| 摘要 |
PROBLEM TO BE SOLVED: To provide a bonding wire which little cause the loop trouble even in the form of a long looped wire and manufacture thereof. SOLUTION: The bonding wired has at least a film of a mineral oil, animal/ plant oil, synthetic oil or surfactant formed on the surface of a very thin metal wire by the dip electrodeposition or spray coating. This film thickness has a gradient measured by the atmospheric ultraviolet photoelectron method i.e., normalized photoelectron absorption Y divided by exciting energy eV is 15-40Y/eV, pref. 20-30Y/eV in this method. |
