摘要:
A semiconductor memory cell, semiconductor memory devices comprising a plurality of the semiconductor memory cells, and methods of using the semiconductor memory cell and devices are described. A semiconductor memory cell includes a substrate having a first conductivity type; a first region embedded in the substrate at a first location of the substrate and having a second conductivity type; a second region embedded in the substrate at a second location of the substrate and have the second conductivity type, such that at least a portion of the substrate having the first conductivity type is located between the first and second locations and functions as a floating body to store data in volatile memory; a trapping layer positioned in between the first and second locations and above a surface of the substrate; the trapping layer comprising first and second storage locations being configured to store data as nonvolatile memory independently of one another, and a control gate positioned above the trapping layer.
摘要:
A method for performing a holding operation to a semiconductor memory array having rows and columns of memory cells, includes: applying an electrical signal to buried regions of the memory cells, wherein each of the memory cells comprises a floating body region defining at least a portion of a surface of the memory cell, the floating body region having a first conductivity type; and wherein the buried region of each memory cell is located within the memory cell and located adjacent to the floating body region, the buried region having a second conductivity type.
摘要:
An integrated circuit including a link or string of semiconductor memory cells, wherein each memory cell includes a floating body region for storing data. The link or string includes at least one contact configured to electrically connect the memory cells to at least one control line, and the number of contacts in the string or link is the same as or less than the number of memory cells in the string or link.
摘要:
Semiconductor memory is provided wherein a memory cell includes a capacitorless transistor having a floating body configured to store data as charge therein when power is applied to the cell. The cell further includes a nonvolatile memory comprising a resistance change element configured to store data stored in the floating body under any one of a plurality of predetermined conditions. A method of operating semiconductor memory to function as volatile memory, while having the ability to retain stored data when power is discontinued to the semiconductor memory is described.
摘要:
A semiconductor memory cell includes a floating body region configured to be charged to a level indicative of a state of the memory cell; a first region in electrical contact with said floating body region; a second region in electrical contact with said floating body region and spaced apart from said first region; a gate positioned between said first and second regions; and a back-bias region configured to inject charge into or extract charge out of said floating body region to maintain said state of the memory cell. Application of back bias to the back bias region offsets charge leakage out of the floating body and performs a holding operation on the cell. The cell may be a multi-level cell. Arrays of memory cells are disclosed for making a memory device.
摘要:
Semiconductor memory having both volatile and non-volatile modes and methods of operation. A semiconductor memory cell includes a substrate, a floating body to store data in volatile memory and a floating gate or trapping layer configured to receive transfer of data stored by the volatile memory and store the data as nonvolatile memory in the floating gate or trapping layer upon interruption of power to the memory cell.
摘要:
Semiconductor memory having both volatile and non-volatile modes and methods of operation. A semiconductor memory cell includes a fin structure extending from a substrate, the fin structure including a floating substrate region having a first conductivity type configured to store data as volatile memory, first and second regions interfacing with the floating substrate region, each of the first and second regions having a second conductivity type; first and second floating gates or trapping layers positioned adjacent opposite sides of the floating substrate region; a first insulating layer positioned between the floating substrate region and the floating gates or trapping layers, the floating gates or trapping layers being configured to receive transfer of data stored by the volatile memory and store the data as nonvolatile memory in the floating gates or trapping layers upon interruption of power to the memory cell; a control gate wrapped around the floating gates or trapping layers and the floating substrate region; and a second insulating layer positioned between the floating gates or trapping layers and the control gate; the substrate including an isolation layer that isolates the floating substrate region from a portion of the substrate below the isolation layer.
摘要:
Semiconductor memory is provided wherein a memory cell includes a capacitorless transistor having a floating body configured to store data as charge therein when power is applied to the cell. The cell further includes a nonvolatile memory comprising a resistance change element configured to store data stored in the floating body under any one of a plurality of predetermined conditions. A method of operating semiconductor memory to function as volatile memory, while having the ability to retain stored data when power is discontinued to the semiconductor memory is described.
摘要:
A semiconductor memory cell and arrays of memory cells are provided In at least one embodiment, a memory cell includes a substrate having a top surface, the substrate having a first conductivity type selected from a p-type conductivity type and an n-type conductivity type; a first region having a second conductivity type selected from the p-type and n-type conductivity types, the second conductivity type being different from the first conductivity type, the first region being formed in the substrate and exposed at the top surface; a second region having the second conductivity type, the second region being formed in the substrate, spaced apart from the first region and exposed at the top surface; a buried layer in the substrate below the first and second regions, spaced apart from the first and second regions and having the second conductivity type; a body region formed between the first and second regions and the buried layer, the body region having the first conductivity type; a gate positioned between the first and second regions and above the top surface; and a nonvolatile memory configured to store data upon transfer from the body region.
摘要:
A split gate NAND flash memory structure is formed on a semiconductor substrate of a first conductivity type. The NAND structure comprises a first region of a second conductivity type and a second region of the second conductivity type in the substrate, spaced apart from the first region, thereby defining a channel region therebetween. A plurality of floating gates are spaced apart from one another and each is insulated from the channel region. A plurality of control gates are spaced apart from one another, with each control gate insulated from the channel region. Each of the control gate is between a pair of floating gates and is capacitively coupled to the pair of floating gates. A plurality of select gates are spaced apart from one another, with each select gate insulated from the channel region. Each select gate is between a pair of floating gates.