Abstract: A display apparatus comprising an evacuated envelope having an interior surface and an exterior surface is disclosed. The envelope includes a faceplate having a luminescent screen on the interior surface thereof. An electron gun is disposed within a neck of the envelope for generating at least one electron beam that is directed toward the luminescent 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. A resistive primer coating is disposed on the envelope and forms a barrier between the yoke adhesive and the envelope. The resistive primer coating is formed from an aqueous formulation comprising a copolymer of chloroprene and methacrylic acid, a conductive filler material and at least one cross-linking agent.

Abstract: There is provided an image display device including a panel of good work efficiency which can prevent the destruction of its conductive coat due to discharge and can highly efficiently reduce the leakage of unwanted radiation electric fields. The image display device includes a panel grounding electrode which connects a conductive coat and a grounding member together, and the panel grounding electrode uses a conductive adhesive material having in the whole of an adhesive layer, and an insulative protective tape.

Abstract: Uniformity of the electron emission characteristics of electron emitting devices is improved. A substrate is formed with row-directional wires and column-directional wires electrically connected to electron emitting devices disposed in a matrix shape and each having electrodes and an electroconductive film. A pseudo row-directional wire is formed at a position X0 between a position X1 of a row-directional wire and a periphery of the substrate, and a pseudo column-directional wire is formed at a position Y0 between a position Y1 of a column-directional wire and a periphery of the substrate. Pseudo electrodes and are electrically connected to the pseudo row-directional wire and pseudo column-directional wire.

Abstract: A cathode ray tube includes an evacuated envelope including a face panel, a funnel, and a neck; a color selection apparatus mounted inwardly from the face panel; an electron gun mounted within the neck; a magnetic shield mounted connected to the color selection apparatus; and degaussing coils mounted to an outer surface of the evacuated envelope. A degaussing current flowing to the degaussing coils has a waveform such that a line connecting a peak A from where a maximum current value first starts to decrease and a peak G of a sixth cycle is a functional curve of a second degree or greater.

Abstract: A magnetron includes a ring-shaped anode, a cathode, an activating space, at least one permanent magnet and a magnetic flux carrying unit. The ring-shaped anode forms a plurality of resonance circuits. The cathode is disposed at the axial center of the anode to emit thermions. The activating space is formed between the anode and the cathode. The at least one permanent magnet is provided beside the anode. The magnetic flux carrying unit carries magnetic flux generated by the at least one permanent magnet to the activating space. A microwave oven and/or high frequency heating apparatus may utilize the magnetron.

Abstract: An electron lens is used for focusing electrons from a cathode to an anode. The lens includes a first conductive layer with a first opening at a first distance from the cathode. The first conductive layer is held at a first voltage. The lens also includes a second conductive layer with a second opening at a second distance from the first conductive layer and a third distance from the anode. The second conductive layer is held at a second voltage substantially equal to the voltage of the anode. The first and second openings are chosen based on the first voltage, the second voltage, the first distance, the second distance and the third distance. The opening focuses the electrons emitted from the cathode onto the anode to a spot size preferably less than 40 nanometers. The force created between the cathode and anode is minimized by the structure of the lens.

Abstract: A cathode ray tube including an internal magnetic shield in the shape of a hollow rectangular frustum including two long sides opposite to each other and two short sides opposite to each other, having an opening at its top and bottom attached to a mask and a frame. Each long side has a long side extension at a horizontal center located at the top of the internal magnetic shield where an electron beam enters the internal magnetic shield. The long side extensions enable the magnetic shield to reduce the deviation of an electron beam within the magnetic shield caused by an external magnetic field such as that caused by terrestrial magnetism.

Abstract: A display device can realize the highly efficient electron emission characteristics by ensuring the exposure of carbon nanotubes 13 in the inside of a vacuum by fixing the carbon nanotubes 13 to cathode wires 12 such that the carbon nanotubes 13 are not easily removed from the cathode wires 12 with the small resistance which enables the carbon nanotubes 13 to have the enough electron emission ability. Some end portions or some intermediate portions of the carbon nanotubes 13 are embedded into the cathode wires 12 formed on a rear substrate 11 and, at the same time, contact points where the carbon nanotubes 13 cross each other or portions in the vicinity of the crossing portions are bonded to each other by bonding films 14.

Abstract: A cathode ray tube includes a panel having a front screen portion on which a phosphor screen is formed and a panel flange formed on an edge of the front screen portion; a funnel connected to the panel flange; a deflection yoke disposed around the funnel; a neck connected to the funnel, an electron gun disposed in the neck; a color selection apparatus for selecting electron beams emitted from the electron gun and allowing the selected electron beams to land on corresponding phosphors, the color selection apparatus including a frame having a pair of supporting members disposed at a predetermined distance from each other in parallel and a pair of elastic members fixed on both ends of the supporting members to correspond to the lateral sides of the mask; and a shield apparatus for shielding geomagnetism, the shield apparatus being mounted on a circumference of the frame of the color selection apparatus and extended toward the neck.

Abstract: A discharge lamp driver circuit is provided which features a field canceller. The driver circuit includes a power supply circuit which turns on and off a switching element to step up a dc voltage and provide it for turning on a discharge lamp. The power supply circuit includes an electrical path through which an interrupted current arising from the on-off operation of the switching element flows. The field canceller includes an electric line through which the interrupted current having passed through the electrical path flows in an opposite direction, thereby producing a field canceling a field caused by flow of the interrupted current through the electrical path.

Abstract: There is provided a field emitter array on a substrate. The field emitter array includes field emitter devices. At least one of the field emitter devices includes a conducting gate layer having a top surface and at least one side surface, disposed over the substrate. The at least one of the field emitter devices also includes a field emitter tip disposed on the substrate adjacent the at least one side surface, and an insulating layer disposed at least on at least one side surface adjacent the field emitter tip to prevent arcing between the field emitter tip and the conducting gate layer.

Abstract: A cathode ray tube includes an evacuated envelope including a face panel, a funnel, and a neck; a color selection apparatus mounted inwardly from the face panel; an electron gun mounted within the neck; a magnetic shield mounted connected to the color selection apparatus; and degaussing coils mounted to an outer surface of the evacuated envelope. A degaussing current flowing to the degaussing coils has a waveform such that a line connecting a peak A from where a maximum current value first starts to decrease and a peak G of a sixth cycle is a functional curve of a second degree or greater.

Abstract: A surface treatment film composed of a conductive film with a surface resistance of 1×103&OHgr;/□ or more and an antireflection film is provided on the surface of a glass panel. A ground electrode is provided on the surface treatment film so as to be electrically connected with the conductive film. The ground electrode is grounded in a circuit manner. An area of the surface treatment film covered with the ground electrode is set at 500 mm2 or more. Thus, even in the case where the conductive film has a resistance of 1×103&OHgr;/□ or more, an effect of suppressing a leakage electric field to 1.0 V/m or less, which satisfies the TCO guideline, can be realized.

Abstract: Uniformity of the electron emission characteristics of electron emitting devices is improved. A substrate is formed with row-directional wires and column-directional wires electrically connected to electron emitting devices disposed in a matrix shape and each having electrodes and an electroconductive film. A pseudo row-directional wire is formed at a position X0 between a position X1 of a row-directional wire and a periphery of the substrate, and a pseudo column-directional wire is formed at a position Y0 between a position Y1 of a column-directional wire and a periphery of the substrate. Pseudo electrodes and are electrically connected to the pseudo row-directional wire and pseudo column-directional wire.

Abstract: The electric lamp has a light source (20) in an outer bulb (21). The light source (20) is secured in an envelope (1) by means of an insulator body (40) in which current connection conductors (43) are integrated and which is present in a lamp cap (10) of the reflector lamp. The lamp cap (10) is mechanically connected to a neck portion (5) of the envelope (1). The integrated insulator/current connector body (40, 43) enables electrical contacting, fixation, and mechanical adjustment of the light source (20) in the envelope (1).

Abstract: A cathode-ray tube for preventing electrification and shielding electromagnetic waves and manufacturing method thereof are provided. A cathode ray tube of the invention includes a transparent conductive film and a transparent insulating protective film, an electrode formed on at least a part of an inactive screen and on sides of the panel portion before the transparent conductive film and the transparent insulating protective film are coated; and a conductive tape coated with a conductive adhesive, electrically connecting the electrode and an, explosive-proof band. According to this invention, a panel of the cathode ray tube is grounded by an electrode being in direct contact with a transparent conductive film, which provides more effective grounding than that through a protective film.

Abstract: A multicolor organic light emitting device employs vertically stacked layers of double heterostructure devices which are fabricated from organic compounds. The vertical stacked structure is formed on a glass base having a transparent coating of ITO or similar metal to provide a substrate. Deposited on the substrate is the vertical stacked arrangement of three double heterostructure devices, each fabricated from a suitable organic material. Stacking is implemented such that the double heterostructure with the longest wavelength is on the top of the stack. This constitutes the device emitting red light on the top with the device having the shortest wavelength, namely, the device emitting blue light, on the bottom of the stack. Located between the red and blue device structures is the green device structure.

Abstract: A plasma display device includes front and rear substrates, strips of a conductive material on the front substrate, and an insulating layer covering the conductive strips, first and second electrodes parallel to each other and disposed on the insulating layer and a dielectric layer covering the first and second electrodes, third electrodes perpendicular to the first and second electrodes on the rear substrate, and a dielectric layer covering an interior surface of the rear substrate and the third electrodes, barrier walls defining discharge spaces on the dielectric layer of the rear substrate, and phosphor coatings between the barrier walls. The plasma display device further includes conductive strips at positions directly opposite the barrier walls on the inner surface of the front substrate, and an insulating layer over the inner surface of the front substrate covering the conductive strips.

Abstract: Disclosed is an electrode for an electron source, a method for producing the same, and an electronic tube using the same which provide a decreased thickness of an electron emitting source, and an improved current distribution percentage. The electronic tube comprises a substrate, an electron emitting source area formed on the substrate, and a shield area around the electron emitting area. The shield area is formed of a material that does not produce an electron emitting source, when the electron emitting source is produced by a dry method. As a result, if a space between an electron drawing electrode and the electrode for the electron source is narrow, the percentage of anode current increases in the total current, thereby improving the current distribution percentage.

Abstract: A cathode ray tube includes (a) an electron gun, (b) a funnel which is open at one end and in which the electron gun is located, (c) a face panel which is open at one end and connected to the funnel such that the funnel and the face panel define a closed space, (d) an internal magnetic shield which is located in the space and which is open at opposite ends such that electrons emitted from the electron gun pass therethrough and reach the face panel, (e) a mask frame which internally supports the internal magnetic shield, and (f) a shadow mask which is located in the space in facing relation with the face panel and which is supported by the mask frame. The internal magnetic shield has an edge facing to the face panel. The edge has a closed cross-section and has a projecting portion at least partially projecting from the edge towards the face panel. The projecting portion has a distal end closer to the face panel than a distal end of the shadow mask.

Abstract: A flat panel display is disclosed which includes a faceplate with a faceplate interior side, and a backplate including a backplate interior side in an opposing relationship to the faceplate interior side. Side walls are positioned between the faceplate and the backplate. The side walls, faceplate and backplate form an enclosed sealed envelope. A plurality of phosphor subpixels are positioned at the faceplate interior side. A plurality of field emitters are positioned at the backplate interior side. The field emitters emit electrons which strike corresponding phosphor subpixels. A plurality of scattering shields surround each phosphor subpixel and define a subpixel volume. The scattering shields reduce the number of scattered electrons exiting from their corresponding subpixel volume. This reduces the number of scattered electrons from charging internal insulating surfaces in the envelope, as well as striking the non-corresponding phosphor subpixels.

Abstract: In a gas discharge tube in accordance with the present invention, one or both of the inner wall face and outer wall face of a side tube body are provided with a coating made of a glass material or ceramics. As a result, the side tube body can be made of various materials regardless of properties of the gas filling the inside, whereby the gas discharge tube can have a wider range of processed forms and smaller dimensions at the same time, and its mass production can freely be carried out.

Abstract: Disclosed herein are a video display and a manufacturing method therefor, more particularly, there is provided a video display including a display panel having a plurality of anodes and cathodes arranged orthogonally to each other so as to form grids, a printed wiring board having a drive circuit with wirings for driving the display panel and a plurality of bumps for electrically connecting the wirings of the drive circuit to the anodes and the cathodes, and an adhesive layer for bonding the display panel and the printed wiring board to form a multilevel structure. With this structure, a large-sized video image with no discontinuities can be displayed, and the thickness of the video display can also be reduced.

Abstract: An image-forming device having, in an envelope, an electron-emitting element, an image-forming member for forming an image by irradiation of an electron beam emitted from the electron-emitting element, and an electroconductive supporting member for supporting the envelope. The potential of the supporting member is controlled to not be higher than the maximum potential applied to the electron-emitting element. The electron-emitting element and the image-forming member can be placed in juxtaposition on the same substrate, an electroconductive substrate can be additionally provided in opposition to the face of the substrate, and the supporting member can be connected electrically to one of the electrodes and also to the electroconductive substrate.

Abstract: A cathode ray tube which comprises a front panel coated with a nonglare film having a multi-layered structure. The multi-layered structure comprises at least a visible light absorbing layer containing a black dye, and an antistatic layer containing an inorganic metal compound as a conductive agent.

Abstract: Disclosed is a conductive antireflection film comprising a laminate structure consisting of a conductive layer and an insulating covering layer covering the surface of the conductive layer and a conductive member connected at one end to the conductive layer and exposed at the other end to the outside. The conductive member is brought into contact with an electrolytic solution so as to control the state of the metal contained in the conductive layer, making it possible to prevent effectively an electromagnetic wave from leaking to the outside and to obtain a clear image of a high contrast.

Abstract: A cathode ray tube includes a bulb having a screen, a conductive layer coated on the inner surface of the bulb, an electron gun mounted in the neck portion and having a final accelerating electrode electrically connected to the conductive layer, and leakage current shielding means installed in the neck portion, for shielding leakage current flowing along the inner surface of the neck portion from the conductive layer.

Abstract: A compensation device for convergence drift used in a CRT, including a convergence electrode attached on an outer surface of a neck portion, an inducement means for inducing static electricity from a voltage to be supplied for an inner graphite layer, and a connecting member formed between the convergence electrode and the inducement means to supply high potential from the inducement means to the convergence electrode. As the convergence electrode provides high potential generated from the inducement means to the neck portion, the compensation device decreases the potential difference between grid electrodes and the neck portion. Thus, the compensation device makes the electric fields, which cause the charges to be accumulated, to weaken so that the convergence drift is effectively reduced.

Abstract: A lighting system includes at least two light-emitting diodes each emitting, in operation, visible light in a preselected wavelength range. A converter converts part of the visible light emitted by one of the diodes into visible light in a further wavelength range so as to optimize the color rendition of the lighting system. The diodes include a blue light-emitting diode and a red light-emitting diode. Further, the converter includes a luminescent material for converting a portion of the light emitted by the blue light-emitting diode into green light.

Abstract: A resonant microcavity display (20) having microcavity with a substrate (25), a phosphor active region (50) and front and rear reflectors (30 and 60). The front and rear reflectors may be spaced to create either a standing or taveling electromagnetic wave to enhance the efficiency of the light transmission.

Abstract: A transparent electromagnetic radiation shield panel suitable for placement in front of a TV display device, particularly a large plasma display panel, or other such source of electromagnetic radiation to shield the viewer from electromagnetic radiation is provided, which transparent electromagnetic radiation shield material comprises a transparent electromagnetic radiation shield film, a transparent adhesive layer provided on an electromagnetic radiation shield layer of the film, and a display panel having the transparent electromagnetic radiation shield film laminated thereto via the transparent adhesive layer.

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: A front panel for a plasma display comprising a transparent substrate and two or more electroconductive films, each electroconductive film comprising a transparent polymer film with a transparent electroconductive layer on at least one surface thereof, can effectively shield an electromagnetic wave and can be produced in a simple process.

Abstract: A compact fluorescent lamp system includes a housing and an external base connector mounted in the housing. The external base connector receives electrical power from an external source. A ballast unit is secured within the housing and is electrically connected to the external base connector. The ballast unit controls the electrical power received from the external source. A lamp unit defines an interior volume. The lamp unit includes first and second lamp electrodes extending into the lamp unit. The lamp unit contains a gas which breaks-down permitting electrical current to pass through the lamp unit. An interior of the lamp unit is coated with a material which fluoresces when the gas within the sealed lamp unit ionizes. An electrically conductive hollow cylinder is located within the interior volume. A breakdown voltage path within the lamp unit is modified by the electrically conductive hollow cylinder.

Abstract: An anode ripple voltage waveform is detected by a capacitor built into a flyback transformer. The detected waveform is then phased by a phasing circuit, amplitude adjusted by an amplitude adjusting circuit and subsequently delivered to an addition circuit. A horizontal component is detected by a horizontal output transformer, then phase adjusted by a phasing circuit and subsequently amplitude adjusted by an amplitude adjusting circuit. Thereafter, the horizontal component is added to the anode ripple component by the addition circuit, inverted and amplified by an inverting amplifier, and then supplied to an antenna arranged in proximity to the cathode ray tube. Thus, electric fields radiated from the face of the cathode ray tube are suppressed.

Abstract: Hook- and loop-type tapes are selectively attached to a video display unit and to flexible elongated strips of magnetic material so that the strips of magnetic material may be removably mounted around the video display unit in orthogonally intersecting planes to absorb magnetic radiation from the source. Each strip of magnetic material has a grain orientation parallel to its longitudinal axis and may be formed from grain-oriented ferromagnetic material in the range from M3 to M7. A multiple-layer magnetic shielding material is provided by securing first and second layers of such grain-oriented ferromagnetic material together with the grain orientation of the first layer orthogonal to the grain orientation of the second layer. Each strip of magnetic material may also be formed from this multiple-layer magnetic shielding material.

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: A cathode ray tube display comprises a cathode ray tube (10) having a screen (11) connected to a neck portion (12) via a bell portion (13). Cancellation coil means (160,160') are arranged to receive a signal based on a scanning signal for the cathode ray tube and arranged to reduce stray magnetic fields radiating from the display. The cancellation coil means comprises a first cancellation coil (160) and a second cancellation coil (160') located on each of opposite sides of the cathode ray tube. The first cancellation coil (160) are located adjacent the bell portion and the second cancellation coil (160') being located adjacent the neck portion. The first and second cancellation coils each being contained in a plane substantially perpendicular to the screen of the cathode ray tube.

Abstract: An electromagnetically lossy liquid- or gas-tight fusion seal for use as a low pass radio frequency signal filter constructed as a matrix of glass binder and ferrimagnetic and/or ferroelectric filler. Metal cased electrical filters are made by reflowing the material to form fused glass-to-metal seals and incorporating electrical thru-conductors therein which may be formed as inductive windings.

Abstract: In an electron tube grounding device, an image display unit includes an earth plate for grounding an electron tube, and a degauss coil for magnetic erasing, which is improved to prevent the deformation of the earth plate for grounding a chassis frame which shields the electron tube and its periphery. The damage of the degauss coil can be caused by the assembling of the electron tube and the chassis frame. The electron tube grounding device includes an electrontube, a chassis frame for surrounding the electron tube, and an earth plate for grounding the chassis frame and the electron tube. The chassis frame includes a penetration aperture formed on one side thereof, and a rail means protrudently formed on the back portion of and outside the penetration aperture where the earth plate is inserted to be fixed.

Abstract: A field emission display (100) includes a dielectric layer (132) having a plurality of emitter wells (134), a plurality of electron emitters (136) disposed one each within the plurality of emitter wells (134), a plurality of conductive rows (138, 140, 142) disposed on the dielectric layer (132) and having sacrificial portions (154), an ion shield (139) disposed on the dielectric layer (132) and spaced apart from the sacrificial portions (154) of the plurality of conductive rows (138, 140, 142), and an anode (121) opposing the plurality of electron emitters (136) and defining a projected area (122) at the plurality of conductive rows (138, 140, 142). The sacrificial portions (154) of the plurality of conductive rows (138, 140, 142) extend beyond the projected area (122) of the anode (121).

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 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: A charge dissipation field emission device (200, 300, 400) includes a supporting substrate (210, 310, 410), a cathode (215, 315, 415) formed thereon, a dielectric layer (240, 340, 440) formed on the cathode (215, 315, 415) and having emitter wells (260, 360, 460) and a charge dissipation well (252, 352, 452, 453) exposing a charge-collecting surface (248, 348, 448, 449), for bleeding off gaseous positive charge generated during the operation of the charge dissipation field emission device (200, 300, 400), an electron emitter (270, 370, 470) formed in each of the emitter wells (260, 360, 460), and an anode (280, 380, 480) spaced from the dielectric layer (240, 340, 440) for collecting electrons emitted by the electron emitters (270, 370, 470).

Abstract: An auxiliary radiation shield for a CRT-type video display terminal includes a generally flat front portion having an at least partially transparent conductive central shield and an opaque frame-like conductive outer shield surrounding the central shield, with the transparent central shield having an area substantially equal to that of the faceplate of the CRT and the opaque outer shield having an area at least equal to that of the transparent central shield, whereby when the radiation shield is supported in front of the CRT with the transparent central shield disposed directly in front of the faceplate, the transparent central shield is in the path of the electrical field that would otherwise extend through the faceplate towards any user in front of the CRT, and the opaque outer shield intersects a substantial portion of the electrical fields that would otherwise extend from the sides and top of the CRT towards that user.

Abstract: An electrodeless fluorescent lamp having an emission suppression arrangement utilizing a capacitive filtering element formed by a first conductive layer disposed on a portion of the interior surface of the lamp envelope, a second conductive layer on a corresponding external portion of the lamp envelope and the glass material of the lamp envelope disposed therebetween, achieves significant emission reduction yet at the same time reduces eddy current losses otherwise occurring at the second conductive coating portion of the capacitive filtering element. A plurality of slots formed in the second conductive coating are effective so as to reduce the circular flow of eddy currents around the second conductive layer, such eddy currents as would otherwise adversely affect the Q of the circuit.

Abstract: The Electric lamp has a lamp vessel in which an electric element is accommodated, connected to current conductors which emanate from the lamp vessel. At least one of the current conductors has a length portion which is a solidified melt and in the area of which portion the current conductor has a kink. As a result of the conductor having a kink the electric element is aligned in the lamp vessel. The lamp can be obtained by melting the current conductor, e.g. by means of a laser, in the finished lamp.

Abstract: A cathode ray tube is provided. The cathode ray tube according to the present invention includes a panel having a fluorescent film formed on the inner surface thereof, a shadow mask frame assembly disposed inside the panel, a funnel to which the panel is sealed and having an electron gun installed in a neck portion thereof and a deflection yoke installed around a cone portion thereof, and a magnetic field shielding portion which is installed along the wall of the funnel and includes a metal plate for blocking the influences of terrestrial magnetic fields. In the cathode ray tube according to the present invention, it is possible to block the influences of terrestrial magnetic fields with a magnetic field shielding portion having a simple structure.

Abstract: In a cathode ray tube having an antistatic film 6 stuck to the front surface of a panel section 1 and a conductive tape 7 for grounding the end portion of the antistatic film 6 to the earth, a silicone adhesive 8 containing a conductive filler having an excellent close contact adhesion to silicon dioxide (SiO.sub.2) is interposed in at least a part of an close contact adhesion portion where the conductive tape 7 is stuck to the antistatic film 6. Thanks to the interposition of the conductive filler containing silicone adhesive 8, the resistances between the antistatic film 6 and the conductive tape 7 and between the silicone adhesive 8 and the conductive tape 7 can be lowered and sputtering which may be caused by the high voltage induced in the antistatic film 6 is prevented, so that the breakage of the antistatic film 6 can be prevented at the close contact adhesion portion.

Abstract: In an X-ray image intensifier tube apparatus inc-luding a cylindrical magnetic shield placed to surround the outer periphery of an X-ray image intensifier tube, a ferromagnetic thin plate is placed in front of a convex input window of a vacuum envelope and a correcting magnetic coil is placed inside the cylindrical magnetic shield to surround the input window. This structure allows an output image which is substantially free of distortion to be obtained.