Patent ID: 6890834

Claim:
A method for manufacturing an electronic device comprising: a step (a) of preparing a main body substrate having a plurality of cell regions in which at least one element is disposed and a cap substrate, and forming a plurality of recess portions each enclosing at least one cell region of said plurality of cell regions on at least any one of said main body substrate and said cap substrate; and a step (b) of permanently forming a closed-loop circular joining portion such that at least part of recess portions of said plurality of recess portions may remain as cavity portions isolated from external space between said main body substrate and said cap substrate, by applying a push pressure between said main body substrate and said cap substrate, by applying a push pressure between said main body substrate and said cap substrate; wherein said step (a) includes preparing a plurality of first and second ring-shaped films enclosing said recess portions on said main body substrate and cap substrate, respectively, and said step (b) includes forming said closed-loop circular joining portion between said first and second ring-shaped films; and wherein said step (a) is performed by using material selected from at least any one of In, Cu, Al, Au, Ag, Ti, W, Co, Al—Cu alloy, and an oxide film as the materials of said first and second ring-shaped films.