Patent ID: 7790594
Filing Date: 2010-09-07
Classification: G01D,G01L,H01G,H01L

Abstract:
1. A method of producing an electronic part, during which a bonding substrate is bonded to a device substrate having a functional portion, to cover the device substrate while forming a gap therebetween, the method comprising: providing one of a device substrate and a bonding substrate as a first substrate and the other as a second substrate, and forming a second electrode portion on the second substrate, the second electrode portion having a core pattern protruding towards the first substrate and a bump pattern having an electrical conductivity and a hardness lower than those of the core pattern and covering a surface of the core pattern, wherein surface roughness B of the bump pattern is greater than surface roughness A of the core pattern, forming a first electrode portion of the same material as the bump pattern at a location of the first substrate corresponding to the second electrode portion, and electrically connecting the first electrode portion and the second electrode portion by plastically deforming the bump pattern and the first electrode portion by pressing together the second electrode portion of the second substrate and the first electrode portion of the first substrate, together with directly bonding the first electrode portion and the bump pattern.