摘要:
A method of forming a color picture tube fluorescent screen by so-called dry process. After a photosticky substance mainly containing a diazonium compound is coated on a panel inner face, phosphor is adhered to portions of the compound which have been exposed to light through a color selection electrode and rendered sticky, and surplus phosphor applied on unexposed portions of the compound is removed, the above steps being consecutively repeated for phosphors of three colors to form picture elements of triads of three color phosphors on the panel inner face. The panel inner face is then treated with an aqueous solution containing at least polymer coagulant.
摘要:
In a method of forming a fluorescent screen of a color picture tube by a dry process, the method comprises a first step of precoating an emulsion containing a powder of acryl resin on an inner surface of a face plate of the color picture tube to form a primary coating, a second step of coating on the primary coating a photosensitive composition consisting essentially of a diazonium salt to form a thin film, a third step of exposing to light a selected portion of the thin film to render the same to become adhesive, a fourth step of depositing a powder of a phosphor on the selected portion to form a phosphor layer of a first color and a fifth step of repeating the third and fourth steps to form phosphor layers of second and third colors.
摘要:
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.
摘要:
A high definition display apparatus having a wavelength selective absorption effect and an anti-static and anti-reflection effect is provided by thin films having a low resistance and a high refractive index. The high definition display apparatus has an anti-static and anti-reflection film composed of laminated oxide or metallic thin films, wherein at least three layers of oxide or metallic films having different reflectance from each other are laminated onto the front surf ace of the display apparatus, and the laminated films are composed such that an absorbing film containing coloring material is arranged under a high reflectance film as seen from the outer surface of the laminated films.
摘要:
In a phosphor screen of cathode ray tube produced by forming a lacquer film between phosphor layers and a metallic film, when the lacquer film is formed by using a composition comprising a resin component, an organic solvent and a plasticizer in an amount of about 12 to 60% by weight based on the weight of the resin component, the resulting phosphor screen is excellent in adhesive strength of the metallic film and can prevent color mixing and halation.
摘要:
For formation of a cathode-ray tube phosphor screen by causing a fluorescent material to adhere to a particle-accepting sticky surface formed uniformly on the inner surface of a face plate, phosphor particles are placed on the inner surface of the face plate and caused to slide physically over the particle-accepting sticky surface so as to be stuck thereto.
摘要:
An amphoteric surfactant is added to a photosensitive composition consisting essentially of an aromatic diazonium salt and used to prepare a fluorescent screen of a color picture tube.
摘要:
Disclosed herein is a phase-locked loop circuit including: a voltage controlled oscillator; a variable frequency divider circuit for frequency-dividing an oscillating signal of the voltage controlled oscillator into a 1/N (N is an integer) frequency; a phase comparator circuit for comparing phases of a frequency-divided signal and a reference signal of a reference frequency with each other; a charge pump circuit for outputting a charge pump current changed in pulse width; a loop filter for being supplied with the charge pump current and outputting a direct-current voltage changed in level; and a control circuit for calculating a value of the charge pump current as a function of the oscillating frequency of the voltage controlled oscillator and a coefficient for setting a phase locked loop band, and setting the value of the charge pump current in the charge pump circuit.
摘要:
A diagnostic and control system first checks the current operation status of the vehicle engine, when a malfunction or abnormal condition is detected by diagnostic sensors. A selection of optimum corrective measures is then made and carried out taking into account the safety of the vehicle, based on current operational status of the engine. For this purpose, a set of prioritized corrective measures is determined beforehand for each of the individual monitored items, according to detected changes in the engine operating status. The individual control measures are selected considering the safety of the vehicle, possible measures to correct the malfunction, assuring vehicle operability, and maintaining appropriate engine operating parameters such as exhaust gas mixture, fuel consumption and the like.
摘要:
A fluorescent screen of a black matrix type color picture tube is manufactured by forming a graphite film on an inner surface of a face plate, applying a photoresist film on the graphite film, exposing to light portions of the photoresist film where phosphor picture elements are to be formed subsequently, removing the exposed portions of the photoresist film to expose portions of the graphite film, removing the exposed portions of the graphite film to form a black matrix film having voids corresponding to the exposed portions of the graphite film, and thereafter depositing triads of phosphors of picture elements on the inner surface of the face plate through the voids. In a modification, a reflective film is interposed between the graphite film and the photoresist film and portions of the reflective film in register with portions of the photoresist film exposed to light are removed by etching.