Abstract: An electron gun and a CRT capable of accomplishing a reduction in spot diameter of electron beams, an increase in drive speed and control of luminance while being simplified in structure. Field emission cathodes acting as the electron source for the electron gun are arranged in the form of or divided into plurality of the small regions S for matrix driving, to thereby control luminance of the CRT depending on the number of small regions S selected. Thus, luminance control over any desired number of gradations which exhibits satisfactory resistance to noise and linearity can be realized while simplifying the structure, resulting in the field emission cathodes being highly conveniently applied to the electron gun of the CRT, leading to an improvement in functionality of the CRT.

Abstract: A field emission type fluorescent display device capable of exhibiting high luminescence under a low voltage while minimizing leakage luminescence and color mixing, to thereby improve display quality. An anode and a field emission cathode are arranged opposite to each other and the cathode is divided into a plurality of unit regions in a matrix-like configuration, which are matrix-driven, resulting in a display being selectively carried out. The unit regions each are divided into a plurality of subregions and the cathode and anode are divided into a plurality of strip-like electrodes perpendicular to each other, respectively. The strip-like electrodes each correspond to each of subregions and are commonly connected to each other at every second interval. Also, a focusing electrode may be arranged between the gate and the anode so as to surround the unit regions.

Abstract: A field emission type electron source capable of permitting a resistance value between a cathode wiring and each of emitter cones to be set at substantially the same level and increasing packaging density of the emitter cones. The electron source includes stripe-like cathode wirings arranged on an insulating substrate. The cathode wirings each are formed with a plurality of windows, so that a plurality of island-like cathode conductors and resistance layers different in resistance value from each other are formed separate from the cathode wiring. Then, a resistance layer, an insulating layer and a gate electrode are formed thereon. The gate electrode and insulating layer are formed with apertures in a manner to be common to both, in which the emitter cones are arranged, resulting in emission of electrons from the emitter cones of each group unit being rendered uniform.

Abstract: To decrease the number of a cathode power source for operating a portion between the cathode and the gate, a structure is employed in which three gate lines for red, green and blue filters are provided, the filter being arranged such that the red optical filter has a lowest radiant efficiency, the blue optical filter has a secondly low radiant efficiency and the green optical filter has a highest radiant efficiency. In inverse proportion to the radiant efficiencies, the numbers of emitters in field-emission arrays formed in the three gate lines are determined.

Abstract: A radio control device includes a transmitter, in which a crystal type high frequency module equipped with a high frequency circuit corresponding to a frequency band of a carrier and a PLL high frequency module equipped with the high frequency circuit and a PLL circuit for controlling a frequency of the carrier depending on a phase difference between the carrier and a reference signal of oscillator are detachably mounted. Such construction permits the crystal type high frequency module and PLL high frequency module to be selectively used as desired and transmission data to be output by means of the carrier of a desired frequency set depending on the high frequency module.

Abstract: Odd-order patch-like gate electrodes are, by gate lead lines, connected to a first electrode, even-order patch-like gate electrodes are, by gate lead lines, connected to a second gate electrode. The first and second gate electrodes are selectively and alternately operated. By making the potential of gate electrodes, which are not being selected, to be a low level, the patch-like gate electrodes, which are being operated, can be surrounded by low-level conductors. Thus, electrons emitted from the patch-like gate electrodes can be converged.

Abstract: A fluorescent display tube has high visibility because reflection of Al of an anode conductor is prevented. A black film 3 formed on the inner surface of a substrate 2 is formed such that an inorganic metal containing compound is changed into a metal oxide by heat treatment, and consists of a TaO.sub.2 --, Tl.sub.2 O--, SnO--, or (Mn, Cu)--based oxide. An SiO.sub.2 film 4 serving as an alkali-shielding film is formed on the inner surface of the substrate 2 to cover the black film 3. An anode conductor 5 consisting of Al is formed on the SiO.sub.2 film 4. The anode conductor 5 is constituted of a frame member 6 and a stripe-shaped display unit 7 with transparency. The frame member 6 is behind the black film. The display unit 7 is partitioned by the inner edge of the gap between the black films 3. A phosphor layer 8 is formed on the display unit 7. A cross layer 9 is formed to cover the SiO.sub.2 film 4.

Abstract: A trim unit having a simple structure is provided which has an arrangement such that an automatic repeating function is activated when a trim switch is depressed continuously. If a determination is performed in step S40 that count value CNT (1) of a first counter is larger than N3, then the value of CNT (1) is set to N2+CNT (2) so that count value CNT (2) of a second counter is increased. Then, the trimming position is moved by one step in step S80. If the trim switch is continuously depressed, the interval for the count value CNT (1) to be larger than N3 in shortened in accordance with the count value CNT (2). Thus, the repeating speed for the trimming position to be moved is raised so that the trimming position is quickly adjusted.

Abstract: A phosphor heat-treating method and an apparatus therefor capable of providing a phosphor exhibiting improved crystallizability and increased in concentration of a luminous center therein. A phosphor is heated and rapidly cooled in atmosphere gas of a predetermined pressure. The pressure substantially restrains decomposition and scattering of the phosphor during heating and cooling of the phosphor.

Abstract: A display device capable of simplifying connection between a drive circuit and lead-out wirings led out of electrodes and being small-sized while keeping a size of an image plane from being reduced. A part of supports for holding an anode substrate and a cathode substrate spaced from each other at a predetermined interval is formed so to be conductive and is interposedly arranged between the anode electrode and a lead-out wiring formed on the cathode substrate, to thereby provide an anode lead-out wiring on the cathode substrate. Such construction permits the anode lead-out electrode to be arranged so as to extend in the same direction as a cathode lead-out electrode or a gate lead-out electrode, to thereby facilitate connection of the wirings. Also, the anode substrate can be decreased in size because a region for the anode lead-out wiring is eliminated.

Abstract: A phosphorescent material has an excellent life time characteristic when it is applied to display device such as a fluorescent display device and includes a body portion composed of alkali metal and an oxide, and a protective coat formed over a surface of the body portion. The protective coat is composed of an oxide containing at least one element selected from the group consisting of Al, Ti, Si, Zn, Sn, Bi, Sb, Ce, Y, Ta, Gd, Ru and Ga.

Abstract: An image display device including a field emission element capable of preventing diffusion of electrons to be impinged on a display section. An anode substrate is provided thereon with a phosphor-deposited display section and a cathode substrate is provided thereon with field emission elements including cathode conductors, emitter electrodes and gate electrodes. The cathode conductors and gate electrodes are formed into a stripe-like shape and arranged so as to intersect each other to form a matrix. A stripe-like diffusion prevention electrode is arranged between each adjacent two of the gate electrodes. The emitter electrodes selected by the gate electrodes and cathode conductors emit electrons. The diffusion prevention electrodes on both sides of each of the gate electrodes selected are applied thereto a voltage lower than a voltage of the gate electrodes, so that the electrons may be impinged on the display section required without diffusion, to thereby permit picture cells required to emit light.

Abstract: Electron excited luminous element capable of ensuring satisfactory emission characteristics of emitters for an extended period of time. A hydrophobic insulating film is formed on a glass anode substrate so as to cover an exposed portion thereof between anode electrodes. This keeps the glass anode substrate from being directly attacked by electrons, to thereby prevent decomposition of water and the like contained in a surface of the glass, resulting in oxygen which causes deterioration in emission characteristics of emitter cones being kept from being released from the glass.

Abstract: A method for controlling an engine for a model and a device therefor capable of improving throttle response. Feed of fuel to the engine is increased during acceleration of the engine and decreased during deceleration thereof. This permits a rotational speed of the engine to be smoothly and rapidly varied, to thereby reduce vibration of the engine and prevent knocking and breathing of the engine. Also, adjustment of a trim provided on a side of a controller leads to adjustment of a needle valve, so that the adjustment may be facilitated.

Abstract: A radio-frequency module detachably mounted to a transmitter in a radio-control apparatus to supply a high frequency signal to a transmitter. The module includes a phase-lock loop (PLL) circuit along with low pass filters and a voltage controlled oscillator to form a PLL oscillator loop. A rotary switch which is manually set provides an indication to a microprocessor of the desired frequency. The microprocessor supplies the PLL circuit with frequency data. An error voltage is generated by the low pass filters.

Abstract: A fluorescent display device including a cathode filament increased in mechanical strength and reduced in end cool. A 26% Re-W filament of 0.64 MG (corresponding to 0.64 mg in weight per 20 cm in length) exhibits an end cool as small as 4.2 mm on each of both sides thereof at a temperature of about 580.degree. C. The end cool in a conventional W filament of the same diameter is increased to about 8 mm. The 26% Re-W filament is increased in mechanical strength by 50% as compared with the conventional W filament.

Abstract: A fluorescent display device capable of setting anode patterns as desired without being restricted by a configuration of grids. A plurality of grids formed into the same rectangular shape are juxtaposed to each other at micro intervals. First single anode patterns each are arranged so as to face each of grid groups each consisting of four to six single grids adjacent to each other. Second single anode patterns each are arranged so as to face each one single grids. The second single anode patterns are driven for every grid and then the grid groups facing the first single anode patterns are selected. Concurrently, the anode patterns facing the grid groups are fed with a display signal. Thus, the grid is commonly applied to any fluorescent display device and accommodates to any anode pattern.

Abstract: A conductive paste capable of effectively preventing current interruption in through-holes of a fluorescent display device. An anode substrate having Al film wirings formed thereon is laminatedly provided thereon with an insulating layer, which is then formed thereon with an anode conductor and phosphor layers in turn, leading to an anode. The insulating layer is formed with through-holes, in which the conductive paste is filled to make electrical connection between the wirings and the anode conductors. The conductive paste is formed of a mixture of Ag, glass and a vehicle, and Zn and/or Sb added to the mixture, wherein Zn and/or Sb are added to the mixture in an amount of 1 to 40 wt. % based on Ag. Zn and/or Sb serve as a catalyst for promoting alloying between Ag contained therein and Al, resulting in providing electrical connection therebetween with highly increased stability.