据 Cold Metal Paroducts Company,Inc 1988,报道荫罩是大部分彩色电视机上电视显象管的一个关键部件,它由薄钢带或箔组成,每张荫罩含有将近500000个被精确蚀刻的”孔洞”或“狭孔”(见照片),并被镶嵌在玻璃屏幕里。荫罩的功能是促进通过显象管中的电子枪去区分在玻璃屏幕上激发出的红、绿、蓝三色,并通过吸收残余的电子而产生电视图象。 According to Cold Metal Products Company, Inc., 1988, shadow masks are reported to be a key component of television picture tubes on most color television sets. They consist of thin strips of steel or foil, each containing nearly 500,000 accurately etched “ ”Or“ narrow hole ”(see photo), and was embedded in the glass screen. The function of the shadow mask is to facilitate the differentiation of the red, green and blue colors emanating from the glass screen through the electron gun in the picture tube and to produce a television image by absorbing the residual electrons.