Patent ID: 7259032

Claim:
A method for manufacturing an electronic device which comprises an electronic element having a functional portion and terminal electrodes on a primary surface thereof, and a bond substrate having bond electrodes, which correspond to the terminal electrodes, on a primary surface of the bond substrate, the primary surface of the electronic element facing the primary surface of the bond substrate, the terminal electrodes being bonded to the bond electrodes with bumps provided therebetween for electrical conduction, the electronic element being bonded to the bond substrate with a sealing frame provided therebetween, the sealing frame surrounding the functional portion and the bumps to hermetically seal the electronic device, the method comprising the steps of: forming a first resist pattern on one of the primary surfaces of the electronic element and the bond substrate, the first resist pattern having openings at locations corresponding to those at which the bumps and the sealing frame are to be formed; sequentially forming metals over the first resist pattern, the metals being formed into at least one adhesion layer, at least one barrier metal layer, and at least one solder layer; removing the first resist pattern such that the bumps and the sealing frame are simultaneously formed on said one of the primary surfaces of the electronic element and the bond substrate; forming a metal layer, which faces the sealing frame, on the primary surface other than said one of the primary surfaces of the electronic element and the bond substrate; and bonding the electronic element and the bond substrate to each other with the bumps and the sealing frame provided therebetween, in which the solder layer is heated such that metals forming the solder layer are alloyed or the solder layer is alloyed with a metal layer adjacent thereto to form metal bonding.