公开(公告)号：US06232708B1

公开(公告)日：2001-05-15

申请号：US09169743

申请日：1998-10-08

申请人： Suk-ki Kim ,  Sang-wook Shin ,  Chul-han Bae ,  Kwong-im Cho

发明人： Suk-ki Kim ,  Sang-wook Shin ,  Chul-han Bae ,  Kwong-im Cho

IPC分类号： H01J114

CPC分类号： H01J1/142 ,  H01J1/144

摘要： A cathode for a cathode ray tube includes a base having a closed top portion and containing nickel as its main component, an electron-emitting material layer coated on the top portion of the base and containing alkali-earth metal oxides as its main component, rare-earth metals or rare-earth metal compounds attached on a surface of the electron-emitting material layer, and a heater placed under the top portion of the base to heat it.

摘要翻译： 用于阴极射线管的阴极包括具有封闭顶部并且以镍为主要成分的基底，涂覆在基底顶部并以碱土金属氧化物为主要成分的电子发射材料层是罕见的 - 附着在电子发射材料层的表面上的地下金属或稀土金属化合物，以及放置在基底顶部以加热基底的加热器。