Patent ID: 7550902

Claim:
An electronic component device comprising: a rectangular plate-shaped element including a functional part and a first frame-shaped electrode surrounding the functional part, wherein the coefficient of linear expansion in the x direction along a side of the rectangle is different from the coefficient of linear expansion in the y direction orthogonal to the x direction in the rectangular plane; a substrate including a second frame-shaped electrode arranged on a front face of the substrate at a position so as to correspond to the first frame-shaped electrode; and a solder sealing frame provided on the surface of at least one of the first frame-shaped electrode and the second frame-shaped electrode; wherein each of the first frame-shaped electrode, the second frame-shaped electrode, and the solder sealing frame includes a strip-shaped portion extending in the x direction and a strip-shaped portion extending in the y direction; the element and the substrate are bonded together with the solder sealing frame, the functional part provided on the element is hermetically sealed in a space formed between the element and the substrate; and when the difference in expansion in the x direction between the element and the substrate is represented by Q x and the difference in expansion in the y direction between the element and the substrate is represented by Q y , in each of the first frame-shaped electrode, the second frame-shaped electrode, and the solder sealing frame, a width of the strip-shaped portion extending in the direction having the larger difference in expansion is smaller than a width of the strip-shaped portion extending in the direction having the smaller difference in expansion.