DISCHARGE ELECTRODE, DISCHARGE LAMP, AND METHOD AND APPARATUS FOR MANUFACTURING DISCHARGE ELECTRODE

摘要

The strength of bonding between a connection (lead) wire and a cup member of an electrode of a cold-cathode fluorescent tube to serve as a backlight of a liquid crystal panel is increased, and an excellent characteristic is imparted to the electrode of the cold-cathode fluorescent lamp. A discharge electrode of a cold-cathode fluorescent tube is made of one or more of high-melting point metals such as Mo, W, Ta, and Nb, or one or more of high-melting point metals to which added is a small amount of alloy material such as Ni or Cu having a function of improving the warm workability of the high-melting point metal and a function of regulating the growth of crystal grains, or a single crystal metal of these. The discharge electrode is integrally produced by warm or hot working such as warm or hot press, extrusion, or ironing of the cup section or of the lead wire section (rod) and the cup sections.