Patent ID: 6965107

Claim:
An electronic device, comprising: a main body substrate having a plurality of cell regions in which at least one element is disposed; a cap body placed on said main body substrate; a cavity portion provided in a position having said element disposed therein and being located in at least one cell region of said plurality of cell regions, enclosed by said main body substrate and said cap body to be maintained in an atmosphere of reduced pressure or in an atmosphere of inert gas; and a ring-shaped joining portion provided between said main body substrate and said cap body for isolating said cavity portion from external space, wherein said electronic device comprises an infrared sensor having a thermoelectric transducer element as said at least one element, a support member for supporting said thermoelectric transducer element, and a second cavity portion formed below said support member, and wherein said cap body is provided with a recess portion for forming said cavity portion and a drum portion enclosing the recess portion, and said main body substrate is provided with an engagement portion for engaging with said drum portion.