RAM memory based on nanotechnology, capable, among other things, of replacing the hard disk in computers

• US 20030218927A1
• Filed: 06/10/2003
• Published: 11/27/2003
• Est. Priority Date: 12/11/2000
• Status: Abandoned Application

• Current Assignee: Al J.C. Baur, Haim Gadassi, Yaron Mayer
• Original Assignee: Al J.C. Baur, Haim Gadassi, Yaron Mayer
• Inventors: Mayer, Yaron, Baur, Al J. C., Gadassi, Haim
• Application Number:
  US10/457,388
• Publication Number:
  US 20030218927A1
• Time in Patent Office: Days
• US Class Current: 365/200
• CPC Class Codes: B82Y 10/00 Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
• CPC Class Codes: G11C 11/34 using semiconductor devices
• CPC Class Codes: G11C 13/025 using fullerenes, e.g. C60, or nanotubes, e.g. carbon or silicon nanotubes
• CPC Class Codes: G11C 2213/71 Three dimensional array
• CPC Class Codes: G11C 2213/81 Array wherein the array conductors, e.g. word lines, bit lines, are made of nanowires

Abstract

As the Internet becomes faster and faster, with more and more demanding applications, and after the problems of faster routing and faster optic fibers are solved, the next main bottleneck will be the speed of the servers, and more specifically the speed (or rather the lack of it) of the hard-disks. Therefore, finding new revolutionary ways of making faster and larger hard-disks and/or larger RAM in the computer itself can help boost the computer and Internet world much faster into the future. The present invention tries to solve the problem of making much faster and much larger preferably non-volatile RAM by Using preferably 3-dimensional addressable preferably nano memory matrices instead of 2-dimensional, so that for example if instead of a 10×10 cm flat surface we have for example a 6×6×1 cm or 3×3×2 cm cube, we can get millions of Terabits, which are millions of times larger than current hard disks. So this can be used for example as computer RAM memory, as a hard-disk, or as a removable cartridge that conveniently fits in the pocket. Many variations are discussed, including memory cells that have more than two states each, and intermediate hybrid systems wherein larger preferably lithographically produced cells are each coupled to one or more nano-chips within them.

Claims

1. A 3-Dimensional Random Access Memory (RAM) system for data storage and retrieval, comprising:

A large number of memory cells, each located at the crossing of at least two wires;

Control circuits for accessing said cells;

External connectors for interface with other devices.

2. The system of claim 1 wherein at least one of the following features exist:

a. Said cells are nano-cells and at least the wires closest to the cells are nano-scale in terms of their thickness and distances from each other.

b. Said cells are normal RAM cells or MRAM (Magnetic RAM cells) but in a multi-layer structure.

c. Between at least some of the layers a heat conducting layer is used.

d. Between at least some of the layers a conducting layer is used which is grounded or carries a small constant DC current.

e. Each time a large number of cells is automatically accessed at the same time in order to increase the efficiency and/or even an entire layer in the 3d matrix can be read or written automatically by a single access.

f. Said cells and wires are in multiple layers of 2-dimensional arrays and at least 2 decoders are used in each layer for accessing the cells and there is at least one decoder or multiplexor for choosing the layer.

g. Said cells and wires are in a 3-dimensional array and at least 3 planes of activation are used to access each cell;

an X plane, a Y plane, and a Z plane, so that the intersection of these planes defines the desired cell.

3. The system of claim 2 wherein said cells and wires are in a 3-dimensional array and at least one of the following features exist:

a. Said planes are defined so that Each X line is electrically connected to the corresponding X lines in the layers above and below it in the 3^rd dimension Z, Each Y line is electrically connected to the corresponding Y lines in the layers above and below it in the 3^rd dimension Z, and each Z line is connected to at least one of independent Y lines and independent X lines in the corresponding Z layer, thus creating said Z plane.

b. At each crossing point of the X-Y-Z planes, there is a cell in which only activating the 3 planes can cause the desired change or read the desired state, by some physical effect that happens only when all the 3 planes are activated nor or at the cell.

c. At each such cell there is a 3-legged AND gate which allows connecting to the cell only if all the 3 planes intersect at that cell.

d. A combination of 3 independent moveable nano elements is used in each cell so that only moving the whole 3 creates an alignment that enables for example changing or reading the cell.

e. The vertical connections that connect each X line to its X plane and each Y line to its Y plane are at the edges of the horizontal layers, so no vertical connections have to be built inside the 3d cube.

4. The system of claim 2 wherein the data is stored in each cell by at least one of:

a. Moving at least one nano-scale object to at least 2 chooseable positions.

b. Changing the shape of at least one nano-scale object in at least 2 chooseable states.

c. Chemical change in at least 2 chooseable states.

d. Electrical change in at least 2 chooseable states.

e. Magnetic change in at least 2 chooseable states.

5. The system of claim 1 wherein the external connectors are comprised of flat shapes on at least one surface of the dimensional memory array and the memory device is kept in place by at least one of:

a. A moving element that can close on it when it is in the matching socket.

b. Small protrusions and/or sockets in various places

c. At least some of said shapes are at least a little sunk into the surface or at least a little protruding, in one or more of the planes, to make sure the cube sits in place.

6. A Random Access Memory (RAM) system for data storage and retrieval based on at least some nano-scale elements, wherein the cells and wires are created by lithography but each cell contains at least a number of nano-scale elements that enable the cell to reliably contain more than 2 values, so that more data can be kept in the same physical space.

7. The system of claim 6 wherein said nano-scale elements are a group of Bucky balls within the memory cell and the non-binary value stored in the cell is based on statistical attributes of the group of Bucky balls.

8. The system of claim 7 wherein the data values in said Bucky balls are changed by at least one of:

a. Adding and removing elements to them.

b. Making chemical changes them.

c. Changing their electrical charges.

d. changing their magnetic charges.

17. The system of claim 6 wherein said cells and said wires are created by lithography but each cell contains at least one of:

a. At least one smaller nano-RAM matrix, internally accessible thorough its own logic, and the cell can tell the inner matrix which inner cells to access, and said inner nano-matrix is at least one of 2-dimensional and 3-dimensional.

b. At least one inner 2-d or 3-d nano-chip that can itself address a large number of inner elements.

19. The system of claim 17 wherein at least one of the following exists:

a. Said inner nano-chip or inner matrix is contacted by giving it the serial number or the coordinates of at least one inner memory cell.

b. Said inner nano-chip or inner matrix behaves as a single cell that can have a very large number of values.

c. Multiple layers of such hybrid memory are stacked upon each other, so that in each layer each normally accessed cell is coupled to one or more nano-chips, and thus the 3rd dimension is also used on the macro level.

9. A 3-Dimensional Random Access Memory (RAM) method for data storage and retrieval, based on the steps of:

Using a large number of memory cells, each located at the crossing of at least two wires;

Using control circuits for accessing said cells;

Using external connectors for interface with other devices.

10. The method of claim 9 wherein at least one of the following features exist:

a. Said cells are nano-cells and at least the wires closest to the cells are nano-scale in terms of their thickness and distances from each other.

b. Said cells are normal RAM cells or MRAM (Magnetic RAM cells) but in a multi-layer structure.

c. Between at least some of the layers a heat conducting layer is used.

d. Between at least some of the layers a conducting layer is used which is grounded or carries a small constant DC current.

e. Each time a large number of cells is automatically accessed at the same time in order to increase the efficiency and/or even an entire layer in the 3d matrix can be read or written automatically by a single access.

f. Said cells and wires are in multiple layers of 2-dimensional arrays and at least 2 decoders are used in each layer for accessing the cells and there is at least one decoder or multiplexor for choosing the layer.

g. Said cells and wires are in a 3-dimensional array and at least 3 planes of activation are used to access each cell;

an X plane, a Y plane, and a Z plane, so that the intersection of these planes defines the desired cell.

11. The method of claim 10 wherein said cells and wires are in a 3-dimensional array and at least one of the following features exist:

a. Said planes are defined so that Each X line is electrically connected to the corresponding X lines in the layers above and below it in the 3^rd dimension Z, Each Y line is electrically connected to the corresponding Y lines in the layers above and below it in the 3^rd dimension Z, and each Z line is connected to at least one of independent Y lines and independent X lines in the corresponding Z layer, thus creating said Z plane.

b. At each crossing point of the X-Y-Z planes, there is a cell in which only activating the 3 planes can cause the desired change or read the desired state, by some physical effect that happens only when all the 3 planes are activated nor or at the cell.

c. At each such cell there is a 3-legged AND gate which allows connecting to the cell only if all the 3 planes intersect at that cell.

d. A combination of 3 independent moveable nano elements is used in each cell so that only moving the whole 3 creates an alignment that enables for example changing or reading the cell.

e. The vertical connections that connect each X line to its X plane and each Y line to its Y plane are at the edges of the horizontal layers, so no vertical connections have to be built inside the 3d cube.

12. The method of claim 10 wherein the data is stored in each cell by at least one of:

a. Moving at least one nano-scale object to at least 2 chooseable positions.

b. Changing the shape of at least one nano-scale object in at least 2 chooseable states.

c. Chemical change in at least 2 chooseable states.

d. Electrical change in at least 2 chooseable states.

e. Magnetic change in at least 2 chooseable states.

13. The method of claim 9 wherein the external connectors are comprised of flat shapes on at least one surface of the 3-dimensional memory array and the memory device is kept in place by at least one of:

a. A moving element that can close on it when it is in the matching socket.

b. Small protrusions and/or sockets in various places

c. At least some of said shapes are at least a little sunk into the surface or at least a little protruding, in one or more of the planes, to make sure the cube sits in place.

14. A Random Access Memory (RAM) method for data storage and retrieval based on at least some nano-scale elements, wherein the cells and wires are created by lithography but each cell contains at least a number of nano-scale elements that enable the cell to reliably contain more than 2 values, so that more data can be kept in the same physical space.

15. The method of claim 14 wherein said nano-scale elements are a group of Bucky balls within the memory cell and the non-binary value stored in the cell is based on statistical attributes of the group of Bucky balls.

16. The method of claim 15 wherein the data values in said Bucky balls are changed by at least one of:

a. Adding and removing elements to them.

b. Making chemical changes them.

c. Changing their electrical charges.

d. changing their magnetic charges.

18. The method of claim 14 wherein said cells and said wires are created by lithography but each cell contains at least one of:

a. At least one smaller nano-RAM matrix, internally accessible thorough its own logic, and the cell can tell the inner matrix which inner cells to access, and said inner nano-matrix is at least one of 2-dimensional and 3-dimensional.

b. At least one inner 2-d or 3-d nano-chip that can itself address a large number of inner elements.

20. The method of claim 18 wherein at least one of the following exists:

a. Said inner nano-chip or inner matrix is contacted by giving it the serial number or the coordinates of at least one inner memory cell.

b. Said inner nano-chip or inner matrix behaves as a single cell that can have a very large number of values.

c. Multiple layers of such hybrid memory are stacked upon each other, so that in each layer each normally accessed cell is coupled to one or more nano-chips, and thus the 3^rd dimension is also used on the macro level.

21. A method for interfacing with a 3-Dimensional chip wherein external connectors are comprised of flat shapes on at least one surface of said 3-dimensional chip is kept in place by at least one of:

a. A moving element that can close on it when it is in the matching socket.

b. Small protrusions and/or sockets in various places

c. At least some of said shapes are at least a little sunk into the surface or at least a little protruding, in one or more of the planes, to make sure the cube sits in place.

22. The method of claim 21 wherein at least one of the following exists:

a. Said chip is a memory chip.

b. Most of the a logic required for running the memory is in the chip itself, so that on the outside there are much less connectors than would be required if the internal memory cells were accessed directly from the outside.

23. A 3-d magnetic nano-RAM wherein at least 3 planes of elongated laser beams are used to access the cells.