A METHOD FOR THERMAL PROCESSING A CATHODE RAY TUBE

摘要

In a method for thermal processing a cathode ray tube, a glass mount containing an electron gun is sealed to a neck of a funnel. After sealing the mount containing the electron gun to the neck of the funnel, the funnel is sealed to a faceplate panel with a bead of frit to form an envelope by heating the funnel and the faceplate panel to a temperature of about 430-450 degrees Celsius. The envelope is then cooled to a set temperature of about 310-350 degrees Celsius. The envelope is then exhausted at a temperature of at least 310 degrees Celsius. The envelope is sealed to form the cathode ray tube.