Patent ID: 9721879
Date: 2017-08-01
CPC Classifications: H01L

Claim:
1. A method of manufacturing a device with pillar-shaped components, comprising: attaching a first photoresist dry film to a substrate; forming first holes penetrating the first photoresist dry film in a thickness direction of the first photoresist dry film; forming first pillar-shaped parts in the first holes by plating; thereafter attaching a second photoresist dry film to an upper surface of the first photoresist dry film, thereby forming a multilayered structure of photoresist dry films; forming second holes penetrating the second photoresist dry film in a thickness direction of the second photoresist dry film so as to be connected with the first holes respectively; forming second pillar-shaped parts on the first pillar-shaped parts by plating, wherein said forming the first pillar-shaped parts is performed so that upper surfaces of the first pillar-shaped parts are lower than the upper surface of the first photoresist dry film; removing the second photoresist dry film and the first photoresist dry film; mounting an additional component over the substrate; sealing the additional component and the pillar-shaped components composed of the first and second pillar-shaped parts with a molding resin, thereby forming a sealed structural body; and applying chemical mechanical polishing to the sealed structural body.