荧光屏幕上常会产生异色点,异色点大体有两种类型:一种是在通常情况下就能辨认的机械杂点或因荧光粉层孔穴引起的暗点。这类色点产生的原因比较清楚,解决起来也较有把握;另一种色点必须在荧光屏工作时才能辨认,它是指荧光屏在激发状态下区别于原来颜色的发光色点,异色由原来的颜色蜕变而成。这类异色点研究尚少,生产中时会出现,威胁较大。本文对这类异色点的特征、生产原因及其消除途径作一简介。直视真空器件易产生异色点的有:彩色显 Fluorescent screen often produce different color point, heterochromic point there are two general types: one is usually recognized as mechanical impurities or dark spots caused by phosphor layer hole. This kind of color point is more clear reason to solve more sure; the other color point must be visible when the screen work, it refers to the screen in the excited state is different from the original color of light-emitting color point, color from The original color from the metamorphosis. This kind of different color point research is still less, appear in the production, the greater the threat. This article gives a brief introduction of the characteristics of such heterochromatic points, their production reasons and ways to eliminate them. Direct vacuum devices are easy to produce different color points are: color was