Semiconductor device having a multi-layered semiconductor substrate
View Patent ↗A semiconductor device includes an interface chip and a plurality of DRAM chips consecutively layered on the interface chip. A plurality of source electrodes, a plurality of ground electrodes, and a plurality of signal electrodes penetrate DRAM chips and interconnect the DRAM chips to the interface chip, which is connected to an external circuit. Each source electrode, a corresponding signal electrode and a corresponding ground electrode are arranged adjacent to one another in this order to reduce electromagnetic noise during operation of the DRAM chip.
1. A semiconductor device comprising:
multi-layered semiconductor substrates each formed with integrated circuits, a pair of power supply lines, signal lines correspondingly connected to said integrated circuits, and through-holes crossing the semiconductor substrate in the thickness direction;
inter-chip electrodes arranged vertically to said semiconductor substrates through said through-holes, at least two of said inter-chip electrodes being connected to said power supply lines, at least one other of said inter-chip electrodes being connected to said signal lines and arranged adjacent to, but closely spaced from, at least one of said power supply lines, a respective one of said inter-chip electrodes that is connected to a signal line being between corresponding inter-chip electrodes that are connected to said power supply lines;
an interface semiconductor substrate assembled by being stacked up with said multi-layered semiconductor substrates and interfacing transmission of signals via the inter-chip electrode connected to said signal lines; and
a plurality of external electrodes electrically connected to said inter-chip electrodes.
2. A semiconductor memory device comprising:
a multi-layered memory stack of a plurality of semiconductor substrates each including a plurality of memory cells, driver circuits connected to the corresponding memory cells and a pair of power supply lines and signal lines correspondingly connected to said memory cells and driver circuits, each of said semiconductor substrates further including a plurality of through-holes crossing the semiconductor substrate in the thickness direction;
inter-chip electrodes arranged vertically to said semiconductor substrates through said through-holes, at least two of said inter-chip electrodes being connected to said power supply lines, at least one other of said inter-chip electrodes being connected to said signal lines and arranged adjacent to, but closely spaced from, at least one of said power supply lines, a respective one of said inter-chip electrodes that is connected to a signal line being between corresponding inter-chip electrodes that are connected to said power supply lines;
an interface semiconductor substrate assembled by being stacked with said multi-layered memory stack and interfacing transmission of signals via the inter-chip electrode connected to said signal lines; and
a plurality of external electrodes electrically connected to said inter-chip electrodes.
3. A semiconductor device of claim 2 wherein said stacked assembly of said multi-layered memory stack and said interface semiconductor substrate further comprises a printed circuit board interposed between said semiconductor substrates.
4. A semiconductor device of claim 2 , wherein said plurality of external electrodes protrudes from the layer at which said interface semiconductor substrate is disposed.
5. A semiconductor memory device comprising:
a multi-layered memory stack of a plurality of semiconductor substrates each including a plurality of memory cells, driver circuits connected to the corresponding memory cells and a pair of power supply lines and a plurality of signal lines correspondingly connected to said memory cells and driver circuits, each of said semiconductor substrates further including a plurality of through-holes crossing the semiconductor substrate in the thickness direction;
inter-chip electrodes arranged in parallel and vertically to said semiconductor substrates through said through-holes, a first group of said inter-chip electrodes being connected to said power supply lines and a second group of said inter-chip electrodes being connected to said signal lines, said second group including at least one inter-chip electrode which is separated from another of the inter-chip electrodes by at least one of said inter-chip electrodes of said first group disposed between the inter-chip electrodes of said second group;
an interface semiconductor substrate assembled by stacking with said multi-layered memory stack and interfacing transmission of signals via the inter*chip electrodes connected to said signal lines; and
a plurality of external electrodes electrically connected to said inter-chip electrodes.
6. A semiconductor memory device comprising:
a multi-layered memory stack of a plurality of semiconductor substrates each including a plurality of memory cells, driver circuits connected to the corresponding memory cells and a pair of power supply lines and a plurality of signal lines correspondingly connected to said memory cells and driver circuits, each of said semiconductor substrates further including a plurality of through-holes crossing the semiconductor substrate in the thickness direction;
inter-chip electrodes arranged in parallel and vertically to said semiconductor substrates through said through-holes, a first group of said inter-chip electrodes being connected to said power supply lines and a second group of said inter-chip electrodes being connected to said signal lines, said second group including at least the inter-chip electrode which is interposed between the inter-chip electrodes of said first group so as to suppress electro-magnetic noise from reaching the inter-chip electrode of the second group;
an interface semiconductor substrate assembled by stacking with said multi-layered memory stack and interfacing transmission of signals via the inter-chip electrodes connected to said signal lines; and
a plurality of external electrodes electrically connected to said inter-chip electrodes.
7. A semiconductor memory device comprising:
multi-layered semiconductor substrates each formed with integrated circuits, a pair of power supply lines, signal lines correspondingly connected to said integrated circuits, and a plurality of through-holes crossing the semiconductor substrate in the thickness direction;
inter-chip electrodes arranged in parallel and vertically to said semiconductor substrates through said through-holes, a first group of said inter-chip electrodes being connected to said power supply lines and a second group of said inter-chip electrodes being connected to signal lines, said second group including at least one inter-chip electrode which is separated from another of the inter-chip electrodes by at least one of said inter-chip electrodes of said first group disposed between the inter-chip electrodes of said second group;
an interface semiconductor substrate assembled by stacking with the stack of said multi-layered semiconductor substrates and interfacing transmission of signals via the inter-chip electrodes connected to said signal lines; and
a plurality of external electrodes electrically connected to said inter-chip electrodes.
8. A semiconductor memory device comprising:
multi-layered semiconductor substrates each formed with integrated circuits, a pair of power supply lines, signal lines correspondingly connected to said integrated circuits, and a plurality of through-holes crossing the semiconductor substrate in the thickness direction;
inter-chip electrodes arranged in parallel and vertically to said semiconductor substrates through said through-holes, a first group of said inter-chip electrodes being connected to said power supply lines and a second group of said inter-chip electrodes being connected to said signal lines, said second group including at least one inter-chip electrode which is interposed between the inter-chip electrodes of said first group so as to suppress electro-magnetic noise from reaching the inter-chip electrode of the second group;
an interface semiconductor substrate assembled by stacking with the stack of said multi-layered semiconductor substrates and interfacing transmission of signals via the inter-chip electrodes connected to said signal lines; and
a plurality of external electrodes electrically connected to said inter-chip electrodes.
9. The semiconductor memory device according to claim 1 , wherein said inter-chip electrodes that are connected to a respective signal line are collinear with inter-chip electrodes that are connected to corresponding power supply lines.
10. The semiconductor memory device according to claim 2 , wherein said inter-chip electrodes that are connected to a respective signal line are collinear with inter-chip electrodes that are connected to corresponding power supply lines.
11. The semiconductor memory device according to claim 5 , wherein said inter-chip electrodes that are connected to a respective signal line are collinear with inter-chip electrodes that are connected to corresponding power supply lines.
12. The semiconductor memory device according to claim 6 , wherein said inter-chip electrodes that are connected to a respective signal line are collinear with inter-chip electrodes that are connected to corresponding power supply lines.
13. The semiconductor memory device according to claim 7 , wherein said inter-chip electrodes that are connected to a respective signal line are collinear with inter-chip electrodes that are connected to corresponding power supply lines.
14. The semiconductor memory device according to claim 8 , wherein said inter-chip electrodes that are connected to a respective signal line are collinear with inter-chip electrodes that are connected to corresponding power supply lines.