| 摘要 |
<p>In a crystal oscillator, a crystal piece is stored in a container main body composed of a bottom wall layer and a frame wall layer, and a metal cover is bonded to the container main body by a eutectic alloy. The crystal piece is held by a pair of crystal connecting terminals formed at a position to be an inner bottom surface of a container main body on one end side of the container main body. A grounding external terminal is arranged at one corner of the outer bottom surface of the container main body at the other end side of the container main body. To connect the metal cover to the grounding external terminal, a first conduction metal film electrically connected to the metal cover through a metal end surface film on an inner wall side surface of the frame wall layer is formed on a lower surface of the frame wall layer, and a second conduction metal film electrically connected to the grounding external terminal through a metal end surface film on a container main body outer side surface is formed on an upper surface of the bottom wall layer, corresponding to the positions where the grounding external terminals are formed.</p> |
