发明名称 |
COLOR PICTURE TUBE AND METHOD FOR MANUFACTURING THE SAME |
摘要 |
A color picture tube comprises a shadow mask which is formed to, oppose at a small gap therefrom, a phosphor screen formed on the inner surface of a panel. The shadow mask comprises a sheet of a nickel-containing iron alloy which contains 0.1% by weight or less of manganese and having an austenite grain number of 7 or less both within and at surfaces of the sheet, the austenite grain number being defined by JIS G 0551 of the Japanese Industrial Standards. The iron alloy sheet is annealed in a vacuum of 10-1 Torr or less at a temperature of 1,000 DEG C. or higher prior to formation into the shadow mask. |
申请公布号 |
DE3366460(D1) |
申请公布日期 |
1986.10.30 |
申请号 |
DE19833366460 |
申请日期 |
1983.07.25 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
KANTO, MASAHARU;AKIYOSHI, EIICHI;OHTAKE, YASUHISA |
分类号 |
H01J9/14;H01J29/07;(IPC1-7):H01J29/07 |
主分类号 |
H01J9/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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