Oxide cathode for electron gun with high density and low thickness
    72.
    发明专利
    Oxide cathode for electron gun with high density and low thickness 审中-公开
    用于具有高密度和低厚度的电子枪的氧化物阴极

    公开(公告)号:JP2003346639A

    公开(公告)日:2003-12-05

    申请号:JP2003118088

    申请日:2003-04-23

    CPC classification number: H01J1/142

    Abstract: PROBLEM TO BE SOLVED: To enable to drastically limit drift of voltage cutoff and to maintain a good maximum emission performance in a DC mode and a pulse mode. SOLUTION: With the oxide cathode for the electron gun including a substrate supporting a porous cathode emission coating (1) based on one or more alkaline earth oxides and a so-called emission area (12) and a non-emission surrounding area (11), an average density of the coating in the emission area (12) is larger than that of the same in the non-emission area (11), and an average thickness of the coating in the emission area (12) is smaller than that of the same in the non-emission area (11). COPYRIGHT: (C)2004,JPO

    Abstract translation: 要解决的问题:为了能够极大地限制电压截止的漂移并且在DC模式和脉冲模式下保持良好的最大发射性能。 解决方案:用于电子枪的氧化物阴极包括基于一个或多个碱土氧化物和所谓的发射区域(12)和非发射周围区域支撑多孔阴极发射涂层(1)的衬底 (11)中,发光区域(12)中的涂层的平均密度大于非发光区域(11)中的涂层的平均密度,并且发光区域(12)中的涂层的平均厚度较小 比非排放地区相同(11)。 版权所有(C)2004,JPO

    CATHODE FOR ELECTRON GUN
    76.
    发明专利

    公开(公告)号:JP2000173441A

    公开(公告)日:2000-06-23

    申请号:JP13182999

    申请日:1999-05-12

    Abstract: PROBLEM TO BE SOLVED: To provide a cathode for an electron gun capable of realizing a long service life in high current density by ensuring a diffusion path of a reducing element to be particularly included in a base metal to disperse an intermediate layer to smoothly generate a free barium atom in the cathode for the electron gun used for a cathode ray tube. SOLUTION: A cathode for an electron gun comprises a base metal 60 including nickel as major component and at least a kind of a reducing element. The cathode further comprises a upper metal layer 62 which is formed by the particle formed by recrystallization in upper surface of the base metal 60. The cathode furthermore comprises an electron emission material layer 80, formed on an upper portion of the upper metal layer 62, including alkaline earth metal oxide including at least barium.

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