近年以来,在上海火车站、虹口体育场、上海杂技场等处相继装置了一种新颖显示器——电子计算机大屏幕图象显示器。这种显示器采用电磁翻板显示器件作为显示屏的象素,与普通的白炽灯、霓虹灯以及其它发光元件相比,具有耗电省,不怕强光,屏幅拼组灵活等独特优点,能广泛应用在军事作战指挥、车站码头、机场、运动场、商业广告、生产调度等各个领域。电磁翻板显示器件类似电磁式继电器的工作原理。它由磁棒、线圈、导磁软磁铁片、翻板色片和塑料壳体等五个部件组成(见图1)。导磁软磁铁片把两根磁棒连结成“U”字型铁磁体。翻板色片的正反两个面 In recent years, Shanghai Railway Station, Hongkou Stadium, Shanghai acrobatics and other places have been equipped with a novel display - electronic computer large screen image display. This kind of display uses the electromagnetic flap display device as the pixel of the display screen. Compared with ordinary incandescent lamps, neon lights and other light-emitting elements, the display has the advantages of power consumption saving, not afraid of bright light and flexible panel assembling, and can be widely used Used in military operations command, station terminals, airports, stadiums, commercials, production scheduling and other fields. Electromagnetic flap display device similar to the working principle of electromagnetic relays. It consists of five parts: a magnet bar, a coil, a magnetically conductive magnet, a flap color plate and a plastic housing (see Figure 1). The magnetically conductive magnet piece connects the two magnet bars into a “U” shaped ferromagnet. Flip color film both positive and negative