Macronix International Co., Ltd.

United Microelectronics Corp.

Tien-Fan Ou

Wen-Jer Tsai

Jyun-Siang Huang

Lit-Ho Chong

Chien-Hung Liu

Chih-Wei Lee

Chun-Lung Chang

The present invention provides a non-volatile memory device, including a source region and a drain region, a channel region, a floating gate, an enhance hot carrier (hole or electron) injection gate and an erasing gate. The floating gate is disposed on the channel region and the source region and a first dielectric layer is disposed therebetween. The enhance hot carrier injection gate is disposed on the floating gate and the substrate wherein the enhance hot carrier injection gate has an L-shape cross-section. A second dielectric layer is disposed between the enhance hot carrier injection gate and the floating gate, and a fourth dielectric layer is disposed between the enhance hot carrier injection gate and the substrate. The erasing gate is disposed on the drain region. A third dielectric layer is disposed between the erasing gate and the substrate.

Non-volatile memory device and operation method thereof

An integrated circuit comprises a memory array including diffusion bit lines having composite impurity profiles in a substrate. A plurality of word lines overlies channel regions in the substrate between the diffusion bit lines, with data storage structures such as floating gate structures or dielectric charge trapping structures, at the cross-points. The composite impurity diffusion bit lines provide source/drain terminals on opposing sides of the channel regions that have high conductivity, good depth and steep doping profiles, even with channel region critical dimensions below 50 nanometers.

Composite impurity scheme for memory technologies

An integrated circuit includes a memory cell structure including a first cell and a second cell. The first cell includes a first storage structure and a first gate over a substrate. The first gate is over the first storage structure. The second cell includes a second storage structure and a second gate over the substrate. The second gate is over the second storage structure. The first gate is separated from the second gate. A first doped region is adjacent to the first cell and is coupled to a first source. A second doped region is configured within the substrate and adjacent to the second cell. The second doped region is coupled to a second source. At least one third doped region is between the first cell and the second cell, wherein the third doped region is floating.

Operation methods for memory cell and array thereof immune to punchthrough leakage

An integrated circuit includes a memory array having a plurality of memory cells arranged in rows and columns, each memory cell including two doped regions and a channel region therebetween, each pair of adjacent memory cells sharing a common doped region, each memory cell having a charge storage member over the channel region and a control gate over the charge storage member. A first word line is coupled to the memory cells in the same row, each of the memory cells designated as the Nth memory cell. Each of a plurality of bit lines is designated as the Nth bit line, the Nth bit line coupled to a doped region shared by the Nth memory cell and the (N&#x2212;)th memory cell. The integrated circuit also has a plurality of global bit lines, each of which coupled to two of the bit lines via a switch.

Operation methods for memory cell and array for reducing punch through leakage

The invention provides a memory array. The memory array comprises a substrate, a plurality of word lines, a charge trapping structure, a plurality of trench channels and a plurality of bit lines. The word lines are located over the substrate and the word lines are parallel to each other. The charge trapping structure covers a surface of each of the word lines. The trench channels are located over the substrate and the word lines and the trench channels are alternatively arranged and each trench channel is separated from the adjacent word lines by the charge trapping structure. The bit lines are located over the word lines and each bit line is across over each of the word lines and each trench channel is electrically coupled to the bit lines.

Memory array and method for manufacturing and operating the same

A method for programming a first memory cell in a memory array. In a specific embodiment, each memory cell has a drain, a source, a channel, and a control gate overlying a charge storage material and the channel. The source of the first memory cell is coupled to the drain of a second memory cell. A voltage is applied to the drain of the first memory cell, and the source of the second memory cell is grounded. The method includes floating the drain of the second memory cell and the source of the first memory cell and turning on the channels of the first and second memory cells, effectively forming an extended channel region. Hot carriers are injected to the charge storage material of the first cell to program the first memory cell. The extended channel lowers electrical fields and reduces punch through leakage in unselected memory cells.

A gated diode nonvolatile memory cell with a charge storage structure includes a diode structure with an additional gate terminal. Adjacent memory devices are electrically isolated. Example embodiments include the individual memory cell, an array of such memory cells, methods of operating the memory cell or array of memory cells, and methods of manufacturing the same.

Electrically isolated gated diode nonvolatile memory

A memory apparatus, a controller, and a method thereof for programming non-volatile memory cells are provided. The memory apparatus includes a plurality of memory cells, wherein each memory cell shares a source/drain region with a neighboring memory cell. The method utilizes a compensation electron flow applied into a source/drain region between two memory cells to provide enough electron flow to program one of the two memory cells, even under the circumstances that the other memory cell has a greater threshold voltage, such that the dispersion of the programming speed of the memory cells is reduced.

Memory apparatus and method thereof for operating memory

A manufacturing method of a vertical non-volatile memory is provided. A first semiconductor layer, a first barrier, a second semiconductor layer, a second barrier and a third semiconductor layer are formed on a substrate sequentially. The first and the third semiconductor layers have a first conductive state, while the second semiconductor layer has a second conductive state. Several strips of active stacked structures are formed by removing portions of the first, second and third semiconductor layers, and portions of the first and second barrier on the substrate. After forming a storage structure on the substrate, the storage structure is covered with a conductive layer filling spaces among the active stacked structures. A portion of the conductive layer is removed to form word lines across the active stacked structures.

Growing community of inventors

Taipei, Taiwan

Tien-Fan Ou