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彩色电视的发展至今已有六十多年的历史了,一直到五十年代初,由于荫罩式彩色显像管的出现才完成了由机械式向电子式扫描的过渡。1951年,美国在国内试播全电子武彩色电视获得成功。当时采用的是RCA、GE和SYLVANIA三个公司制造的三枪三束、荫罩式、圆形屏、金属锥彩色显像管,这就是彩色显像管发展的起点。从1950年到1957年间,荫罩式彩色显像管得到了巨大的发展,同时做了许多根本性的改进。其中低熔点玻璃封接技术是最重要的改进之一,它开创了全玻璃结构的彩色显像管的新时代。这种利用结晶性低熔点焊料玻璃,将两件屏、锥封接到一起的方法,经
The development of color television has been more than sixty years old. Until the early 1950s, the transition from mechanical to electronic scanning was completed due to the appearance of shadow-mask color picture tubes. In 1951, the United States successfully piloted all-electric Wuchuan television in China. At that time, the three-shot, three-beam, shadow mask, circular screen and metal cone CRT made by RCA, GE and SYLVANIA were used as the starting point for the development of color picture tubes. From 1950 to 1957, shadow-mask color picture tubes were greatly expanded and many fundamental improvements were made at the same time. Among them, one of the most important improvements is the low melting point glass sealing technology, which opens up a new era of full-color CRTs. The use of crystalline low melting point solder glass, the two screens, cones sealed together by the method of