Patent ID: 6922012
Filing Date: 2005-07-26
Classification: H01J

Abstract:
1. A cathode ray tube comprising: a vacuum envelope including an electron gun arranged in a neck of the funnel, for emitting electron beams onto the phosphor screen; and a reinforcing band attached round an outer surface of the panel, for fastening the skirt portion, the reinforcing band has a bent portion formed by folding outwardly the end portion of the reinforcing band on the effective portion outer surface side, wherein when a distance in a direction of the tube axis from a bonding part of the panel and the funnel to an end of the reinforcing band on the outer surface side of the effective portion is represented by a, a distance in the direction of the tube axis from the bonding part of the panel and the funnel to an end of the bent portion on the electron gun side is represented by b, and a distance in the direction of the tube axis from the bonding part to a central position of the outer surface of the effective portion is represented by h, the reinforcing band is arranged to satisfy the following relationship:  a≧0.9h, b≧0.7h.