Patent ID: 8304877

Claim:
A semiconductor device comprising: a first semiconductor chip formed in a rectangular shape that is defined by first, second, third and fourth sides, the first side opposing to the second side, the third side opposing to the fourth side, the first semiconductor chip including a plurality of first through electrodes each penetrating the first semiconductor chip; a plurality of second semiconductor chips, each of the second semiconductor chips being formed in a rectangular shape that is defined by fifth, sixth, seventh and eighth sides, the fifth side opposing to the sixth side, the seventh side opposing to the eighth side, each of the second semiconductor chips being substantially equal in area to each other and different in area from the first semiconductor chip such that the fifth and sixth sides are greater in length than the first and second sides of the first semiconductor chip, the seventh and eighth sides are approximately equal in length to the third and fourth sides of the first semiconductor chip, each of the second semiconductor chips including a plurality of second through electrodes each penetrating each of the second semiconductor chips, each of the second semiconductor chips being stacked with each other to provide a chip stack structure in which the fifth, sixth, seventh, and eighth sides of a lower one of the second semiconductor chips are approximately vertically aligned with the fifth, sixth, seventh, and eighth sides of an upper one of the second semiconductor chips, respectively, and the second through electrodes of a lower one of the second semiconductor chips are approximately vertically aligned with the second through electrodes of an upper one of the second semiconductor chips, respectively, the chip stack structure being stacked with the first semiconductor chip such that the first through electrodes of the first semiconductor chip are approximately vertically aligned with the second through electrodes of one of the second semiconductor chips, respectively, that the first side of the first semiconductor chip is approximately in the same vertical plane as the fifth side of the one of the second semiconductor chips, that the second side of the first semiconductor chip is approximately in the same vertical plane as the sixth side of the one of the second semiconductor chips, and that each of the second through electrodes is electrically connected to an associated one of the first through electrodes.