METHOD OF COLD FORMING THE SHADIW MASK OF COLOUR IMAGE TUBE AND SHADOW MASK OBTAINED THEREBY

摘要

The present invention provides an improved color picture tube (8) having a viewing screen (22) and a shadow mask (24) mounted adjacent to the screen. The mask has an apertured contoured portion (26) and a peripheral skirt (30). The improvement comprises the skirt having a reverse bend therein, wherein a first portion of the skirt that connects with the apertured contoured portion extends away from the screen and a second portion of the skirt more remote from the apertured contoured portion extends towards the screen.