人们力图克服传统的阴极射线管在厚度和体积方面的限制,研制了扁平型显象管。大规模集成电路的迅猛发展也推进了这种管子的发展进程。近年来应用先进科学技术改进了设计和结构,研制出了各种新型的扁平显象管,技术性能不断臻至完善,黑白扁平管已开始进入商品化生产,彩色扁平管也可望在近年内投放市场,扁平管是一种发展中的新型显示器件。日本索尼公司走在扁平管生产的前列。82年2月,它向市场投放了“FD一200”超薄型2英寸黑白电视机,其价格已低于国内同类屏幕尺寸的一般显象管。图1是这种电视机用扁平管的结构示意图,该管厚16.5毫米、宽55毫米、长133毫米,体积55厘米~3,水平偏转角58°,垂直偏转角10°,管颈为Φ13毫米通用系列。电子枪设置在荧光面的下方,并与之 People are trying to overcome the limitations of the traditional cathode ray tube in terms of thickness and volume, and have developed flat type picture tubes. The rapid development of large-scale integrated circuits has also promoted the development of this pipe. In recent years, the application of advanced science and technology to improve the design and structure, developed a variety of new flat picture tube, technical performance continues to improve, black and white flat tube has begun to enter commercial production, color flat tube is also expected in recent years On the market, flat tubes are a new type of display device under development. Japan's Sony Corporation in the forefront of flat tube production. In February 1982, it launched the “FD-200” ultra-thin 2-inch black-and-white TV set to the market at a price lower than the average picture tube of similar screen size in China. Figure 1 is a schematic view of the structure of a flat tube for a television set which has a thickness of 16.5 mm, a width of 55 mm, a length of 133 mm, a volume of 55 cm 3, a horizontal deflection angle of 58 °, a vertical deflection angle of 10 ° and a neck of Φ13 Mm universal series. Electron gun set in the bottom of the fluorescent screen, and with it