摘要:
A transistor using a physical property-changing layer, a method of operating the transistor, and a method of manufacturing the transistor are provided. The transistor may include an insulation layer formed on a substrate, the first and second conductive layer patterns, the physical property-changing layer, a dielectric layer, for example, a high dielectric layer, and a gate electrode. The first and second conductive layer patterns may be spaced apart from each other on the insulation layer. The physical property-changing layer may be formed on a portion of the insulation layer between the first and second conductive layer patterns. The dielectric layer may be stacked on the physical property-changing layer and the gate electrode may be formed on the high dielectric layer.
摘要:
An electron beam lithography apparatus for providing one-to-one or x-to-one projection of a pattern includes a pyroelectric emitter, which is disposed a predetermined distance apart from a substrate holder, the pyroelectric emitter including a pyroelectric plate having a dielectric plate on a surface thereof and a patterned semiconductor thin film on the dielectric plate facing the substrate holder, a heating source for heating the pyroelectric emitter, and either a pair of magnets disposed beyond the pyroelectric emitter and the substrate holder, respectively, or a deflection unit disposed between the pyroelectric emitter and the substrate holder, to control paths of electrons emitted by the pyroelectric emitter. In operation, when the pyroelectric emitter is heated in a vacuum, electrons are emitted from portions of the pyroelectric plate that are not covered by the patterned semiconductor thin film.
摘要:
A memory device including a single transistor having functions of RAM and ROM and methods for operating and manufacturing the same are provided. The memory device includes a single transistor formed on a substrate. The transistor may be a memory transistor having a gate with a nonvolatile memory element, or the nonvolatile memory element is provided between the transistor and the substrate.
摘要:
An emitter for an electron-beam projection lithography (EPL) system and a manufacturing method therefor are provided. The electron-beam emitter includes a substrate, an insulating layer overlying the substrate, and a gate electrode including a base layer formed on top of the insulating layer to a uniform thickness and an electron-beam blocking layer formed on the base layer in a predetermined pattern. The manufacturing method includes steps of: preparing a substrate; forming an insulating layer on the substrate; forming a base layer of a gate electrode by depositing a conductive metal on the insulating layer to a predetermined thickness; forming an electron-beam blocking layer of the gate electrode by depositing a metal capable of anodizing on the base layer to a predetermined thickness; and patterning the electron-beam blocking layer in a predetermined pattern by anodizing. The emitter provides a uniform electric field within the insulating layer and simplify the manufacturing method therefor.
摘要:
A single transistor type magnetic random access memory device and a method of operating and manufacturing the same, wherein the single transistor type magnetic random access memory device includes a substrate, first and second doped regions spaced apart from each other, a gate dielectric layer on a portion of the semiconductor substrate between the first and second doped regions, a magnetic tunnel junction on the gate dielectric layer, word lines on the magnetic tunnel junction extending in a first direction which is the same direction as the second doped region, bit lines connected to the first doped region in a second direction perpendicular to the first direction, and an insulating layer covering the gate dielectric layer, the magnetic tunnel junction, and the word lines. The single transistor type magnetic random access memory device has a simple circuit structure, has a prolonged lifetime and is easy to manufacture.
摘要:
A memory device having one transistor and one resistant element as a storing means and a method for driving the memory device, includes an NPN-type transistor formed on a semiconductor substrate, an interlayer insulating film formed on the semiconductor substrate to cover the transistor in which a contact hole exposing a source region of the transistor is formed, a resistant material in which a bit data “0” or “1” is written connected to the source region of the transistor by a conductive plug or an insulating film, and a conductive plate contacting the resistant material. The memory device exhibits improved degree of integration, reduced current consumption by lengthening a refresh period thereof, and enjoys simplified manufacturing process due to a simple memory cell structure.
摘要:
An optical element and an information storage device including the same. The optical element may include an optical waveguide structure for transforming circularly polarized light into plasmon and transmitting the plasmon. The optical waveguide structure may emit a circularly polarized plasmonic field. The optical element may be used in an information storage device. For example, the information storage device may include a recording medium and a recording element for recording information on the recording medium, and the recording element may include the optical element. The information may be recorded on the recording medium by using the circularly polarized plasmonic field generated by the optical element.
摘要:
The non-volatile memory device may include a substrate, a plurality of first signal lines on the substrate in a vertical direction, a plurality of memory cells having ends connected to the plurality of first signal lines, a plurality of second signal lines perpendicular to the plurality of first signal lines on the substrate and each connected to other ends of the plurality of memory cells, and a plurality of selection elements on the substrate and connected to at least two of the plurality of first signal lines.
摘要:
A nonvolatile memory cell may include a bidirectional switch having a first threshold voltage when a forward current is applied to the bidirectional switch and a second threshold voltage when a reverse current is applied to the bidirectional switch; and a variable resistor connected to the bidirectional switch in series. A state of resistance of the variable resistor may be controlled according to voltage applied to the variable resistor. A sum of a magnitude of the first threshold voltage and a magnitude of the second threshold voltage may be greater than a write voltage that is used to perform a write operation on the variable resistor.
摘要:
A nonvolatile memory device including one transistor and one resistant material and a method of manufacturing the nonvolatile memory device are provided. The nonvolatile memory device includes a substrate, a transistor formed on the substrate, and a data storage unit connected to a drain of the transistor. The data storage unit includes a data storage material layer having different resistance characteristics in different voltage ranges.