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 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.

Abstract: A getter device capable of being re-activated as required and arranged in a narrow space in an envelope. The getter is arranged in a layer-like manner in an envelope of an electronic element to provide, in the envelope, a film-like getter for keeping an interior of the envelope at a vacuum. Electrons emitted from an electron feed section are impinged on the getter to activate it. The getter activated adsorbs thereon gas in an envelope of an image display device.

Abstract: A radio control transmitter capable of preventing a pupil-side radio control transmitter from outputting a radio wave even when a pupil-side operator erroneously closes a power switch of the pupil-side radio control transmitter. The transmitter includes a radio-frequency circuit for modulating a stick operation signal encoded by an encoder and outputting it in the form of a radio wave and a power control section for discriminating which of an internal power supply and an external power supply feeds a power thereto and holding a result of the discrimination therein. The power control section also functions to control switches for feeding the encoder and radio-frequency circuit with a power depending on the discrimination result. A trainer switch is arranged so as to permit a signal to be selectively applied to the radio-frequency circuit 5 from the encoder or a trainer cable.

Abstract: A rotational drive control device for a variable sp drive motor capable of accomplishing radio transmission of a signal for VSD (Variable Speed Drive) rotational drive control of a variable speed drive motor arranged in a rotational drive system of any equipment to be controlled in a factory or the like according to a radio communication system. The variable speed drive motor is arranged on a controlled side.

Abstract: An airtight envelope for an FED capable of ensuring formation of a gap or internal space therein with high accuracy and preventing leakage thereof and a decrease in display area. An anode substrate having a phosphor-deposited display pattern formed thereon and a cathode substrate having an electron emission source formed thereon are sealed joined to each other using a sealing material, to thereby provide an airtight envelope for an FED. The substrates are provided at a portion thereof joined together with particulate or bar-like elements which are kept unmelted or substantially unsoftened. Also, spacers are arranged at positions in a gap between the anode substrate and the cathode substrate which do not interfere with a display by the FED.

Abstract: A field emission type display device capable of providing display with gradation and permitting the whole display device to be integrated with a display drive circuit section. Memory sections are arranged in correspondence to image cell sections, resulting in static display being accomplished. Also, Light emission of an anode is carried out depending on data held in the memory section, so that a luminous period is increased and adequate luminance is provided at a drive voltage substantially lower than that required for dynamic display. An FEC element is incorporated in each of the memory sections in correspondence to incorporation of an FEC element in each of the image cell sections, so that the image cell sections and memory sections may be concurrently manufactured during manufacturing of the FEC elements, to thereby significantly simplify manufacturing of display device.

Abstract: A drive device for a field emission cathode capable of driving an image display device at a high speed while preventing leakage luminescence. A plurality of gate electrodes and cathode electrodes which are arranged in a matrix-like manner are scanned to drive an image display device. A leading edge of a drive pulse for driving the cathode electrodes in turn is defined to be a precharge period, during which a precharge pulse of a level V.sub.CH which does not permit emission of electrodes from emitter arrays is added. During the precharge, the gate electrodes are subject to blanking by a blanking pulse. This results the cathode electrodes being driven, followed by precharging, so that the cathodes may be driven at an increased speed while preventing leakage luminescence.

Abstract: A method for manufacturing a display device is available that is capable of remarkably improving life characteristics of a display device. A display device placed in a chamber is evacuated to about 10.sup.-7 Torr. Then, reducing gas is introduced into the display device and held therein for several minutes, followed by evacuation of the display device to about 10.sup.-5 Torr. The reducing gas introducing and discharge steps are repeated several times. Thereafter, evacuation of the display device is carried out while keeping the chamber at about 300.degree. C., followed by sealing of the display device.

Abstract: A phosphor capable of exhibiting luminescence with high efficiency by excitation due to impingement of electrons accelerated under an anode voltage of hundreds volts to about 2 kV thereon and a method for preparing the same are disclosed. Mn is ion-implanted in ZnGa.sub.2 O.sub.4 which is a matrix crystal of the phosphor deposited on a substrate. Three kinds of implantation energy of 150 keV, 90 keV and 30 keV are selected and the ion implantation is effected three times in the order of the level of the implantation energy. A concentration of Mn is rendered substantially constant within a depth range between 100 angstrom and 1000 angstrom of a depth of 2000 angstrom or less in a luminous region of the phosphor. The ion implantation thus carried out three times permits the phosphor to exhibit increased luminous efficiency as compared with one-time ion implantation.

Abstract: A process for manufacturing a transparent conductive film wiring board capable of being practiced according to a dry procedure to simplify the manufacturing and reduce the manufacturing costs. First, a SiO.sub.2 layer is provided on a substrate and then a black ITO film is formed on the SiO.sub.2 layer. The black ITO film is subject to processing using laser emitted from an output horn, resulting in being cut into a predetermined wiring pattern. Metal evaporated by laser processing is sucked by a vacuum suction head. Then, the substrate is subject to calcination to oxidize and crystallize the black ITO film 3 of the wiring pattern to form a transparent ITO film of the wiring pattern.

Abstract: A radio control transmitter capable of selecting function modes of high frequency in use at a simple operation to highly improve the operating efficiency. A plurality of setting switches each are provided so as to exhibit two functions or the function of immediately calling a specified function mode and a normal setting function, which are changed over through a second switch.

Abstract: A display device capable of carrying out positionally proper display. The display device is so constructed that drive data are stored in an address of a storage section corresponding to a counting signal of each of counters to set an initial value of the counter at a preset section. Thus, even when horizontal and vertical synchronous signals, clock signal and display signal are different in timing, the preset value of each counter may be varied to adjust deviation of a display section, resulting in exhibiting adequate display.

Abstract: A radio control transmitter capable of permitting the functions of various function switches to be set as desired through only a simple switching operation without requiring replacement of a wiring. Operation switches and operation functions which are desired to be shifted are selected by selecting switches and data on two operation functions are replaced with each other through two data holding registers, resulting in replacing the functions of two function switches with each other.

Abstract: An electron emitting element capable of preventing pollution of the emitter due to absorption of gas thereon, to thereby ensure stable emission of electrons over a long period of time even in a low vacuum atmosphere. The electron emitting element is constructed so as to permit a part of electrons emitted from one of emitters to impinge on the other of the emitters being ready for emission to clean it.

Abstract: A display device capable of exhibiting sufficient luminescence using FECs as a plane electron source. The display device includes a substrate section or a cathode substrate and a display substrate section or an anode substrate. The substrate section includes TFT sections and FEC sections each connected to one electrode of each of the TFT sections. The display substrate section includes three anodes arranged in a manner to be divided from each other. On each of the anodes is deposited a phosphor layer. Both substrate sections are arranged opposite to each other through a vacuum atmosphere.

Abstract: An indirectly heated filamentary cathode capable of significantly reducing its resistance, uniformly emitting electrons therefrom and effectively elminating its insulation failure. In the filamentary cathode, a cathode substrate is constituted by a metal conductive layer of a cylindrical shape arranged so as to be contacted with and electrically insulating layer and a fine metal wire wound which are closely contacted together, so that an electron emitting layer may be deposited through the metal conductive layer on the electrically insulating layer.