Patent ID: 9425135
Filing Date: 2016-08-23
CPC Classification: H01L

Claim Text:
1. An electrode body forming method comprising the steps of: forming a base member having a predetermined thickness; and forming a plurality of electrode portions on one surface of the base member in a thickness direction of the base member, wherein the step of forming the plurality of electrode portions comprises the steps of: forming a plurality of basic bumps that are formed to protrude on the base member, each of the plurality of the basic bumps being formed in a substantially columnar shape, and forming one or more fragile bumps that are formed on an upper surface of each of the basic bumps, independently from the basic bump, wherein a metallic bond is formed between the fragile bumps and the basic bump on which the fragile bumps are formed, wherein the fragile bumps and the basic bumps are formed of the same material, and wherein a height of each fragile bump is equal to or greater than a height irregularity of the basic bumps.