Patent ID: 6396055
Filing Date: 2002-05-28
Classification: C03B,H01J

Abstract:
A dislay screen for an image-forming tube of a television or a monitor,wherein said display screen has a central axis (8,8â€²) and comprises a front pane portion (2,2â€²) and a circumferential flange portion (3,3â€²), said circumferential flange portion (3,3â€²) having an outer surface and a circumferential solder edge (7,7â€²) on an end of the circumferential flange portion (3,3â€²) on an opposite side from the front pane portion (2,2â€²); wherein said outer surface of the flange portion (3,3â€²) has a circumferential ring-shaped region (5,5â€²) consisting of a KC surface, said circumferential ring-shaped region (5,5â€²) extends substantially parallel to said central axis (8,8â€²), said central axis (8,8â€²) is perpendicular to a surface of the front pane portion (2,2â€²) passing through a center point on the front pane portion (2,2â€²); and wherein a part of the circumferential flange portion (3,3â€²) extending between said solder edge (7,7â€²) and said circumferential ring-shaped region (5,5â€²) has a wall thickness greater than a wall thickness of the circumferential flange portion in said circumferential ring-shaped region (5,5â€²).