National Yang Ming Chiao Tung University

Taiwan Semiconductor Manufacturing Comp. Ltd.

E-Ray Hsieh

Steve S Chung

Samuel C Pan

Zhi-Hong Huang

Yu-Bin Zhao

Yi-Hsien Lin

A first memory unit includes a first bipolar-variable-resistance and a first control transistor. This first memory unit is configured to provide a function of a flash memory with first bipolar-variable-resistance transistor serving as a storage. In addition, a second bipolar-variable-resistance transistor and a second control transistor with the same structure as first memory unit can be used to serve as a second memory unit. An isolation transistor is connected between the first memory unit and the second memory unit. The isolation transistor can electrically isolate the first memory unit and the second memory unit from each other, thereby preventing sneak current from flowing between arrays among memory circuits.

Nonvolatile memory comprising variable resistance transistors and method for operating the same

One time programming and repeatably random read integrated circuit memory has a storage device that programs the information by using dielectric-fuse mechanism. The main characteristics of dielectric fuse mechanisms is that by applying an electric field on the dielectrics, the ions or atoms in the dielectrics are drifted-out, or the dielectrics are burned-out, that create damage of the dielectric structure in a form of porosity, and the conductivity (resistivity) of tunneling current through the dielectrics changes the state from high conductivity (resistivity) to low conductivity (resistivity). The dielectric fuse mechanism has been integrated in VLSI circuits, completed the validation, and implemented by the fabrication of CMOS process.

Dielectric fuse memory circuit and operation method thereof

Structures and formation methods of a semiconductor device structure are provided. The semiconductor device structure includes a source structure at least partially in a semiconductor substrate. The semiconductor device structure also includes a channel structure over the semiconductor substrate. The source structure is partially covered by the channel structure. The semiconductor device structure further includes a drain structure covering the channel structure. The drain structure and the source structure have different conductivity types. A portion of the channel structure is sandwiched between the source structure and the drain structure. In addition, the semiconductor device structure includes a gate stack partially covering the channel structure.

Structure and formation method of semiconductor device structure

Structures and formation methods of a semiconductor device structure are provided. The semiconductor device structure includes a source structure in a semiconductor substrate. The semiconductor device structure also includes a channel layer over the semiconductor substrate. A first portion of the channel layer covers a portion of the source structure. A second portion of the channel layer laterally extends away from the source structure. The semiconductor device structure further includes a drain structure over the semiconductor substrate. The drain structure and the source structure have different conductivity types. The drain structure adjoins the second portion of the channel layer.

A high density NAND-type nonvolatile resistance random access storage circuit and its operations are shown herein . A unit memory cell of the circuit includes a field effect transistor (FET) with a resistance changeable component connected to its gate electrode. The field effect transistor is an n-channel field effect transistor or a p-channel field effect transistor. By applying the voltage or current between the top electrode of the resistive random access component and the FET drain or source electrode, more than two stable states can be maintained such that these states can be drawn from the FET drain or source terminal. The NAND circuit includes the above unit cell as a center to form a multi-bit memory. The circuit consists of multi-bit memories connected in series, has a NAND logic gate function, and forms output of this NAND circuit which can be drawn in a form of series output.

NAND type variable resistance random access memory and methods

A memory cell and the associated array circuits are disclosed. The memory array circuit includes a plurality of memory units, in which each of the memory units includes a storage device and a field-effect transistor. The storage device includes a top electrode, a bottom electrode and an oxide-based dielectric layer. The top electrode is formed by metal or metallic oxide dielectrics and connected to a word line. The bottom electrode is formed by metal, and the oxide-based dielectric layer is placed between the top electrode and the bottom electrode. The field-effect transistor includes a gate terminal connected to the bottom electrode, a source terminal connected to a ground line, and a drain terminal connected to a bit line. The resistance of the storage device is configured to be adjusted according to a first voltage applied to the word line and a second voltage applied to the bit line.

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Kaohsiung, Taiwan

E-Ray Hsieh