摘要:
An envelope includes a first substrate having an image display surface, and a second substrate opposing the first substrate with a space therebetween. Electron sources for activating the image display surface are arranged on the second substrate at a predetermined pixel pitch in an X-direction and a Y-direction perpendicular to each other. Spacers are provided between the first and second substrates. The spacers are arranged at several times the pixel pitch in the X-direction, and arranged in the Y-direction at the same pitch as the pixel pitch at least in a part of the image display surface, those of the spacers arranged in the Y-direction being arranged in line with the electron sources and being located at both sides of each of the corresponding electron sources to make an electron emitted from each of the corresponding electron sources pass between each adjacent pair of those spacers.
摘要:
An electronic apparatus comprising a control unit including at least a CPU, a RAM, and an I/O port; and a ROM for storing a control program executed by the CPU, further includes a power supply circuit for supplying power to each device thereof and a switching circuit for turning on/off the power supplied from the power supply circuit to the ROM, and transfers the control program stored in the ROM to the RAM according to power-off direction, lets a switching circuit turn off the power supply to devices other than the control unit after the transfer, and then lets the CPU execute the control program stored in the RAM while the power supply to the control unit is maintained, thereby executing processings for, for example, calibrating a head temperature sensor, lowering the clock frequency of the control unit or the like.
摘要:
A color cathode ray tube and an envelope for use with the color cathode ray tube in which a metal plate is interposed between a panel section and a plurality of funnel and neck sections, each of which combination having one electron gun disposed internally. The overall length of the envelope thus constructed can thus be shortened in the direction of the tube axis. The structure of the envelope can also be more simply made and ease of production provided. Further, the envelope can be made lighter in weight.
摘要:
A color cathode ray tube includes a screen, a shadow mask and an electron gun section. The electron gun section comprises a plurality of separate unit electron guns. The screen is divided into a plurality of subregions each of which is scanned by an individual unit electron gun. Each unit electron gun emits a single electron beam and is associated with an individual main deflection device for causing the beam to scan the electron gun's particular subregion of the screen and subsidiary deflection means for effecting electron beam color switching.
摘要:
Electron tube having an evacuated envelope equipped with an electron emitting cathode, wherein a layer of activated silicon oxide is formed inside the envelope. The activated silicon oxide layer improves the emission life.
摘要:
In a color cathode ray tube, a vacuum envelope is provided with a plurality of necks and a plurality of funnels for coupling the respective neck to a single panel. A plurality of electron gun assemblies are received in the neck, respectively and a plurality of deflection yokes are mounted around the funnels, respectively. A screen is formed on the inner surface of the faceplate of the panel and is defined by a plurality of continuous segment regions each of which is scanned with electron beams from the corresponding electron gun assembly and deflected by corresponding deflection yoke. A shadow mask is received in the panel and is faced to the screen. The shadow mask has a plurality of effective row and column regions corresponding to the segment regions and a noneffective region for surrounding and partitioning the respective segment regions.
摘要:
A glass envelope for a cathode-ray tube with a glass panel section which has a faceplate of substantially rectangular shape with long and short sides, the faceplate having inner and outer surfaces. Radii of curvature of the inner and outer surfaces are established so that:(Rso-Rsi)>(Rlo-Rli)andti (Rso-Rsi)>(Rdo-Rdi),where Rsi, Rli, Rdi and Rso, Rlo, Rdo are inner and outer surface radii, respectively, for the lateral axis, the longitudinal axis and the diagonal axis of the faceplate, respectively.
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:
The preparation of an oxidation catalyst is described, represented by the following general formula:Ni.sub.a Co.sub.b Fe.sub.c Bi.sub.d L.sub.e M.sub.h Mo.sub.f O.sub.g ;in which L is phosphorous, arsenic or boron and M is potassium, rubidium or cesium; and wherein a and b have a value of from 0 to 15, a + b being 2 to 15, c is 0.5 to 7, d is 0.1 to 4, e is 0 to 4, f is 12, g is 35 to 85 and h is 0.01 to 0.5. The oxidation catalyst is useful in a process to produce acrolein by oxidizing propylene in vapor phase.
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.