发明授权
US4481441A Method of manufacturing a picture display tube having a gas-absorbing
layer; picture display tube thus manufactured, and gettering device
suitable for such a method
失效
制造具有气体吸收层的图像显示管的方法; 如此制造的图像显示管，以及适合于这种方法的吸气装置
- 专利标题： Method of manufacturing a picture display tube having a gas-absorbing layer; picture display tube thus manufactured, and gettering device suitable for such a method
- 专利标题（中）： 制造具有气体吸收层的图像显示管的方法; 如此制造的图像显示管，以及适合于这种方法的吸气装置
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申请号： US351574申请日： 1982-02-23
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公开(公告)号： US4481441A公开(公告)日： 1984-11-06
- 发明人: Wilhelmus A. van Gils
- 申请人： Wilhelmus A. van Gils
- 申请人地址： NY New York
- 专利权人： U.S. Philips Corporation
- 当前专利权人： U.S. Philips Corporation
- 当前专利权人地址： NY New York
- 优先权： NLX8101459 19810324
- 主分类号： H01J9/39
- IPC分类号： H01J9/39 ; H01J29/94 ; H01J9/20
摘要：
A gettering device installed in a picture display tube includes an annular, channel-shaped metal holder containing an evaporable gettering metal and a heat-activated gas releasing material. The gas releasing material is disposed in the holder against a surface which rapidly increases in temperature in response to inductive heating of the holder. This material is covered by the gettering metal to protect it against deterioration by exposure to moist, high temperature air during tube manufacturing processes occurring after installation of the device. During inductive heating, the temperature of the gas releasing material increases faster than that of the gettering metal and begins releasing gas before the gettering metal begins to evaporate.
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