METALLIC THIN STRIP FOR INSTALLING SEMICONDUCTOR LIGHT-EMITTING ELEMENT

摘要

PURPOSE:To prevent the lowering of luminous output by putting a metallic layer into which copper is difficult to diffuse between a copper layer and a silver layer at a tip section of a lead wire for installing the semiconductor light-emitting element. CONSTITUTION:A Ni kayer 14 is put between the Cu layer 12 and the Ag layer 13 on a Fe raw marerial 11. According to this constitution, the amount of Cu ions precipitating on the surface can be decreased without thickening the thickness of the expensive Ag layer 13, and manufacturing cost is reduced while an adverse effect on the luminous output characteristic of a light-emitting diode pellet due to Cu ions can be prevented.