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The cup die discharge electrode null niobium for the cold cathode lamp which was created with the production manner and its production manner of the cup die discharge electrode for the
The cup die discharge electrode null niobium for the cold cathode lamp which was created with the production manner and its production manner of the cup die discharge electrode for the
PROBLEM TO BE SOLVED: To prevent the occurrence of damages during a process of drawing a discharge lamp, of which a main material is niobium or molybdenum, into a shape of a cup.;SOLUTION: The main metallic material of the cup type discharge electrode for a cold cathode discharge lamp is either niobium or molybdenum. Before a process of drawing a flat sheet 4 into a shape of a cup, a nickel plating layer 5 is formed on the surface of the sheet 4 which is to contact the upper die of a die set 6. This formation of a the nickel plating layer 5 will prevent the occurrence of damages to be made by scratching by an edge of the die and the occurrence of metallic particles from the damages, and as a result a product value of the cup type discharge electrode 2 of niobium or molybdenum will be enhanced and a service life of the die set will be extended.;COPYRIGHT: (C)2007,JPO&INPIT
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