Insulated Gate Field Effect Transistor Adapted To Function As Load Element For Switching Insulated Gate Field Effect Transistor Patents (Class 257/393)
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Publication number: 20140110731Abstract: An object is to provide a semiconductor device which can suppress characteristic deterioration in each transistor without destabilizing operation. In a non-selection period, a transistor is turned on at regular intervals, so that a power supply potential is supplied to an output terminal of a shift register circuit. A power supply potential is supplied to the output terminal of the shift register circuit through the transistor. Since the transistor is not always on in a non-selection period, a shift of the threshold voltage of the transistor is suppressed. In addition, a power supply potential is supplied to the output terminal of the shift register circuit through the transistor at regular intervals. Therefore, the shift register circuit can suppress noise which is generated in the output terminal.Type: ApplicationFiled: December 30, 2013Publication date: April 24, 2014Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventor: Atsushi Umezaki
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Patent number: 8697557Abstract: Disclosed herein is a method of forming a semiconductor device. In one example, the method includes forming a gate electrode structure above a semiconducting substrate, wherein the gate electrode structure includes a gate insulation layer, a gate electrode, a first sidewall spacer positioned proximate the gate electrode, and a gate cap layer, and forming an etch stop layer above the gate cap layer and above the substrate proximate the gate electrode structure. The method further includes forming a layer of spacer material above the etch stop layer, and performing at least one first planarization process to remove the portion of said layer of spacer material positioned above the gate electrode, the portion of the etch stop layer positioned above the gate electrode and the gate cap layer.Type: GrantFiled: June 7, 2011Date of Patent: April 15, 2014Assignee: GLOBALFOUNDRIES Inc.Inventors: Peter Baars, Till Schloesser, Frank Jakubowski
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Patent number: 8653578Abstract: A semiconductor device having a string gate structure and a method of manufacturing the same suppress leakage current. The semiconductor device includes a selection gate and a memory gate. The channel region of the selection gate has a higher impurity concentration than that of the memory gate. Impurities may be implanted at different angles to form the channel regions having different impurity concentrations.Type: GrantFiled: September 9, 2009Date of Patent: February 18, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Changhyun Lee, Jungal Choi
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Patent number: 8637931Abstract: A finFET device is provided. The finFET device includes a BOX layer, fin structures located over the BOX layer, a gate stack located over the fin structures, gate spacers located on vertical sidewalls of the gate stack, an epi layer covering the fin structures, source and drain regions located in the semiconductor layers of the fin structures, and silicide regions abutting the source and drain regions. The fin structures each comprise a semiconductor layer and extend in a first direction, and the gate stack extends in a second direction that is perpendicular. The gate stack comprises a high-K dielectric layer and a metal gate, and the epi layer merges the fin structures together. The silicide regions each include a vertical portion located on the vertical sidewall of the source or drain region.Type: GrantFiled: December 27, 2011Date of Patent: January 28, 2014Assignee: International Business Machines CorporationInventors: Veeraraghavan S. Basker, Andres Bryant, Huiming Bu, Wilfried Haensch, Effendi Leobandung, Chung-Hsun Lin, Theodorus E. Standaert, Tenko Yamashita, Chun-chen Yeh
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Patent number: 8546890Abstract: An inverter structure is disclosed. The inverter structure includes an NMOS transistor and a PMOS transistor. Preferably, the NMOS transistor includes an n-type gate electrode and an n-type source/drain region, and the PMOS transistor includes a p-type gate electrode and a p-type source/drain region. Specifically, the n-type gate electrode and the p-type gate electrode are physically separated and electrically connected by a conductive contact.Type: GrantFiled: November 27, 2008Date of Patent: October 1, 2013Assignee: United Microelectronics Corp.Inventors: Chien-Li Kuo, Chia-Chun Sun, Chuan-Hsien Fu, Chun-Liang Hou, Yun-San Huang
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Patent number: 8519485Abstract: A method of forming a memory device. The method provides a semiconductor substrate having a surface region. A first dielectric layer is formed overlying the surface region of the semiconductor substrate. A bottom wiring structure is formed overlying the first dielectric layer and a second dielectric material is formed overlying the top wiring structure. A bottom metal barrier material is formed to provide a metal-to-metal contact with the bottom wiring structure. The method forms a pillar structure by patterning and etching a material stack including the bottom metal barrier material, a contact material, a switching material, a conductive material, and a top barrier material. The pillar structure maintains a metal-to-metal contact with the bottom wiring structure regardless of the alignment of the pillar structure with the bottom wiring structure during etching. A top wiring structure is formed overlying the pillar structure at an angle to the bottom wiring structure.Type: GrantFiled: May 7, 2012Date of Patent: August 27, 2013Assignee: Crossbar, Inc.Inventor: Scott Brad Herner
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Patent number: 8507953Abstract: By providing a body controlled double channel transistor, increased functionality in combination with enhanced stability may be accomplished. For instance, flip flop circuits usable for static RAM cells may be formed on the basis of the body controlled double channel transistor, thereby reducing the number of transistors required per cell, which may result in increased information density.Type: GrantFiled: November 30, 2010Date of Patent: August 13, 2013Assignee: GLOBALFOUNDRIES Inc.Inventor: Frank Wirbeleit
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Patent number: 8487349Abstract: The invention describes in detail the structure of a CMOS image sensor pixel that senses color of impinging light without having absorbing filters placed on its surface. The color sensing is accomplished by having a vertical stack of three-charge detection nodes placed in the silicon bulk, which collect electrons depending on the depth of their generation. The small charge detection node capacitance and thus high sensitivity with low noise is achieved by using fully depleted, potential well forming, buried layers instead of undepleted junction electrodes. Two embodiments of contacting the buried layers without substantially increasing the node capacitances are presented.Type: GrantFiled: April 24, 2009Date of Patent: July 16, 2013Assignee: Foveon, Inc.Inventors: Jaroslav Hynecek, Richard B. Merrill, Russel A. Martin
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Patent number: 8482083Abstract: Prior known static random access memory (SRAM) cells required that a diffusion layer be bent into a key-like shape in order to make electrical contact with a substrate with a P-type well region formed therein, which would result in a decrease in asymmetry leading to occurrence of a problem as to the difficulty in micro-patterning. To avoid this problem, the P-type well region in which an inverter making up an SRAM cell is formed is subdivided into two portions, which are disposed on the opposite sides of an N-type well region NW1 and are formed so that a diffusion layer forming a transistor has no curvature while causing the layout direction to run in a direction parallel to well boundary lines and bit lines. At intermediate locations of an array, regions for use in supply power to the substrate are formed in parallel to word lines in such a manner that one region is provided per group of thirty two memory cell rows or sixty four cell rows.Type: GrantFiled: June 23, 2010Date of Patent: July 9, 2013Assignee: Renesas Electronics CorporationInventors: Kenichi Osada, Masataka Minami, Shuji Ikeda, Koichiro Ishibashi
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Patent number: 8476717Abstract: A semiconductor structure. The semiconductor structure includes: a semiconductor substrate which includes a top substrate surface which defines a reference direction perpendicular to the top substrate surface and further includes a first semiconductor body region and a second semiconductor body region; a first gate dielectric region and a second gate dielectric region on top of the first and second semiconductor body regions, respectively; a first gate electrode region on top of the semiconductor substrate and the first gate dielectric region; a second gate electrode region on top of the semiconductor substrate and the second gate dielectric region; and a gate divider region in direct physical contact with the first and second gate electrode regions. The gate divider region does not overlap the first and second gate electrode regions in the reference direction.Type: GrantFiled: January 25, 2012Date of Patent: July 2, 2013Assignee: International Business Machines CorporationInventors: Robert C. Wong, Haining S. Yang
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Patent number: 8441076Abstract: An exemplary aspect of the present invention is an SRAM including: a first gate electrode that constitutes a first load transistor; a second gate electrode that extends in a longitudinal direction of the first gate electrode so as to be spaced apart from the first gate electrode, and constitutes a first drive transistor; a third gate electrode that extends in parallel to the first gate electrode, and constitutes a second load transistor; a first p-type diffusion region that is formed so as to intersect with the third gate electrode, and constitutes the second load transistor; and a first shared contact formed over the first and second gate electrodes and the first p-type diffusion region. The first p-type diffusion region extends to the vicinity of a first gap region between the first and second gate electrodes, and is not formed in the first gap region.Type: GrantFiled: May 4, 2011Date of Patent: May 14, 2013Assignee: Renesas Electronics CorporationInventors: Kazutaka Otsuki, Jun-ichi Takizawa
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Patent number: 8421163Abstract: A power module comprises: first and second terminals; first and second switching elements having a first electrode and a second electrode which is connected to the second terminal; first and second wirings respectively connecting the first electrodes of the first and second switching elements to the first terminal; and a third wiring directly connecting the first electrode of the first switching element to the first electrode of the second switching element, wherein parasitic inductances of the first and second wiring are different or switching characteristics of the first and second switching elements are different.Type: GrantFiled: April 29, 2011Date of Patent: April 16, 2013Assignee: Mitsubishi Electric CorporationInventor: Kazuaki Hiyama
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Patent number: 8405159Abstract: In accordance with an embodiment, a semiconductor device includes an SRAM cell on a substrate. The SRAM cell includes: first and second load transistors each having an n-type source region and a p-type drain region, first and second driver transistors each having a p-type source region and an n-type drain region, and first and second transfer transistors each having an n-type source region and a n-type drain region. The n-type source regions of the first and second load transistors, the n-type drain regions of the first and second driver transistors, and the n-type source regions and the n-type drain regions of the first and second transfer transistors are located in a region other than a region present between any two of the p-type drain regions of the first and second load transistors and the p-type source regions of the first and second driver transistors.Type: GrantFiled: September 16, 2011Date of Patent: March 26, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Kanna Adachi, Shigeru Kawanaka, Satoshi Inaba
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Patent number: 8399935Abstract: Circuits and methods for providing a dual gate oxide (DGO) embedded SRAM with additional logic portions, where the logic and the embedded SRAM have NMOS transistors having a common gate dielectric thickness but have different lightly doped drain (LDD) implantations formed using different LDD masks to provide optimum transistor operation. In an embodiment, a first embedded SRAM is a single port device and a second embedded SRAM is a dual port device having a separate read port. In certain embodiments, the second SRAM includes NMOS transistors having LDD implants formed using the logic portion LDD mask. Transistors formed with the logic portion LDD mask are faster and have lower Vt than transistors formed using a SRAM LDD mask. Dual core devices having multiple embedded SRAM arrays are disclosed. Methods for making the embedded SRAM are also disclosed.Type: GrantFiled: July 1, 2010Date of Patent: March 19, 2013Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventor: Jhon-Jhy Liaw
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Patent number: 8378425Abstract: It is intended to achieve a sufficiently-small SRAM cell area and a stable operation margin in a CMOS 6T-SRAM comprising a vertical transistor SGT. In a static type memory cell made up using six MOS transistors, each of the MOS transistor constituting the memory cell is formed on a planar silicon layer formed on a buried oxide film, to have a structure where a drain, a gate and a source are arranged in a vertical direction, wherein the gate is formed to surround a pillar-shaped semiconductor layer. The planar silicon layer comprises a first active region having a first conductive type, and a second active region having a second conductive type. The first and second active regions are connected to each other through a silicide layer formed in a surface of the planar silicon layer to achieve an SRAM cell having a sufficiently-small area.Type: GrantFiled: February 3, 2010Date of Patent: February 19, 2013Assignee: Unisantis Electronics Singapore Pte Ltd.Inventors: Fujio Masuoka, Shintaro Arai
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Patent number: 8362540Abstract: A multi-layer integrated circuit package includes a switched-mode power supply circuit including a plurality of transistors which form part of a main current loop of the switched-mode power supply circuit. The plurality of transistors are arranged in one or more layers of the integrated circuit package. The package further includes a conductive plate arranged in a different layer of the integrated circuit package than the plurality of transistors. The conductive plate is in close enough proximity to at least part of the main current loop so that a current can be electromagnetically induced in the conductive plate responsive to a change in current in the main current loop.Type: GrantFiled: September 22, 2010Date of Patent: January 29, 2013Assignee: Infineon Technologies AGInventor: Jens Ejury
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Patent number: 8362619Abstract: A nonvolatile memory device comprises a semiconductor substrate comprising alternating, parallel active regions and isolation regions; first and second selection lines intersecting the active regions and the isolation regions; first junctions formed in the active regions between the first and second selection lines; spacers formed on sidewalls of the first and second selection lines; second junctions deeper than the first junctions formed in the first junctions, respectively; contact plugs coupled to one side of the respective second junctions; and dummy plugs coupled second sides of the respective second junctions.Type: GrantFiled: May 4, 2010Date of Patent: January 29, 2013Assignee: Hynix Semiconductor Inc.Inventor: Sun Mi Park
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Patent number: 8350338Abstract: A semiconductor device is disclosed. In an embodiment, a semiconductor device includes a N-well within a P-well in a silicon layer, the silicon layer positioned atop a buried oxide layer of a silicon-on-insulator (SOI) substrate; a first source region and a second source region within a portion of the P-well; a first drain region and a second drain region within a portion of the P-well and within a portion of the N-well; and a gate positioned atop the N-well, wherein a lateral high field region is generated between the N-well and the P-well and a vertical high field region is generated between the gate and the N-well. A related method is disclosed.Type: GrantFiled: February 8, 2011Date of Patent: January 8, 2013Assignee: International Business Machines CorporationsInventors: William F. Clark, Jr., Yun Shi
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Patent number: 8344447Abstract: A composite semiconductor structure and method of forming the same are provided. The composite semiconductor structure includes a first silicon-containing compound layer comprising an element selected from the group consisting essentially of germanium and carbon; a silicon layer on the first silicon-containing compound layer, wherein the silicon layer comprises substantially pure silicon; and a second silicon-containing compound layer comprising the element on the silicon layer. The first and the second silicon-containing compound layers have substantially lower silicon concentrations than the silicon layer. The composite semiconductor structure may be formed as source/drain regions of metal-oxide-semiconductor (MOS) devices.Type: GrantFiled: April 5, 2007Date of Patent: January 1, 2013Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Hsien-Hsin Lin, Weng Chang, Chien-Chang Su, Kuan-Yu Chen, Hsueh-Chang Sung, Ming-Hua Yu
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Patent number: 8278178Abstract: A method of manufacturing a nonvolatile memory device wherein first gate lines and second gate lines are formed over a semiconductor substrate. The first gate lines are spaced-from each other at a first width, the second gate lines are spaced-from each other at a second width, and the first width is wider than the second width. A first ion implantation process of forming first junction regions in the semiconductor substrate between the first gate lines and the second gate lines is performed. A second ion implantation process of forming second junction regions in the respective first junction regions between the first gate lines is then performed.Type: GrantFiled: September 18, 2009Date of Patent: October 2, 2012Assignee: Hynix Semiconductor Inc.Inventors: Hee Youl Lee, Jae Yoon Noh
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Publication number: 20120228722Abstract: An integrated circuit containing an array of SRAM cells with T-shaped contacts in the inverters, in which drain connecting segments may extend beyond gate connecting segments by a distance greater than 10 percent of a separation distance between ends of opposite drain connecting segments. The drain connecting segments may also extend beyond gate connecting segments by a distance greater than one-third of the width of the gate connecting segments. A process of forming an integrated circuit containing an array of SRAM cells with T-shaped contacts in which drain connecting segments may extend beyond gate connecting segments by a distance greater than 10 percent of a separation distance between ends of opposite drain connecting segments. A process may also form the drain connecting segments to extend beyond gate connecting segments by greater than one-third of the width of the gate connecting segments.Type: ApplicationFiled: May 25, 2012Publication date: September 13, 2012Applicant: Texas Instruments IncorporatedInventors: Theodore W. Houston, Thomas J. Aton, Scott W. Jessen
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Patent number: 8255707Abstract: In one embodiment, a method includes powering on a testing system, whereby a unit present signal is included in the system, the unit present signal communicating to a management complex unit (MCU) that a unit under test (UUT) has been inserted into a corresponding architecture, the signal being sent through a relay such that it can be sent or connected at a later time. The UUT is installed in the system and a programming protocol is initiated. The system is then powered off, whereby the unit present signal is set to open and the system is subsequently powered on. When the UUT is plugged in, the MCU does not see it. The system can include a second relay that allows power being fed to the UUT to be broken such that when the UUT is subsequently powered up, the board is reset and not removed from the architecture.Type: GrantFiled: March 6, 2008Date of Patent: August 28, 2012Assignee: Fujitsu LimitedInventor: Gregory L. Crafton
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Patent number: 8203171Abstract: A graphene-based memristor includes a first electrode, a defective graphene layer adjacent the first electrode, a memristive material that includes a number of ions adjacent the defective graphene layer, a second electrode adjacent the memristive material, and a voltage source that generates an electric field between the first and the second electrodes. Under the influence of the electric field, ions in the memristive material form an ion conducting channel between the second electrode and the defective graphene layer.Type: GrantFiled: April 5, 2010Date of Patent: June 19, 2012Assignee: Hewlett-Packard Development Company, L.P.Inventors: Joshua Yang, Feng Miao, Wei Wu, Shih-Yuan Wang, R. Stanley Williams
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Patent number: 8188549Abstract: A metal supplying an N well voltage is provided in a first metal interconnection layer. The metal is electrically coupled to an active layer provided in an N well region by shared contacts so that the N well voltage is supplied to the N well region. A metal supplying a P well voltage is provided in a third metal interconnection layer. The metal supplying the N well voltage is formed using a metal in the first metal interconnection layer and thus does not require a piling region to the underlayer, and only a piling region to the underlayer of the metal for the P well voltage needs to be secured. Therefore, the length in the Y direction of a power feed cell can be reduced thereby reducing the layout area of the power feed cell.Type: GrantFiled: January 4, 2011Date of Patent: May 29, 2012Assignee: Renesas Electronics CorporationInventor: Yuichiro Ishii
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Patent number: 8183639Abstract: A dual port static random access memory cell has pull-down transistors, pull-up transistors, and pass transistors. A first active region has a first pull-down transistor coupled to a true data node, a second pull-down transistor coupled to a complementary data node; a first pass transistor coupled to the true data node, and a second pass transistor coupled to the complementary data node. A second active region has the same size and shape as the first active region and has a third pull-down transistor coupled in parallel to the first-pull down transistor, a fourth pull-down transistor coupled in parallel to the second pull-down transistor; a third pass transistor coupled to the true data node, and a fourth pass transistor coupled to the complementary data node. A first pull-up transistor and a second pull-up transistor are located between the first and second active regions.Type: GrantFiled: October 7, 2010Date of Patent: May 22, 2012Assignee: Freescale Semiconductor, Inc.Inventors: Pierre Malinge, Jack M. Higman, Sanjay R. Parihar
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Patent number: 8173532Abstract: A semiconductor structure and a method for forming the same. The method includes providing a semiconductor structure which includes a semiconductor substrate. The semiconductor substrate includes (i) a top substrate surface which defines a reference direction perpendicular to the top substrate surface and (ii) first and second semiconductor body regions. The method further includes forming (i) a gate divider region and (ii) a gate electrode layer on top of the semiconductor substrate. The gate divider region is in direct physical contact with gate electrode layer. A top surface of the gate electrode layer and a top surface of the gate divider region are essentially coplanar. The method further includes patterning the gate electrode layer resulting in a first gate electrode region and a second gate electrode region. The gate divider region does not overlap the first and second gate electrode regions in the reference direction.Type: GrantFiled: July 30, 2007Date of Patent: May 8, 2012Assignee: International Business Machines CorporationInventors: Robert C. Wong, Haining S. Yang
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Patent number: 8169036Abstract: A semiconductor integrated circuit device having a control signal system for avoiding failure to check an indefinite signal propagation prevention circuit, for facilitating a check included in an automated tool, and for facilitating a power shutdown control inside a chip. In the semiconductor integrated circuit device, power shutdown priorities are provided by independent power domains (Area A to Area I). A method for preventing a power domain having a lower priority from being turned OFF when a circuit having a high priority is turned ON is also provided.Type: GrantFiled: September 2, 2011Date of Patent: May 1, 2012Assignee: Renesas Electronics CorporationInventors: Yusuke Kanno, Hiroyuki Mizuno, Yoshihiko Yasu, Kenji Hirose, Takahiro Irita
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Publication number: 20120061770Abstract: A method of manufacturing a nonvolatile memory device wherein first gate lines and second gate lines are formed over a semiconductor substrate. The first gate lines are spaced-from each other at a first width, the second gate lines are spaced-from each other at a second width, and the first width is wider than the second width. A first ion implantation process of forming first junction regions in the semiconductor substrate between the first gate lines and the second gate lines is performed. A second ion implantation process of forming second junction regions in the respective first junction regions between the first gate lines is then performed.Type: ApplicationFiled: November 16, 2011Publication date: March 15, 2012Applicant: HYNIX SEMICONDUCTOR INC.Inventors: Hee Youl Lee, Jae Yoon Noh
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Patent number: 8134213Abstract: Disclosed is a static random access memory (SRAM), which includes first and second access transistors composed of metal oxide semiconductor (MOS) transistors, first and second drive transistors composed of MOS transistors, and first and second p-channel thin film transistors (TFTs) used as pull-up devices. The SRAM includes a ground potential layer disposed as a common source of the first and second drive transistors, and formed by implanting a dopant into a semiconductor substrate, a power supply potential layer connected with sources of the first and second p-channel TFTs, and an insulating layer formed on the substrate and interposed between the ground potential layer and the power supply potential layer.Type: GrantFiled: December 28, 2006Date of Patent: March 13, 2012Assignee: Dongbu Electronics Co., Ltd.Inventor: Sung Hee Park
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Publication number: 20120056273Abstract: A semiconductor device includes: a first transistor formed on a semiconductor substrate; and a second transistor formed above the semiconductor substrate with an insulation film interposed therebetween. The first transistor includes a first body region formed on a surface of the semiconductor substrate, and a first source region and a first drain region formed so as to sandwich the first body region, the second transistor includes a semiconductor layer formed on the insulation film, a second body region formed in a part of the semiconductor layer, a second source region and a second drain region formed so as to sandwich the second body region in the semiconductor layer, agate insulation film formed on the body region of the semiconductor layer, and agate electrode formed on the gate insulation film, and the second drain region is disposed on the first body region.Type: ApplicationFiled: August 26, 2011Publication date: March 8, 2012Applicant: SONY CORPORATIONInventors: Yuji Ishii, Yuji Ibusuki, Hideki Tanaka, Kentaro Kasai
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Patent number: 8130529Abstract: A semiconductor device has a pair of gate electrodes extending adjacent to and non-parallel to each other, a source and/or drain region located between the pair of gate electrodes for forming a pair of transistors with the gate electrodes, and a contact electrode disposed between the pair of gate electrodes in contact with the source and/or drain region in a contact area so that the center of the contact area is shifted from the center of the source and/or drain region in a direction along which the distance between the pair of gate electrodes becomes greater.Type: GrantFiled: November 19, 2008Date of Patent: March 6, 2012Assignee: Fujitsu Semiconductor LimitedInventor: Takuji Tanaka
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Patent number: 8129790Abstract: A structure and method for forming SRAMs on HOT substrates with STI is described. Logic circuits may also be fabricated on the same chip with some devices on the SOI regions and other devices on the SOI regions.Type: GrantFiled: March 13, 2009Date of Patent: March 6, 2012Assignee: Kabushiki Kaisha ToshibaInventor: Gaku Sudo
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Patent number: 8120092Abstract: First gate electrodes of memory cell transistors are formed in series with each other on a semiconductor substrate. A second gate electrode of a first selection transistor is formed adjacent to one end of the first electrodes. A third gate electrode of a second selection transistor is formed adjacent to the second electrode. A fourth gate electrode of a peripheral transistor is formed on the substrate. First, second, and third sidewall films are formed on side surfaces of the second, third, and fourth gate electrodes, respectively. A film thickness of the third sidewall film is larger than that of the first and second sidewall films. A space between the first electrode and the second electrode is larger than a space between the first electrodes, and a space between the second electrode and the third electrode is larger than a space between the first electrode and the second electrode.Type: GrantFiled: September 23, 2009Date of Patent: February 21, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Atsuhiro Sato, Fumitaka Arai
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Patent number: 8110467Abstract: Multiple threshold voltage (Vt) field-effect transistor (FET) devices and techniques for the fabrication thereof are provided. In one aspect, a FET device is provided including a source region; a drain region; at least one channel interconnecting the source and drain regions; and a gate, surrounding at least a portion of the channel, configured to have multiple threshold voltages due to the selective placement of at least one band edge metal throughout the gate.Type: GrantFiled: April 21, 2009Date of Patent: February 7, 2012Assignee: International Business Machines CorporationInventors: Josephine B. Chang, Leland Chang, Renee T. Mo, Vijay Narayanan, Jeffrey W. Sleight
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Patent number: 8101987Abstract: A semiconductor device is disclosed. The semiconductor device includes: a first electrode, disposed over a first region of a substrate; and a conductive layer, disposed over the substrate, including a second electrode disposed above the first electrode, wherein the second electrode comprises a mesh main part having a plurality of openings, and a plurality of extending parts, wherein the extending parts are connected to the mesh main part at periphery of the openings and extend toward a surface of the first electrode.Type: GrantFiled: July 30, 2010Date of Patent: January 24, 2012Assignee: United Microelectronics Corp.Inventor: Hui-Shen Shih
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Patent number: 8097518Abstract: There is provided a semiconductor device including a semiconductor substrate (10), a high concentration diffusion region (22) formed within the semiconductor substrate (10), a first low concentration diffusion region (24) that has a lower impurity concentration than the high concentration diffusion region (22) and is provided under the high concentration diffusion region (22), and a bit line(30) that includes the high concentration diffusion region (22) and the first low concentration diffusion region (24) and serves as a source region and a drain region, and a manufacturing method therefor. Reduction of source-drain breakdown voltage of the transistor is suppressed, and a low-resistance bit line can be formed. Thus, a semiconductor device that can miniaturize memory cells and a manufacturing method therefor can be provided.Type: GrantFiled: October 6, 2010Date of Patent: January 17, 2012Assignee: Spansion LLCInventor: Masatomi Okanishi
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Patent number: 8013399Abstract: A static random access memory cell which, on a substrate surmounted by a stack of layers, including: a first plurality of transistors situated at a given level of the stack of which at least one first access transistor and at least one second access transistor are connected to a word line and are arranged between a first bit line and a first storage node and a second bit line and a second storage node, respectively; and a second plurality of transistors forming a flip-flop and situated at least one other level of the stack, beneath said given level, wherein the transistors of the second plurality of transistors each comprising a gate electrode situated opposite a channel region of a transistor of the first plurality of transistors and separated from this channel region by an insulating region provided to enable coupling of said gate electrode and said channel region.Type: GrantFiled: May 15, 2009Date of Patent: September 6, 2011Assignee: Commissariat a l'Energie AtomiqueInventors: Olivier Thomas, Perrine Batude, Arnaud Pouydebasque, Maud Vinet
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Patent number: 8008733Abstract: Disclosed herein is a semiconductor device having a power cutoff transistor including a semiconductor substrate of a first conductivity type; and first and second wells of the first conductivity type formed to be spaced from each other in the semiconductor substrate.Type: GrantFiled: May 13, 2009Date of Patent: August 30, 2011Assignee: Sony CorporationInventor: Masakatsu Nakai
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Publication number: 20110204452Abstract: An integrated circuit containing an array of SRAM cells with T-shaped contacts in the inverters, in which drain connecting segments may extend beyond gate connecting segments by a distance greater than 10 percent of a separation distance between ends of opposite drain connecting segments. The drain connecting segments may also extend beyond gate connecting segments by a distance greater than one-third of the width of the gate connecting segments. A process of forming an integrated circuit containing an array of SRAM cells with T-shaped contacts in which drain connecting segments may extend beyond gate connecting segments by a distance greater than 10 percent of a separation distance between ends of opposite drain connecting segments. A process may also form the drain connecting segments to extend beyond gate connecting segments by greater than one-third of the width of the gate connecting segments.Type: ApplicationFiled: March 10, 2011Publication date: August 25, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Theodore W. Houston, Thomas J. Aton, Scott W. Jessen
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Publication number: 20110186936Abstract: a method for producing a semiconductor device provided in such a manner that a first layer and a second layer are laminated to ensure that their TSVs are arranged in almost a straight line, including: first layer production steps including steps of preparing a substrate, forming a transistor of an input/output circuit on an upper surface of the substrate, forming an insulation layer so as to cover the transistor, and forming a TSV in the insulation layer; second layer production steps including steps of preparing a substrate, forming a transistor of a logic circuit on an upper surface of the substrate, forming an insulation layer so as to cover the transistor, and forming a TSV in the insulation layer; a connection step of connecting surfaces of the first layer and the second layer on a side opposite to substrates of the first layer and the second layer to ensure that the TSV of the first layer and the TSV of the second layer are arranged in almost a straight line; and a step of removing the substrate of theType: ApplicationFiled: February 2, 2011Publication date: August 4, 2011Inventors: Toshiaki IWAMATSU, Yuichi Hirano
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Patent number: 7973371Abstract: A static random access memory (SRAM) cell includes a first well region of a first conductivity type, a second well region of the first conductivity type, formed in a location different from a location where the first well region is formed, and a third well region of a second conductivity type, which is located between the first well region and the second well region. The memory cell further includes a first tap diffused layer of the first conductivity type for supplying a potential to the first well region, a second tap diffused layer of the first conductivity type for supplying the potential to the second well region, the first and second tap diffused layers being arranged substantially on a diagonal line in the layout of the SRAM cell, and a metal interconnection connected to the first and second tap diffused layers, the metal interconnection passing on the third well region in the SRAM cell.Type: GrantFiled: September 30, 2008Date of Patent: July 5, 2011Assignee: Renesas Electronics CorporationInventors: Hiroshi Furuta, Junji Monden, Ichiro Mizuguchi
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Publication number: 20110156168Abstract: An integrated circuit containing an array of SRAM cells with T-shaped contacts in the inverters, in which drain connecting segments may extend beyond gate connecting segments by a distance greater than 10 percent of a separation distance between ends of opposite drain connecting segments. The drain connecting segments may also extend beyond gate connecting segments by a distance greater than one-third of the width of the gate connecting segments. A process of forming an integrated circuit containing an array of SRAM cells with T-shaped contacts in which drain connecting segments may extend beyond gate connecting segments by a distance greater than 10 percent of a separation distance between ends of opposite drain connecting segments. A process may also form the drain connecting segments to extend beyond gate connecting segments by greater than one-third of the width of the gate connecting segments.Type: ApplicationFiled: March 10, 2011Publication date: June 30, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Theodore W. Houston, Thomas J. Aton, Scott W. Jessen
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Patent number: 7964920Abstract: A semiconductor device can include at least a first diffusion region formed by doping a semiconductor substrate and at least a second diffusion region formed by doping the semiconductor substrate that is separated from the first diffusion region by an isolation region. At least a first conductive line can comprise a semiconductor material formed over and in contact with the first diffusion region and the second diffusion region. A portion of the first conductive line in contact with the first diffusion region is doped to an opposite conductivity type as the first diffusion region. At least a second conductive line comprising a semiconductor material is formed in parallel with the first conductive line and over and in contact with the first diffusion region and the second diffusion region. A portion of the second conductive line can be in contact with the first diffusion region and doped to a same conductivity type as the first diffusion region.Type: GrantFiled: February 26, 2009Date of Patent: June 21, 2011Assignee: SuVolta, Inc.Inventor: Madhukar B. Vora
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Patent number: 7936024Abstract: A method of forming a semiconductor device may include forming an interlayer insulating layer on a semiconductor substrate, and the interlayer insulating layer may have a contact hole therein exposing a portion of the semiconductor substrate. A single crystal semiconductor plug may be formed in the contact hole and on portions of the interlayer insulating layer adjacent the contact hole opposite the semiconductor substrate, and portions of the interlayer insulating layer opposite the semiconductor substrate may be free of the single crystal semiconductor plug. Portions of the single crystal semiconductor plug in the contact hole may be removed while maintaining portions of the single crystal semiconductor plug on portions of the interlayer insulating layer adjacent the contact hole as a single crystal semiconductor contact pattern.Type: GrantFiled: September 4, 2008Date of Patent: May 3, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Hyun-Su Kim, Gil-Heyun Choi, Jong-Ho Yun, Sug-Woo Jung, Eun-Ji Jung
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Publication number: 20110079858Abstract: A semiconductor memory device having high integration, low power consumption and high operation speed. The memory device includes a sense amplifier circuit having plural pull-down circuits and a pull-up circuit. A transistor constituting one of the plural pull-down circuits has a larger constant than that of a transistor constituting the other pull-down circuits, for example, a channel length and a channel width. The pull-down circuit having the larger constant transistor is activated earlier than the other pull-down circuits and the pull-up circuit, which are activated to conduct reading. The data line and the earlier driven pull-down circuit are connected by an NMOS transistor and the NMOS transistor is activated or inactivated to control the activation or inactivation of the pull-down circuit.Type: ApplicationFiled: December 14, 2010Publication date: April 7, 2011Inventors: Satoru Akiyama, Tomonori Sekiguchi, Riichiro Takemura, Hiroaki Nakaya, Shinichi Miyatake, Yuko Watanabe
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Publication number: 20110068413Abstract: Circuits and methods for providing a dual gate oxide (DGO) embedded SRAM with additional logic portions, where the logic and the embedded SRAM have NMOS transistors having a common gate dielectric thickness but have different lightly doped drain (LDD) implantations formed using different LDD masks to provide optimum transistor operation. In an embodiment, a first embedded SRAM is a single port device and a second embedded SRAM is a dual port device having a separate read port. In certain embodiments, the second SRAM includes NMOS transistors having LDD implants formed using the logic portion LDD mask. Transistors formed with the logic portion LDD mask are faster and have lower Vt than transistors formed using a SRAM LDD mask. Dual core devices having multiple embedded SRAM arrays are disclosed. Methods for making the embedded SRAM are also disclosed.Type: ApplicationFiled: July 1, 2010Publication date: March 24, 2011Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventor: Jhon-Jhy Liaw
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Patent number: 7888748Abstract: A metal supplying an N well voltage is provided in a first metal interconnection layer. The metal is electrically coupled to an active layer provided in an N well region by shared contacts so that the N well voltage is supplied to the N well region. A metal supplying a P well voltage is provided in a third metal interconnection layer. The metal supplying the N well voltage is formed using a metal in the first metal interconnection layer and thus does not require a piling region to the underlayer, and only a piling region to the underlayer of the metal for the P well voltage needs to be secured. Therefore, the length in the Y direction of a power feed cell can be reduced thereby reducing the layout area of the power feed cell.Type: GrantFiled: June 9, 2010Date of Patent: February 15, 2011Assignee: Renesas Electronics CorporationInventor: Yuichiro Ishii
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Publication number: 20110031473Abstract: Nanowire-based devices are provided. In one aspect, a SRAM cell includes at least one pair of pass gates and at least one pair of inverters formed adjacent to one another on a wafer. Each pass gate includes one or more device layers each having a source region, a drain region and a plurality of nanowire channels connecting the source region and the drain region and a gate common to each of the pass gate device layers surrounding the nanowire channels. Each inverter includes a plurality of device layers each having a source region, a drain region and a plurality of nanowire channels connecting the source region and the drain region and a gate common to each of the inverter device layers surrounding the nanowire channels.Type: ApplicationFiled: August 6, 2009Publication date: February 10, 2011Applicant: International Business Machines CorporationInventors: Josephine Chang, Paul Chang, Michael A. Guillorn, Jeffrey Sleight
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Patent number: 7880239Abstract: By providing a body controlled double channel transistor, increased functionality in combination with enhanced stability may be accomplished. For instance, flip flop circuits usable for static RAM cells may be formed on the basis of the body controlled double channel transistor, thereby reducing the number of transistors required per cell, which may result in increased information density.Type: GrantFiled: June 23, 2008Date of Patent: February 1, 2011Assignee: GLOBALFOUNDRIES Inc.Inventor: Frank Wirbeleit
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Patent number: RE43922Abstract: A static random access memory (SRAM) is laid out to be balanced so that, when power is applied to the SRAM, the cells of the SRAM have no preferred logic state, In addition, the SRAM is fabricated in a process the emphasizes mismatches so that each individual cell assumes a non-random logic state when power is applied.Type: GrantFiled: January 18, 2011Date of Patent: January 15, 2013Assignee: National Semiconductor CorporationInventor: Elroy Lucero