摘要:
A cathode ray tube electron gun having an electron beam-generating source and a main lens system for focusing electron beams emitted from said electron beam-generating source, wherein the main lens system comprises at least first, second, third and fourth focusing electrodes arranged coaxially and in the order mentioned an counted from said electron beam-generating source; the first and third focusing electrodes are impressed with substantially the same potential; and the fourth focusing electrode is supplied with a prescribed potential higher than those which are applied to said first and third focusing electrodes.
摘要:
An electron gun comprises cathodes for emitting three electron beams, and grid electrodes forming at least two asymmetric electrostatic lenses along three electron gun axes. The lenses focus and deflect the electron beams to converge on a color cathode ray tube screen. The first asymmetric lens, in response to the focus voltage being varied, deflects the beam at a first angle and the second asymmetric lens deflects the beam at a second angle to compensate for the first angle deflection caused by the first asymmetric lens.
摘要:
A beam index color cathode ray tube is provided with a screen arranged on the inner surface of a face plate portion and an electron gun arranged in a neck portion thereof. This screen comprises phosphor stripes and index stripes. The electron gun comprises at least a cathode and two electrodes forming a focusing lens. The focusing lens of the electron gun is formed between at least two electrodes provided with transversely elongate openings having their direction of elongation in the width direction of the phosphor stripes or index stripes.
摘要:
A mask-focusing color picture tube comprising an evacuated envelope; means to generate a number of electron beams; a display screen comprising a large number of phosphor stripes luminescing in different colors; a plurality of masks being spaced in the predetermined distance each other, individually having a number of apertures which is arranged in rows and being disposed in the vicinity of said screen, each electron beam being assigned to phosphor stripe of a respective color through said corresponding mask aperture, the improvement comprising, at least one of said plurality of masks having a plurality of projections on at least one side of said mask, said projections being separated each other by the rows of said apertures.
摘要:
A beam-index tube apparatus comprising a beam-index picture tube provided with an electron gun to generate an electron beam of an oval cross-section, a deflecting device having a deflecting yoke for deflecting the electron beam, and correcting elements provided in the proximity of a front end of the deflecting yoke and positioned corresponding to the horizontal axis and the diagonal axes of the picture tube. The correcting elements act upon the electron beam in a manner such that the rotating of the diagonally deflected electron beam and widening of the horizontally deflected electron beam are thereby corrected.
摘要:
In a method of a manufacturing flat display apparatuses by working flat substrates, a flat substrate is prepared having a first region which is used as a flat display apparatus and a second region outside the first region. After the first region is worked as desired, the second region is cut and separated from the flat substrate.
摘要:
An image display device comprises a first substrate which has a phosphor surface, and a second substrate which is opposed to the first substrate with a gap and has a plurality of electron sources. A plurality of spacers are arranged between the first substrate and the second substrate and support an atmospheric load acting on the first and second substrates. Each of the spacers has distal end portions at the first and second substrates, respectively. The distal end portions of each spacer are impregnated with electrically conductive material and constitute conductivity-imparting portions.
摘要:
On a faceplate having a phosphor layer and a metal back that are formed on a substrate, in a vacuum atmosphere, for instance an active Ba film is deposited as a getter film. Following this, while maintaining the vacuum atmosphere, the faceplate thereon the getter film is deposited and a rear plate having a plurality of electron emitters formed on a substrate are oppositely disposed to form a gap therebetween through a support frame, the gap being hermetically sealed. A flat panel display comprises the active Ba film formed on for instance the metal back as a getter film. Such getter film, while maintaining an activity, is disposed on an image display region in a vacuum vessel, having an excellent getter function.
摘要:
An image display device comprises a first substrate which has a phosphor surface, and a second substrate which is opposed to the first substrate with a gap and has a plurality of electron sources. A plurality of spacers are arranged between the first substrate and the second substrate and support an atmospheric load acting on the first and second substrates. Each of the spacers has distal end portions at the first and second substrates, respectively. The distal end portions of each spacer are impregnated with electrically conductive material and constitute conductivity-imparting portions.
摘要:
A spacer assembly has first and second spacers standing on first and second surfaces of a plate-like grid to be integral with them. First and second molds each with a plurality of through holes are arranged on the first and second surfaces of the grid to be in tight contact with them. After that, the through holes of the molds are filled with a glass paste containing an ultraviolet-curing binder, and the glass paste is cured by irradiation with ultraviolet rays. Furthermore, while the molds are held in a tight contact state, the glass paste is calcined at a predetermined temperature. Thus, the first and second spacers are integrally formed on the grid surfaces.