Ememory Technology Inc.

Tsung-Mu Lai

Chih-Hsin Chen

Shih-Chen Wang

Wen-Hao Ching

Wei-Chen Chang

Chun-Yuan Lo

Chen-Hao Po

Chun-Fu Lin

Shao-Chang Huang

Chun-Hsiao Li

Chun-Chieh Chao

Wei-Ren Chen

Chia-Jung Hsu

Ming-Chou Ho

Ching-Yuan Lin

Hung-Hsiang Wang

Hsueh-Wei Chen

Cheng-Te Yang

Chun-Hung Lu

Wei-Yao Lin

Cheng-Yen Shen

I-Lang Lin

Meng-Chiuan Wu

A memory cell of a charge-trapping non-volatile memory is provided. The memory cell is formed on a well region of a semiconductor substrate. The memory cell includes a storage transistor. A gate structure of the storage transistor includes a first tunneling layer, a second tunneling layer, a trapping layer, a blocking layer and a gate layer. The first tunneling layer is contacted with a surface of the well region. The second tunneling layer covers the first tunneling layer. The trapping layer covers the second tunneling layer. The blocking layer covers the trapping layer. The gate layer covers the blocking layer. The second tunneling layer has gradient nitrogen distribution. A first nitrogen concentration of a first region of the second tunneling layer close to the first tunneling layer is lower than a second nitrogen concentration of a second region of the second tunneling layer close to the trapping layer.

Memory cell of charge-trapping non-volatile memory

A manufacturing method for a nonvolatile charge-trapping memory apparatus is provided. During the manufacturing process of the nonvolatile memory apparatus, a blocking layer of a storage device is effectively protected. Consequently, the blocking layer is not contaminated or thinned. Moreover, since the well regions of the logic device area and the memory device area are not simultaneously fabricated, it is feasible to fabricate small-sized nonvolatile memory cell in the memory device area and precisely control the threshold voltage of the charge trapping transistor.

Manufacturing method for nonvolatile charge-trapping memory apparatus

A cell array structure includes a first resistive memory cell. The first resistive memory cell includes a well region, a first doped region, a merged region, a first gate structure, a second gate structure and a first metal layer. The first doped region is formed under a surface of the well region. The merged region is formed under the surface of the well region. The first gate structure is formed over the surface of the well region between the first doped region and the merged region. The first gate structure includes a first insulation layer and a first conductive layer. The second gate structure is formed over the merged region. The second gate structure includes a second insulation layer and a second conductive layer. The first metal layer is connected with the first doped region.

Resistive memory cell and associated cell array structure

A forming control method for a resistive random-access memory cell array is provided. While a forming action of the resistive random-access memory cell array is performed, a verification action is performed to judge whether the forming action on the resistive random-access memory cells has been successfully done. By properly changing a forming voltage or a pulse width, the forming actions on all of the resistive random-access memory cells of the resistive random-access memory cell array can be successfully done.

Forming control method applied to resistive random-access memory cell array

A random code generating method for the magnetoresistive random access memory is provided. Firstly, a first magnetoresistive random access memory cell and a second magnetoresistive random access memory cell are programmed into an anti-parallel state. Then, an initial value of a control current is set. Then, an enroll action is performed on the first and second magnetoresistive random access memory cells. If the first and second magnetoresistive random access memory cells fail to pass the verification action, the control current is increased by a current increment, and the step of setting the control current is performed again. If the first and second magnetoresistive random access memory cells pass the verification action, a one-bit random code is stored in the first magnetoresistive random access memory cell or the second magnetoresistive random access memory cell.

Magnetoresistive random access memory for physically unclonable function technology and associated random code generating method

A switch device includes a P-type substrate, a first gate structure, a first N-well, a shallow trench isolation structure, a first P-well, a second gate structure, a first N-type doped region, a second P-well, and a second N-type doped region. The first N-well is formed in the P-type substrate and partly under the first gate structure. The shallow trench isolation structure is formed in the first N-well and under the first gate structure. The first P-well is formed in the P-type substrate and under the first gate structure. The first N-type doped region is formed in the P-type substrate and between the first gate structure and the second gate structure. The second P-well is formed in the P-type substrate and under the second gate structure. The second N-type doped region is formed in the second P-well and partly under the second gate structure.

High voltage switch device

A resistive random-access memory cell includes a well region, a first doped region, a second doped region, a third doped region, a first gate structure, a second gate structure and a third gate structure. The first gate structure is formed over the surface of the well region between the first doped region and the second doped region. The second gate structure is formed over the second doped region. The third gate structure is formed over the surface of the well region between the second doped region and the third doped region. A first metal layer is connected with the first doped region and the third doped region. A second metal layer is connected with the conductive layer of the first gate structure and the conductive layer of the third gate structure.

Resistive random-access memory cell and associated cell array structure

A random code generator includes a differential cell array, a power supply circuit, a first selecting circuit and a current judgment circuit. The power supply circuit receives an enrolling signal and a feedback signal. The first selecting circuit receives a first selecting signal. When the enrolling signal is activated and an enrollment is performed on the first differential cell, the power supply circuit provides an enrolling voltage, and the enrolling voltage is transmitted to a first storage element and a second storage element of the first differential cell through the first selecting circuit. Consequently, the cell current is generated. When a magnitude of the cell current is higher than a specified current value, the current judgment circuit activates the feedback signal, so that the power supply circuit stops providing the enrolling voltage.

Random code generator with non-volatile memory

A memory cell array of a multi-time programmable non-volatile memory includes plural memory cells. The memory cell has the structure of 1T1C cell, 2T1C cell or 3T1C cell. Moreover, the floating gate transistors of the memory cells in different rows of the memory cell array are constructed in the same well region. Consequently, the chip size is reduced. Moreover, by providing proper bias voltages to the memory cell array, the program action, the erase action or the read action can be performed normally.

Memory cell array of multi-time programmable non-volatile memory

A multi-cell per bit nonvolatile memory (NVM) unit includes a select transistor disposed on a first oxide define (OD) region, a word line transistor disposed on the first OD region, and serially connected floating gate transistors disposed between the select transistor and the word line transistor. A first floating gate extension continuously extends toward a second OD region and adjacent to an erase gate region. A second floating gate extension continuously extends toward a third OD region and is capacitively coupled to a control gate region. A channel length of each of the floating gate transistors is shorter than that of the select transistor or the word line transistor.

Multi-cell per bit nonvolatile memory unit

A near-memory computation system includes a plurality of computation nodes. Each computation node receives a plurality of input signals and outputs a computing result signal. The computation node includes a plurality of non-volatile memory cells and a processing element. Each non-volatile memory cell stores a weighting value during a program operation and outputs a weighting signal according to the weighting value during a read operation. The processing element is coupled to the plurality of non-volatile memory cells. The processing element receives the plurality of input signals and generates the computing result signal by performing computations with the plurality of input signals and a plurality of weighting signals generated by the plurality of non-volatile memory cells. The plurality of non-volatile memory cells and the processing element are manufactured by different or the same processes.

Near-memory computation system for analog computing

A non-volatile memory cell includes a storage transistor having a first terminal, a second terminal, and a gate terminal. During a program operation, the first terminal of the storage transistor receives a data voltage according to a weighting to be stored in the non-volatile memory cell, the second terminal of the storage transistor is floating, and the gate terminal of the storage transistor is coupled to a program voltage. The program voltage is greater than the data voltage.

Non-volatile memory cell compliant to a near memory computation system

A random bit cell includes a latch and a nonvolatile memory cell. The nonvolatile memory cell includes a storage circuit, a control element, an erase element, and a read circuit. The storage circuit is coupled to a first terminal of the latch. The storage circuit includes a floating gate transistor having a first terminal, a second terminal, and a floating gate. The control element has a first terminal coupled to a control line, and a control terminal coupled to the floating gate of the floating gate transistor. The erase element has a first terminal coupled to an erase line, and a control terminal coupled to the floating gate of the floating gate transistor. The read circuit is coupled to a bit line, a select gate line, and the floating gate of the floating gate transistor.

Random bit cell with nonvolatile memory cell

A memory array includes a plurality of memory pages, each memory page includes a plurality of memory cells, and each memory cell includes a floating gate module, a control element, and an erase element. The floating gate module is disposed in a first well, the erase element is disposed in a second well, and the control element is disposed in a third well. The first well, the second well and the third well are disposed in a deep doped region, and memory cells of the plurality of memory pages are all disposed in the deep doped region. Therefore, the spacing rule between deep doped regions is no longer be used to limit the circuit area of the memory array and the circuit area of the memory array can be reduced.

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Hsinchu County, Taiwan

Tsung-Mu Lai