| 摘要 |
THE IMPROVED COLOR PICTURE TUBE (10) IS OF A TYPE THAT HAS A GLASS ENVELOPE (11) WITH A SUBSTANTIALLY RECTANGULAR FACEPLATE PANEL (12) A FUNNEL (16) AND A NECK (14). THE ENVELOPE HAS THREE ORTHOGONAL AXES, A MAJOR AXIS, X-X, SUBSTANTIALLY PARALLEL TO A WIDER DIMENSION OF THE PANEL, A MINOR AXIS, Y-Y, SUBSTANTIALLY PARALLEL TO A NARROWER DIMENSION OF THE PANEL, AND A LONGITUDINAL AXIS, Z-Z, EXTENDING THROUGH THE CENTER OF THE NECK AND THE CENTER OF THE PANEL. THE FUNNEL HAS A MAIN BODY PORTION (30), AND A YOKE REGION (32) WHICH IS SEALED TO THE NECK. THE WEIGHT OF THE FUNNEL IS REDUCED BY REDUCING THE THICKNESS OF A SIDEWALL (31) WITHIN THE MAIN BODY PORTION. AN INCREASE IN TENSILE STRESS WITHIN THE YOKE REGION, THAT RESULTS FROM REDUCING THE THICKNESS OF THE SIDEWALL IN THE MAIN BODY PORTION, IS MINIMIZED BY VARYING THE THICKNESS OF A SIDEWALL (33) IN THE YOKE REGION, SO THAT THE GREATEST THICKNESS IN THE SIDEWALL IN THE YOKE REGION OCCURS IN PROXIMITY TO THE MAJOR AXIS.FIGURE 2
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