发明名称 |
COLOUR CATHODE RAY RUBE |
摘要 |
In a color cathode ray tube with a shadow mask shaped as a nonspherical surface, a structure in which the curved surface shape of the effective area of the shadow mask in which apertures through which electron beams pass to a fluorescent screen are formed is made such that, going along the X axis, minimal values of radius of curvature of lines of intersection of the shadow mask and Y-Z parallel planes parallel to the minor axis Y and a central axis which passes through the mask's center and is normal to the mask exist between the center and the edges of the effective area. This prevents local doming. |
申请公布号 |
DE3572253(D1) |
申请公布日期 |
1989.09.14 |
申请号 |
DE19853572253 |
申请日期 |
1985.09.12 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
INOUE, MASATSUGU C/O, PATENT DIVISION;YAMAZAKI, HIDETOSHI C/O, PATENT DIVISION |
分类号 |
H01J29/86;H01J29/07;(IPC1-7):H01J29/07 |
主分类号 |
H01J29/86 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|