Abstract: A color cathode-ray tube-yoke combination comprises a color cathode-ray tube having a glass envelope and a yoke for producing magnetic fields positioned thereon. At least one semi-flexible corrective magnet is attached to a curved portion of the envelope. The novel corrective magnet is improved over prior corrective magnets by the inclusion therein of at least one portion of reduced thickness which increases the flexibility of the corrective magnet to provide conformity to the curved surface portion of the envelope.

Abstract: A cathode-ray tube-yoke combination comprises a cathode-ray tube having a glass envelope and a yoke fixedly positioned on the envelope with a body of cured polymeric material. The novel composition of the polymeric material comprises a UV-curable adhesive and UV-transmissive particles of a suitable material in an amount sufficient to accelerate the curing of the adhesive. A method to accelerate the curing is also described.

Abstract: An antistatic, glare-reducing coating, as for the surface of the viewing surface of a CRT is prepared by (a) warming a glass support surface above room temperature, (b) coating a surface of the warm support with an aqueous solution containing a lithium-stabilized silica sol and an inorganic metallic compound, and drying the deposited coating, (c) heating the glass support surface and the coating to a temperature of about 65.degree. C. for about 30 seconds, and (d) washing and then drying the coating.

Abstract: A color cathode-ray tube comprises an evacuated envelope having an electron gun for producing at least one electron beam and, preferably three beams, a phosphor screen and a shadow mask adjacent to the screen. The mask has an improved heat dissipative, electron reflective coating on its electron gun-facing surface to minimize the effects of overall mask doming and blister warpage. The coating comprises a compound selected from the group consisting of bismuth (tri)oxide-potassium silicate and tungsten-potassium silicate. A method of making and applying the coating also is disclosed.

Abstract: A method for preparing an integral cathode substrate and support includes the steps of placing formed metal parts on a pin holder, masking selected surface portions of the formed metal parts, etching the unmasked surface portions, and then removing the mask. The present method is an improvement over prior methods since the parts are arranged in a staggered array to increase the turbulence of the etchant during the etching step. The turbulence provides additional oxygen to increase the rate and uniformity of the etching.

Abstract: A spray shield for a faceplate panel having a viewing widow and an integral peripheral panel sidewall which terminates in a seal land includes a gasket of a low durometer high temperature elastomer which envelopes the seal land for preventing pull-through of a spray coating. The shield and the gasket prevent the spray coating from being deposited on a predetermined portion of an interior sidewall portion of the panel and on the seal land. Since the gasket prevents pull-through of the spray coating, none of the spray coating is deposited on the exterior surface of the panel.

Abstract: An aluminized viewing screen structure for a cathode-ray tube includes a faceplate panel having a barrier coating and a heat absorptive overcoating comprising a plurality of layers overlying the aluminum metal layer. The barrier coating and the overcoating are applied to the panel which is preheated to accelerate drying of the barrier coating and the overcoating. The novel process includes (a) tilting the preheated panel to a 60.degree..+-.10.degree. angle relative to a horizontal plane, (b) loading the tilted panel onto a carrier, (c) and advancing the carrier by means of a conveyor in a first direction, through a spray assembly. A plurality of spray guns are mounted on a reciprocating device which moves up and down, that is, in a second and a third direction which is different from the direction of motion of the conveyor. The spray guns are directed substantially perpendicular to the faceplate panel.

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: A CRT comprising a screen support, a luminescent viewing screen on the support, a light-reflective metal layer on the screen, and a particulate layer of carbon particles and preformed silica particles on the metal layer. The particulate layer may be made by spraying a suspension of carbon (amorphous carbon and/or graphite) and silica (less than 0.1-micron size) on the metal layer while it is preheated in the 50.degree. to 75.degree. C. range.

Abstract: A cathode-ray tube comprising a glass viewing window having, on its external viewing surface, an antistatic, glare-reducing, image-transmitting coating. The coating has a rough surface and is composed essentially of a silicate material and a metallic compound in proportions to impart the desired antistatic characteristic without substantially degrading the image-transmitting capability of the coating. When the tube is operated, the coating is grounded either directly or through the metal implosion-prevention system on the tube.

Abstract: A glare-reducing coating, as for the surface of the viewing window of a cathode-ray tube, is prepared by (a) warming a glass support above room temperature, (b) coating a surface of the warm support with an aqueous solution containing a lithium-stabilized silica sol and drying the deposited coating, (c) washing the dry coating with water and (d) baking the washed coating, preferrably at about 90.degree. C.

Abstract: An undercoating is deposited on a glass workpiece and an overcoating is applied upon the undercoating. Then a plurality of related marks is recessed through the overcoating, thereby producing the novel workpiece. Each of the undercoating and overcoating is comprised of pigment particles and an alkali silicate binder. The alkali silicate binder of at least one coating, and preferably both the undercoating and the overcoating, consists essentially of a mixture of sodium silicate, potassium silicate and lithium silicate. The coatings are made from aqueous suspensions of pigment particles, dissolved sodium silicate, dissolved potassium silicate and lithium-stabilized silica sol.

Abstract: In a method of fabricating a cathode-ray tube, a layer comprising graphite, iron oxide, amorphous carbon and silicate binder is deposited on at least a portion of the interior surface of an envelope, the coating is baked in air until the amorphous carbon is substantially entirely gasified, and then the envelope is evacuated of gases and sealed.