LEAD WIRE CONNECTION METHOD FOR COLD CATHODE TUBE

摘要

PROBLEM TO BE SOLVED: To electrically connect a lead wire to a cold cathode tube terminal within short time without using solder.

SOLUTION: A circular part (3a) of the metallic lead wire (3) is wound on a terminal (2) led out from a glass tube (1) constituting the cold cathode tube, and a laser beam (7) is irradiated on an end part (2a) of the terminal (2) protruding toward outside of the lead wire (3) to heat the end part (2a) with a temperature higher than the melting point of the metal constituting the terminal (2). By the above, the end part (2a) is liquefied and deformed into a locking part (4) by the surface tension, and the metal itself constituting the terminal (2a) is firmly and surely welded to the lead wire (3).

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