SEMICONDUCTOR ELEMENT, SEMICONDUCTOR DEVICE, ELECTRIC POWER CONVERTER, AND METHOD FOR PRODUCING SEMICONDUCTOR ELEMENT

摘要

The purpose of the present invention is to provide a technology by which corrosion of a first electrode and a second electrode is able to be suppressed. A semiconductor element 101 according to the present invention is provided with a semiconductor substrate 1, an Al electrode 2, a polyimide member 3 that is selectively arranged on the Al electrode 2, and an Ni electrode 4. The polyimide member 3 has a projected part 3a, which protrudes in the plane direction of the upper surface of the Al electrode 2, in a lower part that is in contact with the Al electrode 2 when viewed in cross section in at least a part of the peripheral part of the polyimide member 3 when viewed from the above. The Ni electrode 4 is arranged on the Al electrode 2 and the projected part 3a.