Patents Issued in October 2, 2008
-
Publication number: 20080237692Abstract: Provided is a method of forming a floating gate, a non-volatile memory device using the same, and a method of fabricating the non-volatile memory device, in which nano-crystals of nano-size whose density and size can be easily adjusted, are synthesized using micelles so as to be used as the floating gate of the non-volatile memory device. The floating gate is fabricated by forming a tunnel oxide film on the semiconductor substrate, coating a gate formation solution on the tunnel oxide film in which the gate formation solution includes micelle templates into which precursors capable of synthesizing metallic salts in nano-structures formed by a self-assembly method are introduced, and arranging the metallic salts on the tunnel oxide film by removing the micelle templates, to thereby form the floating gate.Type: ApplicationFiled: March 25, 2008Publication date: October 2, 2008Inventors: Jaegab LEE, Jang-Sik LEE, Chi Young LEE, Byeong Hyeok SOHN
-
Publication number: 20080237693Abstract: There is provided a storage of a non-volatile memory device and a method of forming the same. The storage of example embodiments may include a bottom electrode, a first tunneling insulating layer on the bottom electrode, a middle electrode on the first tunneling insulating layer, a second tunneling insulating layer on the middle electrode, and a top electrode on the second tunneling insulating layer. The first and second tunneling insulating layers may be formed of metal oxide having a thickness from about several ? to about several tens ? and a storage may be formed to have a width of about several tens nm. Therefore, a multi bit storage, increased integration, increased operation speed and decreased power consumption may be realized.Type: ApplicationFiled: March 28, 2008Publication date: October 2, 2008Inventors: Jang-Eun Lee, Se-Chung Oh, Kyung-Tae Nam, Jun-Ho Jeong, Dae-Kyom Kim
-
Publication number: 20080237694Abstract: The invention relates to integrated circuits, to a cell, to a cell arrangement, to a method for manufacturing an integrated circuit, to a method for manufacturing a cell, and to a memory module. In an embodiment of the invention, an integrated circuit is provided having a cell, the cell including a low-k dielectric layer, a first high-k dielectric layer disposed above the low-k dielectric layer, a charge trapping layer disposed above the first high-k dielectric layer, and a second high-k dielectric layer disposed above the charge trapping layer.Type: ApplicationFiled: March 27, 2007Publication date: October 2, 2008Inventors: Michael Specht, Nicolas Nagel, Josef Willer
-
Publication number: 20080237695Abstract: This disclosure concerns a memory comprising a charge trapping film; a gate insulating film; a back gate on the charge trapping film; a front gate on the gate insulating film; and a body region provided between a drain and a source, wherein the memory includes a first storage state for storing data depending on the number of majority carriers in the body region and a second storage state for storing data depending on the amount of charges in the charge trapping film, and the memory is shifted from the first storage state to the second storage state by converting the number of majority carriers in the body region into the amount of charges in the charge trapping film or from the second storage state to the first storage state by converting the amount of charges in the charge trapping film into the number of majority carriers in the body region.Type: ApplicationFiled: September 25, 2007Publication date: October 2, 2008Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tomoaki SHINO, Akihiro Nitayama, Takeshi Hamamoto, Hideaki Aochi, Takashi Ohsawa, Ryo Fukuda
-
Publication number: 20080237696Abstract: A memory device, a memory array and a method of arranging memory devices and arrays. The memory device includes a memory region including a plurality of memory cells, each memory cell with a source, a drain and a channel between the source and the drain, a channel dielectric, a charge storage region and an electrically alterable conductor-material system in proximity to the charge storage region. The memory device includes a plurality of conductor lines. The memory includes a non-memory region having embedded logic including a plurality of transistors, each transistor for electrically coupling one of the conductor lines and each transistor including a transistor source, a transistor drain and a transistor gate.Type: ApplicationFiled: October 31, 2007Publication date: October 2, 2008Inventor: Chih-Hsin Wang
-
Publication number: 20080237697Abstract: A metal oxide having a sufficiently higher dielectric constant than silicon nitride, such as Ti oxide, Zr oxide, or Hf oxide is used as base material, and in order to generate a trap level capable of moving in and out electrons therein, a high-valence substance of valence of 2 or more (that is, valence VI or higher) is added by a proper amount, and to control the trap level, a proper amount of nitrogen (carbon, boron, or low-valence substance) is added, and thus a nonvolatile semiconductor memory having a charge accumulating layer is obtained.Type: ApplicationFiled: March 19, 2008Publication date: October 2, 2008Inventors: Tatsuo SHIMIZU, Koichi Muraoka
-
Publication number: 20080237698Abstract: A monolithic, three dimensional NAND string includes a first memory cell located over a second memory cell. A semiconductor active region of the first memory cell is a first pillar having a square or rectangular cross section when viewed from above, the first pillar being a first conductivity type semiconductor region located between second conductivity type semiconductor regions. A semiconductor active region of the second memory cell is a second pillar having a square or rectangular cross section when viewed from above, the second pillar located under the first pillar, the second pillar being a first conductivity type semiconductor region located between second conductivity type semiconductor regions. One second conductivity type semiconductor region in the first pillar contacts one second conductivity type semiconductor region in the second pillar.Type: ApplicationFiled: March 27, 2007Publication date: October 2, 2008Inventors: Nima Mokhlesi, Roy Scheuerlein
-
Publication number: 20080237699Abstract: A nonvolatile semiconductor memory includes a source area and a drain area provided on a semiconductor substrate with a gap which serves as a channel area, a first insulating layer, a charge accumulating layer, a second insulating layer (block layer) and a control electrode, formed successively on the channel area, and the second insulating layer is formed by adding an appropriate amount of high valence substance into base material composed of substance having a sufficiently higher dielectric constant than the first insulating layer so as to accumulate a large amount of negative charges in the block layer by localized state capable of trapping electrons, so that the high dielectric constant of the block layer and the high electronic barrier are achieved at the same time.Type: ApplicationFiled: March 18, 2008Publication date: October 2, 2008Inventors: Tatsuo SHIMIZU, Koichi Muraoka, Masato Koyama, Shoko Kikuchi
-
Publication number: 20080237700Abstract: A nonvolatile memory device and method of making the same are provided. Memory cells may be provided in a cell area wherein each memory cell has an insulative structure including a tunnel insulating layer, a floating trap layer and a blocking layer, and a conductive structure including an energy barrier layer, a barrier metal layer and a low resistance gate electrode. A material having a lower resistivity may be used as the gate electrode so as to avoid problems associated with increased resistance and to allow the gate electrode to be made relatively thin. The memory device may further include transistors in the peripheral area, which may have a gate dielectric layer, a lower gate electrode of poly-silicon and an upper gate electrode made of metal silicide, allowing an improved interface with the lower gate electrode without diffusion or reaction while providing a lower resistance.Type: ApplicationFiled: March 27, 2008Publication date: October 2, 2008Inventors: Ju-Hyung Kim, Jung-Dal Choi, Jang-Hyun You
-
Publication number: 20080237701Abstract: A semiconductor component includes a semiconductor body having an edge with an edge zone of a first conductivity type. Charge compensation regions of a second conductivity type are embedded into the edge zone, with the charge compensation regions extending from a top side of the semiconductor component vertically into the semiconductor body. For the number Ns of charge carriers present in a volume Vs between two charge compensation regions that are adjacent in a direction perpendicular to the edge, and for the number Np of charge carriers present in a volume Vp between two charge compensation regions that are adjacent in a direction parallel to the edge, Np>Ns holds true.Type: ApplicationFiled: October 3, 2007Publication date: October 2, 2008Applicant: INFINEON TECHNOLOGIES AUSTRIA AGInventors: Armin Willmeroth, Michael Rueb, Carolin Tolksdorf, Markus Schmitt
-
Publication number: 20080237702Abstract: An LDMOS transistor includes a substrate having first conductive type, a first well having second conductive type, an isolation structure disposed on the substrate, and a deep doped region having first conductive type disposed between the first well and the substrate. The deep doped region is heavily doped, a portion of the deep doped region is disposed in the bottom portion of the first well, and the other portion of the deep doped region is disposed in the substrate.Type: ApplicationFiled: March 26, 2007Publication date: October 2, 2008Inventors: Chih-Hua Lee, Chien-Wei Li
-
Publication number: 20080237703Abstract: An exemplary embodiment of a semiconductor device capable of high-voltage operation includes a substrate with a well region therein. A gate stack with a first side and a second side opposite thereto, overlies the well region. Within the well region, a doped body region includes a channel region extending under a portion of the gate stack and a drift region is adjacent to the channel region. A drain region is within the drift region and spaced apart by a distance from the first side thereof and a source region is within the doped body region near the second side thereof. There is no P-N junction between the doped body region and the well region.Type: ApplicationFiled: March 28, 2007Publication date: October 2, 2008Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.Inventors: Yi-Chun Lin, Chi-Chih Chen, Kuo-Ming Wu, Ruey-Hsin Liu
-
Publication number: 20080237704Abstract: An isolation structure for a semiconductor device comprises a floor isolation region, a dielectric filled trench above the floor isolation region and a sidewall isolation region extending downward from the bottom of the trench to the floor isolation region. This structure provides a relatively deep isolated pocket in a semiconductor substrate while limiting the depth of the trench that must be etched in the substrate. A MOSFET is formed in the isolated pocket.Type: ApplicationFiled: December 17, 2007Publication date: October 2, 2008Applicants: Advanced Analogic Technologies, Inc., Advanced Analogic Technologies (Hong Kong) LimitedInventors: Richard K. Williams, Donald Ray Disney, Wai Tien Chan
-
Publication number: 20080237705Abstract: The LDMOS transistor (1) of the invention comprises a substrate (2), a gate electrode (10), a substrate contact region (11), a source region (3), a channel region (4) and a drain region (5), which drain region (5) comprises a drain contact region (6) and drain extension region (7). The drain contact region (6) is electrically connected to a top metal layer (23), which extends over the drain extension region (7), with a distance (723) between the top metal layer (23) and the drain extension region (7) that is larger than 2?m. This way the area of the drain contact region (6) may be reduced and the RF power output efficiency of the LDMOS transistor (1) increased. In another embodiment the source region (3) is electrically connected to the substrate contact region (11) via a suicide layer (32) instead of a first metal layer (21), thereby reducing the capacitive coupling between the source region (3) and the drain region (5) and hence increasing the RF power output efficiency of the LDMOS transistor (1) further.Type: ApplicationFiled: August 2, 2006Publication date: October 2, 2008Applicant: NXP B.V.Inventors: Stephan Jo Cecile Henri Theeuwen, Freerk Van Rijs, Petra C.A. Hammes
-
Publication number: 20080237706Abstract: A lateral MOSFET formed in a substrate of a first conductivity type includes a gate formed atop a gate dielectric layer over a surface of the substrate, a drain region of a second conductivity type, a source region of a second conductivity type, and a body region of the first conductivity type which extends under the gate. The body region may have a non-monotonic vertical doping profile with a portion located deeper in the substrate having a higher doping concentration than a portion located shallower in the substrate. The lateral MOSFET may be drain-centric, with the source region and an optional dielectric-filled trench surrounding the drain region.Type: ApplicationFiled: December 17, 2007Publication date: October 2, 2008Applicants: Advanced Analogic Technologies, Inc., Advanced Analogic Technologies (Hong Kong) LimitedInventors: Richard K. Williams, Donald Ray Disney, Wai Tien Chan
-
Publication number: 20080237707Abstract: A semiconductor device includes a first semiconductor layer of a first conductivity type, a second semiconductor layer of the first conductivity type provided on the first semiconductor layer, having a lower impurity concentration than the first semiconductor layer, a third semiconductor layer of a second conductivity type provided on the second semiconductor layer, a base region of the second conductivity type provided in the third semiconductor layer, a source region of the first conductivity type provided in the base region, a first drain region of the first conductivity type provided in the third semiconductor layer, the first drain region being apart from the base region, a lightly doped drain region of the first conductivity type provided between the first drain region and the source region, the lightly doped drain region being in contact with the first drain region, the lightly doped drain having lower impurity concentration than the first drain region, a second drain region of the first conductivity tType: ApplicationFiled: November 30, 2007Publication date: October 2, 2008Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Fumito SUZUKI, Koichi Endo
-
Publication number: 20080237708Abstract: A field effect transistor (FET) with an adjacent body contact, a SOI IC with circuits including the FETs and a method of fabricating the ICs. Device islands are formed in the silicon surface layer of a SOI wafer. Gates are defined on the wafer. Body contacts are formed in a perimeter conductive region adjacent to the gates. The body contacts may be either a silicide strap along the gate sidewall at one side of the FET or a separate contact separated from the gate by a dielectric stripe at one side of the FET. Separate contacts may be connected to a bias supply.Type: ApplicationFiled: March 26, 2007Publication date: October 2, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Jack A. Mandelman, Haining S. Yang
-
Publication number: 20080237709Abstract: A field effect transistor (“FET”) is formed to include a stress in a channel region of an active semiconductor region of an SOI substrate. A gate is formed to overlie the active semiconductor region, after which a sacrificial stressed layer is formed which overlies the gate and the active semiconductor region. Then, the SOI substrate is heated to cause a flowable dielectric material in a buried dielectric layer of the SOI substrate to soften and reflow. As a result of the reflowing, the sacrificial stressed layer induces stress in a channel region of the active semiconductor region underlying the gate. A source region and a drain region are formed in the active semiconductor region, desirably after removing the sacrificial stressed layer.Type: ApplicationFiled: March 30, 2007Publication date: October 2, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Dureseti Chidambarrao, William K. Henson, Yaocheng Liu
-
Publication number: 20080237710Abstract: In one embodiment, the present invention includes a double gate transistor having a silicon fin formed on a buried oxide layer and first and second insulation layers formed on a portion of the silicon fin, where at least the second insulation layer has a pair of portions extending onto respective first and second portions of the silicon fin to each act as a self-aligned spacer structure. Other embodiments are described and claimed.Type: ApplicationFiled: March 28, 2007Publication date: October 2, 2008Inventors: Ibrahim Ban, Uday Shah
-
Publication number: 20080237711Abstract: A manufacturing method of a thin-film semiconductor apparatus and a thin-film semiconductor apparatus, in which a semiconductor thin film is spot-irradiated with an energy beam in the presence of n-type or p-type impurity to form a shallow diffusion layer in which the impurity is diffused only in a surface layer of the semiconductor thin film.Type: ApplicationFiled: September 18, 2007Publication date: October 2, 2008Applicant: SONY CORPORATIONInventors: Akio Machida, Toshio Fujino, Tadahiro Kono
-
Publication number: 20080237712Abstract: By reconfiguring material in a recess formed in drain and source regions of SOI transistors, the depth of the recess may be increased down to the buried insulating layer prior to forming respective metal silicide regions, thereby reducing series resistance and enhancing the stress transfer when the corresponding transistor element is covered by a highly stressed dielectric material. The material redistribution may be accomplished on the basis of a high temperature hydrogen bake.Type: ApplicationFiled: November 8, 2007Publication date: October 2, 2008Inventors: Andy Wei, Thorsten Kammler, Roman Boschke, Casey Scott
-
Publication number: 20080237713Abstract: A device includes a semiconductor layer on an insulating layer; a gate insulator on the semiconductor layer; a comb-shaped gate electrode on the gate insulator, including a base portion extending in a first direction and tooth portions extending in a second direction from one side surface of the base portion; a comb-shaped low-concentration diffusion layer in the semiconductor layer under the gate electrode having a first electroconductive type; a source layer in the semiconductor layer on the tooth portion side of the base portion having second electroconductive type with high concentration; a drain layer in the semiconductor layer on a side of the base portion opposite the tooth portion side having second electroconductive type with high concentration; and an extraction layer in the semiconductor layer between the source and the device isolating layers having first electroconductive type with high concentration, and connected with the diffusion layer.Type: ApplicationFiled: February 29, 2008Publication date: October 2, 2008Applicant: OKI ELECTRIC INDUSTRY CO., LTD.Inventor: Yasuhiro Doumae
-
Publication number: 20080237714Abstract: Embodiments of a manufacturing process flow for producing standalone memory devices that can achieve bit cell sizes on the order of 4F2 or 5F2, and that can be applied to common source/drain, separate source/drain, or common source only or common drain only transistor arrays. Active area and word line patterns are formed as perpendicularly-arranged straight lines on a Silicon-on-Insulator substrate. The intersections of the active area and spaces between word lines define contact areas for the connection of vias and metal line layers. Insulative spacers are used to provide an etch mask pattern that allows the selective etching of contact areas as a series of linear trenches, thus facilitating straight line lithography techniques. Embodiments of the manufacturing process remove first layer metal (metal-1) islands and form elongated vias, in a succession of processing steps to build dense memory arrays.Type: ApplicationFiled: March 21, 2008Publication date: October 2, 2008Inventor: Pierre Fazan
-
Publication number: 20080237715Abstract: A method for manufacturing a semiconductor device, includes: a) forming a first semiconductor layer on a semiconductor substrate; b) forming a second semiconductor layer on the first semiconductor layer; c) sequentially etching a part of the second semiconductor layer and a part of the first semiconductor layer so as to form a first groove exposing the first semiconductor layer; d) forming a cavity between the semiconductor substrate and the second semiconductor layer by etching the first semiconductor layer through the first groove under an etching condition in which the first semiconductor layer is more easily etched than the second semiconductor layer; e) thermally oxidizing each of an upper surface of the semiconductor substrate and a lower surface of the second semiconductor layer while leaving a gap in the cavity so as to form oxide films on an upside and a downside of the gap; and f) forming an insulation etching stopper layer in the gap that is sandwiched by the oxide films from a top and a bottom.Type: ApplicationFiled: March 24, 2008Publication date: October 2, 2008Applicant: SEIKO EPSON CORPORATIONInventor: Hirokazu HISAMATSU
-
Publication number: 20080237716Abstract: An integrated circuit structure comprising a boron etch-stop layer on a surface of the integrated circuit structure having a full-width half-maximum (FWHM) thickness value less than 100 nanometers, wherein the boron etch-stop layer is substantially free of germanium and carbon. In one embodiment, the boron etch-stop layer has a FWHM thickness value less than 20 nanometers and may contain added germanium or carbon. Systems and devices containing same are also disclosed. Chemical vapor deposition (CVD) may be used to form the boron etch-stop layer.Type: ApplicationFiled: May 2, 2008Publication date: October 2, 2008Inventor: Darwin G. Enicks
-
Publication number: 20080237717Abstract: An integrated circuit comprises a substrate and a buried dielectric formed in the substrate. The buried dielectric has a first thickness in a first region, a second buried dielectric thickness in a second region, and a step between the first and second regions. A semiconductor layer overlies the buried dielectric.Type: ApplicationFiled: April 25, 2008Publication date: October 2, 2008Inventors: Hao-Yu Chen, Chang-Yun Chang, Di-Hong Lee, Fu-Liang Yang
-
Publication number: 20080237718Abstract: Methods and associated structures of forming a microelectronic device are described. Those methods may include forming a first HOD layer on a first side of a first silicon substrate, forming a CMOS region on a second side of the silicon substrate, forming amorphous silicon on the CMOS region, recrystallizing the amorphous silicon to form a first single crystal silicon layer, and forming a second HOD layer on the first single crystal silicon layer.Type: ApplicationFiled: March 30, 2007Publication date: October 2, 2008Inventors: Vladimir Noveski, Sujit Sharan, Aleksandar Aleksov
-
Publication number: 20080237719Abstract: A multi-gate structure includes a substrate (110, 210, 410), an electrically insulating layer (120, 220, 420) over the substrate, and a first semiconducting fin (130, 230, 430) above the electrically insulating layer. The first semiconducting fin includes a top region (131, 231, 431), a first side region (132, 232, 432), and a second side region (133, 233, 433). The top region, the first side region, and the second side region have doping concentrations that are substantially equal to each other. The multi-gate structure may be made by depositing a solid source material (510) over the semiconducting fin, and by annealing the multi-gate structure such that dopants from the solid source material diffuse into the semiconducting fin and uniformly dope the top region and the first and second side regions.Type: ApplicationFiled: March 28, 2007Publication date: October 2, 2008Inventors: Brian S. Doyle, Suman Datta, Jack T. Kavalieros, Rafael Rios
-
Publication number: 20080237720Abstract: Semiconductor structure formed on a substrate and process of forming the semiconductor. The semiconductor includes a plurality of field effect transistors having a first portion of field effect transistors (FETS) and a second portion of field effect transistors. A first stress layer has a first thickness and is configured to impart a first determined stress to the first portion of the plurality of field effect transistors. A second stress layer has a second thickness and is configured to impart a second determined stress to the second portion of the plurality of field effect transistors.Type: ApplicationFiled: September 28, 2007Publication date: October 2, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Bruce B. Doris, Oleg G. Gluschenkov, Huilong Zhu
-
Publication number: 20080237721Abstract: An external current injection source is provided to individual fingers of a multi-finger semiconductor device to provide the same trigger voltage across the multiple fingers. For example, the external injection current is supplied to the body of a MOSFET or the gate of a thyristor. The magnitude of the supplied current from each external current injection source is adjusted so that each finger has the same trigger voltage. The external current supply circuit may comprise diodes or an RC triggered MOSFET. The components of the external current supply circuit may be tuned to achieve a desired predetermined trigger voltage across all fingers of the multi-finger semiconductor device.Type: ApplicationFiled: March 28, 2007Publication date: October 2, 2008Inventors: Michel J. Abou-Khalil, Robert Gauthier, Hongmei Li, Junjun Li, Souvick Mitra, Christopher S. Putnam
-
Publication number: 20080237722Abstract: A transistor, comprising a first gate structure formed on a substrate, and having a stacked structure of a first gate electrode and a first gate hard mask, a first gate spacer formed on sidewalls of the first gate structure, a second gate structure having a stacked structure of a second gate electrode and a second gate hard mask, the second gate structure surrounding both sidewalls and top surfaces of the first gate structure and the first gate spacer, and a second gate spacer formed on sidewalls of the second gate structure.Type: ApplicationFiled: December 26, 2007Publication date: October 2, 2008Inventor: In-Chan Lee
-
Publication number: 20080237723Abstract: By introducing additional strain-inducing mechanisms on the basis of stress memorization techniques, the performance of NMOS transistors may be significantly increased, thereby reducing the imbalance between PMOS transistors and NMOS transistors. By amorphizing and re-crystallizing the respective material in the presence of a mask layer at various stages of the manufacturing process, a drive current improvement of up to approximately 27% has been observed, with the potential for further performance gain.Type: ApplicationFiled: November 9, 2007Publication date: October 2, 2008Inventors: Andy Wei, Anthony Mowry, Andreas Gehring, Maciej Wiatr
-
Publication number: 20080237724Abstract: To provide a semiconductor thin film on which crystal grains with large diameters are formed over a wide range. A beam pattern including a plurality of recessed patterns is scan-irradiated to amorphous silicon in a first scanning direction (first crystallization step). Then, a beam pattern is scan-irradiated in a second scanning direction that is different from the first scanning direction by 90 degrees (second crystallization step). As a result, by having band-shape crystal grains formed in the first crystallization step as seeds, the crystal grain diameters thereof are expanded in the second scanning direction. That is, it is possible to obtain new band-shape crystal grains with the expanded grain diameters.Type: ApplicationFiled: March 19, 2008Publication date: October 2, 2008Applicant: NEC LCD Technologies, Ltd.Inventor: Mitsuru NAKATA
-
Publication number: 20080237725Abstract: A semiconductor device according to the present invention includes an active region having a MOS transistor and a groove surrounding the periphery of the active region, in which the groove is filled with a combination of a first material that produces a tensile strain in the active region and a second material that produces a compressive strain. Thereby, the foregoing object is achieved.Type: ApplicationFiled: June 4, 2008Publication date: October 2, 2008Applicant: FUJITSU LIMITEDInventors: Takashi SUZUKI, Kiyoshi OZAWA
-
Publication number: 20080237726Abstract: A stress-concentrating spacer structure is a stack of an upper gate spacer with a low Young's modulus and a lower gate spacer with a high Young's modulus. The stacked spacer structure surrounds the gate electrode. The stress-concentrating spacer structure may contact an inner gate spacer that contacts the gate electrode or may directly contact the gate electrode. The upper gate spacer deforms substantially more than the lower gate spacer. The stress generated by the stress liner is thus transmitted primarily through the lower gate spacer to the gate electrode and subsequently to the channel of the MOSFET. The efficiency of the transmission of the stress from the stress liner to the channel is thus enhanced compared to conventional MOSFETs structure with a vertically uniform composition within a spacer.Type: ApplicationFiled: March 28, 2007Publication date: October 2, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventor: Thomas W. Dyer
-
Publication number: 20080237727Abstract: The present invention provides a CMIS device that achieves a low threshold voltage by use of a metal gate superior in the resistance to annealing in a reducing atmosphere. The CMIS device includes a substrate, PMISFET and NMISFET. THE PMISFET includes: an N-type semiconductor layer formed on the substrate; first source/drain regions formed in the N-type semiconductor layer; a first gate insulating film formed on the N-type semiconductor layer between the first source/drain regions; a carbon layer formed on the first gate insulating film and having a thickness of 5 nanometers or smaller; a first gate electrode formed on the carbon layer and including a metal.Type: ApplicationFiled: December 27, 2007Publication date: October 2, 2008Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Reika ICHIHARA, Yoshinori Tsuchiya, Masato Koyama
-
Publication number: 20080237728Abstract: A semiconductor device includes: a p-type active region and an n-type active region which are formed in a semiconductor substrate; a first MISFET including a first gate insulating film formed on the p-type active region and a first gate electrode formed on the first gate insulating film and including a first electrode formation film containing a metal element; and a second MISFET including a second gate insulating film formed on the n-type active region and a second gate electrode formed on the second gate insulating film and including a second electrode formation film. The second electrode formation film contains the same metal element as the first electrode formation film and has an oxygen content higher than the first electrode formation film.Type: ApplicationFiled: October 30, 2007Publication date: October 2, 2008Inventors: Riichiro Mitsuhashi, Kota Oikawa, Osullivan Barry, Stefan Kubicek
-
Publication number: 20080237729Abstract: Some embodiments of the present invention include selectively inducing back side stress opposite transistor regions to optimize transistor performance.Type: ApplicationFiled: April 3, 2008Publication date: October 2, 2008Inventors: Gilroy J. Vandentop, Rajashree Baskaran
-
Publication number: 20080237730Abstract: A semiconductor device includes a first field effect transistor and a second field effect transistor. The first field effect transistor includes a first gate electrode formed; first impurity diffused areas; and first sidewall portions. The first sidewall portions include a first lower insulation film and a first charge accumulation film. The second field effect transistor includes a second gate electrode; second impurity diffused areas; and second sidewall portions. The second sidewall portions include a second lower insulation film and a second charge accumulation film. The first lower insulation film contains one of a silicon thermal oxide film and a non-doped silicate glass, and the second lower insulation film contains a non-doped silicate glass. The second sidewall portions have a width along a gate longitudinal direction larger than that of the first sidewall portions. The second lower insulation film has a thickness larger than that of the first lower insulation film.Type: ApplicationFiled: March 13, 2008Publication date: October 2, 2008Inventors: Katsutoshi Saeki, Yoshitaka Satou
-
Publication number: 20080237731Abstract: A semiconductor device includes a semiconductor layer formed on an insulation layer and having an MOS (Metal Oxide Semiconductor) transistor area and a bi-polar transistor area; an MOS transistor formed in the MOS transistor area; and a bi-polar transistor formed in the bi-polar transistor area. The MOS transistor includes a source area of a second conductive type; a drain area of the second conductive type; and a channel area of a first conductive type. The MOS transistor further includes a gate electrode formed on the channel area with a first oxide layer inbetween. The bi-polar transistor includes a collector area of the second conductive type; an emitter area of the second conductive type; and a base area of the first conductive type. The bi-polar transistor further includes a dummy pattern formed on the base area with a second oxide layer inbetween.Type: ApplicationFiled: March 14, 2008Publication date: October 2, 2008Inventors: Koichi Kishiro, Koji Yuki
-
Publication number: 20080237732Abstract: A semiconductor device includes a first pMISFET region having an Si channel, a second pMISFET region having an Si channel and an nMISFET region having an Si channel. First SiGe layers which apply first compression strain to the Si channel are embedded and formed in the first pMISFET region to sandwich the Si channel thereof and second SiGe layers which apply second compression strain different from the first compression strain to the Si channel are embedded and formed in the second pMISFET region to sandwich the Si channel thereof.Type: ApplicationFiled: March 27, 2008Publication date: October 2, 2008Inventors: Shinji MORI, Tsutomu Sato, Koji Matsuo
-
Publication number: 20080237733Abstract: The embodiments of the invention provide a structure and method to enhance channel stress by using optimized STI stress and nitride capping layer stress. More specifically, a transistor structure is provided comprising a substrate having a first transistor region and a second transistor region, different than the first transistor region. Moreover, first transistors are provided over the first transistor region and second transistors, different than the first transistors, are provided over the second transistors region. The first transistor comprises an NFET and the second transistor comprises a PFET. The structure further includes STI regions in the substrate adjacent sides of the first transistors and the second transistors, wherein the STI regions comprise stress producing regions. Recesses are within at least two of the STI regions, such that portions of at least one of said first stress liner and said second stress liner are positioned within said recesses.Type: ApplicationFiled: March 27, 2007Publication date: October 2, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Xiangdong Chen, Zhijiong Luo, Huilong Zhu
-
Publication number: 20080237734Abstract: A complementary metal-oxide-semiconductor (CMOS) transistor comprising a substrate, a first conductive type MOS transistor, a second conductive type MOS transistor, a buffer layer, a first stress layer and a second stress layer is provided. The substrate has a device isolation structure therein that defines a first active area and a second active area. The first conductive type MOS transistor and the second conductive type MOS transistor are respectively disposed in the first active area and the second active area of the substrate. A first nitride spacer of the first conductive type MOS transistor has a thickness greater than that of a second nitride spacer of the second conductive type MOS transistor. The buffer layer is disposed on the first conductive type MOS transistor. The first stress layer is disposed on the buffer layer. The second stress layer is disposed on the second conductive type MOS transistor.Type: ApplicationFiled: March 29, 2007Publication date: October 2, 2008Applicant: UNITED MICROELECTRONICS CORP.Inventors: Wen-Han Hung, Cheng-Tung Huang, Kun-Hsien Lee, Shyh-Fann Ting, Li-Shian Jeng, Meng-Yi Wu, Chung-Min Shih, Tzyy-Ming Cheng, Chia-Wen Liang
-
Publication number: 20080237735Abstract: A hetero-BiMOS injection system comprises a MOSFET transistor formed on a substrate and a hetero-bipolar transistor formed within the substrate. The bipolar transistor can be used to inject charge carriers into a floating gate of the MOSFET transistor. This is done by operating the MOSFET transistor to form an inversion layer in its channel region and operating the bipolar transistor to drive minority charge carriers from the substrate into a floating gate of the MOSFET transistor. The substrate provides a silicon emitter and a silicon germanium containing base for the bipolar transistor. The inversion layer provides a silicon collector for the bipolar transistor.Type: ApplicationFiled: March 30, 2007Publication date: October 2, 2008Inventors: Jack T. Kavalieros, Suman Datta, Robert S. Chau, David L. Kencke
-
Publication number: 20080237736Abstract: A technique capable of promoting miniaturization of an RF power module used in a mobile phone etc. is provided. A directional coupler is formed inside a semiconductor chip in which an amplification part of the RF power module is formed. A sub-line of the directional coupler is formed in the same layer as a drain wire coupled to the drain region of an LDMOSFET, which will serve as the amplification part of the semiconductor chip. Due to this, the predetermined drain wire is used as a main line and the directional coupler is configured by a sub-line arranged in parallel to the main line via an insulating film, together with the main line.Type: ApplicationFiled: December 26, 2007Publication date: October 2, 2008Inventors: Satoshi SAKURAI, Satoshi Goto, Toru FUJIOKA
-
Publication number: 20080237737Abstract: A semiconductor structure is provided which includes a first semiconductor device in a first active semiconductor region and a second semiconductor device in a second active semiconductor region. A first dielectric liner overlies the first semiconductor device and a second dielectric liner overlies the second semiconductor device, with the second dielectric liner overlapping the first dielectric liner at an overlap region. The second dielectric liner has a first portion having a first thickness contacting an apex of the second gate conductor and a second portion extending from peripheral edges of the second gate conductor which has a second thickness substantially greater than the first thickness. A first conductive via contacts at least one of the first or second gate conductors and the conductive via extends through the first and second dielectric liners at the overlap region. A second conductive via may contact at least one of a source region or a drain region of the second semiconductor device.Type: ApplicationFiled: March 29, 2007Publication date: October 2, 2008Applicants: INTERNATIONAL BUSINESS MACHINES CORPORATION, SAMSUNG ELECTRONINCS CO., LTD.Inventors: Xiangdong Chen, Jun Jung Kim, Young Gun Ko, Jae-Eun Park, Haining S. Yang
-
Publication number: 20080237738Abstract: The present invention relates generally to integrated circuits, a cell, a cell arrangement, a method for manufacturing an integrated circuit, a method for manufacturing a cell arrangement and a memory module. In an embodiment of the invention, an integrated circuit having a cell is provided. The cell includes a first source/drain region, a second source/drain region, an active region between the first source/drain region and the second source/drain region, a gate insulating region disposed above the active region, a gate region disposed above the gate insulating region, and at least one metal structure below the first source/drain region or the second source/drain region.Type: ApplicationFiled: March 27, 2007Publication date: October 2, 2008Inventors: Christoph Andreas Kleint, Dirk Manger, Nicolas Nagel, Andreas Taeuber
-
Publication number: 20080237739Abstract: A method of manufacturing a semiconductor device, has forming a gate insulating film over a surface of a substrate, eliminating a portion of the gate insulating film in a region, forming a gate electrode over the gate insulating film and a drain electrode on the region, implanting first impurities into the substrate using the gate electrode and the drain electrode as a mask, forming an insulating film to fill the space between the gate electrode and the drain electrode, and implanting second impurities into the substrate to form a source region using the gate electrode, the drain electrode and the insulating film as a mask.Type: ApplicationFiled: March 25, 2008Publication date: October 2, 2008Applicant: FUJITSU LIMITEDInventor: Hajime KURATA
-
Publication number: 20080237740Abstract: A method of manufacturing a semiconductor device is provided. First, a substrate is provided. The substrate includes a high-voltage device region and a low-voltage device region. The high-voltage device region has a source/drain predetermined region, a pick-up predetermined region and a channel predetermined region. A first dielectric layer is formed on the substrate. Then, the first dielectric layer in the low-voltage device region is removed along with the first dielectric layer in the source/drain predetermined region and the pick-up predetermined region. Afterwards, a second dielectric layer is formed in the low-voltage device region. The thickness of the second dielectric layer is smaller than the thickness of the first dielectric layer. Then, gates are formed in the channel predetermined region and the low-voltage device region respectively. Next, a source/drain region is formed in the substrate of the source/drain predetermined region.Type: ApplicationFiled: March 29, 2007Publication date: October 2, 2008Applicant: UNITED MICROELECTRONICS CORP.Inventors: Jung-Ching Chen, Chun-Ching Yu
-
Publication number: 20080237741Abstract: Methods and associated structures of forming a microelectronic device are described. Those methods may include plasma etching a portion of a source/drain region of a transistor, and then selectively wet etching the source drain region along a (100) plane to form at least one (111) region in the recessed source/drain region.Type: ApplicationFiled: March 30, 2007Publication date: October 2, 2008Inventors: Pushkar Ranade, Keith Zawadzki, Christopher Auth