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 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:
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.
摘要:
A color cathode ray tube with a shadow mask has a screen partitioned into a plurality of elemental screen areas and electron guns positioned and corresponding to the respecting elemental screen areas, the electron guns generating electron beams to scan the screen. The shadow mask includes effective regions having a number of apertures passed through by the electron beams to impinge on the screen and a non-effective region adjacent to the effective regions. Phosphors as a signal source are deposited on the non-effective regions or the boundaries between the elemental screen areas to emit a light signal by electron beam excitation. A photo-electric transducer is provided facing the shadow mask and to detect the light signal for feed back to a deflection system to control the electron beam deflection.
摘要:
An image recording apparatus includes a frame memory for storing image information, a recording light source, a light modulator activated by the image signal stored in the frame memory for modulating a light emitted from the recording light source in a recording mode, a light scanning device, and a light shut-off device separate from the light modulator for shutting off the light emitted from the recording light source in a non-recording mode.
摘要:
A flat display device comprises a vacuum envelope constituted by a back base plate consisting of an elastic metal plate and a display panel and accommodating a thermionic cathode structure and a plurality of electrode structures for controlling the electron beams emitted from the thermionic cathode structure. The thermionic cathode structure is divided into a plurality of sections each including a plurality of coiled thermionic cathode heaters connected in parallel and arranged such that each corresponds to each of picture element regions provided on the back side of the display panel. Voltage supply terminals for supplying power to the parallel coiled heaters in each section are led out through the back base plate via insulating members.