发明名称 |
CATHODE RAY TUBE AND METHOD FOR MANUFACTURING THE SAME |
摘要 |
<p>A face panel (12) constituting a part of a vacuum envelope (20) has a substantially rectangular effective area (10), the inner surface of which is formed with a phosphor screen (14). The effective area has a long axis (X) extending in the horizontal direction and a short axis (Y) extending in the vertical direction. The outer surface of the effective area is cylindrically curved with an infinitely large radius of curvature along the long axis and a predetermined radius of curvature along the short axis. The vacuum envelope has arranged therein a shadow mask (15) in opposed relation to the phosphor screen. A mask body of the shadow mask has a substantially rectangular effective surface cylindrically curved with an infinitely large radius of curvature along the long axis and a predetermined radius of curvature along the short axis thereof. In manufacturing the shadow mask, a flat mask is subjected to a plastic deformation into a cylindrical shape curved along the short axis and then subjected to an elastic deformation in such a manner that the radius of curvature thereof is larger than at the time of plastic deformation. The mask body thus formed by elastic deformation is fixed to a rectangular frame. <IMAGE></p> |
申请公布号 |
EP0828281(A1) |
申请公布日期 |
1998.03.11 |
申请号 |
EP19970903644 |
申请日期 |
1997.03.03 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
OHAMA, SHINJI;SHIMIZU, NORIO;NAKAGAWA, SHINICHIRO;INOUE, MASATSUGU;FUKUDA, KUMIO |
分类号 |
H01J9/14;H01J29/07;H01J29/86;(IPC1-7):H01J29/86 |
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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