| 摘要 |
<p>Provided is a crystal oscillation device in which a cap is less susceptible to positional deviation and for which size reduction is possible. A crystal oscillation device (1) is provided with: a case substrate (2); a crystal oscillator (5) mounted onto the case substrate (2); a cap (6) that has an opening that opens downward and is bonded to the case substrate (2) from the opening side so as to surround the crystal oscillator (5); and a bonding member (3) that bonds the cap (6) and the case substrate (2) together, and is in the shape of a frame. In a cross-section of the bonding member (3), the width of the bonding member (3) is smaller than the width of a portion of the cap (6) that is bonded to the case substrate (2). The bonding member (3) is positioned within the width of the cap (6), and the position of an end of the bonding member (3) in the width direction does not go beyond the position of an end of the cap (6) in the width direction.</p> |
