| 摘要 |
A multi-chip package type semiconductor device includes a first insulating substrate having a hollow on its main surface, a second insulating substrate having on its main surface an opening, which is larger than the hollow, and being on the first substrate wherein the opening encompasses the hollow, a first semiconductor chip being formed in the hollow, a second first semiconductor chip whose size is approximately the same as that of the first semiconductor chip, being supported by the first insulating substrate in an area, which encompasses the hollow.
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