引言 10年后,在电视、计算机和信息显示设备中,阴极射线管仍然是主要的显示器件。近来它的有利地位虽受到各种固体、真空、气体等显示器件的挑战,但是在低成本、长寿命、易制造、显示质量、可读性、电路简单、使用方便、选址容易、显示面积大、分 Introduction Ten years later, cathode ray tubes remained the dominant display device in television, computer and information display equipment. Recently, its advantageous position has been challenged by various display devices such as solid, vacuum and gas, but it has the advantages of low cost, long life, easy manufacture, display quality, readability, simple circuit, easy to use, easy site selection and display area Big, minute