Abstract: A semiconductor package includes: first, second, third and fourth semiconductor chips stacked while having the arrangement of chip selection vias; and a connection unit provided between a second semiconductor chip and a third semiconductor chip, and configured to mutually connect some of the chip selection vias of the second and third semiconductor chips and disconnect the others of the chip selection vias of the second and third semiconductor chips, wherein the first and second semiconductor chips and the third and fourth semiconductor chips are stacked in a flip chip type.

Abstract: A stacked semiconductor package includes first and second semiconductor chips including semiconductor chip bodies which have circuit units, first through-electrodes which pass through the semiconductor chip bodies at first positions, and second through-electrodes which pass through the semiconductor chip bodies at second positions and provide a chip enable signal to the circuit units. A spacer including a spacer body may be interposed between the first semiconductor chip and the second semiconductor chip, with an inverter chip embedded in the spacer body. Wiring patterns formed on the spacer body may connect the first through-electrodes of the first semiconductor chip with the second through-electrodes of the second semiconductor chip, the first through-electrodes of the first semiconductor chip with input terminals of the inverter chip, and output terminals of the inverter chip with the second through-electrodes of the first semiconductor chip.

Abstract: A spiral staircase shaped stacked semiconductor package is presented. The package includes a semiconductor chip module, a substrate and connection members. The semiconductor chip module includes at least two semiconductor chips which have chip selection pads and through-electrodes. The semiconductor chips are stacked such that the chip selection pads are exposed and the through-electrodes of the stacked semiconductor chips are electrically connected to one another. The substrate has the semiconductor chip module mounted thereto and has connection pads. The connection members electrically connect the chip selection pads to respective connection pads.

Abstract: A semiconductor package includes a semiconductor chip possessing a shape with corners and has a circuit section. The semiconductor chip has one or more chamfered portions which are formed in a first corner group that includes one or more of the corners. Data bonding pads are disposed on the semiconductor chip and are electrically connected to the circuit section. A chip selection pad is disposed adjacent to a second corner group that includes at least one of the corners which is not formed with a chamfered portion. The chip selection pad is electrically connected to the circuit section. A plurality of the semiconductor packages may be stacked so that the chip selection pad of one of the semiconductor packages is left exposed when another semiconductor package is stacked thereover due to the chamfered portion of the other semiconductor package.