Abstract: The present invention provides an improvement in the mounting of a cathode-ray tube within a bezel. The cathode-ray tube includes a unitary shellbond frame having integral mounting lugs which are positioned at locations either in the corners or off of the corners. The mounting lugs are formed with tapered sections along a depth dimension to allow a tube having the shellbond frame applied to be simply lowered into a bezel having lug receiving recesses of a complimentary shape. The tapered lug and complimentary lug receiving recess provides self-alignment of the tube before it is secured to the bezel.

Abstract: A funnel-and-neck sealing body comprises a funnel having a substantially rectangular large opening to which a panel for projection tube is sealed, and a circular small opening; and a neck tube of substantially a cylindrical shape sealed to the small opening of the funnel. The neck tube has an electron gun installing region for installing an electron gun therein, and a yoke mounting region for mounting a deflection yoke externally thereon, wherein an outer diameter of the yoke mounting region is smaller than an outer diameter of the electron gun installing region.

Abstract: In evaluating whiteness of light from a light source or a luminaire, whiteness W is given by the following equation,

Abstract: A panel glass wherein a surface treating film is formed on a substrate glass so that the surface treating film has a transmittance distribution reverse to the transmittance distribution of the substrate glass, thus providing a uniform-brightness image with a flattened panel glass.

Abstract: A cover plate covering a display panel of a display device has a transparent base having a surface facing the display panel and provided with reflection-reducing minute irregularities. The reflection-reducing minute irregularities consist of numerous projections and numerous valleys lying between the projections, and meet a condition expressed by: PMAX≦&lgr;MIN, where PMAX is the maximum distance between the tips of the adjacent projections, and &lgr;MIN is the minimum wavelength in a visible region in a vacuum. The sectional area ratio of total area of sections of the projections of the transparent base in a plane parallel to the transparent base in the plane increases continuously and gradually in a direction from the tips of the projections toward bottoms of the valleys.

Abstract: A panel defining a front exterior of a cathode ray tube has an inner surface overlaid with a phosphor screen, and an outer surface overlaid with a tinted coating layer, wherein the tinted coating layer varies light transmission at the center and the periphery of the panel by being dark at the center and gradating brighter toward the periphery thereby preventing a difference in brightness of the panel between the center and the periphery thereof due to incremental growth in the volume of a black matrix and in the thickness of the panel toward the periphery.

Abstract: For use in a color cathode ray tube (CRT) having a display screen with a flat outer surface and a curved inner surface, a 2-layer antistatic and antireflective coating for the display screen's flat outer surface compensates for the variation in screen thickness to provide uniform light transmission through the screen and coating combination, a high degree of video image contrast, effective electrostatic shielding and discharge, and reduced light reflectivity. The coating includes a first inner electrically conductive layer disposed on the CRT display screen's flat outer surface containing carbon black particles for a high level of video image contrast and improved electrical conductivity for electrostatic shielding and discharge. The extent of light transmission through the inner conductive layer may be adjusted in accordance with the display screen's thickness by varying the amount of carbon black particles in the coating solution.

Abstract: A glass bulb for a cathode ray tube comprising a panel portion having a substantially rectangular face portion and a funnel portion having a neck portion, wherein when the glass bulb is used for a cathode ray tube, the glass bulb at least regionally suffers from a tensile stress resulting from the atmospheric pressure on the outer surface of the glass bulb having a vacuum inside, at least part of the face portion of the panel portion where the tensile stress over the face portion has a maximum value &sgr;VP has a compressive stress layer formed by chemical tempering on the outer surface, and the &sgr;VP, the magnitude of the compressive stress on the compressive stress layer &sgr;C MPa, and the thickness of the compressive stress layer tC &mgr;m satisfy the following relationship: 120/tC≧(1−|&sgr;VP/&sgr;C|)>30/tC provided that &sgr;VP≧20 MPa.

Abstract: A panel glass having a surface treating film formed on a substrate glass so that an overall transmittance distribution within an effective picture plane satisfies a specific mathematical expression, whereby, even with a flattened panel glass, a uniform-brightness image can be observed with a good contrast, and occurrence of a double image is suppressed.

Abstract: A cathode ray tube has, on an external surface of a face-panel, an anti-reflection film in which a layer mainly consisting of SiO2 is laminated on a transparent conductive layer that includes at least one of colored ITO and colored ATO, and a coloring matter that has a color that is a complementary color with respect to the colors of ITO and/or ATO. As the colored ITO and/or colored ATO, one that has a particle diameter of from 10 to 500 nm is employed. In addition, as the coloring matter, a dyestuff that has the maximum absorption in the wavelength range of 550 to 600 nm or the like is employed. Value of surface resistance of the anti-reflection film is preferable to be 1×106 &OHgr;/sq or less. A cathode ray tube having such an anti-reflection film can prevent effectively AEF from occurring and realize an improved contrast and comfortable body color.

Abstract: A color cathode ray tube of the present invention includes an evacuated envelop that is structured from a panel having a phosphor screen on its inner surface, a neck portion containing therein an electron gun assembly, and a cone-shaped section called the funnel for integrally coupling the panel and the neck together, wherein when the main scanning direction of a display screen formed of the panel is defined as an X direction whereas a direction at right angles to the main scan direction is as a Y-direction, an equivalent radius of curvature Rxo of an outer surface of the panel in the X direction is at least 2.6 times greater than an equivalent curvature radius Rxi of the inner surface while forming on the inner panel surface an inside light absorption layer that is comprised of pigments as its principal component.

Abstract: A display device includes a display screen, a surface of which is provided with an anti-reflection filter having a conducting layer having metallic particles and transparent areas. The conducting layer is provided with a transparent layer. The transparent layer has a thickness smaller than or equal to the thickness of the conducting layer. The display screen is provided with at least one electrically conducting strip having a metal layer and an adhesive layer provided with electrically conducting particles. The electrically conducting strip is in local electrical contact with the metallic particles of the anti-reflection filter via the conducting particles of the adhesive layer.

Abstract: Implosion protection band for color cathode ray tube having a panel with a wedge ratio of 1.1˜1.8 and a substantially flat outer surface, wherein the implosion protection band is strapped around an outer circumference of the panel to satisfy a condition of 0.2≦UW/LW≦0.5, where the UW denotes an upper band width and the LW denotes a lower band width with reference to an extension line from an inside surface of the panel at a center thereof, thereby reducing a maximum stress on the panel by approx. 5%˜7% compared to the same in the related art and improve an implosion proof characteristics.

Abstract: The present invention aims at maintaining the high focusing performance with a low deflection power in a projection tube which is used as a projection type TV receiver or a projector and is operated at a high voltage and with a single-electron-beam high current. A neck outer diameter of a portion on which a deflection yoke is mounted is made smaller than a neck outer diameter of a portion which accommodates an electron gun. A final electrode of the electron gun has a diameter thereof gradually decreased toward a phosphor screen. The maximum anode voltage of the projection tube is set to equal to or more than 25 KV and the maximum beam current is set to equal to or more than 4 mA.

Abstract: A projection type cathode ray tube which has excellent optical characteristics and endurance thanks to the enhanced cooling effect and is manufactured efficiently at low cost. The thickness of a panel is uniform throughout the panel except its peripheral portion contacting a coupler (a cooling liquid holder). The cooling effect on the panel by a cooling system is uniform throughout the entire panel, enhancing the optical characteristics and endurance of the panel. In the manufacturing process applying heat to the panel, a reduction in the cooling temperature and the cooling time causes no difference in temperature, achieving uniform cooling. The panel except its peripheral portion is a curved portion in the concave form. For the interest of higher adhesion, it is sufficient to polish only the peripheral portion adhering to the edge of the opening on the rear side of the coupler, which reduces the polishing time.

Abstract: A panel has a flat external surface and has a curvature on an inner surface thereof. A coating having light absorption characteristics is formed on the external surface of the panel. To the top of the coating, a film which has light absorbing characteristics and contains an adhesive is adhered. The light absorption by the coating is large at the central portion of the panel and is small at the peripheral portion of the panel. The light absorption characteristics of the film is approximately uniform on the entire surface of the panel. Due to such a constitution, a color picture tube having a flat external surface, the least brightness difference and an excellent contrast can be realized.

Abstract: A color picture tube has a panel which is substantially flat on its outer surface, while an inner surface of the panel is curved, and a shadow mask having a curved plane with a curvature that is greater than that of the curved plane on the inner panel surface. The panel is made of glass, such as a tint material, a ring-like magnet assembly (PCM) for convergence adjustment is provided outside of the neck, a first electromagnetic quadrupole coil is further attached to a portion outside of the neck for causing an electron beam spacing to change or vary in accordance with the deflection angle, and a second electromagnetic quadrupole coil is attached to a deflection yoke. The distance between adjacent ones of three cathodes of an electron gun is determined to be greater than or equal to 6.0 millimeters (mm).

Abstract: A substrate 2 is autorotatably installed in a vacuum chamber 1 at an upper part thereof. MgF2 granules 3 as a film source material are put in a quartz boat 4 and mounted on a magnetron cathode 5. The magnetron cathode 5 is connected through a matching box 6 to a 13.56 MHz radio frequency power source 7. Cooling water 8 for holding the temperature of the magnetron cathode 5 constant flows on a lower face of the magnetron cathode 5. A side face of the vacuum chamber 1 is provided with gas introduction ports 9, 10 for introducing gas in the vacuum chamber 1. A shutter 11 is placed between the magetron cathode 5 and the substrate 2. This structure provides a process enabling forming a thin film at a high speed by sputtering, especially, a high speed sputtering enabling forming a thin fluoride film free of light absorption.

Abstract: In a glass panel for cathode ray tube of which effective screen diameter D along the diagonal axis of the glass panel is more than or equal to 500 mm, and average radius of curvature of an outer surface of a face portion 11 is more than or equal to 10,000 mm, when a distance h along a tube axis from a contact between an effective screen end of an inner surface of the glass panel and a blend R portion 12 to a seal edge surface 14 is defined as a length of a skirt portion 13, and a glass wall thickness of the seal edge surface 14 of the skirt portion is defined as t, ranges of h and t are specified by ratios with respect to the effective screen diameter D, and a product of h and t is also specified to satisfy a predetermined range in relation to the effective screen diameter D.

Abstract: A CRT coupling apparatus of a projection television couples a CRT which forms a picture to a lens which magnifies the picture formed by the CRT and projects it onto a screen. The CRT coupling apparatus includes: a CRT bracket supporting the CRT; a lens bracket supporting the lens; a coupler placed between the CRT and the lens; and a spring wire fixing the CRT bracket and the lens bracket to the coupler by applying elastic force in mutually approaching directions. One side of the spring wire is connected to a side of the CRT bracket facing away from the coupler, and the other side of the spring wire is connected to a side of the lens bracket facing away from the coupler. The apparatus also includes an earth assembly installed in the CRT bracket and contacting a backplate of the CRT to draw static electricity generated in the CRT away from the CRT. Sealing elements are provided between the coupler and the CRT and lens, respectively.

Abstract: A cathode ray tube includes a panel having a substantially flat outer surface and an inner curved surface with a phosphor screen. The panel has a substantially rectangular effective screen portion with two long sides parallel to each other, two short sides parallel to each other and four rounded edges interconnecting each long side and the neighboring short side. The effective screen portion is structured such that a first line V1 interconnecting centers of the long sides, a second line H1 interconnecting centers of the short sides and a third line D1 interconnecting centers of the rounded edges opposite to each other meet at a point. The effective screen portion has a first thickness Tv at the centers of the long sides, a second thickness Th at the centers of the short sides, a third thickness Td at the centers of the edges and a fourth thickness Tc at the meeting point of the all three lines V1, H1 and D1.

Abstract: Substrate carrying a mixed organic conductive polymer/transparent metal oxide coating having a thickness between 100 and 600 nm. The conductive polymer polyethylene-dioxythiophene (PEDOT) is an interesting material to reduce the alternating electric field (AEF) emitted at the front of a colour monitor tube. The processing of the PEDOT is based on chemical polymerisation of ethylenedioxy-thiophene (EDOT) and Fe(III) toluene sulphonate on a face plate of the tube. After the polymerisation is completed, the Fe salt is extracted from the coating by rinsing with an ethanolic solution. If TEOS is used, a hybrid PEDOT/SiO2 film is formed. The specific conductivity is 120 S/cm and the average transmission (380-780 nm) 80% for a layer thickness of about 300 nm.

Abstract: A cathode ray tube (CRT) having a phosphor screen in which red, green, and blue phosphors are located in a black matrix in a pattern, at the inside of a panel, a low-reflectivity coating layer located at the outside of the panel, the low-reflectivity coating layer having a reflectivity of 2.0% or less near 480˜600 nm, wherein the panel is glass containing neodymium (Nd) in a concentration of 0.1˜1.5 wt % and praseodymium (Pr) in a concentration of 0.1˜0.7 wt %. The CRT has improved brightness and contrast characteristics, and has an enlarged color reproduction range. Also, the problem of the unattractive color of the CRT itself under an external illumination is solved.

Abstract: A material is disclosed which is suitable for reducing the reflection of information displays such as a CRT, LCD, plasma tube, etc., and is characterised by an improved pencil hardness and excellent optical properties (lower average reflection, higher bandwidth). The anti-reflection material of the invention comprises an anti-reflective coating 20 and an optional top coat 10 on a flexible glass substrate 30 that is capable of being wound around a cylindrical core having a radius of 1.5 m. In a preferred method of the present invention the glass substrate 30 is provided with anti-reflective coating 20 using a continuous web coating process while being laminated to a polymer support 50 by using adhesive layer 40. Upon delamination (arrows 60) the adhesive layer 40 may remain fixed to glass substrate 30 (right embodiment of FIG. 1) or to polymer support 50 (left embodiment of FIG. 1).

Abstract: In a color cathode ray tube having a vacuum vessel that comprises a panel, a neck for housing an electron gun therein, and a funnel for connecting the panel and the neck, in which the inner surface of the panel glass is coated with a phosphor layer in different colors to give a display screen; the panel glass contains ions capable of selectively absorbing light within the range of visible rays, and its outer surface is coated with an electric conductive surface film.

Abstract: Disclosed is a CRT panel. The panels includes a display portion defining a distal end of the panel; a curved lateral wall extending from the display portion toward a funnel of the CRT, ends of the lateral wall being joined to the funnel; a phosphor screen formed on an inside surface of the display portion, the phosphor screen including RGB phosphor pixels and a black matrix layer between the RGB phosphor pixels; and light transmittance compensating means for compensating for differences in brightness of the phosphor screen. The light transmittance compensating means is provided on an outside surface of the display portion and has varying levels of light transmittivity over its surface.

Abstract: A glass envelope for a cathode ray tube (10) and a method of production. The envelope comprises (12) a panel member having a thickness (t) that is defined by an equation which involves net tensile stress; wherein the panel having a net tensile stress not exceeding 1150 psi, having a surface compression induced during panel manufacture, and having an implosion protection band (30) shrink-fitted around a skirt (20) on the panel that augments surface compression in the panel (12), whereby the panel thickness is substantially less than that of a corresponding untreated tube envelope.

Abstract: A cathode ray tube with a vacuum enclosure, including a glass panel having an inner face coated with a phosphor film to form a screen, a neck portion housing an electron gun, and a funnel portion connecting the glass panel and the neck portion. A high refractive index film made of electrically conductive metal oxide or metal (e.g., precious metal) particles and 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, are formed on the outer face of the glass panel. The high refractive index film is sandwiched between the outer face of the glass panel and the low refractive index film and an average roughness of an outer surface of said low refractive index film is less than an average roughness of an unevenness of an interface between the high refractive index film and the low refractive index film.

Abstract: There is provided a field leak preventing coating film of a cahtode ray tube, comprising a vacuum case comprising the panel section, a neck section and a funnel section connecting the panel section and the neck section; a fluorescent film applied on an inner face of the panel section; and an electron gun, stored in the neck section, for emitting three electron beams toward the fluorescent film, by adhering a double coating film composed of a conductive first layer mainly composed of particles of one or more kinds of metal among noble metal elements of gold (Au), silver (Ag) or platinum (Pt) and a second layer mainly composed of silicon dioxide (SiO2) or magnesium fluoride (MgF2) on an outer face of a faceplate of a panel section of the color cathode ray tube.

Abstract: A cathode ray tube (CRT) includes a base film and a reflection preventing multiple layer film on one surface of the base film, an adhesive layer on the other surface of the base film, including an adhesive polymer resin, and at least one organic or inorganic pigment or dye having a main light absorption region including a wavelength of 490 or 575 nm. The reflection preventing multiple layer film has, alternately stacked, a high refractive layer and a low refractive layer. The functional film has a wide application range, e.g., from a dark tint panel having low light transmission to a clear panel having a light transmission of 80% or more. A CRT having such a functional film has improved contrast characteristics and provides a high quality of picture and good color. The film is attached to the external surface of the glass panel at room temperature so that physical and other characteristics of the CRT are not adversely affected by sintering at a high temperature.

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: An optical filter comprises a transparent and a filter layer. The filter layer contains a dye and a binder polymer. The dye is a cyanine dye represented by the formula (I). The filter layer further contains a specific metal complex. in which each of Z1 and Z2 independently is an non-metallic atomic group forming a five-membered or six-membered nitrogen-containing heterocyclic ring; each of R1 and R2 independently is an alkyl group, an alkenyl group, an aralkyl group or an aryl group; L1 is a methine chain consisting of an odd number of methines; X is an anion; and each of a, b and c independently is 0 or 1.

Abstract: There is provided a field leakage preventing coating for a cathode ray tube, including a vacuum envelope having a panel section, a neck section and a funnel section connecting the panel section and the neck section; a fluorescent film applied on an inner face of the panel section; and an electron gun, mounted in the neck section, for emitting three electron beams toward the fluorescent film. The field leakage preventing coating is formed by adhering a double coating film composed of a conductive first layer mainly composed of particles of one or more kinds of metal among noble metal elements of gold (Au), silver (Ag) and platinum (Pt) and a second layer mainly composed of silicon dioxide (SiO2) or magnesium fluoride (MgF2) on an outer face of a faceplate of a panel section of the color cathode ray tube.

Abstract: The present invention enables eye contact between conferees during a teleconference using a terminal equipped with a beamsplitter for reflecting an image of a video display so that only the reflection and not a direct view of the display is seen by the conferee. The camera is positioned behind the viewing side of the beamsplitter to capture the conferee's image through the beamsplitter. The direct view of the display is blocked by an image blocking film applied between the beamsplitter and the display. Blocking the direct view of the video display greatly improves teleconferencing by eliminating the distraction of simultaneously viewing both the video display and the reflection of the display. The present invention also substantially improves available desktop space, functional options by providing a direct view and a reflected view of the display, and portability.

Abstract: A cathode ray tube includes a panel having a substantially flat outer surface and an inner curved surface with a phosphor screen. The panel has a substantially rectangular effective screen portion with two long sides parallel to each other, two short sides parallel to each other and four rounded edges interconnecting each long side and the neighboring short side. The effective screen portion is structured such that a first line V1 interconnecting centers of the long sides, a second line H1 interconnecting centers of the short sides and a third line D1 interconnecting centers of the rounded edges opposite to each other meet at a point. The effective screen portion has a first thickness Tv at the centers of the long sides, a second thickness Th at the centers of the short sides, a third thickness Td at the centers of the edges and a fourth thickness Tc at the meeting point of the first to third lines V1, H1 and D1.

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: An optical filter comprises a transparent support and a filter layer. The filter layer has an absorption maximum in the wavelength range of 500 to 550 nm. The filter layer further has another absorption maximum in the wavelength range of 560 to 620 nm. The optical filter has a transmittance in the range of 40 to 85% at the absorption maximum in the wavelength range of 500 to 550 nm. The optical filter further has a transmittance in the range of 0.01 to 80% at the absorption maximum in the wavelength range of 560 to 620 nm.

Abstract: An image relay arrangement (20) for use with a curved CRT faceplate (11) to relay a picture to a position in front of the faceplate comprises a first, imaging, microlens array (22), a second, field, microlens array (23) and a third, re-imaging, microlens array (24) which are spaced from one another and have corresponding microlens elements (25, 26, 27). At least one of the first and third arrays is curved with its spacing from the adjacent array varying over its area related to the faceplate curvature. Through this arrangement, the picture at the curved faceplate can be imaged onto a plane where, for example, a lenticular screen is located enabling autostereoscopic displays to be produced.

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: The optical element (29) comprises a substrate (28) provided with a light-transmitting layer (20) whose transmission in the visible range varies in response to a variation in light. The optical element (29) is characterized in that an anti-reflective layer (21) is provided between the substrate (28) and the light-transmitting layer (20), the refractive index of said anti-reflective layer preferably ranging from 1.5 to 2.2. The light-transmitting layer (20) may further be provided, on a side of the light-transmitting layer (20) facing away from the substrate, with a further anti-reflective layer (22) having a refractive index which preferably ranges between 1.3 and 1.6. The light-transmitting layer may comprise an electrochromic element (20) as well as a photochromic element. The optical element (29) is preferably provided on the outside of the display window (28) of a display device.

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: 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: 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: 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: An object of the present invention is to provide a CRT for improving brightness without changing a conventional electron gun, a light emitting layer, etc.A color cathode ray tube according to the present invention is characterized in that both or one of a panel glass 3 and a safety glass 1 used on a front face of the color cathode ray tube uses glass having characteristics in which spectroscopic transmittance to an electromagnetic wave near 580 to 700 nm in wavelength is relatively higher than spectroscopic transmittances to electromagnetic waves near 430 nm and 530 nm in wavelength.

Abstract: There are disclosed an image display panel having an antistatic film comprising a SiO2 coat of transparent and electroconductive properties on the front surface of said panel; the coat containing fine particles of at least one compound selected from electroconductive metal oxides and hygroscopic metal salts; and a process for producing the same.

Abstract: A color picture tube is disclosed, that comprises an outer sheath having a electron gun, the outer sheath being airtightly sealed, a face plate having light transmissivity and disposed on the front surface of the outer sheath, and a large number of red, blue, and green pixels regularly arranged inside the face plate, wherein the pixels have a fluorescent substance layer and a color filter, the fluorescent substance layer being lit by a radiation of an electron beam, the color filter being disposed between the fluorescent substance layer and the face palate, and wherein green pixels have a chromaticity that is plotted in the fourth quadrant of a coordinate system of a (L*a*b*) color system where a* is the horizontal axis and *b is the vertical axis when light of a standard light source C is reflected on the outside of the face plate.