发明授权
- 专利标题： Shadow mask for Braun tube
- 专利标题（中）： 阴影面具为Braun管
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申请号： US09698576申请日： 2000-10-27
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公开(公告)号： US06593684B1公开(公告)日： 2003-07-15
- 发明人: Akira Makita , Takahito Aoki , Nobuaki Kanayama
- 申请人： Akira Makita , Takahito Aoki , Nobuaki Kanayama
- 优先权： JPP11-310064 19991029
- 主分类号： H01J2907
- IPC分类号： H01J2907
摘要：
A shadow mask for a Braun tube is composed of an iron-based alloy plate of a low thermal expansion structure containing nickel and cobalt, and the iron-based alloy plate has a crystal grain size of more than 6.0 and less than 9.0 measured by a grain size measuring method prescribed in JIS (Japanese Industrial Standard) G0551, and 0.2% proof stress of more than 240N/mm2 and less than 320N/mm2.
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