| 摘要 |
PURPOSE:To manufacture the title insulation coated bonding wire in excellent insulation characteristics, continuous joint characteristics, thermal resistance, etc., capable of preventing the shortcircuit due to contact by a method wherein the bonding wire is coated with an aromatic polyester resin having the basic skeleton represented by specific structural formula as well as the melt index within specific range. CONSTITUTION:The title bonding wire is coated with an aromatic polyester resin of melt index of 1.0-100g/min having the basic skeleton represented by the shown structural formula. For example, a high purity bonding gold wire in outer diameter of 30mum as a base material is immersed in a solution wherein the said aromatic polyester resin is melted in chloroform and then picked up in the vertical direction to remove the solvent for manufacturing the bonding wire coated with the insulating aromatic polyester resin. Finally, the concentration of the solution and the coating rate is adjusted corresponding to the melt index of the applied aromatic polyester resin so that the bonding wire may be coated with the said resin in film thickness of around 0.3mum. |
