一、概述对荫罩式彩色显像管(以下简称CPT)来说,最重要的问题就是制作工艺必须很好地保证管子的色纯。因此,CPT荧光面的制作工艺大多采用光学曝光法。光学曝光法是一种照像与刻蚀的综合技术。其目的就是在被 First, an overview of shadow mask color picture tube (hereinafter referred to as CPT), the most important issue is the production process must be well to ensure that the color purity of the tube. Therefore, most of CPT fluorescent surface production process using optical exposure method. Optical exposure method is a combination of imaging and etching technology. Its purpose is to be