摘要:
In a method of programming a non-volatile memory device, a first voltage is applied to a selected word line corresponding to a selected memory cell transistor of a selected transistor string to be programmed; a second voltage is applied to a neighboring word line neighboring the selected word line and corresponding to a neighboring transistor of the selected transistor string, wherein the first voltage is greater than the second voltage, the application of the first and second voltages to the selected and neighboring word lines respectively causing electrons to be generated by an electric field formed between the neighboring transistor and the selected memory cell transistor, the electrons accelerating toward the selected memory cell transistor and injecting into a charge storage layer of the selected memory cell transistor; wherein the neighboring transistor is positioned between the selected memory cell transistor and one of a ground select transistor and a string select transistor, and the first voltage is applied to unselected word lines corresponding to unselected memory cell transistors of the selected transistor string positioned between the selected memory cell transistor and the other of the ground select transistor and the string select transistor.
摘要:
A semiconductor device and method for arranging and manufacturing the same are disclosed. The semiconductor device includes a plurality of inverters including at least one first pull-up transistor and first pull-down transistor and inverting and outputting an input signal, respectively; and a plurality of NAND gates including at least two second pull-up transistor and second pull-down transistor and generating an output signal having a high level if at least one of at least two input signals has a low level, respectively, wherein the at least one first pull-up transistor and first pull-down transistor and the at least two second pull-up transistor and second pull-down transistor are stacked and arranged on at least two layers.
摘要:
A non-volatile memory device includes first and second strings memory cell transistors, related first and second word lines respectively connected to gates of the first string memory cell transistors, wherein respective first and second word lines are connected to commonly receive a bias voltage. The non-volatile memory device also includes dummy cell transistors connected to the first and second strings, and first and second dummy word lines configured to receive different bias voltages.
摘要:
In multiple-layered memory devices, memory systems employing the same, and methods of forming such devices, a second memory device layer on a first memory device layer comprises a second substrate including a second memory cell region. The second substrate includes only a single well in the second memory cell region, the single well of the second memory cell region comprising a semiconducting material doped with impurity of one of a first type and second type. The single well defines an active region in the second memory cell region of the second substrate. Multiple second cell strings are arranged on the second substrate in the second active region. Although the second memory cell region includes only a single well, during a programming or erase operation of the memory cells of the second layer, requiring a high voltage to be applied to the single well in the substrate of the second layer, the high voltage will not interfere with the operation of the peripheral transistors of the first layer, second layer, or other layers, since they are isolated from each other. As a result, the substrate of the second layer can be prepared to have a thinner profile, and with fewer processing steps, resulting in devices with higher-density, greater reliability, and reduced fabrication costs.
摘要:
Provided is a semiconductor device having transistors of stacked structure. The semiconductor memory device having transistors includes a memory cell array block which includes a plurality of word lines and a plurality of memory cells which each includes at least one first transistor connected between the plurality of word lines, and a word line decoder which includes a plurality of drivers which drive the plurality of word lines, respectively, wherein a plurality of word lines are disposed on a first layer, and a plurality of drivers are disposed on at least two second layers.
摘要:
Disclosed are a flash memory device and method of operation. The flash memory device includes a bottom memory cell array and a top memory cell array disposed over the bottom memory cell array. The bottom memory cell array includes a bottom semiconductor layer, a bottom well, and a plurality of bottom memory cell units. The top memory cell array includes a top semiconductor layer, a top well, and a plurality of top memory cell units. A well bias line is disposed over the top memory cell array and includes a bottom well bias line and a top well bias line, The bottom well bias line is electrically connected to the bottom well, and the top well bias line is electrically connected to the top well.
摘要:
On embodiment of a contact structure may include a lower insulation layer on a lower substrate, an upper substrate on the lower insulation layer, a groove penetrating the upper substrate to extend into the lower insulation layer, the groove below an interface between the upper substrate and the lower insulation layer, an upper insulation layer in the groove, and a contact plug penetrating the upper insulation layer in the groove to extend into the lower insulation layer.
摘要:
A semiconductor memory device including a memory cell array, a first row decoder adjacent the memory cell array, and a second row decoder adjacent the memory cell array. A memory cell array may include first and second memory cell blocks on respective first and second semiconductor layers. The first memory cell block may include a first word line coupled to a first row of memory cells on the first semiconductor layer, the second memory cell block may include a second word line coupled to a second row of memory cells on the second semiconductor layer, and the first word line may be between the first and second semiconductor layers. The first row decoder may be configured to control the first word line, and the second row decoder may be configured to control the second word line. A first wiring may electrically connect the first row decoder and the first word line, and a second wiring may electrically connect the second row decoder and the second word line.
摘要:
A NAND-type nonvolatile memory device includes a semiconductor substrate and a first ground selection line and a first string selection line disposed on the substrate in parallel to each other. A plurality of parallel first word lines are interposed on the substrate between the first ground selection line and the first string selection line. A first impurity-doped region is formed in the semiconductor substrate adjacent to the first word lines, the first ground selection line, and the first string selection line. A first interlayer dielectric layer is disposed on the first ground selection line, the first string selection line, the plurality of first word lines, and the semiconductor substrate. An epitaxial contact plug contacts the semiconductor substrate through the first interlayer dielectric layer. A single crystalline semiconductor layer is disposed on the first interlayer dielectric layer that contacts the epitaxial contact plug. A plurality of parallel second word lines is disposed on the single crystalline semiconductor layer. A second impurity-doped region formed in the single crystalline semiconductor layer adjacent to the second word lines. A second interlayer dielectric layer is disposed on the plurality of second word lines and the single crystalline semiconductor layer.
摘要:
A NAND flash memory device includes a lower semiconductor layer and an upper semiconductor layer located over the lower semiconductor layer, a first drain region and a first source region located in the lower semiconductor layer, and a second drain region and a second source region located in the upper semiconductor layer. A first gate structure is located on the lower semiconductor layer, and a second gate structure is located on the upper semiconductor layer. A bit line is located over the upper semiconductor layer, and at least one bit line plug is connected between the bit line and the first drain region, where the at least one bit line plug extends through a drain throughhole located in the upper semiconductor layer.