大约自1930年,当阴极射线管从气体聚焦管发展为高真空器件时就成为电视的主要显示器件。通过改进设计和利用新材料,它也逐步变为用于许多其它方面的重要显示器件。本文把不同类型管的一些主要发展情况简述如下。 About 1930, cathode ray tubes became the primary display devices for television when they were developed from gas focusing tubes to high vacuum devices. By improving the design and utilization of new materials, it has also gradually become an important display device for many other applications. This article describes some of the major developments in different types of pipe as follows.