Farbbildröhren mit verbessertem Stirnplatten-Paneel

The present invention provides an improvement in a color picture tube. The tube includes an envelope comprising a faceplate panel, a funnel and a neck. The faceplate panel includes a transparent rectangular faceplate having a cathodoluminescent screen on an interior surface thereof, and a peripheral sidewall. The improvement comprises the faceplate panel having either an interior or exterior blend radius from the faceplate to the sidewall that varies around the periphery of the panel in such a manner that the stresses in predetermined areas of the panel are reduced.