公开(公告)号：US06555951B2

公开(公告)日：2003-04-29

申请号：US09987381

申请日：2001-11-14

Applicant: Seoung Han Jeoung

Inventor： Seoung Han Jeoung

IPC: H01J2907

CPC classification number: H01J29/861 ,  H01J2229/862

Abstract: Color CRT having a rectangular panel with an outer surface with a radius of curvature greater than 30,000 mm, an inner surface with a fixed curvature, and a skirt extended substantially perpendicular to the inner and outer surfaces, and a funnel connected to a skirt seal edge part of the panel, to meet conditions of 0.18≦OAH/(USD/2)≦0.29, where USD denotes a diagonal effective screen size of the panel, OAH denotes a distance from a center of an outer surface to an extension plane of a skirt seal edge part, OMH denotes a distance from an outer surface molded match line of the panel to the skirt seal edge part, and OSH denotes a distance from the outer surface molded match line of the panel to a skirt brake line, thereby reducing a panel weight compared to the same size of tube for the same effective screen size, that reduces weights of components, resulting to reduce a flat CRT weight in overall, and reduces thermal breakage in a furnace, by adjusting correlations of OAH, OMH, and OSH of an outer surface of a panel.