公开(公告)号：US20010052749A1

公开(公告)日：2001-12-20

申请号：US09767368

申请日：2001-01-22

Applicant: Samsung Display Devices Co., Ltd.

Inventor： Do-Houn Pyun ,  Wan Kim ,  Chan-Yong Kim

IPC: H01J029/80 ,  H01J029/10

CPC classification number: H01J29/861 ,  H01J2229/862

Abstract: A cathode ray tube includes a panel having a substantially flat outer surface and an inner curved surface with a phosphor screen. The panel has a substantially rectangular effective screen portion with two long sides parallel to each other, two short sides parallel to each other and four rounded edges interconnecting each long side and the neighboring short side. The effective screen portion is structured such that a first line V1 interconnecting centers of the long sides, a second line H1 interconnecting centers of the short sides and a third line D1 interconnecting centers of the rounded edges opposite to each other meet at a point. The effective screen portion has a first thickness Tv at the centers of the long sides, a second thickness Th at the centers of the short sides, a third thickness Td at the centers of the edges and a fourth thickness Tc at the meeting point of the first to third lines V1, H1 and D1. A shadow mask is disposed within the panel such that the shadow mask faces the inner curved surface of the panel. The shadow mask has a curvature corresponding to the inner curved surface of the panel. The ratio of the second thickness Th to the third thickness Td while subtracting the fourth thickness Tc from each thickness satisfies the following condition: 0.75null(ThnullTc)/(TdnullTc)null0.85, and the ratio of the first thickness Tv to the third thickness Td while subtracting the fourth thickness Tc from each thickness satisfies the following condition: 0.75null(TvnullTc)/(TdnullTc)null0.85.

Abstract translation: 阴极射线管包括具有基本平坦的外表面的面板和具有荧光屏的内曲面。 面板具有基本上矩形的有效屏幕部分，其两个长边彼此平行，两个短边彼此平行，并且四个圆形边缘互连每个长边和相邻的短边。 有效屏幕部分被构造成使得互连长边的中心的第一线V1，互连短边的中心的第二线H1和彼此相对的圆形边缘的互连中心的第三线D1在一点相交。 有效屏幕部分在长边的中心处具有第一厚度Tv，在短边的中心处具有第二厚度Th，在边缘的中心处具有第三厚度Td，在第二厚度Td处于第二厚度T d 第一到第三线V1，H1和D1。 荫罩设置在面板内，使得荫罩面对面板的内弯曲表面。 荫罩具有对应于面板的内曲面的曲率。 第二厚度Th与第三厚度Td的比率，同时从每个厚度减去第四厚度Tc满足以下条件：0.75 <=（Th-Tc）/（Td-Tc）<= 0.85，并且第一厚度Th 厚度Tv至第三厚度Td，同时从每个厚度减去第四厚度Tc满足以下条件：0.75 <=（Tv-Tc）/（Td-Tc）<= 0.85。