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JP2003059389A Cathode for electric tube 审中-公开
标题翻译：电线阴极
公开(公告)号：JP2003059389A
公开(公告)日：2003-02-28
申请号：JP2002182016
申请日：2002-06-21
申请人： Samsung Sdi Co Ltd , 三星エスディアイ株式会社
发明人： SAI SHOSHO , KAN TOKI , KAN SHOKEN , JO TOIN , SHIN FUTETSU , RHO HWAN-CHUL
IPC分类号： H01J1/14 , H01J1/20 , H01J9/04 , H01J29/04
CPC分类号： H01J29/04 , H01J1/14
摘要： PROBLEM TO BE SOLVED: To provide a cathode of an electric tube and its manufacturing method. SOLUTION: The emission material layer includes acicular conductive materials and the surface roughness actually measured as the distance between the highest point and the lowest point of the emission material layer surface is controlled to be 10 μm or less. Hence, by including acicular conductive material to the emission material layer and forming the conductive path effectively, generation of Joule heat by self-heating is minimized. In addition, by controlling the diameter of the particles and pores forming the emission material layer to be even and controlling the density and porosity of the layer, the compactness and the surface roughness are improved in comparison with a cathode made by existing spray method. As the result, contraction phenomenon of cathode on operation can be prevented and even interval between the cathode and the first grid can be kept, and thus the electron emission characteristics becomes stable and the product life becomes longer. Thus, the life property under high current density region can be considerably improved to satisfy the recent needs for higher precision and larger size of the television cathode-ray tubes.
摘要翻译：要解决的问题：提供电管的阴极及其制造方法。解决方案：发射材料层包括针状导电材料，并且实际测量的发射材料层表面的最高点和最低点之间的距离的表面粗糙度被控制在10μm以下。因此，通过将针状导电材料包含在发光材料层上并有效地形成导电路径，能够使由自身加热产生的焦耳热量最小化。另外，通过将形成发光材料层的粒子的直径控制为均匀，并且控制层的密度和孔隙率，与通过现有喷雾法制造的阴极相比，致密度和表面粗糙度得到改善。结果，可以防止阴极操作的收缩现象，并且可以保持阴极和第一栅极之间的均匀间隔，因此电子发射特性变得稳定并且产品寿命变长。因此，可以显着改善高电流密度区域下的寿命性能，以满足近来对于更高精度和更大尺寸的电视阴极射线管的需要。

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