| 摘要 |
<P>PROBLEM TO BE SOLVED: To assure adhesion and to assure emission efficiency. <P>SOLUTION: A nickel or a nickel alloy plating film 3 and a silver alloy plating film 4a, containing antimony, are stacked on a metal material 2. Over them, a silver plating film 4b is formed at least in a formation region of a reflector 5 by using a low cyan silver plating solution. Thus, adhesion is assured and emission efficiency is assured. <P>COPYRIGHT: (C)2012,JPO&INPIT |
