发明公开
- 专利标题: Color cathode ray tube
- 专利标题(中): 彩色阴极射线管
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申请号: EP01303399.8申请日: 2001-04-11
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公开(公告)号: EP1150325A1公开(公告)日: 2001-10-31
- 发明人: Shimada, Koji , Wakasono, Hiromo
- 申请人: Matsushita Electric Industrial Co., Ltd.
- 申请人地址: 1006-banchi, Oaza-Kadoma Kadoma-shi, Osaka-fu, 571-8501 JP
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: 1006-banchi, Oaza-Kadoma Kadoma-shi, Osaka-fu, 571-8501 JP
- 代理机构: Jeffrey, Philip Michael
- 优先权: JP2000123746 20000425
- 主分类号: H01J29/06
- IPC分类号: H01J29/06 ; H01J29/84
摘要:
In a color cathode ray tube in which a shadow mask 1 and an inner magnetic shield 2 are supported by a mask frame 31 and an electron shield 33 is provided in the mask frame 31, at least a part of the electron shield 33 is made to have a smaller anhysteretic magnetic permeability than the shadow mask 1, the mask frame 31 and the inner magnetic shield 2 when an applied magnetic field is 800 A/m (10 Oe). Since the magnetic resistance of the electron shield 33 increases, it is possible to reduce a leakage magnetic field from a tube-axis-side edge of the electron shield 33. Thus, a color cathode ray tube that reduces mis-landing due to a terrestrial magnetism and has no color displacement can be provided.
公开/授权文献
- EP1150325B1 Color cathode ray tube 公开/授权日:2004-01-21
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