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: 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: The invention relates to a glass composition for electric lamps which glass composition comprises SiO.sub.2, Al.sub.2 O.sub.3, Na.sub.2 O, K.sub.2 O, Li.sub.2 O, B.sub.2 O.sub.3, BaO and SrO and optionally CaO, MgO, ZnO, P.sub.2 O.sub.5, Sb.sub.2 O.sub.3, TiO.sub.2, MnO.sub.2, Fe.sub.2 O.sub.3 and/or CeO.sub.2. The composition according to the invention has a B.sub.2 O.sub.3 content of 1 to 2.8 mass %, a SrO content of 2.1 to 4.5 mass %, a BaO content of 3 to 6 mass % and of the components being present optionally, the amount of CaO is maximum 1 mass %, that of MgO is maximum 2.4 mass % and that of ZnO is maximum 3 mass %, on the condition that the total amount of SrO and B.sub.2 O.sub.3 is at least 3.6 mass %, the total amount of CaO and MgO is maximum 2.4 mass % and the total amount of MgO and ZnO is maximum 4.5 mass %.

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 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: 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: A novel type of glass having a low sodium content (<0.1 wt. % Na.sub.2 O), which can be used as a bulb glass (10) for "TL" lamps and for compact fluorescent lamps. Said glass is free of the toxic and/or corrosive components PbO, F, As.sub.2 0.sub.3 and Sb.sub.2 0.sub.3. Apart from favorable properties as regards phosphor poisoning and mercury absorption, resulting in a favorable maintenance of the lamp, said glass is characterized by a wide working range W.R. (=T.sub.work -T.sub.soft), so that glass tubing can be readily made of said glass. By virtue of the low liquidus temperature (T.sub.liq), the glass can be drawn into glass tubing which is free of crystals.

Abstract: The subject-matter of the invention is a glass composition, which is suitable for use in electric lamps, comprising SiO.sub.2, Al.sub.2 O.sub.3, Na.sub.2 O, K.sub.2 O, Li.sub.2 O, SrO, B.sub.2 O.sub.3, and optionally CaO, MgO, TiO.sub.2, P.sub.2 O.sub.5, Sb.sub.2 O.sub.3, Fe.sub.2 O.sub.3, MnO.sub.2, ZnO and/or CeO.sub.2. It is characterized in that its SiO.sub.2 content is 65-73 mass %, Al.sub.2 O.sub.3 content is 0.5 to 2.5 mass %, Na.sub.2 O content is 5 to 9 mass %, K.sub.2 O content is 8 to 12 mass %, Li.sub.2 O content is 0.4 to 1.5 mass %, SrO content is 0.5 to 5 mass %, B.sub.2 O.sub.3 content is 2.1 to 5 mass %. Furthermore in addition to the components listed, it optionally also comprises maximum 2.5 mass % CaO, maximum 3.8 mass % MgO, maximum 1 mass % TiO.sub.2, maximum 0.8 mass % P.sub.2 O.sub.5, maximum 0.5 mass % Sb.sub.2 O.sub.3, maximum 0.25 mass % Fe.sub.2 O.sub.3, maximum 0.25 mass % MnO.sub.2, maximum 5 mass % ZnO, and/or maximum 0.8 mass % CeO.sub.

Abstract: The thin-type display device (1) has a transparent front wall (3), which is provided with a display screen, and a rear wall (24) which extends parallel to said front wall (3), and said display device comprises at least an electron source and a duct structure. The display device (1) is characterized in that the rear wall (24) and walls (22, 22', 22") of the ducts of the duct structure are manufactured in a single piece. Preferably, the walls (22, 22', 22") of the ducts widen in the direction of the rear wall (24), with the angle, which opposing faces of the walls (22, 22', 22") of the ducts make with each other, ranging from 1.degree. to 30.degree.. Preferably, the rear wall (24) further comprises at least an upright side wall (32), which is integral with the rear wall (24). Preferably, the walls (22, 22', 22") are made from a glass having a temperature interval between the operating temperature and the softening temperature of less than 420.degree., perferably less than 360.degree.

Abstract: The invention relates to a glass composition for electric lamps comprising SiO.sub.2, Al.sub.2 O.sub.3, Na.sub.2 O, K.sub.2 O, Li.sub.2 O, B.sub.2 O.sub.3, BaO, CaO and MgO, in addition optionally SrO, Sb.sub.2 O.sub.3, MnO.sub.2, Fe.sub.2 O.sub.3, and/or CeO.sub.2. The glass composition according to the invention is characterized in that its B.sub.2 O.sub.3 content is 1 to 5 mass %, K.sub.2 O content is 7.2 to 11 mass %, BaO content is 5.5 to 9 mass % and MgO content is 2.1 to 4 mass %, furthermore in addition to the components listed, it optionally also comprises maximum 3.5 mass % ZnO, maximum 1.2 mass % TiO.sub.2 and maximum 0.8 mass % P.sub.2 O.sub.5 with the condition that the total amount of CaO, MgO and ZnO in the composition is at least 5.8 mass %. Stems and bulbs made of the above glass composition and used in electric lamps are also subject matters of the invention.

Abstract: An anti-reflection film is produced on the panel surface of a cathode-ray tube by:(A) preparing a solution for forming an anti-reflection film, which contains water and a metal alkoxide having the formula,M(OR).sub.nwherein M is a metal selected from the group consisting of Si, Ti, Al, Zr, Sn, In, Sb and Zn; R is an alkyl group having 1-10 carbon atoms; n is an integer of from 1 to 8; and when n is not 1, the alkyl groups represented by R may be the same or different,(B) coating the solution for forming an anti-reflection film on the outermost surface of the panel of a cathode-ray tube, and(C) applying an ultraviolet light to the solution for forming an anti-reflection film coated on said surface to cure the solution to form a transparent film with fine roughness.

Abstract: A display device includes: a rear wall (4); a display panel (3) spaced from the rear wall (4) and a display screen (7) having a pattern of phosphor pixels; an addressing structure (100) disposed intermediate the rear wall (4) and the display panel (3) for addressing the display screen (7); and an aperture spacer plate (101); wherein, the spacer plate (101) includes a glass material having an electrical resistance of log R at 250.degree. C..gtoreq.8. The spacer plate (101) including a glass material having an electrical resistance of log R at 250.degree. C..gtoreq.8 reduces the charging of the spacer plate walls and improves uniformity of phosphor brightness. The spacer plate may further comprise a glass having a lower alkali mobility less than sodium lime glass.

Abstract: A novel type of leadless, black glass for use in an envelope (3) of a black light blue lamp (1) which includes CoO in an amount of 0.45 to 1.0 wt % and NiO in an amount of 2.8 to 3.4 wt %. The glass does not comprise PbO and B.sub.2 O.sub.3. The glass can be exchanged with the existing lead-containing glasses for such envelopes (3). A burning lamp (1) having such an envelope (3) emits light of the same intensity and colour as the existing lamp and emits predominantly UV-A radiation.

Abstract: This invention is directed to glass compositions particularly designed for use in rear projection tube applications. The glass compositions are essentially free from ZnO, PbO and other easily reducible metal oxides other than Sb.sub.2 O.sub.3 and are essentially colorless. The glasses exhibit essentially no browning discoloration upon being exposed to high voltage electrons, linear coefficients of thermal expansion (25.degree.-300.degree. C.) between about 97-100.times.10.sup.-7 .degree. C., annealing points not lower than about 475.degree. C., strain points not lower than about 440.degree. C., electrical resistivities expressed as Log R greater than 9 at 250.degree. C. and greater than 7 at 350.degree. C., and liquidus temperatures below about 1100.degree. C. The glass compositions consist essentially, expressed in terms of weight percent on the oxide basis, of______________________________________ SiO.sub.2 55-60 K.sub.2 O 5.75-10 Al.sub.2 O.sub.3 1-3 Na.sub.2 O + K.sub.2 O 10.5-14 ZrO.sub.2 0-3.5 K.sub.

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

Abstract: A CRT bulb is constructed from a front panel having a higher coefficient of thermal expansion than the funnel section to which it is rigidly attached, thereby favorably stressing the bulb in the funnel-to-panel seal area resulting in a bulb with adequate evacuated strength while utilizing a thinner front panel than otherwise possible.

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

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

Abstract: A glass, which is particularly adapted to be melted in conventional glass melting furnaces and formed on a molten tin bath, and which demonstrates exceptional absorption of X-rays with a minimum linear absorption coefficient, measured at 0.6 Angstroms, of 24/cm. and having excellent resistance to electron browning and/or X-ray browning and contains the following components, by weight percent: SiO.sub.2 and Al.sub.2 O.sub.3 constituting about 57.0 to 68.0% with SiO.sub.2 constituting about 57.0 to 66.0% and Al.sub.2 O.sub.3 constituting about 0 to 5.0%; K.sub.2 O and Na.sub.2 O constituting about 10.0 to 18.0% with K.sub.2 O constituting about 7.0 to 11.0% and Na.sub.2 O constituting about 4.0 to 8.0%; BaO and SrO constituting about 16.0 to 24.0% with BaO constituting about 0 to 13.0% and SrO constituting about 11.0 to 21.0%; and CeO.sub.2 constituting about 0.1 to 1.0%.

Abstract: A family of lead silicate glasses particularly adapted to drawing of tubing for use in the neck section of a cathode ray tube. The glasses have internal liquidi below 750.degree. C., electrical resistivities over 8.0 ohm-cm (Log R.sub.350.degree. C.) and linear x-ray absorption values of at least 95 cm.sup.-1 at a wavelength of 0.6 Angstrom units. Their compositions consist essentially of, in weight percent as calculated on an oxide basis, 46-51% SiO.sub.2, 0.5-2% Al.sub.2 O.sub.3, 0.3-3% Na.sub.2 O, 9-13% K.sub.2 O, 2.5-6% SrO, 1-4% BaO, 30-33% PbO, 0-2% ZnO and 0.3-1% Sb.sub.2 O.sub.3.

Abstract: A cathode ray tube faceplate glass that is essentially free from fluorine and the oxides of lead arsenic and zirconium, exhibits linear X-radiation absorption coefficients of at least 28 cm.sup.-1 at a wavelength of 0.6 Angstroms and at least 8.5 cm.sup.-1 at 0.3 Angstroms, undergoes essentially no "browning" discoloration when subjected to high velocity electrons, has a viscosity at the internal liquidus of at least 100,000 poises (10,000 Pa.s), has a coefficient of thermal expansion (25.degree.-300.degree. C.) in the range of 97-100.times.10-7/.degree. C., has an annealing point not lower than about 500.degree. C. and a strain point not lower than about 455.degree. C., has an electrical resistivity expressed in log R, that is greater than 9 at 250.degree. C. and greater than 7 at 350.degree. C., the glass consisting essentially, expressed in terms of weight percent as oxide basis, of______________________________________ SiO.sub.2 60-65 SrO 8-12 Al.sub.2 O.sub.3 0-3 BaO 8-12 Na.sub.2 O 6.

Abstract: A colored contrast enhancement glass comprises, in wt. %:______________________________________ SiO.sub.2 40-60 B.sub.2 O.sub.3 0-6 Al.sub.2 O.sub.3 0-2 .SIGMA.Li.sub.2 O, Na.sub.2 O, K.sub.2 O = R.sub.2 O 24-30 .SIGMA.MgO, CaO, SrO, ZnO, BaO = RO 0-10 TiO.sub.2 1-3.5 CeO.sub.2 1-3.5 Nd.sub.2 O.sub.3 4-12 La.sub.2 O.sub.3 1-11 MnO.sub.2 0.1-1.0 Er.sub.2 O.sub.3 (when included) 0.2-1.0 CuO 0.1-0.5 CoO 0.0005-0.0040 V.sub.2 O.sub.5 0.05-0.50 Cr.sub.2 O.sub.3 (when included) 0.0005-0.0300 Photopic % T 12-24 % T @ 445 nm 20-30 % T @ 555 nm 26-36 % T @ 580 nm 0-3 % T @ 618 nm 23-35 % T @ 620 nm 23-34 ______________________________________having color properties corresponding to values of (x,y) of the larger quadrangle of FIG. 1.

Abstract: A strengthened high lanthanide-containing glass has the composition of, in mole percent______________________________________ SiO.sub.2 54-75 B.sub.2 O.sub.3 5-17 Li.sub.2 O 0-4 Na.sub.2 O 3-18 K.sub.2 O 0-4 Al.sub.2 O.sub.3 0-7 PbO 0-4 MgO 0-3 CaO 0-3 SrO 0-3 BaO 0-3 ZnO 0.1-10 TiO.sub.2 0-5 Ln.sub.2 O.sub.3 3-7 V.sub.2 O.sub.5 + Cr.sub.2 O.sub.3 + Mn.sub.2 O.sub.3 0-5 Fe.sub.2 O.sub.3 + CoO + NiO + CuO As.sub.2 O.sub.3 /Sb.sub.2 O.sub.3 0-0.4 ______________________________________wherein Ln is La, Ce, Pr, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm and/or Yb.

Abstract: A color cathode-ray tube having a face glass (1) coated with a plurality of phosphors (6B, 6G, 6R) different in luminescent color, the face glass (1) containing a colorant imparting a selective characteristic for absorbing light in the wavelength regions between the luminescent wavelength regions of the phosphors, (6B, 6G, 6R) and a colorant suppressing the light transmittance in the visible region, wherein the light transmittances in the luminescent wavelength regions shorter than the highest-visibility wavelength region are at least about 5% lower than the light transmittance in the highest-visibility region, while the light transmittances in the luminescent wavelength regions longer than the highest-visibility wavelength region is higher than the light transmittance in the highest-visibility region.

Abstract: X-ray attenuating polycrystalline ceramic materials having at least 20 wt. percent cerium oxide are disclosed. In addition, the materials can include one or more X-ray attenuating substances selected from the group including compounds of strontium, zirconium, yttrium, niobium, molybdenum, neodymium and tungsten. The materials can be formed in strong, non-porous bodies such as cathode ray tube funnels.

Abstract: A resin composition obtained by adding maleic anhydride to an unsaturated polyester resin composition comprising (I) an unsaturated polyester, (II) a styrene monomer, and (III) at least one polymerizable unsaturated compound, in limited amounts is low in viscosity, excellent in transparency and adhesiveness, able to prevent the generation of surface defects, and thus suitable for treating cathode-ray tubes.

Abstract: This invention relates to glass compositions especially suitable for projection cathode ray tube faceplates which are essentially free from PbO and other readily reducible metal oxides, fluorine, ZnO, TiO.sub.2, and MgO, and which consist essentially, in weight percent, of______________________________________ Li.sub.2 O 0.75-3 Li.sub.2 O + Na.sub.2 O + K.sub.2 O 11-16 Na.sub.2 O 5-7 CaO + SrO + BaO 21.5-26 K.sub.2 O 5-7 Al.sub.2 O.sub.3 1-2 SrO 7.5-10 ZrO.sub.2 2-7 BaO 14-16 CeO.sub.2 0.4-0.8 CaO 0-3 SiO.sub.2 55-60.

Abstract: X-ray attenuating ceramic materials having at least one substance selected from the group including compounds of strontium, zirconium, yttrium, niobium, molybdenum, neodymium and tungsten are disclosed. A zinc compound can be used for fluxing and X-ray attenuation in certain ceramic materials. The materials can be formed into strong, non-porous bodies such as cathode ray tube funnels. Such materials include forsteritic porcelains manufactured from batches containing strontium zirconate. Other X-ray attenuating ceramics contain a mixture of X-ray attenuating substances, including a compound of barium.

Abstract: A colored glass suitable for enhancing contrast of color CRT displays consists essentially of, in weight %:______________________________________ SiO.sub.2 40-60% B.sub.2 O.sub.3 0-6% Al.sub.2 O.sub.3 0-2% Sum Li.sub.2 O + Na.sub.2 O + K.sub.2 O 24-30% Sum MgO + CaO + SrO + BaO + ZnO 0-10% TiO.sub.2 1-3% CeO.sub.2 1-3% Nd.sub.2 O.sub.3 10-25% Er.sub.2 O.sub.3 1-5% Sm.sub.2 O.sub.3 0-3% Sum Er.sub.2 O.sub.3 + Sm.sub.2 O.sub.3 1-8% CuO 0.1-0.5% MnO.sub.2 0.1-1.0%.

Abstract: A glass composition specially useful in the glass envelope of TV receiver tubes and which is of the lead silicate type is disclosed comprising in weight percent 30-65% SiO.sub.2, 20-40% PbO, 5-20% alkali metal oxides, 0-2% Al.sub.2 O.sub.3, 0-10% alkaline earth metal oxides, 0.2-2% Sb.sub.2 O.sub.3, and 0.1-0.5% CeO.sub.2. The improvement resides in employment of a novel refining system when the glass is formed which employs Sb.sub.2 O.sub.3, niter and CeO.sub.2 as the refining agents in particular weight proportions to reduce the seed count in the molten glass while also reducing thermal shock breakage when the solid glass product is thereafter thermally reworked.

Abstract: The present invention relates to glass compositions suitable for cathode ray tube faceplates which are essentially free from readily reducible metal oxides, MgO, and fluorine, and which consist essentially, in weight percent on the oxide basis, of:______________________________________ SiO.sub.2 60-63 BaO 5.5-8.5 ZrO.sub.2 + Al.sub.2 O.sub.3 >4-6.25 Li.sub.2 O 0.25-0.8 CaO 1.5-4.0 Sb.sub.2 O.sub.3 0.25-0.55 Na.sub.2 O 7.25-9.25 TiO.sub.2 0.25-0.75 As.sub.2 O.sub.3 0-0.25 K.sub.2 O 6-8.25 ZrO.sub.2 4-6.25 Sb.sub.2 O.sub.3 + As.sub.2 O.sub.3 0.35-0.75 SrO 5.5-8.5 Al.sub.2 O.sub.3 0-<2 CeO.sub.2 0.15-0.5.

Abstract: A cathode ray tube comprises a face plate glass containing neodymium oxide (Nd.sub.2 O.sub.3); and a phosphor screen of plural color phosphors formed on an inner surface of said face plate glass wherein a phosphor of zinc sulfide activated with copper and aluminum (ZnS:Cu, Al) or a phosphor of zinc sulfide activated with copper, gold and aluminum (ZnS:Cu, Au, Al) is used as a green phosphor of said phosphor screen.

Abstract: The glass composition in accordance with the invention is characterized by the absence of alkali metal oxides and by the presence of at least 10% by weight of barium oxide.The glass composition in accordance with the invention has favorable working properties (melting temperature below 1500.degree. C., working range in excess of 200 Celsius degrees, it is very corrosion resistant (also in a strong electric field), it is resistant to metal vapors including mercury vapor, it does not attack a phosphor and it is not subject to blackening.The glass composition in accordance with the invention is extremely suitable for use in fluorescent lamps (TL-, SL- and PL-lamps) and in projection-television face plates.

Abstract: A cathode-ray tube comprising an evacuated envelope including a glass part and an electrically-conductive coating adhered to the glass part. The coating in the form of a patch or stripe consisting essentially of a major weight proportion of metallic silver particles, preferably in the form of flakes, and a minor weight proportion of lithium silicate binder. The electrically-conductive stripe or patch may be used to assure the electrical connection between an electrically-conductive metal body attached to and having a surface contiguous with a surface of the envelope and an electrically-conductive layer supported from that surface. The stripe or patch is applied from an aqueous slurry of silver particles and lithium silicate and is dried to a substantially water-insoluble, abrasion-resistant coating without or with high-temperature baking.

Abstract: New, PbO-free glasses for cathode ray tubes are composed of (in % by weight) 50-52 SiO.sub.2 ; 0-3 Al.sub.2 O.sub.3 ; 1-1.7 Li.sub.2 O; 6.5-10.7 Na.sub.2 O; 0-4.5 K.sub.2 O; 0.4-1.4 F; 0-0.5 TiO.sub.2 ; 0.2-1.2 CeO.sub.2 ; 0-5 ZnO; 0-7.0 BaO; 15-22 SrO; and 6.3-10.3 ZrO.sub.2, and are characterized by a high protective effect against X-rays while having at the same time good resistance to acid and stability to radiation.

Abstract: The disclosure is of a lead-free glass composition including SiO.sub.2, B.sub.2 O.sub.3, ZnO, Al.sub.2 O.sub.3, Na.sub.2 O, K.sub.2 O, CaO, and Li.sub.2 O. The glass is used as a cement frit and as an insulating layer in gas-filled display panels including an electrode which is insulated from the gas therein.

Abstract: A glass filter for contrast enhancement in a color CRT display devices comprises100 parts by weight of a base glass comprising, in % by weight3 to 70% SiO.sub.2,0 to 40% B.sub.2 O.sub.3,0 to 23% Al.sub.2 O.sub.3,0 to 23% R.sub.2 O (R.sub.2 O being at least one selected from the group consisting of Li.sub.2 O, Na.sub.2 O and K.sub.2 O),2 to 35% RO (RO being at least one selected from the group consisting of MgO, CaO, SrO, BaO, ZnO and PbO),0 to 10% TiO.sub.2,0 to 10% ZrO.sub.2,0 to 35% La.sub.2 O.sub.3 and5 to 40% Nd.sub.2 O.sub.3,at least two coloring components selected form the group consisting of 6 parts by weight or less CeO.sub.2, 1.0 parts by weight or less CuO, 3.5 parts by weight or less MnO.sub.2, 0.15 parts by weight or less CoO, 3.0 parts by weight or less Fe.sub.2 O.sub.3, 1.5 parts by weight or less NiO and 5.0 parts by weight or less Pr.sub.6 O.sub.11, andat least one coloring component selected form the group consisting of CeO, CuO, MnO.sub.2 and CoO.

Abstract: These objects have been attained by providing highly absorbent lead containing alkali metal silicate glasses for cathode ray tube image screens, having a linear absorption coefficient .mu. of >30 cm.sup.-1 (0.6 .ANG.) and with a high resistance to discoloration by X-ray and electron radiation, comprises, in weight percent:______________________________________ SiO.sub.2 20-65% P.sub.2 O.sub.5 + B.sub.2 O.sub.3 + Al.sub.2 O.sub.3 0-30% Li.sub.2 O 0-5% Na.sub.2 O 0-10% K.sub.2 O 0-15% MgO + CaO + ZnO 0-15% SrO 0-20% BaO 0-40% PbO 5-60% ZrO.sub.2 0-10% CeO.sub.2 0.1-5% Other Components 0-20%.

Abstract: In a cathode ray tube for a light source, a fluorescent surface adapted to emit light having one of three colors, red, green and blue is formed on the inner surface of a face plate which is provided at one end of a vacuum envelope, and an electron gun is disposed at the opposite end of the vacuum envelope in such a manner as to confront the fluorescent surface, at least the face plate being made of a glass material containing rare earth oxides Nd.sub.2 O.sub.3 and Pr.sub.2 O.sub.3, so that satisfactory color light and contrast are obtained even under the sun light.

Abstract: A color cathode ray tube comprises a fluorescent screen having one or more phosphors on an inner surface of a face glass for plural emission colors, and the face glass which contains a Nd.sub.2 O.sub.3 and other colorants to give a wavelength selectivity of light transmission of said face glass.

Abstract: An alkali-free glass composition for a photoetching mask is described, which comprises, all by mol, 55 to 65% SiO.sub.2, 7 to 11% Al.sub.2 O.sub.3, 1 to 11% PbO, 7 to 20% CaO, 3 to 13% MgO, 3 to 13% ZnO, 0 to 3% ZrO.sub.2, 0 to 3% F.sub.2, 0 to 5% As.sub.2 O.sub.3, and 0 to 5% Sb.sub.2 O.sub.3. This glass is free from defects such as pinholes, has a relatively low coefficient of thermal expansion and contains no air bubbles, and a photoetching mask composed of the glass composition.

Abstract: A panel glass of a color cathode ray tube exhibiting a high absorption of X-radiation and an excellent resistance to electron and/or X-ray browning, which is modified by 0.1-5.0 wt % Nd.sub.2 0.sub.3 to provide substantially higher relative light transmission in the green and in the red wavelengths of the visible spectrum and a greater selective light absorption in the yellow region of the spectrum, and which is further modified by 0.0005-0.05 wt % Cr.sub.2 O.sub.3 and 0-2 wt % Pr.sub.6 O.sub.11 to control the chromaticity value of the glass to be nearly equal to that of the light emitted from tricolor phosphor P22 and to suppress the dichroism of the glass for different ambient lights. Ingredients of the glass are as follows: 50-75% SiO.sub.2, 0-5% Al.sub.2 O.sub.3, 0-4% CaO, 0-3% MgO, 0-13% SrO, 0-16% BaO, 0-3% PbO, O-3% ZnO, 0-4% ZrO.sub.2, the sum of SrO+BaO+PbO+ZnO+ZrO.sub.2 being 5-25%, 0-4% Li.sub.2 O, 3-15% Na.sub.2 O, 2-15% K.sub.2 O, the sum of Na.sub.2 O+K.sub.2 O being 5-20%, O-2%, TiO.sub.

Abstract: A method of producing a graphite-based conductive coating composition to be applied to the interior wall of a color picture (cathode-ray) tube, which method comprises the steps of preparing a mixed solution of electroconductive materials by mixing graphite particles, a metal oxide and a surface treating agent with water, producing an electroconductive powder by instantaneously drying said mixed solution, and mixing said electroconductive powder with a silicate and a dispersant in water and stirring the mixture. Said metal oxide, which is a component of said mixed solution, is preferably titanium oxide and the like and said surface treating agent is preferably silicon oxide. It is also desirable that said mixed solution of electroconductive materials be dried instantaneously by spray drying.

Abstract: In a plurality of monochromatic colored light emitted cathode ray tubes arranged in a surface to form a huge screen for displaying a colored picture, glass for use in light-source cathode ray tubes for emitting the red or the blue light has the optical characteristics that it can well pass the light in the wavelength range of the remaining blue and yellow portions of the spectrum to thereby improve contrast of the monochromatic colored red or green light source cathode ray tube. The glass essentially consists, by weight, of 50-75% SiO.sub.2, O-5% Al.sub.2 O.sub.3, 0-4% CaO, 0-2% MgO, 0-12% SrO, 0-16% BaO, 0-3% PbO, 0-3% ZnO, 0-3% ZrO.sub.2, the sum of SrO+BaO+PbO+ZnO+ZrO.sub.2 being 1.5-25%, 0-4% Li.sub.2 O, 3-15% Na.sub.2 O, 1-10% K.sub.2 O, the sum of Li.sub.2 O+Na.sub.2 O+K.sub.2 O being 5-24%, 0-2% TiO.sub.2, 0.1-3% CeO.sub.2, 1-10% Nd.sub.2 O.sub.3, 0.5-5% Pr.sub.2 O.sub.3, and 0.1-4% Fe.sub.2 O.sub.3.

Abstract: A fluorine-free glass composition is disclosed especially adapted for forming the faceplate of a cathode ray tube such as a television tube. The glass is silica based and includes a fluorine-free flux and an X-ray absorber which may comprise lead oxide, barium oxide, strontium oxide, and mixtures thereof. Optionally, the glass may contain still other oxides to impart desired physical properties. The absence of fluorine avoids the usual problems of that ingredient in melting and processing the glass. In addition, the resultant glass as a faceplate provides improved protection to a viewer of a cathode ray tube by excellent absorption of X-rays.

Abstract: A getter body for use in encapsulated electrical components is of the type consisting of a powder mixture which has been compressed into tablet form. The powder mixture contains in addition to traditional getter material such as activated carbon, zeolite or the like, aluminum stearate and a binder containing a synthetic such as a polyamide. The getter body is produced in several sequential steps. The getter material is mixed with a polycarbonate or a water glass solution, which is then dried and then pulverized. To this first powder is added the aluminum stearate and the binder containing a synthetic. The resulting powder may then be dried and is then pressed into tablets. The tablets may then be heat-cured and are then surfaced polished. The resulting tablets have good abrasion resistance without a noticeable loss in the getter effectiveness.

Abstract: A getter device is disclosed in which at least on the exposed surface of a getter material filled in a metal getter container and containing a barium-aluminum alloy powder and a nickel powder is formed a gas-impermeable film of a boron compound or a mixture of a boron compound with silicon oxide.

Abstract: Glass compositions which are suitable for making face-plates of cathode-ray tubes used for displaying television pictures, particularly for displaying color television pictures. A problem in formulating such glasses is to obtain glasses which can be worked satisfactorily and which do not discolor significantly as a result of electron bombardment and X-ray irradiation. The glass compositions consist of the following constituents in the following quantities (expressed in % by weight):______________________________________ SiO.sub.2 57-65 ZrO.sub.2 1-4 Al.sub.2 O.sub.3 0-4 SrO 6-14 Na.sub.2 O 5.5-8.0 PbO 0-1 K.sub.2 O 7.5-10.0 Sb.sub.2 O.sub.3 + As.sub.2 O.sub.3 0-2 MgO 0-4 TiO.sub.2 0.2-2.0 CaO 0-4 CeO.sub.2 0.05-1.0 ______________________________________wherein wt. % Na.sub.2 O/(wt. % Na.sub.2 O+wt. % K.sub.2 O)=0.40-0.47 and wt. % BaO+2 wt. % SrO+2 wt. % ZrO.sub.2 +3 wt. % PbO>32.

Abstract: The instant invention is directed to faceplate glasses for television picture tubes which, because they are essentially free from MgO, have liquidus temperatures below 800.degree. C. Such glasses consist essentially, in weight percent on the oxide basis, of:______________________________________ SiO.sub.2 58-65 Al.sub.2 O.sub.3 1-3 CaO 1-4 SrO 6-12 BaO 2-9 PbO 1-3 Na.sub.2 O 5-9 K.sub.2 O 5-12 Na.sub.2 O + K.sub.2 O 14-18 TiO.sub.2 0.3-1 CeO.sub.2 0.05-0.

Abstract: There is disclosed an improved glass panel for a cathode ray tube adapted to use in color television reception. The panel glass undergoes a minimum amount of compaction on reheating, has a strain point greater than 470.degree. C., a liquidus below 900.degree. C., and a composition selected from a family within the SiO.sub.2 -Al.sub.2 O.sub.3 -MgO-CaO-SrO-BaO-PbO-Na.sub.2 O-K.sub.2 O field. Special additives in minor amounts include TiO.sub.2, CeO.sub.2, Sb.sub.2 O.sub.3, As.sub.2 O.sub.3, F, and oxide colorants.