Patent ID: 7514295

Claim:
A method for processing a base comprising the steps of: forming over a surface of a first base a first electrode having a projection and formed of a conductive material which is solid and does not exhibit an adhesiveness at room temnerature, becomes soft and exhibits the adhesiveness at a temperature not lower than a first temperature, and cures and loses the adhesiveness at a temperature not lower than a third temperature higher than the first temperature; covering over the surface of the first base including the first electrode with an insulating film of an insulating material which exhibits an adhesiveness at a temperature not lower than a second temperature; planarizing a surface of the first electrode and a surface of the insulating film by cutting with a cutting tool with the first electrode and the insulating film retained at a temperature lower than a lower one of the first temperature and the second temperature; raising to a temperature not lower than a higher one of the first temperature and the second temperature; and opposing a second base with a second electrode formed thereon and the first base to each other with the first electrode and the second electrode in contact with each other to connect the first base and the second base by the insulating film while electrically connecting the first electrode and the second electrode with each other.