Patent ID: 7213741

Claim:
A lead wire bonding method comprising: (a) fixing one end of a lead wire having said one end and an other end to a substrate; (b) bending said lead wire after being fixed; and (c) bringing said substrate, to which said bent lead wire is fixed, into a case having a terminal and bonding said other end of said lead wire to said terminal of said case, wherein: said lead wire has a plate-like shape; said lead wire is so arranged as to extend in parallel to a main surface of said substrate and a plate-like surface of said one end of said lead wire is fixed to said substrate in said step (a); a portion of said lead wire near said one end is bent so that said other end of said lead wire is directed toward a substantially normal direction of said main surface of said substrate in said step (b); and a plate-like surface of said other end is bonded to said terminal with a portion of said lead wire near said other end also bent in said step (c).