Abstract: The present invention relates to an application liquid for forming a semiconductor film, the application liquid comprising: an inorganic semiconductor particle; and a compound having a relative permittivity of 2 or more or a compound having reducing power against the inorganic semiconductor particle; a method for producing a semiconductor film comprising a step of applying the application liquid; a semiconductor film and a semiconductor element comprising the semiconductor film; and a method for producing the semiconductor element.

Abstract: This invention provides a novel process for producing an electrochemical display element, which can easily form a white scattering layer between opposed electrodes, has a high level of suitability for production, and has high stability after long-term use. The production process is characterized in that a film containing a white scattering material and a polymeric binder is formed on at least one electrode in opposed electrodes, the other electrode is disposed so as to face the electrode with film formed thereon, a low-viscosity electrolyte is poured into a space between the opposed electrodes, and the polymeric binder is dissolved in or swollen in the electrolyte to form a gel-like electrolyte layer containing the white scattering material and the polymeric binder within the space.

Abstract: Methods and systems for coating of semiconductor devices using droplets of wavelength conversion or phosphor particles in a liquid medium. A plurality of nozzles delivers a controlled amount of the matrix material to the surface of the semiconductor device, with each of said nozzles having an opening for the matrix material to pass. The opening has a diameter wherein the diameter of the phosphor particles is less than or approximately equal to one half the diameter of the opening. The phosphor particles are also substantially spherical or rounded. The nozzles are typically arranged on a print head that utilizes jet printing techniques to cover the semiconductor device with a layer of the matrix material. The methods and systems are particularly applicable to covering LEDs with a layer of phosphor materials.

Abstract: A liquid suspension of phosphor particles and method for depositing the liquid suspension. The suspension advantageously has a low viscosity with a high solids-loading of phosphor particles. The apparent density of the phosphor particles is well-controlled to enable the particles to be dispersed in the liquid vehicle. The suspension is useful in direct-write tools such as ink-jet devices.

Abstract: The present invention is to provide a process for manufacturing a fluorescent film wherein the order of coating the fluorescent films of a color Braun tube and the thickness of the film are adjusted to reduce the amount of red fluorescent material employed for red fluorescent film without deteriorating the quality of the red fluorescent film, thereby lowering the cost for manufacturing. The process first forms the red fluorescent film on the panel of a color Braun tube and then forms the blue and green fluorescent films subsequently thereafter.

Abstract: An optical compensatory sheet producing apparatus produces an optical compensatory sheet having a liquid crystal layer. In the apparatus, a rubbing unit is supplied with resin film having a first layer including resin, and subjects the first layer to a rubbing process, so as to form an orientation layer. A dust remover removes dust from the orientation layer by use of liquid such as perfluorocarbon, to which the orientation layer is insoluble. A liquid crystal layer coater is disposed downstream from the dust remover, for coating the orientation layer with coating liquid including liquid crystalline compound, so that the liquid crystal layer is formed.

Abstract: A method of producing a color cathode ray tube occurs by forming pigment-coated particles by applying pigment coatings to green, blue, and/or red fluorescent particles, such that the coatings cover about half of each particle; forming a black matrix film having light transmission window portions on the inner surface of a glass panel; and applying the pigment-coated particles to the light transmission window portions so that substantially all of the pigment coating on each particle is located between the phosphor it coats and the inner surface of the glass panel.

Abstract: The invention relates to a method and an arrangement for shielding an electronic means (40, 41) against external electromagnetic interference on one hand, and preventing the electronic means from interfering with closeby electric devices on the other hand. According to the invention, a shielding film (42, 43) with one or more layers is formed comprising one or more intrinsically conductive polymer films (43) and one or more insulating films (42). The shielding film (42, 43) so formed is attached to the surface of the electronic means (40, 41) using a heat treatment or a vacuum treatment or the combination of the two and, if necessary, a separate layer of glue. The invention also relates to a method for electrically connecting (44, 45, 46, 47) the intrinsic polymer layer (43) reliably to the electronic means (40, 41). The invention further relates to a method for using the electromagnetic shield to form capacitors and resistors for the electronic means.

Abstract: This invention provides a process for forming a phosphor screen of a monochrome cathode ray tube (projection tube) which has an improved luminance remaining property. The phosphor particles are settled on an inner surface of a glass bulb with a binder of SiO.sub.2 to form a phosphor layer, in which the amount of SiO.sub.2 is reduced by rinsing with a water-based liquid like deionized water and a PVA solution before forming an organic layer on the phosphor layer. The phosphor screen has an improved luminance remaining property that is close to that of a direct viewing color cathode ray tube, without lowering the screen quality.

Abstract: This invention relates to aqueous emulsions based on acrylic polymers and their use for preparing films to be used in processes of preparation of cathode ray tubes, having filming temperature between about 20.degree. and 40.degree. C. which after drying produce films which, submitted to heating in nitrogen atmosphere, have a weight loss, for films having a thickness of 1-2 mm, and for the following cycle of heating:11.degree. C./minute from 25.degree. to 375.degree. C.,5.degree. C./minute from 375.degree. to 440.degree. C.,isotherm at 440.degree. C. for 45 minutes,respectively of:from 25.degree. to 245.degree. C. lower than 15% by weightfrom 245.degree. to 375.degree. C. from 30 to 70% by weightfrom 375.degree. to 440.degree. C. of 97-99% by weightafter the isotherm at 440.degree. C. the remaining residue is lower than about 0.3% by weight, the curve gradient in the on set point ranging from 0.03 to 0.08 mg/.degree.K., and at 360.degree. C. from 0.12 to 0.30 mg/.degree.K.

Abstract: A method for forming a very fine phosphor screen of a monochrome cathode ray tube whose roughness is inconspicuous even if the picture is enlarged. White phosphors (P45) whose average particle diameter D by a dry method is 1.5 .mu.m, ethanol, and ammonia water are stirred and maintained at 50.degree. to 55.degree. C. A mixed solution of ethyl silicate and ethanol as well as ammonia water are separately dropped into the mixed solution containing the phosphor particles (P45). After standing still, the supernatant liquid is removed by decantation, and the precipitates are dehydrated, and dried by heating, and sieved to obtain white phosphors (P45) whose surfaces are coated with silicon dioxide. Such phosphors satisfy 1D.ltoreq.d.ltoreq.1.3D, in which "D" represents an average particle diameter measured by a dry method, and "d" represents an average particle diameter measured by a wet method. Therefore, the phosphors have excellent dispersion property in a suspension.

Abstract: A method and apparatus for forming a phosphor layer of a projection CCRT utilizes a sedimentation, in which phosphor particles forming a suspension are consistently precipitated and dried over the inner surface of a panel regardless of the particle sizes resulting in decreased porosity of the phosphor layer to improve brightness and resolution while reducing a working manufacturing time.

Abstract: A method of forming a phosphor layer of a fluorescent screen of a CRT, having a good screen quality by properly managing the dissolution of a water glass and barium acetate occurring in a covering water step and improve the uniformity. A phosphor layer is formed on an inner surface of a panel portion of a glass bulb by a precipitation process and a lacquer intermediate film is formed on the phosphor layer in a state where the phosphor layer is moistened by covering water. An electrolyte remaining in the phosphor layer after the phosphor layer is moistened by the covering water has a conductivity of 6.0.+-.4.0 .mu.s/cm in 200 ml of pure water of 20.degree. C..+-.1.degree. C.

Abstract: A phosphor screen with a smooth-surfaced phosphor layer is formed by casting a phosphor layer in liquid form on a sheet to which the layer adheres without bonding. The exposed surface of the layer is then solidified and bonded to a permanent substrate. The sheet on which the phosphor has been cast is then removed, leaving a smooth exposed surface, which may then be covered with a transparent protective layer.

Abstract: A method of manufacturing an output phosphor screen for x-ray image intensifier is disclosed. The method includes the steps of dropping a dispersion of infusible spherical silicon resin particles on a water surface to form an aggregate layer of the infusible spherical silicon resin particles on the water surface. Thereafter, the aggregate layer of infusible spherical silicon resin particles in adhered on a face plate. The adhered aggregate layer is the calcinated in an atmosphere containing oxygen at a temperature of not less than 500.degree. C. to change the aggregate layer of infusible spherical silicone resin particles into a layer of spherical silica particles. A phosphor layer is then formed on the spherical silica particle layer.

Abstract: A red pigment coated phosphor comprises a phosphor for color cathode ray tube and red pigment attached to said phosphor by an organic binder, wherein said organic binder is gellatin and casein. A process for preparation of a red pigment coated phosphor comprises the steps of: preparing three dispersions of red phosphor particles, red pigment particles and organic binder, respectively; uniformly mixing said three dispersions and agitating them sufficiently; adjusting pH of the mixture obtained; and adding a curing agent thereto, washing said mixture and then drying it. The red pigment coated phosphor of the present invention has a good dispersion and a good affinity for phosphor slurry.

Abstract: A process is described for the formation of an undercoat which is in turn useful in forming a CRT metal back layer. According to the process, a pretreatment composition is coated on a glass panel having a fluorescent layer overlaid thereon, so that a water film is formed. The pretreatment composition is composed of 2-20 wt. % of an alkyl monoalcohol having a C.sub.1-3 alkyl group, 0.05-1 wt. % of a water-soluble, high molecular compound and 79-97.95 wt. % of water. An undercoating composition is then coated on the water film by a wet-on-wet coating method, whereby a coating layer is formed. The undercoating composition is composed of 1-7 parts by weight of an acrylic resin, which has been obtained by polymerizing 90-100 wt. % of an alkyl methacrylate having a C.sub.1-4 alkyl group other than tertbutyl methacrylate and 0-10 wt. % of an ethylenically unsaturated monomer copolymerizable therewith, and 99-93 parts by weight of a solvent containing at least 80 wt. % of toluene.

Abstract: Phosphor coatings for use in mercury discharge tubes and glass plates for illuminated signboards are provided by applying phosphor particles to a surface by means of a binder. The phosphor and an inorganic binder are suspended in a volatile fluid. The suspension is used to coat the surface. Evaporation at a temperature not exceeding 175.degree. C. is used to remove the volatile fluid.

Abstract: There is provided a process for treating the surface of a fluorescent material comprising the steps of adding a suitable amount of water glass (K.sub.2 O.SiO.sub.2) to a dispersion of a fluorescent material, the mixture of the dispersion and water glass being stirred, adding silica particulates to the mixture, and finally adding a suitable amount of metal salt to the mixture containing the silica particulates, whereby the silica particulates adhere to the surface of the fluorescent material.

Abstract: A high-quality projection cathode ray tube is for projecting the image, displayed on a fluorescent surface, as an enlarged image on a screen in front of the fluorescent surface through a projection lens disposed at a given distance ahead. On the inner surface of a face panel, a multilayer optical interference film including optical thin film layers of alternately superimposed high refractive and low refracte index material is provided. The outermost surface of the multilayer optical interference film is coated with a film of an inorganic material such as silicon dioxide which is optically transparent and stable with respect to the impact of an electron beam. The thickness of the transparent film is not less than 1.0 .mu.m. Even an electron beam having a high energy which has passed through the gaps of the phosphor layer loses the energy in this protective film.

Abstract: A method of forming a fluorescent screen for a plasma display panel provided with a front plate and a rear plate disposed parallel to each other and a cell barrier mounted on the front or rear plate and constituting a plurality of cells as display elements is characterized in that the cell barrier is located on a surface of the front or rear plate facing the other plate, a slurry solution containing a phosphor is filled in a portion defined by a cell wall of the cell barrier on the front or rear plate, only the wall surface of the cell barrier is exposed, and so a photosensitive layer containing a phosphor is formed at a portion inside the cell barrier. The fluorescent screen forming method is further characterized in another aspect in that a slurry solution containing a phosphor fills inside the cell of the cell barrier disposed on the plate, the plate is inclined immediately thereafter with an inclination of about 90.degree.

Abstract: A method of manufacturing a phosphor screen of a cathode ray tube having processes of forming a phosphor material on an inner surface of a cathode ray tube, forming a first intermediate film on the phosphor material, forming a second intermediate film having a baking temperature different from that of the first intermediate film on an upper surface of the first intermediate film, forming a metal back layer on an upper surface of the second intermediate layer, and baking a product at a predetermined baking temperature. Also, a method of manufacturing a phosphor screen of a cathode ray tube is disclosed, which has processes of forming a phosphor material on an inner surface of a cathode ray tube, forming an organic acid film on the phosphor material, forming an intermediate film on an upper surface of the organic acid film, forming a metal back layer on an upper surface of the intermediate layer, and baking a product at a predetermined baking temperature.

Abstract: A superconducting ceramic powder of Bi/Sr/Ca/Cu/O system are formed in a film and the c-axes are uniformly aligned with the normal of the film. The alignment of the axes is accomplished by dripping ethylalcohol containing the ceramic powder into ethyl alcohol contained in a reservoir. The ceramic powder is settled on a substrate arranged in the reservoir in film form. After removing ethylalcohol, the ceramic film is fired.

Abstract: According to the present invention, there is provided a method for forming a color tube phosphor screen comprising the steps of forming a light-absorbing matrix having holes on a faceplate, coating a silica colloidal solution or an alumina colloidal solution containing a multivalent metal ion in said holes and washing said holes, and forming phosphor layers of three colors in said washed holes. The color tube phosphor screen formed through the method of the present invention has no phosphor residual, especially pigment residual.

Abstract: A phosphor screen for a cathode ray tube employing an interference filter for projection television is produced by temporarily sealing the face panel and funnel of the tube toegether, forming the screen by a settling technique, and then separating the screened panel and funnel to allow access to the panel for further processing prior to permanently sealing the panel and funnel together.

Abstract: A method for preventing the hydration/solubilization of the protective oxide coating of a phosphor is described. The method involves coating of the oxide coated phosphor particles with a continuous hydrophobic coating. After the phosphor particles are coated with the continuous hydrophobic coating and the continuous hydrophobic coating cured, they are added to a water-based suspension and subsequently processed into a lamp.

Abstract: Making method for a phosphor layer of a small diameter cathode ray tube comprises application of a centrifugal force of above 100G in a direction parallel to the axis of a glass bulb toward its bottom panel to become a face plate, thereby forcedly making sedimentation of phosphor powder onto the inner surface of the bottom panel, and thus, by adoptation of the centrifugal force, a phosphor layer of very fine and dense configuration and uniform thickness is obtainable even using such small medium grain size of phosphor powder of under 4 .mu.m.

Abstract: A photosensitive film on a glass surface is prepared by: dispensing a quantity of aqueous emulsion containing the film constituents on the surface, distributing the emulsion as a layer over the surface, leveling the distributed layer and then drying the layer. To burst any bubbles that form during distribution, and to remove residual effects of the bubbles, a mist of a surface-tension-reducing liquid, such as methyl alcohol, is contacted with the distributed layer during leveling.

Abstract: The present invention is to positively provide a light pen pick-up phosphor pattern by the application of an inverting method and the selection of its slurry composition. That is, this invention relates to a method for producing a phosphor screen of a cathode ray tube which comprises the steps of forming a photo-sensitive material layer with a predetermined pattern on the inner surface of a cathode ray tube panel, coating on the whole surface of the panel including the photo-sensitive material layer with a phosphor slurry for use in light pen pick-up and removing the photo-sensitive material layer to thereby form a light pen pick-up phosphor pattern which is an inverted pattern of the former pattern.

Abstract: On the internal face of the frontal panel forming a color television tube, in order to obtain a cathodoluminescent screen, phosphors are deposited. A layer of aluminum must be deposited on the phosphors. An intermediate smoothening product, later decomposed, permits to obtain a layer of a satisfactory quality. A layer of ammonium tetraborate, forming microcrystals, is deposited on the product, piercing the aluminum layer so as to help the discharge of gases resulting from the decomposition of the intermediary layer.

Abstract: A method of forming a luminescent layer on a glass carrier (such as the wall of a discharge vessel of a low-pressure mercury vapor discharge lamp) from a suspension of grains of a luminescent material and a quantity of binder in a suspension medium. According to the invention, the suspension medium preferably consists of water and the binder mainly comprises fibrous crystals of boehmite.

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 improved X-ray image converter is disclosed which utilizes a phosphor layer of plate-like rare earth oxyhalide phosphor crystals having said phosphor crystals physically aligned to improve light emission from the phosphor layer. More particularly, said phosphor layer is formed with the plate-like crystals being aligned generally parallel to the longitudinal axis of said phosphor layer at both surface regions while the intermediate phosphor crystals are aligned generally perpendicular to said longitudinal axis. Said improvement can be provided during formation of phosphor layer from a liquid suspension by introducing particular velocity gradients in the flow pattern of said liquid suspension.

Abstract: A phosphor screen good in quality without greatly lowering brightness can be produced on a cathode-ray tube faceplate by the settling process wherein there is used a suspension of phosphor particles which are susceptible to hydrolysis or dissolution prepared by using an alkaline aqueous solution having a pH of 10 to 13 and if necessary with a small amount of water glass, or the above-mentioned phosphor suspension is poured into a cushion solution having a pH of 10 to 13, said cushion solution being able to contain a small amount of water glass.

Abstract: A process for the preparation of a radiographic intensifying screen comprising a support and a phosphor layer, which comprises:preparing a coating dispersion containing phosphor particles, a particulate hydrophobic silica in an amount of not more than 2% by weight of the phosphor particles, and a binder; andapplying the coating dispersion onto the support to form a phosphor layer.

Abstract: When fusing together a panel having a fluorescent film and a metallic reflective film, and a funnel with an electroconductive film in a baking furnace for manufacturing a cathode ray tube, oxygen containing air is forced into the furnace.

Abstract: A phosphor suspension is prepared by adding to an aqueous solution of a polyethylene oxide, a phosphor, a phosphate or a borate of an alkali metal and a phosphor bonding agent. After having passed through a filter, the phosphor suspension flows down on the inner surface of a glass bulb of a fluorescent lamp to form a phosphor layer thereon. The coated bulb is heated to a temperature which is not higher than its softening temperature while it is transported along two opposite guide rails by two endless conveyors by having both end portions supported by associated guide tips on the conveyors projecting above the guide rails.

Abstract: In forming a fluorescent screen for a cathode ray tube, an undercoat layer is first coated on the inner face of the panel. The undercoat layer contains at least polystyrene particles with a film weight of 0.002 to 0.04 mg/cm.sup.2. Coated on the undercoat layer is phosphor slurry.

Abstract: Methods for constructing radiation sensitive detectors are described. In one method, distinct layers of optical cement and plastics material are disposed between a semiconductor photodiode and a layer of rare earth phosphor in order to permit the phosphor and the plastics material to be peeled from the optical cement without damaging the photodiode in the event of a problem arising with the deposition of the phosphor layer. The phosphor layer may be loaded with heavy metal such as lead or tin. In the event that an array of semiconductive photodiodes is used, with stopper channels between adjacent diodes, the plastics material is preferably provided with markings overlying the stopper channels so as to reduce optical cross-talk between adjacent detectors.

Abstract: To coat the inner surface of the viewing window of a faceplate panel for a cathode-ray tube, of the type having a peripheral sidewall or flange around the window, dispense onto the surface a quantity of slurry in excess of what is required for the desired coating, spread the dispersed slurry over the surface, wet the uncoated inner surface of the sidewall with an aqueous medium, pass the excess portion of the slurry over the wet sidewall surface for removal from the panel, and then remove particulate material from the inner sidewall surface.

Abstract: The screen comprises superimposed layers of phosphor crystals having fluorescences of different colors separated by an inert layer having a substantially uniform thickness. In one example, the layers are of green phosphor P1 (J.E.D.E.C.) (.lambda.=550 nm) and red phosphor yttrium vanadate activated with europium (.lambda.=610 nm), in a proportion of 3 to 4 mg/cm.sup.2 and 0.15 mg/cm.sup.2 respectively. The inert layer is silicon sesquioxide (Si.sub.2 O.sub.3), and has a thickness of 1.2 .mu.m. High luminances are obtained throughout the range of colors, for operating voltages ranging between 10 kV and 17 kV.

Abstract: Method comprises heating the viewing window of a cathode-ray tube to temperatures above 35.degree. C, dispensing from a storage container onto a surface of said window a quantity of slurry comprised of particulate material mixed with a liquid vehicle, the quantity of slurry being in excess of that required to coat said surface, spreading the quantity of slurry over the surface whereby the slurry is heated by the window, collecting the excess slurry from the surface and returning it to the storage container, and removing the heat transferred to the excess slurry from the window.

Abstract: A cathode ray tube (CRT) having a faceplate-deposited cathodochromic material, said CRT having electron beam write and erase. The erase beam is an electron beam focused to a size of approximately 0.010 inches at the image screen of the CRT and the intensity of the beam is about 10.sup.5 watts/in.sup.2.

Abstract: This disclosure depicts a process for forming on an inner viewing surface of a color cathode ray tube having a flangeless faceplate a coating of an aqueous slurry composed of a photosensitized organic binder and a suspension of phosphor particles. The process comprises applying an aqueous pre-wet to the inner surface of the faceplate and, while the surface is still wet, applying a phosphor slurry to the pre-wetted inner surface of the faceplate; and suffusing the slurry across the surface to form a coating thereof. As a result of the pre-wetting of the faceplate surface, the occurrence of radially oriented non-coated areas on the surface is eliminated and the phosphor sedimentation rate is enhanced.

Abstract: An aluminized luminescent viewing-screen structure for a cathode-ray tube includes a carbon particle layer in contact with the aluminum layer. The carbon-particle layer is substantially free from metal-ion-containing materials, particularly compounds of alkali and alkaline earth metals.A viewing-screen structure comprising a light-reflective aluminum metal layer having a carbon-particle layer thereon may be made by: (a) depositing on the metal layer a coating of organic, volatilizable, film-forming material, (b) depositing on the coated metal layer an over-coating of carbon particles that is substantially free from substances which, when incinerated, produce metal-ion-containing residues and (c) then baking the screen and support in air at about 400.degree. to 450.degree. C to remove organic and volatile matter.

Abstract: A photoconductive layer having superior characteristics is made by steps of suspending uniformly photoconductive particles in a viscous solution by stirring, pouring the stirred mixture of the photoconductive particles, binder and solvent on a substrate which is put horizontally at a bottom of a container, precipitating the photoconductive particles on the surface of the substrate so as to form a wet photoconductive layer, removing the clear solution on the wet photoconductive layer, drying the wet photoconductive layer and baking the dried photoconductive layer.

Abstract: A method of manufacturing an electrically conducting layer on an internal wall part of a cathode-ray tube wherein by the addition of an alkali or ammonium sulphate or nitrate to a suspension consisting of a conducting material and a binder, a suspension is obtained which, upon drying on the wall, provides a layer in which substantially no gas bubbles are formed during the firing of the tube.