发明授权
- 专利标题： Color picture tube having a low expansion tension mask
- 专利标题（中）： 具有低膨胀张力掩模的彩色显像管
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申请号： US09283548申请日： 1999-04-01
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公开(公告)号： US06407488B1公开(公告)日： 2002-06-18
- 发明人: Frank Rowland Ragland, Jr.
- 申请人： Frank Rowland Ragland, Jr.
- 主分类号： H01J2907
- IPC分类号： H01J2907
摘要：
A color picture tube having a tension mask attached to a support frame, wherein the mask if made from a material having a significantly lower coefficient of thermal expansion than the coefficient of thermal expansion of the material of the frame. The frame tensions the mask to have a fundamental resonant frequency of 90 Hz±20 Hz.
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