin sulfonate, and water or a solvent miscible with water.

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: Disclosed are an ultrafine particle film which is effective for the prevention of an electrostatic charge and reflection and can be applied to a large area at a low cost, a cathode ray tube to which the ultrafine particle film is applied, and image display plate to which the ultrafine particles is applied, and a process for producing the ultrafine particle film which comprises attaching a coating solution bath to a Braun tube surface and the like, introducing a containing solution containing anti-reflection SiO.sub.2 ultrafine particles and antistatic SnO.sub.2 ultrafine particles, and elevating up or down on the Braun tube surface and the like at a constant rate.

Abstract: A anti-reflection member provided with an antistatic function and an electromagnetic radiation shielding function and having a reflection preventing optical thin film excellent in adhesion with the hard coat layer.The anti-reflection member comprises a laminate composed of substrate, hard coat layer, and reflection preventing optical thin film having at least two layers, the first layer of the reflection preventing optical thin film provided in contact with the hard coat layer comprises a transparent conductive oxide film (for example, SnO.sub.2, ZnO, In.sub.2 O.sub.3, or ITO) formed by reactive physical vapor phase deposition, and the second layer of the reflection preventing optical thin film consists of a material (for example, SiO.sub.2 or MgF.sub.2) having a refractive index smaller than that of the first layer.

Abstract: An optical element (8) is provided on a substrate, for example a display screen (3) of a display device (1), which optical element comprises a light-transmitting layer whose transmission in the visible region varies in response to a change in ambient light. The optical element (8) is characterized in that it further comprises a colored coating which selectively absorbs light in the visible region. The colored coating has such an absorption characteristic that the color coordinates (x;y) of the combination of the light-transmitting layer and the colored coating vary in such a way, as a result of a variation in ambient light, that a line, which interconnects the color coordinates, is partly situated in an elliptical area with achromatic point (0.333;0.333) in the color triangle, which ellipse comprises a major axis and a minor axis, which major axis terminates in (0.30;0.28) and (0.36;0.38) and the eccentricity of which ranges between 2 and 3.

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.