Patent ID: 7784670
Filing Date: 2010-08-31
Classification: B23K,G02B,H01L,H01S

Abstract:
1. A bonding method for bonding objects to be bonded having a bonding portion formed of metal, comprising the following steps: (a) treating said bonding portions of said objects to be bonded with an energy wave which is an atom beam, an ion beam, or a plasma to thereby clean the bonding portions of adhering substances; (b) contacting said bonding portions of said objects to be bonded with each other in a low vacuum of 10 (c) crushing minute irregularities on a bonding surface of the bonding portions in contact with each other to thereby bond the objects to be bonded together, wherein said bonding portions of objects to be bonded are formed of gold, after step (a) and prior to step (b) at least some of the adhering substances readhere to the bonding portions to thereby form an adhering substance layer, step (c) causes a bonding interface between the bonding portions to spread by spreading the adhering substance layer which causes a new gold surface to appear at the bonding interface so that bonding is achieved between the bonding portions, and steps (b) and (c) are each performed in a solid phase at a temperature between room temperature and 180° C.