| 摘要 |
An error is prevented from being generated at a mounting position of an electronic component on a wiring substrate. A first semiconductor chip has a main surface and a rear surface. The rear surface is an opposite surface of the main surface. The rear surface of the first semiconductor chip is an opposite surface of the main surface thereof. A wiring substrate is rectangular, and has a main surface and a rear surface. The first semiconductor chip is mounted on the main surface of the wiring substrate. A lid covers the main surface of the wiring substrate, and the first semiconductor chip. An electronic component is mounted on the rear surface of the wiring substrate. The main surface of the wiring substrate has uncovered regions that are not covered with the lid at at least two corners facing each other. |
