Patent ID: 9644962
Date: 2017-05-09
CPC Classifications: B23K,G01C,H01L,H05K

Claim:
1. A manufacturing method of an electronic device that accommodates an electronic component in an inner space formed by a base and a lid body, the manufacturing method comprising: preparing the lid body in which a groove is provided on a surface which is welded with the base, the groove having a first opening on an inner space side of the lid body and a second opening on an outer periphery side of the lid body; first, welding the base and the lid body at a portion excluding an unwelded portion that includes at least a part of the groove, of a planned welding portion of the base and the lid body, in a state in which the inner space has air communication with an outside through the groove; and second, welding the base and the lid body at the unwelded portion such that the second opening of the groove is closed in a state in which the inner space has no air communication with the outside, wherein the first opening has a first width in a plan view, the second opening has a second width in the plan view, and the first width is smaller than the second width, and part of the groove directly adjacent to the first opening is overlapped with the inner space in the plan view.