| 摘要 |
PURPOSE:To obtain a wire of a copper wire or a copper alloy wire having an insulating and corrosionproof coating layer which can be preserved a long time and whose coefficient of friction at the passage of a clamper and a capillary in a bonding apparatus is small by a method wherein the insulating and corrosionproof coating layer is formed on the surface of the copper wire or the copper alloy wire and a lubricating layer is formed on this layer. CONSTITUTION:A wire 1 for an element such as a semiconductor or the like is formed in such a way that a lubricating layer 2 is formed on the surface of a copper wire or a copper alloy wire 4 having an insulating and corrosionproof coating layer 3; The coating layer 3 is formed of an organic resin such as polyurethane, polyethylene, an epoxy or the like; the lubricating layer 2 is formed of an ethylene tetrafluoride resin, a surface-active agent or the like. In addition, it is desirable that a layer thickness of the coating layer 3 formed of the organic resin is about 0.3-2.0mum and that a layer thickness of the lubricating layer 2 formed of the ethylene tetrafluoride resin or the surface-active agent is about 0.05-1.0mum. The surface-active agent is an anionic surface-active agent, a nonionic active agent or the like. For example, polyoxyethylene alkylether sulfate, polyoxyethylene alkylether or the like can be used. It is possible to prevent an electrical short circuit and oxidation. |
