发明名称 |
Color cathode ray tube |
摘要 |
A shadow mask is formed by press molding and includes a substantially rectangular mask effective portion in the form of a gently sloped dome having electron beam passage apertures and a skirt portion extending from the peripheral edge of the mask effective portion. The skirt portion has a plurality of apertures arranged parallel to the peripheral edge of the mask effective portion and spaced from one another and belt portions formed between the apertures and an extending end edge of the skirt portion and extending along the extending end edge. Each of the apertures is formed so that its width increases from the peripheral edge of the mask effective portion toward the extending end edge side of the skirt portion.
|
申请公布号 |
US2002158562(A1) |
申请公布日期 |
2002.10.31 |
申请号 |
US20020082342 |
申请日期 |
2002.02.26 |
申请人 |
OKAMOTO HISAKAZU;MASUMURA TETSUYA |
发明人 |
OKAMOTO HISAKAZU;MASUMURA TETSUYA |
分类号 |
H01J29/07;(IPC1-7):H01J29/80 |
主分类号 |
H01J29/07 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|