EXPOSURE METHOD IN COLOR CATHODE RAY TUBE

摘要

PURPOSE: An exposure method in a color cathode ray tube is provided to perform an exposure process without a spot on a screen by removing a fundamental problem of shaking in an exposure method. CONSTITUTION: An exposure method in a color cathode ray tube comprises the following steps. A segment lens is shaken from a center point of a face plate(2) to a direction of an X-Y axis. In the shaking process of the segment lens, an amplitude of the X-axis and an amplitude of a Y-axis are not set up more than a size of one cell of the segment lens. A speed ratio between the X-axis and the Y-axis of the shaking is represented as 1: 1.xx when the segment lens is shaken from the center of the face plate(2) to the direction of the X-Y axis.