GLASS BULB FOR CATHODE-RAY TUBE

摘要

PROBLEM TO BE SOLVED: To prevent the occurrence of implosion even if the wall thickness of a glass bulb for a cathode-ray tube is thinned and lightened. SOLUTION: Compressive stressσKC in a panel portion 3 formed by physical reinforcement has a relationship with the breaking strengthσSG and the maximum valueσVTmax of the tensile stress of a bulb 2 as follows. 1 . The thickness t1 at the center of a face portion has a relationship, 0.64<=(t1 /t0 )<2> <1 against the thickness t0 atσVTmax =σSG/C.