| 摘要 |
A semiconductor device, such as an IC package, having the same size as an IC chip and having improved qualities is manufactured at a low cost by a particular manufacturing method. The semiconductor device has stepped-projection bumps bonded to electrode pads on a semiconductor substrate in which a semiconductor element is formed. A column portion and a portion in a horizontal portion of each stepped-projection bump are exposed while the other portion of the bump is covered with a protective material. When windows of the protective material corresponding to the column portions are formed, the windows are patterned by using a masking material based on a photoetching method, and the protective material is removed by etching.
|
