Abstract: A semiconductor memory device and method of making the same are disclosed. The semiconductor memory device includes a substrate that includes a memory region and a peripheral region, a transistor including a metal gate located in the peripheral region, a composite dielectric film structure located over the metal gate of the transistor, the composite dielectric film structure including a first dielectric layer and a second dielectric layer over the first dielectric layer, where the second dielectric layer has a greater density than a density of the first dielectric layer, and at least one memory cell located in the memory region. The composite dielectric film structure provides enhanced protection of the metal gate against etching damage and thereby improves device performance.

Abstract: A semiconductor memory device and method of making the same are disclosed. The semiconductor memory device includes a substrate that includes a memory region and a peripheral region, a transistor including a metal gate located in the peripheral region, a composite dielectric film structure located over the metal gate of the transistor, the composite dielectric film structure including a first dielectric layer and a second dielectric layer over the first dielectric layer, where the second dielectric layer has a greater density than a density of the first dielectric layer, and at least one memory cell located in the memory region. The composite dielectric film structure provides enhanced protection of the metal gate against etching damage and thereby improves device performance.

Abstract: A semiconductor die can include an alternating stack of insulating layers and electrically conductive layers located on a substrate, memory stack structures extending through the alternating stack, drain regions located at a first end of a respective one of the vertical semiconductor channels of a memory stack structure, and bit lines extending over the drain regions and electrically connected to a respective subset of the drain regions. At least of a subset of the bit lines includes bump-containing bit lines. Each of the bump-containing bit lines includes a line portion and a bump portion that protrudes upward from a top surface of the line portion by a bump height. Bit line contact via structures overlie the bit lines and contact a bump portion of a respective one of the bump-containing bit lines.

Abstract: A method of making a semiconductor structure can include: (i) forming a plurality of oxide layers on a semiconductor substrate; (ii) forming a plurality of conductor layers on the plurality of oxide layers; (iii) forming plurality of thickening layers on the plurality of conductor layers; (iv) patterning the plurality of conductor layers and the plurality of thickening layers to form a hard mask; and (v) implanting ion using the hard mask to form a plurality of doped regions.

Abstract: A semiconductor structure and a method for forming the same are provided. The semiconductor structure includes a substrate and a fin structure formed over the substrate. The semiconductor structure further includes an isolation structure formed around the fin structure and a gate structure formed across the fin structure. In addition, the gate structure includes a first portion formed over the fin structure and a second portion formed over the isolation structure, and the second portion of the gate structure includes an extending portion extending into the isolation structure.

Abstract: When a memory cell (MC) is downsized by reducing the distance between a drain region (12a) and a source region (12b) on the surface of a fin (S2) with a high impurity concentration inside the fin (S2), the shape of the fin (S2) can be set such that a potential difference between a memory gate electrode (MG) and the fin (S2) is reduced to suppress the occurrence of disturbance. Accordingly, the memory cell (MC) achieves downsizing and suppression of the occurrence of disturbance.

Abstract: A thin film transistor including a substrate; a semiconductor layer disposed over the substrate; a gate insulting film disposed over the semiconductor layer; and a gate electrode. The semiconductor layer includes a channel region, a source region, and a drain region. The gate insulating film includes a first region and a second region. The second region borders the first region. The gate electrode is disposed over the first region. A step shape is formed where the second region meets the first region.

Abstract: A semiconductor device is obtained in which a first insulating film for a gate insulating film of a memory element is formed over a semiconductor substrate in a memory region, a second insulating film for a gate insulating film of a lower-breakdown-voltage MISFET is formed over the semiconductor substrate in a lower-breakdown-voltage MISFET formation region, and a third insulating film for a gate insulating film of a higher-breakdown-voltage MISFET is formed over the semiconductor substrate in a higher-breakdown-voltage MISFET formation region. Subsequently, a film for gate electrodes is formed and then patterned to form the respective gate electrodes of the memory element, the lower-breakdown-voltage MISFET, and the higher-breakdown-voltage MISFET. The step of forming the second insulating film is performed after the step of forming the first insulating film. The step of forming the third insulating film is performed before the step of forming the first insulating film.

Abstract: A semiconductor apparatus includes a semiconductor chip, with the semiconductor chip including a modular region and a test circuit. The modular region includes a plurality of modular areas each including a memory cell array with redundant bit lines and a peripheral memory area storing at least redundant addresses. The test circuit retrieves the redundant addresses intrinsic to the semiconductor chip. The distribution of the redundant addresses is randomly formed related to a part or an entirety of the modular area of the modular region. The distribution of the retrieved redundant addresses is irreversible, with a random number representing physical properties intrinsic to the semiconductor chip and providing copy protection. When another semiconductor chip uses the distribution of the retrieved redundant addresses the another semiconductor chip will malfunction.

Abstract: In an embodiment, a method comprises: forming a fin feature on a portion of a surface of a substrate; forming a first region of polycrystalline silicon over a first portion of the fin feature; forming a second region of polycrystalline silicon over a second portion of the fin feature; forming a third region of polycrystalline silicon over a third portion of the fin feature, wherein the third region of polycrystalline silicon is disposed between (i) the first region and (ii) the second region; forming a first spacer region between the first region and the third region; forming a second spacer region between the second region and the third region; removing the third region and at least a portion of the fin feature formed under the third region to thereby form a gap; and disposing a second dielectric material into the gap to form an isolation component.

Abstract: Memory cells and fabrication methods thereof are provided. An exemplary method includes providing a substrate having a well region; forming a select gate structure, a floating gate structure and a dummy gate structure on a surface of the well region; forming a first lightly doped region, a second lightly doped region and a third lightly doped region in the well region, the first lightly doped region and the second lightly doped region being at two sides of the select gate structure respectively, the second lightly doped region being in between the select gate structure and the floating gate structure, and the third lightly doped region being in between the floating gate structure and the dummy gate structure; and forming bit line region in the first lightly doped region and a source region in the third lightly doped region, the source region being enclosed by the third lightly doped region.

Abstract: The present invention further provides a method for forming a semiconductor device, comprising: first, a substrate having a fin structure disposed thereon is provided, wherein the fin structure has a trench, next, a first liner in the trench is formed, a first insulating layer is formed on the first liner, afterwards, a shallow trench isolation is formed in the substrate and surrounding the fin structure, wherein a bottom surface of the shallow trench isolation is higher than a bottom surface of the first insulating layer, and a top surface of the shallow trench isolation is lower than a top surface of the first insulating layer, and a dummy gate structure is formed on the first insulating layer and disposed above the trench, wherein a bottom surface of the dummy gate structure and a top surface of the fin structure are on a same level.

Abstract: Methods of producing integrated circuits and integrated circuits produced by those methods are provided. In an exemplary embodiment, a method of producing an integrated circuit includes forming first and second shallow trench isolations within a substrate, where the first and second shallow trench isolations have an initial shallow trench height. A base well is formed in the substrate, where the base well is positioned between the first and second shallow trench isolations. A gate dielectric is formed overlying the base well, and a floating gate is formed overlying the gate dielectric. An initial shallow trench height is reduced to a reduced shallow trench height shorter than the initial shallow trench height after the floating gate is formed.

Abstract: A memory device includes N word lines, wherein the word lines include an ith word line coupled to an ith memory cell and an (i+1)th word line coupled to an (i+1)th memory cell which is disposed adjacent to the ith memory cell and is a programmed memory cell, and i is an integer from 0 to (N?2). A method of operating such a memory device method includes a reading step. In the reading step, a read voltage is provided to the ith word line, a first pass voltage is provided to the (i+1)th word line, and a second pass voltage is provided to the others of the word lines, wherein the second pass voltage is lower than the first pass voltage.

Abstract: A semiconductor device and a method of fabricating the same, the semiconductor device including a fin structure, a first liner, a first insulating layer and a dummy gate structure. The fin structure is disposed on a substrate, where the fin structure has a trench. The first liner disposed in the trench. The first insulating layer disposed on the first liner. The dummy gate structure is disposed on the first insulating layer and disposed above the trench, where a bottom surface of the dummy gate and a top surface of the fin structure are on a same level.

Abstract: A diode includes a semiconductor substrate having a surface; a first contact region disposed at the surface of the semiconductor substrate and having a first conductivity type; and a second contact region disposed at the surface, laterally spaced from the first contact region, and having a second conductivity type. The diode also includes a buried region disposed in the semiconductor substrate vertically adjacent to the first contact region, having the second conductivity type, and electrically connected with the second contact region; and an isolation region disposed at the surface between the first and second contact regions. The diode also includes a separation region disposed at the surface between the first contact region and the isolation region, the separation region formed from a portion of a first well region disposed in the semiconductor substrate that extends to the surface.

Abstract: A non-volatile memory cell including a semiconductor substrate having a fin shaped upper surface with a top surface and two side surfaces. Source and drain regions are formed in the fin shaped upper surface portion with a channel region there between. A conductive floating gate includes a first portion extending along a first portion of the top surface, and second and third portions extending along first portions of the two side surfaces, respectively. A conductive control gate includes a first portion extending along a second portion of the top surface, second and third portions extending along second portions of the two side surfaces respectively, a fourth portion extending up and over at least some of the floating gate first portion, and fifth and sixth portions extending out and over at least some of the floating gate second and third portions respectively.

Abstract: A method of treating a porous dielectric layer includes preparing a substrate on which the porous dielectric layer including an opening and pores exposed by the opening is formed, supplying a first precursor onto the substrate to form a first sub-sealing layer sealing the exposed pores, and supplying a second precursor onto the first sub-sealing layer to form a second sub-sealing layer covering the first sub-sealing layer. Each of the first and second precursors includes silicon, and a molecular weight of the second precursor is smaller than that of the first precursor.

Abstract: A diode includes a semiconductor substrate having a surface; a first contact region disposed at the surface of the semiconductor substrate and having a first conductivity type; and a second contact region disposed at the surface, laterally spaced from the first contact region, and having a second conductivity type. The diode also includes a buried region disposed in the semiconductor substrate vertically adjacent to the first contact region, having the second conductivity type, and electrically connected with the second contact region; and an isolation region disposed at the surface between the first and second contact regions. The diode also includes a separation region disposed at the surface between the first contact region and the isolation region, the separation region formed from a portion of a first well region disposed in the semiconductor substrate that extends to the surface.

Abstract: A semiconductor device includes an ESD protection device. In a N-well, two P+ doped regions form a collector and emitter of a parasitic transistor of the ESD protection device. The N-well area between the P+ doped regions, forms a base of the parasitic transistor. At some distance away from the P+ doped regions an N+ doped region is provided. The N-well in between the N+ doped region and base of the transistor forms a parasitic resistor of the ESD protection device. The N+ doped region and the emitter of the transistor are coupled to each other via an electrical connection. The ESD protection device has a limited snapback behaviour and has a well-tunable trigger voltage.

Abstract: A method of manufacturing a semiconductor integrated circuit device is provided. The method includes forming a plurality of pillars in a semiconductor substrate, forming an insulating layer between the plurality of pillars in such a manner that an upper region of each pillar protrudes, forming a silicide layer on an exposed surface of the pillar, and forming an insulating layer for planarization in a space between pillars.

Abstract: A method of forming target patterns is disclosed. A substrate with multiple fins is provided. A plurality of mask patterns is formed across the fins and in at least a part of non-target areas. Target patterns are formed respectively in trenches between the mask patterns. The mask patterns are removed. With the disclosed method, the target patterns can be formed with substantially equal thickness. In the case that the target patterns are dummy gates, the conventional defects such as dummy gate residues or gate trench widening caused by uneven thicknesses are not observed upon the dummy gate removal step.

Abstract: A device and method of forming the device using a split gate embedded memory technology are presented. The device includes two polysilicon layers, one for floating gate poly and the other for logic, HV and stack gate and split gate. An oxide-nitride-oxide process of the manufacturing method results in low reliability risk and good uniformity in the device. Moreover, embodiments of the manufacturing method have good controllability of the profile and critical dimension of select gates in production. Furthermore, there is no need to provide non-volatile memory and high-voltage protection for devices manufactured by embodiments of the manufacturing method of the present disclosure.

Abstract: Air gaps are formed between bit lines by etching to remove sacrificial material from between bit lines. Bit lines are protected from etch damage. Sacrificial material may be selectively oxidized prior to deposition of bit line metal so that protective oxide lies along sides of bit lines during etch. Portions of protective material may be selectively formed on tops of bit lines prior to etching sacrificial material.

Abstract: Air gaps are formed between bit lines by etching to remove sacrificial material from between bit lines. Bit lines are protected from etch damage. Sacrificial material may be selectively oxidized prior to deposition of bit line metal so that protective oxide lies along sides of bit lines during etch. Portions of protective material may be selectively formed on tops of bit lines prior to etching sacrificial material.

Abstract: Methods and systems for processing a silicon wafer are disclosed. A method includes providing a flash memory region in the silicon wafer and providing a bipolar transistor with a polysilicon external base in the silicon wafer. The flash memory region and the bipolar transistor are formed by depositing a single polysilicon layer common to both the flash memory region and the bipolar transistor.

Abstract: An one-transistor-one-bit (1T1b) Flash-based EEPROM cell is provided along with improved key operation schemes including applying a negative word line voltage and a reduced bit line voltage for perform erase operation, which drastically reduces the high voltage stress on each cell for enhancing the Program/Erase cycles while reducing cell size. An array made by the 1T1b Flash-based EEPROM cells can be operated with Half-page or Full-page divided programming and pre-charging period for each program cycle. Utilizing PGM buffer made of Vdd devices in the cell array further save silicon area. Additionally, a two-transistor-two-bit (2T2b) EEPROM cell derived from the 1T1b cell is disclosed with additional cell size reduction but with the operation of program and erase the same as that for the 1T1b cells with benefits of no process change but much enhanced storage density, superior Program/Erase endurance cycle, and capability for operating in high temperature environment.

Abstract: For certain three dimensionally stacked memory devices, bit lines or word lines for memory cells are stacked in spaced apart ridge like structures arranged to extend in a first direction. In such structures, complementary wordlines or bit lines, can be damascene features between the spaced apart. The damascene conductors can be formed using double patterned masks to etch sub-lithographic sacrificial lines, forming a fill over the sacrificial lines, and then removing the sacrificial lines to leave trenches that act as the damascene molds in the fill. Then the trenches are filled with the conductor material. The 3D memory array can include dielectric charge trapping memory cells, which have a high-K blocking dielectric layer, and in which the conductor material comprises a high work function material.

Abstract: A method for fabricating semiconductor device is disclosed. The method includes the steps of: providing a substrate having a memory region and a periphery region; forming a memory cell on the memory region; forming a first polysilicon layer on the periphery region and the memory cell; forming a patterned cap layer on the periphery region; forming a second polysilicon layer on the first polysilicon layer and the patterned cap layer; and performing a chemical mechanical polishing (CMP) process to remove the second polysilicon layer, wherein the chemical mechanical polishing process comprises an abrasive of greater than 13% and a remove rate of less than 30 Angstroms/second.

Abstract: The light-emitting device has a plurality of light-emitting elements that is mounted on one or more wiring patterns on a substrate. A new light-emitting element that replaces a defective element is mounted on the same wiring pattern on which the defective element is mounted. The defective element or a trace that remains after removal of the defective element is sealed by a same sealing member by which the new light-emitting element is sealed.

Abstract: An improvement is achieved in the manufacturing yield of a semiconductor device including a plurality of field effect transistors having different characteristics over the same substrate. By combining anisotropic dry etching with isotropic wet etching or isotropic dry etching, three types of sidewalls having different sidewall lengths are formed. By reducing the number of anisotropic dry etching steps, in a third n-type MISFET region and a third p-type MISFET region where layout densities are high, it is possible to prevent a semiconductor substrate from being partially cut between n-type gate electrodes adjacent to each other, between the n-type gate electrode and a p-type gate electrode adjacent to each other, and the p-type gate electrodes adjacent to each other.

Abstract: A method of manufacturing a semiconductor device which can prevent leakage current caused by gate electrodes intersecting element isolation layers in a major axis of an active region, and which further has vertical channels to provide a sufficient overlap margin, and a semiconductor device manufactured using the above method. The device includes gate electrodes formed on element isolation layers that are disposed between active regions and have top surfaces that are higher than the top surfaces of the active regions. Since the gate electrodes are formed on the element isolation layers, leakage current in a semiconductor substrate is prevented. In addition, the gate electrodes are formed using a striped shape mask pattern, thereby obtaining a sufficient overlap margin compared to a contact shape or bar shape pattern.

Abstract: Semiconductor devices and fabrication methods are provided. A semiconductor substrate includes a first region and a second region. A gate dielectric material layer is formed to cover the first region, and a control gate dielectric layer is formed over a surface portion of the second region. The control gate dielectric layer has a top surface higher than the gate dielectric layer. A gate material layer is conformally formed to cover an entire surface of the semiconductor substrate and has a top surface in the second region higher than a top surface in the first region. A first filling material layer is formed on the gate material layer. A first patterned mask layer is formed on the first filling material layer to form a gate on a gate dielectric layer in the first region. A control gate is formed on the control gate dielectric layer of the second region.

Abstract: A semiconductor structure comprises a metal gate structure formed in a substrate, wherein the metal gate structure comprises a first film formed of a first material and formed on a bottom and sidewalls of a gate trench, a second film formed of a second material and formed over the first film and a gate electrode formed over the second film. The semiconductor structure further comprises a resistor structure formed in the substrate, where the resistor structure comprises a third film formed of the first material and formed on a bottom and sidewalls of a resistor trench and a fourth film formed of the second material and formed over the third film.

Abstract: Nonvolatile memory devices and methods of fabricating the same, include, forming a transistor in a first region of a substrate, forming a contact which is connected to the transistor, forming an information storage portion, which is disposed two-dimensionally, in a second region of the substrate, sequentially forming a stop film and an interlayer insulating film which cover the contact and the information storage portion, forming a first trench, which exposes the stop film, on the contact, and forming a second trench which extends through the stop film to expose the contact, wherein a bottom surface of the first trench is lower than a bottom surface of the information storage portion.

Abstract: A metal gate electrode and a poly-silicon resistance element are mixedly mounted in the same semiconductor substrate. The metal gate electrode is formed on a first gate insulating film and includes a first gate metal film and a first gate silicon film. The poly-silicon resistance element includes a silicon film pattern formed on a laminated pattern which includes a first laminate insulating film, a first laminate metal film, and a second laminate insulating film. The first laminate insulating film and the first gate insulating film are formed from a common insulating film; the first laminate metal film and the first gate metal film are formed from a common metal film, and the silicon firm pattern and the first gate silicon film are formed from a common silicon film. In a planar view, a footprint of the silicon film pattern is included within the second laminate insulating film.

Abstract: Methods for fabricating integrated circuits are disclosed. In an exemplary embodiment, a method for fabricating an integrated circuit includes forming a silicon material layer over a semiconductor substrate. The method further includes forming a capping layer over the silicon material layer and over the memory gate stack, removing the capping layer from over the memory array region and the high-voltage MOSFET region, forming a second silicon material layer over the capping layer and over the first silicon material layer, and removing the second silicon material layer. The method further includes removing the capping layer from over the first silicon material layer in the logic device region and removing the first and second silicon material layers from the high-voltage MOSFET region. Still further, the method includes forming a photoresist material layer over the memory array region and the logic device region and exposing the semiconductor substrate to an ion implantation process.

Abstract: A semiconductor device includes a pillar-shaped silicon layer including a first diffusion layer, a channel region, and a second diffusion layer formed in that order from the silicon substrate side, floating gates respectively disposed in two symmetrical directions so as to sandwich the pillar-shaped silicon layer, and a control gate line disposed in two symmetrical directions other than the two directions so as to sandwich the pillar-shaped silicon layer. A tunnel insulating film is formed between the pillar-shaped silicon layer and each of the floating gates. The control gate line is disposed so as to surround the floating gates and the pillar-shaped silicon layer with an inter-polysilicon insulating film interposed therebetween.

Abstract: A method of forming a semiconductor device that includes providing a logic device on a semiconductor on insulating layer of a transfer substrate. The transfer substrate may further include a dielectric layer and a first handle substrate. A second handle substrate may be contacted to the semiconductor on insulating layer of the transfer substrate that includes logic device. The first handle substrate may be removed to expose the dielectric layer. A memory device can then be formed on the dielectric layer. Interconnect wiring can then be formed connecting the logic device with the memory device.

Abstract: Embodiments of the invention generally relate to memory devices and methods for fabricating such memory devices. In one embodiment, a method for fabricating a resistive switching memory device includes depositing a metallic layer on a lower electrode disposed on a substrate and exposing the metallic layer to an activated oxygen source while heating the substrate to an oxidizing temperature within a range from about 300° C. to about 600° C. and forming a metal oxide layer from an upper portion of the metallic layer during an oxidation process. The lower electrode contains a silicon material and the metallic layer contains hafnium or zirconium. Subsequent to the oxidation process, the method further includes heating the substrate to an annealing temperature within a range from greater than 600° C. to about 850° C. while forming a metal silicide layer from a lower portion of the metallic layer during a silicidation process.

Abstract: A method of making a semiconductor structure uses a substrate having a background doping of a first type. A gate structure has a gate dielectric on the substrate and a select gate layer on the gate dielectric. Implanting is performed into a first portion of the substrate adjacent to a first end with dopants of a second type. The implanting is prior to any dopants being implanted into the background doping of the first portion which becomes a first doped region of the second type. An NVM gate structure has a select gate, a storage layer having a first portion over the first doped region, and a control gate over the storage layer. Implanting at a non-vertical angle with dopants of the first type forms a deep doped region under the select gate. Implanting with dopants of the second type forms a source/drain extension.

Abstract: A semiconductor storage device according to an embodiment comprises active areas on a semiconductor substrate. An element isolation is arranged between the active areas and filled by an insulating film. A plurality of memory cells configured to store data are formed on the active areas. Air gaps are arranged between upper-end edge parts of the active areas where the memory cells are formed and an insulating film in the element isolation.

Abstract: A nonvolatile memory device includes a floating gate formed over a semiconductor substrate, an insulator formed on a first sidewall of the floating gate, a dielectric layer formed on a second sidewall and an upper surface of the floating gate, and a control gate formed over the dielectric layer.

Abstract: Numerous other aspects are provided a method for making a nonvolatile memory cell. The method includes forming a non-planar dielectric structure, and conformally depositing a semiconductor layer over the dielectric structure. A portion of the semiconductor layer serves as a channel region for a transistor, and the channel region is non-planar in shape.

Abstract: A process for obtaining an array of nanodots (212) for microelectronic devices, characterized in that it comprises the following steps: deposition of a silicon layer (210) on a substrate (100, 132), formation, above the silicon layer (210), of a layer (240) of a material capable of self-organizing, in which at least one polymer substantially forms cylinders (242) organized into an array within a matrix (244), formation of patterns (243) in the layer (240) of a material capable of self-organizing by elimination of the said cylinders (242), formation of a hard mask (312) by transfer of the said patterns (243), production of silicon dots (212) in the silicon layer (210) by engraving through the hard mask (312), silicidation of the silicon dots (212), comprising deposition of a metal layer (510).

Abstract: A three-dimensional (3-D) nonvolatile memory device includes channel layers protruding perpendicular to a surface of a substrate, interlayer insulating layers and conductive layer patterns alternately formed to surround each of the channel layers, a slit formed between the channel layers, the slit penetrating the interlayer insulating layers and the conductive layer patterns, and an etch-stop layer formed on the surface of the substrate at the bottom of the slit.

Abstract: A nonvolatile semiconductor memory device includes a plurality of nonvolatile memory cells formed on a semiconductor substrate, each memory cell including source and drain regions separately formed on a surface portion of the substrate, buried insulating films formed in portions of the substrate that lie under the source and drain regions and each having a dielectric constant smaller than that of the substrate, a tunnel insulating film formed on a channel region formed between the source and drain regions, a charge storage layer formed of a dielectric body on the tunnel insulating film, a block insulating film formed on the charge storage layer, and a control gate electrode formed on the block insulating film.

Abstract: A fin field effect transistor and method of forming the same. The fin field effect transistor includes a semiconductor substrate having a fin structure and between two trenches with top portions and bottom portions. The fin field effect transistor further includes shallow trench isolations formed in the bottom portions of the trenches and a gate electrode over the fin structure and the shallow trench isolation, wherein the gate electrode is substantially perpendicular to the fin structure. The fin field effect transistor further includes a gate dielectric layer along sidewalls of the fin structure and source/drain electrode formed in the fin structure.

Abstract: This technology relates to a nonvolatile memory device and a method for fabricating the same. The nonvolatile memory device may include a pipe connection gate electrode configured to have a lower part buried in a groove formed in a substrate, one or more pipe channel layers formed within the pipe connection gate electrode, pairs of main channel layers each coupled with the pipe channel layer and extended in a direction substantially perpendicular to the substrate; and a plurality of interlayer insulating layers and a plurality of cell gate electrodes alternately stacked along the main channel layers. In accordance with this technology, a lower part of the pipe connection gate electrode is buried in the substrate. Accordingly, electric resistance may be reduced because the pipe connection gate electrode may have an increased volume without a substantial increase of the height.

Abstract: An electronic device can include a tunnel structure that includes a first electrode, a second electrode, and tunnel dielectric layer disposed between the electrodes. In a particular embodiment, the tunnel structure may or may not include an intermediate doped region that is at the primary surface, abuts a lightly doped region, and has a second conductivity type opposite from and a dopant concentration greater than the lightly doped region. In another embodiment, the electrodes have opposite conductivity types. In a further embodiment, an electrode can be formed from a portion of a substrate or well region, and the other electrode can be formed over such portion of the substrate or well region.