Having Well Structure Of Opposite Conductivity Type Patents (Class 438/227)
  • Patent number: 11437241
    Abstract: An apparatus and methods for selectively etching a particular layer are disclosed. The apparatus and methods are directed towards maintaining the etch rate of the particular layer, while keeping intact a non-etched layer. A gas mixture may be flowed onto the substrate in separate loops having an oxide layer and an oxynitride layer as an etch layer and a nitride layer as a non-etched layer, for example. A reaction between the resulting gas mixture and the particular layer takes place, resulting in etching of the oxide layer and the oxynitride layer while maintaining the nitride layer in the above example.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: September 6, 2022
    Assignee: ASM IP Holding B.V.
    Inventors: Fei Wang, Woo Jung Shin
  • Patent number: 11367569
    Abstract: Embodiments of the invention are directed to a method of fabricating a yoke arrangement of an inductor. A non-limiting example method includes forming a dielectric layer across from a major surface of a substrate. The method further includes configuring the dielectric layer such that it imparts a predetermined dielectric layer compressive stress on the substrate. A magnetic stack is formed on an opposite side of the dielectric layer from the substrate, wherein the magnetic stack includes one or more magnetic layers alternating with one or more insulating layers. The method further includes configuring the magnetic stack such that it imparts a predetermined magnetic stack tensile stress on the dielectric layer, wherein a net effect of the predetermined dielectric layer compressive stress and the predetermined magnetic stack tensile stress on the substrate is insufficient to cause a portion of the major surface of the substrate to be substantially non-planar.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: June 21, 2022
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hariklia Deligianni, Bruce B. Doris, Eugene J. O'Sullivan, Naigang Wang
  • Patent number: 10825896
    Abstract: Disclosed is a transistor including a substrate, first and second type wells in contact with each other on the substrate; and a breakdown voltage improving region including vertical high concentration doped regions according to first and second types vertically in contact from upper surfaces of the first and second type wells to an upper surface of the substrate in a portion where the first and second type wells are in contact with each other.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: November 3, 2020
    Assignee: SOGANG UNIVERSITY RESEARCH FOUNDATION
    Inventors: Kwang Soo Kim, Dong Woo Bae
  • Patent number: 10790279
    Abstract: The present disclosure relates to an integrated circuit (IC) and a method of formation. In some embodiments, a low voltage transistor device is disposed in a low voltage region defined on a substrate. The low voltage transistor device comprises a low voltage gate electrode and a first gate dielectric separating the low voltage gate electrode from the substrate. A high voltage transistor device is disposed in a high voltage region defined on the substrate. The high voltage transistor device comprises a high voltage gate electrode and a high voltage gate dielectric separating the high voltage gate electrode from the substrate. A first interlayer dielectric layer is disposed over the substrate surrounding the low voltage transistor device and the high voltage transistor device. The high voltage gate electrode is disposed on the first interlayer dielectric layer and separated from the substrate by the first interlayer dielectric layer.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: September 29, 2020
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Kong-Beng Thei, Chien-Chih Chou, Fu-Jier Fan, Hsiao-Chin Tuan, Yi-Huan Chen, Alexander Kalnitsky, Yi-Sheng Chen
  • Patent number: 9997539
    Abstract: A fully-depleted silicon-on-insulator (FDSOI) semiconductor structure includes: a first PFET, a second PFET, and a third PFET each having a different threshold voltage and each being over an n-well that is biased to a first voltage; and a first NFET, a second NFET, and a third NFET each having a different threshold voltage and each being over a p-type substrate that is biased to a second voltage. The second voltage is different than the first voltage.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: June 12, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Terence B. Hook, Horacio Mendez
  • Patent number: 9496221
    Abstract: The present disclosure relates to a method of fabricating a semiconductor device. A semiconductor device includes a bond pad and a fuse layer. The bond pad includes a coating on an upper surface. A dielectric layer is formed over the bond pad and the fuse layer. A passivation layer is formed over the dielectric layer. An etch is performed to form a bond pad opening and a fuse opening. The etch is performed using only a single mask. The fuse opening defines a fuse window. The upper surface of the bond pad is exposed by substantially removing the coating from the entire upper surface.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: November 15, 2016
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Tai-I Yang, Marcus Yang, Chih-Hao Lin, Hong-Seng Shue, Ruei-Hung Jang
  • Patent number: 9478443
    Abstract: According to an exemplary embodiment, a semiconductor package is provided. The semiconductor package includes: a chip having a plurality of joint pads; a component having a plurality of metal caps on one side and having a grinded surface on the other side, wherein the metal caps are in contact with the joint pads of the chip.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: October 25, 2016
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: An-Jhih Su, Hsien-Wei Chen
  • Patent number: 9306036
    Abstract: Approaches for protecting a semiconductor device (e.g., a fin field effect transistor device (FinFET)) using a nitride spacer are provided. Specifically, a nitride spacer is formed over an oxide and a set of fins of the FinFET device to mitigate damage during subsequent processing. The nitride spacer is deposited before the block layers to protect the oxide on top of a set of gates in an open area of the FinFET device uncovered by a photoresist. The oxide on top of each gate will be preserved throughout all of the block layers to provide hardmask protection during subsequent source/drain epitaxial layering. Furthermore, the fins that are open and uncovered by the photoresist or the set of gates remain protected by the nitride spacer. Accordingly, fin erosion caused by amorphization of the fins exposed to resist strip processes is prevented, resulting in improved device yield.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: April 5, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventor: Michael Ganz
  • Patent number: 9159803
    Abstract: A device includes a semiconductor substrate, a drift region in the semiconductor substrate and having a first conductivity type, an isolation region within the drift region, and around which charge carriers drift on a path through the drift region during operation, and a protection region adjacent the isolation region in the semiconductor substrate, having a second conductivity type, and disposed along a surface of the semiconductor substrate.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: October 13, 2015
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Won Gi Min, Hongning Yang, Jiangkai Zuo
  • Patent number: 9142566
    Abstract: A method and apparatus are described for integrating high voltage (HV) transistor devices and medium voltage or dual gate oxide (DGO) transistor devices with low voltage (LV) core transistor devices on a single substrate, where each high voltage transistor device (160) includes a metal gate (124), an upper high-k gate dielectric layer (120), a middle gate dielectric layer (114) formed with a relatively lower high-k dual gate oxide layer, and a lower high voltage gate dielectric stack (108, 110) formed with one or more low-k gate oxide layers (22), where each DGO transistor device (161) includes a metal gate (124), an upper high-k gate dielectric layer (120), and a middle gate dielectric layer (114) formed with a relatively lower high-k dual gate oxide layer, and where each core transistor device (162) includes a metal gate (124), an upper high-k gate dielectric layer (120), and a base oxide layer (118) formed with one or more low-k gate oxide layers.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: September 22, 2015
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Cheong Min Hong, Asanga H. Perera, Sung-Taeg Kang
  • Patent number: 9034712
    Abstract: A lateral diffused metal-oxide-semiconductor field effect transistor (LDMOS transistor) employs a stress layer that enhances carrier mobility (i.e., on-current) while also maintaining a high breakdown voltage for the device. High breakdown voltage is maintained, because an increase in doping concentration of the drift region is minimized. A well region and a drift region are formed in the substrate adjacent to one another. A first shallow trench isolation (STI) region is formed on and adjacent to the well region, and a second STI region is formed on and adjacent to the drift region. A stress layer is deposited over the LDMOS transistor and in the second STI region, which propagates compressive or tensile stress into the drift region, depending on the polarity of the stress layer. A portion of the stress layer can be removed over the gate to change the polarity of stress in the inversion region below the gate.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: May 19, 2015
    Assignee: International Business Machines Corporation
    Inventors: Renata Camillo-Castillo, Erik M. Dahlstrom, Robert J. Gauthier, Jr., Ephrem G. Gebreselasie, Richard A. Phelps, Jed H. Rankin, Yun Shi
  • Patent number: 8890259
    Abstract: An SCR apparatus includes an SCR structure and a first N injection region. The SCR structure includes a P+ injection region, a P well, an N well and a first N+ injection region, the first N injection region is located under an anode terminal of the P+ injection region of the SCR structure. A method for adjusting a sustaining voltage therefor is provided as well.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: November 18, 2014
    Assignees: CSMC Technologies Fab1 Co., Ltd., CSMC Technologies FAB2 Co., Ltd.
    Inventors: Meng Dai, Zhongyu Lin
  • Patent number: 8735238
    Abstract: Methods and devices for forming both high-voltage and low-voltage transistors on a common substrate using a reduced number of processing steps are disclosed. An exemplary method includes forming at least a first high-voltage transistor well and a first low-voltage transistor well on a common substrate separated by an isolation structure extending a first depth into the substrate, using a first mask and first implantation process to simultaneously implant a doping material of a first conductivity type into a channel region of the low-voltage transistor well and a drain region for the high-voltage transistor well.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: May 27, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: ChanSam Chang, Shigenobu Maeda, HeonJong Shin, ChangBong Oh
  • Patent number: 8658503
    Abstract: A semiconductor device includes: a silicon carbide substrate having first and second main surfaces; a first silicon carbide layer provided on the first main surface of the silicon carbide substrate; first silicon carbide regions formed on a surface of the first silicon carbide layer; second and third silicon carbide regions formed on respective surfaces of the first silicon carbide regions; a fourth silicon carbide region formed between facing first silicon carbide regions with the first silicon carbide layer therebetween; a gate insulating film formed continuously on surfaces of the first silicon carbide regions, the first silicon carbide layer, and the fourth silicon carbide region; a gate electrode formed on the gate insulating film; an interlayer insulating film covering the gate electrode; a first electrode electrically connected to the second and third silicon carbide regions; and a second electrode formed on the second main surface of the silicon carbide substrate.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: February 25, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroshi Kono, Takashi Shinohe
  • Patent number: 8633071
    Abstract: A semiconductor structure and method of manufacturing is provided. The method of manufacturing includes forming shallow trench isolation (STI) in a substrate and providing a first material and a second material on the substrate. The first material and the second material are mixed into the substrate by a thermal anneal process to form a first island and second island at an nFET region and a pFET region, respectively. A layer of different material is formed on the first island and the second island. The STI relaxes and facilitates the relaxation of the first island and the second island. The first material may be deposited or grown Ge material and the second material may deposited or grown Si:C or C. A strained Si layer is formed on at least one of the first island and the second island.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: January 21, 2014
    Assignee: International Business Machines Corporation
    Inventors: Duresti Chidambarrao, Omer H. Dokumaci, Oleg G. Gluschenkov
  • Patent number: 8574973
    Abstract: An integrated circuit structure having an LDMOS transistor and a CMOS transistor includes a p-type substrate having a surface, an n-well implanted in the substrate, the first n-well providing a CMOS n-well, a CMOS transistor including a CMOS source with a first p+ region implanted in the n-well, a CMOS drain with a second p+ region implanted in the n-well, and a CMOS gate between the first p+ region and the second p+ region, and an LDMOS transistor including an LDMOS source with an LDMOS source including a p-body implanted in the n-well, a third p+ region implanted in the p-body, and a first n+ region implanted in the p-body, an LDMOS drain including an n-doped shallow drain implanted in the n-well, and a second n+ region implanted in the n-doped shallow drain, and an LDMOS gate between the third p+ region and the second n+ region.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: November 5, 2013
    Assignee: Volterra Semiconductor Corporation
    Inventors: Budong You, Marco A. Zuniga
  • Patent number: 8507356
    Abstract: Semiconductor device manufacturing method includes forming a first mask, having a first opening to implant ion into semiconductor substrate and being used to form first layer well, on semiconductor substrate; forming first-layer well having first and second regions by implanting first ion into semiconductor substrate using first mask; forming second mask, having second opening to implant ion into semiconductor substrate and being used to form second layer well, on semiconductor substrate; and forming second-layer well below first layer well by implanting second ion into semiconductor substrate using second mask. First region is formed closer to an edge of first-layer well than second region. Upon implanting first ion, first ion deflected by first inner wall of first mask is supplied to first region. Upon implanting second ion, second ion deflected by second inner wall of second mask is supplied to second region.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: August 13, 2013
    Assignee: Elpida Memory, Inc.
    Inventor: Noriaki Ikeda
  • Patent number: 8501567
    Abstract: The present invention discloses a manufacturing method of a high voltage device. The high voltage device is formed in a first conductive type substrate. The high-voltage device includes: a second conductive type buried layer; a first conductive type high voltage well; and a second conductive type body. The high voltage well is formed by the same step for forming a first conductive type well or a first conductive type channel stop layer of a low voltage device formed in the same substrate. The body is formed by the same step for forming a second conductive type well of the low voltage device.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: August 6, 2013
    Assignee: Richtek Technology Corporation, R.O.C.
    Inventors: Tsung-Yi Huang, Yuh-Chyuan Wang
  • Patent number: 8410568
    Abstract: A substrate section that is at least partially fabricated to include contact elements and materials. The substrate section includes doped regions that have a heavily doped N-type region and a heavily doped P-type region adjacent to one another. An exterior surface of the substrate has a topography that includes a light-transparent region in which light, from a light source, is able to reach a surface of the substrate. An application of light onto the light transparent region is sufficient to cause a voltage potential to form across a junction of the heavily doped regions. The substrate section may further comprise one or more electrical contacts, positioned on the substrate section to conduct current, resulting from the voltage potential created with application of light onto the light transparent region, to a circuit on the semiconductor substrate.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: April 2, 2013
    Assignee: Tau-Metrix, Inc.
    Inventors: Gary Steinbrueck, James S. Vickers, Mario M. Pelella, Majid Aghababazadeh, Nader Pakdaman
  • Patent number: 8405148
    Abstract: An integrated circuit structure having an LDMOS transistor and a CMOS transistor includes a p-type substrate having a surface, an n-well implanted in the substrate, the first n-well providing a CMOS n-well, a CMOS transistor including a CMOS source with a first p+ region implanted in the n-well, a CMOS drain with a second p+ region implanted in the n-well, and a CMOS gate between the first p+ region and the second p+ region, and an LDMOS transistor including an LDMOS source with an LDMOS source including a p-body implanted in the n-well, a third p+ region implanted in the p-body, and a first n+ region implanted in the p-body, an LDMOS drain including an n-doped shallow drain implanted in the n-well, and a second n+ region implanted in the n-doped shallow drain, and an LDMOS gate between the third p+ region and the second n+ region.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: March 26, 2013
    Assignee: Volterra Semiconductor Corporation
    Inventors: Budong You, Marco A. Zuniga
  • Patent number: 8325516
    Abstract: A split gate memory cell. First and second well regions of respectively first and second conductivity types are formed in the substrate. A floating gate is disposed on a junction of the first and second well regions and insulated from the substrate. A control gate is disposed over the sidewall of the floating gate and insulated from the substrate and the floating gate and partially extends to the upper surface of the floating gate. A doping region of the first conductivity type is formed in the second well region. The first well region and the doping region respectively serve as source and drain regions of the split gate memory cell.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: December 4, 2012
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Yue-Der Chih, Shine Chung, Wen-Ting Chu
  • Patent number: 8202775
    Abstract: A process of forming an electronic device can include providing a workpiece comprising a substrate, including an underlying doped region, and a semiconductor portion overlying the underlying doped region, wherein the semiconductor portion has a primary surface spaced apart from the underlying doped region. The process can further include forming a vertically-oriented conductive region extending from the primary surface towards the underlying doped region, forming a horizontally-oriented doped region adjacent to the primary surface, and forming a conductive electrode over, spaced-apart from, and electrically insulated from the vertically-oriented doped region. The process can still further include forming a gate electrode after forming the conductive electrode. The electronic device can include a transistor that includes the underlying doped region, the vertically-oriented conductive region, the horizontally-oriented doped region, and the gate electrode.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: June 19, 2012
    Assignee: Semiconductor Components Industries, LLC
    Inventor: Gary H. Loechelt
  • Patent number: 8124468
    Abstract: An electronic device including an integrated circuit can include a buried conductive region and a semiconductor layer overlying the buried conductive region, and a vertical conductive structure extending through the semiconductor layer and electrically connected to the buried conductive region. The integrated circuit can further include a doped structure having an opposite conductivity type as compared to the buried conductive region, lying closer to an opposing surface than to a primary surface of the semiconductor layer, and being electrically connected to the buried conductive region. The integrated circuit can also include a well region that includes a portion of the semiconductor layer, wherein the portion overlies the doped structure and has a lower dopant concentration as compared to the doped structure. In other embodiment, the doped structure can be spaced apart from the buried conductive region.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: February 28, 2012
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Gary H. Loechelt, Gordon M. Grivna
  • Patent number: 8076716
    Abstract: An electronic device can include a transistor. In an embodiment, the transistor can include a semiconductor layer having a primary surface and a conductive structure. The conductive structure can include a horizontally-oriented doped region lying adjacent to the primary surface, an underlying doped region spaced apart from the primary surface and the horizontally-oriented doped region, and a vertically-oriented conductive region extending through a majority of the thickness of the semiconductor layer and electrically connecting the doped horizontal region and the underlying doped region. In another embodiment, the transistor can include a gate dielectric layer, wherein the field-effect transistor is designed to have a maximum gate voltage of approximately 20 V, a maximum drain voltage of approximately 30 V, and a figure of merit no greater than approximately 30 m?*nC.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: December 13, 2011
    Assignee: Semiconductor Components Industries, LLC
    Inventor: Gary H. Loechelt
  • Patent number: 8071436
    Abstract: Methods and systems for monolithically fabricating a lateral double-diffused MOSFET (LDMOS) transistor having a source, drain, and a gate on a substrate, with a process flow that is compatible with a CMOS process flow are described. In some implementations, a method of fabricating a semiconductor device is provided that includes forming an LDMOS transistor having a first drain with a first drain-side n+ region, a first source with a first source-side n+ region and a first source-side p+ region, and a first gate between the first drain and the first source on the substrate. The method also includes forming an n-type CMOS transistor having a second drain having a second drain-side n+ region, a second source having a second source-side n+ region, and a second gate between the second drain and the second source. In so doing, the LDMOS transistor can be fabricated through a process that can be seamlessly integrated into a sub-micron CMOS process.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: December 6, 2011
    Assignee: Volterra Semiconductor Corporation
    Inventors: Budong You, Marco A. Zuniga
  • Patent number: 8049231
    Abstract: Emissive quantum photonic imagers comprised of a spatial array of digitally addressable multicolor pixels. Each pixel is a vertical stack of multiple semiconductor laser diodes, each of which can generate laser light of a different color. Within each multicolor pixel, the light generated from the stack of diodes is emitted perpendicular to the plane of the imager device via a plurality of vertical waveguides that are coupled to the optical confinement regions of each of the multiple laser diodes comprising the imager device. Each of the laser diodes comprising a single pixel is individually addressable, enabling each pixel to simultaneously emit any combination of the colors associated with the laser diodes at any required on/off duty cycle for each color. Each individual multicolor pixel can simultaneously emit the required colors and brightness values by controlling the on/off duty cycles of their respective laser diodes.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: November 1, 2011
    Assignee: Ostendo Technologies, Inc.
    Inventors: Hussein S. El-Ghoroury, Robert G. W. Brown, Dale A. McNeill, Huibert DenBoer, Andrew J. Lanzone
  • Patent number: 7981739
    Abstract: A method of fabricating an LDMOS transistor and a conventional CMOS transistor together on a substrate. A P-body is implanted into a source region of the LDMOS transistor. A gate oxide for the conventional CMOS transistor is formed after implanting the P-body into the source region of the LDMOS transistor. A fixed thermal cycle associated with forming the gate oxide of the conventional CMOS transistor is not substantially affected by the implanting of the P-body into the source region of the LDMOS transistor.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: July 19, 2011
    Assignee: Volterra Semiconductor Corporation
    Inventors: Budong You, Marco A. Zuniga
  • Patent number: 7972917
    Abstract: A method for manufacturing a semiconductor device is disclosed. The method includes: forming a LDMOS region, an offset drain MOS region, and a CMOS region; simultaneously forming a first well in the LDMOS region and the offset drain MOS region; simultaneously forming a second well in the first well of the LDMOS region and the CMOS region; and forming a second well in the CMOS region, wherein a depth of the first well is larger than a depth of the second well and the second well is a retrograde well formed by a high energy ion implantation method.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: July 5, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Tomoyuki Furuhata, Hideyuki Akanuma, Hiroaki Nitta
  • Patent number: 7968393
    Abstract: 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: Grant
    Filed: February 26, 2009
    Date of Patent: June 28, 2011
    Assignee: SuVolta, Inc.
    Inventor: Madhukar B. Vora
  • Publication number: 20110136306
    Abstract: A method of manufacturing a semiconductor device includes oxidizing a surface of a semiconductor substrate to form a first insulating film covering a first area, a second area, and a third area of the semiconductor substrate; removing the portions of the first insulating film lying on the first area and the second area; oxidizing the surface of the semiconductor substrate to form a second insulating film covering the first area and the second area and further oxidizing the third area covered with the first insulating film; and removing the portion of the second insulating film lying on from the second area and the portion of the first insulating film lying on the third area.
    Type: Application
    Filed: December 1, 2010
    Publication date: June 9, 2011
    Applicant: FUJITSU SEMICONDUCTOR LIMITED
    Inventors: Junichi ARIYOSHI, Kazutaka Yoshizawa
  • Patent number: 7902020
    Abstract: A semiconductor device includes a first conductivity-type deep well formed in a substrate, a plurality of device isolation layers formed in the substrate in which the first conductivity-type deep well is formed, a second conductivity-type well formed on a portion of the first conductivity-type deep well between two of the device isolation layers, a first gate pattern formed over a portion of the second conductivity-type well, a second gate pattern formed over one of the device isolation layers, a source region formed in an upper surface of the second conductivity-type well to adjoin a first side of the first gate pattern, a first drain region formed to include the interface between an upper surface of the second conductivity-type well adjoining a second side of the first gate pattern and an upper surface of the first conductivity-type deep well adjoining the second side of the first gate pattern, and a second drain region formed in an upper surface of the first conductivity-type deep well to be spaced from th
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: March 8, 2011
    Assignee: Dongbu HiTek Co., Ltd.
    Inventor: Il-Yong Park
  • Patent number: 7902017
    Abstract: A process of forming an electronic device can include providing a workpiece comprising a substrate, including an underlying doped region, and a semiconductor layer overlying the underlying doped region, wherein the semiconductor layer has a primary surface spaced apart from the underlying doped region. The process can also include forming a vertically-oriented conductive region extending from the primary surface to the underlying doped region, and forming a horizontally-oriented doped region adjacent to the primary surface. In a finished form of the electronic device, the horizontally-oriented doped region extends further in a lateral direction toward a region where a source region has been or will be formed, as compared to the vertically-oriented conductive region. The electronic device includes a transistor that includes the underlying doped region, the vertically-oriented conductive region, and the horizontally-oriented doped region.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: March 8, 2011
    Assignee: Semiconductor Components Industries, LLC
    Inventor: Gary H. Loechelt
  • Patent number: 7868379
    Abstract: An electronic device can include a transistor. In an embodiment, the transistor can include a semiconductor layer having a primary surface and a conductive structure. The conductive structure can include a horizontally-oriented doped region lying adjacent to the primary surface, an underlying doped region spaced apart from the primary surface and the horizontally-oriented doped region, and a vertically-oriented conductive region extending through a majority of the thickness of the semiconductor layer and electrically connecting the doped horizontal region and the underlying doped region. In another embodiment, the transistor can include a gate dielectric layer, wherein the field-effect transistor is designed to have a maximum gate voltage of approximately 20 V, a maximum drain voltage of approximately 30 V, and a figure of merit no greater than approximately 30 m?*nC.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: January 11, 2011
    Assignee: Semiconductor Components Industries, LLC
    Inventor: Gary H. Loechelt
  • Patent number: 7813711
    Abstract: A method of designing stacked circuits for an integrated circuit is described. In this method, a plurality of devices that are stackable may be determined. Some of those devices, i.e. a subset of stackable devices, may be formed in a deep n-well, thereby allowing that subset of stackable devices to receive an increased supply voltage. The remainder of the stackable devices may be formed in a standard n-well, thereby allowing such devices to receive a standard supply voltage. In one embodiment, the standard supply voltage may be VDD and the increased supply voltage may be 2×VDD. This method may be advantageously used in both the design of stacked circuits for and the implementation of stacked circuits in an integrated circuit.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: October 12, 2010
    Assignee: Atheros Communications, Inc.
    Inventor: Brian J. Kaczynski
  • Patent number: 7754593
    Abstract: A method of manufacturing a semiconductor device comprises forming a gate insulation film on a semiconductor substrate; forming a first gate electrode and a second gate electrode on the gate insulation film; forming a mask material so as to expose an upper surface of the first gate electrode while keeping the second gate electrode covered; etching an upper part of the first gate electrode by using the mask material as a mask; removing the mask material; depositing a metal film on the first gate electrode and the second gate electrode; and siliciding the whole of the first gate electrode and an upper part of the second gate electrode.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: July 13, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Tomohiro Saito
  • Patent number: 7709365
    Abstract: A method for forming a CMOS well structure including forming a plurality of first conductivity type wells over a substrate, each of the plurality of first conductivity type wells formed in a respective opening in a first mask. A cap is formed over each of the first conductivity type wells, and the first mask is removed. Sidewall spacers are formed on sidewalls of each of the first conductivity type wells. A plurality of second conductivity type wells are formed, each of the plurality of second conductivity type wells are formed between respective first conductivity type wells. A plurality of shallow trench isolations are formed between the first conductivity type wells and second conductive type wells. The plurality of first conductivity type wells are formed by a first selective epitaxial growth process, and the plurality of second conductivity type wells are formed by a second selective epitaxial growth process.
    Type: Grant
    Filed: October 23, 2006
    Date of Patent: May 4, 2010
    Assignee: International Business Machines Corporation
    Inventors: Wilfried Haensch, Terence B. Hook, Louis C. Hsu, Rajiv V. Joshi, Werner Rausch
  • Patent number: 7691700
    Abstract: One aspect of the inventors' concept relates to a method of forming a semiconductor device. In this method, a gate structure is formed over a semiconductor body. A source/drain mask is patterned over the semiconductor body implanted source and drain regions are formed that are associated with the gate structure. After forming the implanted source and drain regions, a multi-stage implant is performed on the source and drain regions that comprises at least two implants where the dose and energy of the first implant varies from the dose and energy of the second implant. Other methods and devices are also disclosed.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: April 6, 2010
    Assignee: Texas Instruments Incorporated
    Inventors: Manoj Mehrotra, Stan Ashburn, Shaoping Tang
  • Patent number: 7682895
    Abstract: A method of manufacturing a semiconductor device includes: (A) a wafer process; and (B) a bias application process after the wafer process. The wafer process includes: (a) forming a n-type well in a p-type semiconductor substrate; (b) forming a p-type well in the n-type well; and (c) forming a transistor on the p-type well, the transistor having a n-type source/drain diffusion layer. In the bias application process, a forward bias is applied between the p-type well and the n-type well to move heavy metal ions.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: March 23, 2010
    Assignee: Elpida Memory, Inc.
    Inventor: Kiyonori Oyu
  • Patent number: 7666731
    Abstract: A method of fabricating an LDMOS transistor and a conventional CMOS transistor together on a substrate. A P-body is implanted into a source region of the LDMOS transistor. A gate oxide for the conventional CMOS transistor is formed after implanting the P-body into the source region of the LDMOS transistor. A fixed thermal cycle associated with forming the gate oxide of the conventional CMOS transistor is not substantially affected by the implanting of the P-body into the source region of the LDMOS transistor.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: February 23, 2010
    Assignee: Volterra Semiconductor Corporation
    Inventors: Budong You, Marco A. Zuniga
  • Patent number: 7645664
    Abstract: Layout patterns for the deep well region to facilitate routing the body-bias voltage in a semiconductor device are provided and described. The layout patterns include a diagonal sub-surface mesh structure, an axial sub-surface mesh structure, a diagonal sub-surface strip structure, and an axial sub-surface strip structure. A particular layout pattern is selected for an area of the semiconductor device according to several factors.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: January 12, 2010
    Inventors: Mike Pelham, James B. Burr
  • Patent number: 7632732
    Abstract: A method of manufacturing a transistor may include: forming a first well over a silicon substrate; forming a first mask pattern over the silicon substrate and using the formed first mask pattern to form a second well; removing the first mask pattern; forming a second mask pattern over the silicon substrate and using the formed second mask pattern to form a first drift region; removing the second mask pattern; forming a third mask pattern and using the formed third mask pattern to form a second drift region; removing the third mask pattern; forming a field oxide film over the silicon substrate; and introducing first conductive impurity ions into an upper surface of the silicon substrate by channel ion implantation.
    Type: Grant
    Filed: December 28, 2008
    Date of Patent: December 15, 2009
    Assignee: Dongbu HiTek Co., Ltd.
    Inventor: Bong-Kil Kim
  • Patent number: 7550344
    Abstract: A semiconductor device includes: a lower hydrogen-barrier film; a capacitor formed on the lower hydrogen-barrier film and including a lower electrode, a capacitive insulating film, and an upper electrode; an interlayer dielectric film formed so as to cover the periphery of the capacitor; and an upper hydrogen-barrier film covering the top and lateral portions of the capacitor. An opening, which exposes the lower hydrogen-barrier film where the lower hydrogen-barrier film is located around the capacitor, and which is tapered and flares upward, is formed in the interlayer dielectric film, and the upper hydrogen-barrier film is formed along the lateral and bottom faces of the opening, and is in contact with the lower hydrogen-barrier film in the opening.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: June 23, 2009
    Assignee: Panasonic Corporation
    Inventors: Toyoji Ito, Eiji Fujii, Kazuo Umeda
  • Patent number: 7482220
    Abstract: In one embodiment, a semiconductor device is formed in a body of semiconductor material. The semiconductor device includes a charge compensating trench formed in proximity to active portions of the device. The charge compensating trench includes a trench filled with various layers of semiconductor material including opposite conductivity type layers.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: January 27, 2009
    Assignee: Semiconductor Components Industries, L.L.C.
    Inventors: Gary H. Loechelt, John M. Parsey, Jr., Peter J. Zdebel, Gordon M. Grivna
  • Patent number: 7482218
    Abstract: A transistor formed on a semiconductor substrate of a first conductivity type in a well formed in the substrate and doped with the first conductivity type to an impurity level higher than that of the substrate. A drain doped to a second conductivity type opposite to said first conductivity type is disposed in the well. A pair of opposed source regions doped to the second conductivity type are disposed in the well and are electrically coupled together. They are separated from opposing outer edges of the drain region by channels. A pair of gates are electrically coupled together and disposed above and insulated from the channels. A region of the well disposed below the drain is doped so as to reduce capacitive coupling between the drain and the well.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: January 27, 2009
    Assignee: Actel Corporation
    Inventors: John McCollum, Fethi Dhaoui
  • Publication number: 20080283930
    Abstract: By depositing and forming a spacer out of a semiconductor material layer or a dielectric material layer on the edges of an inter-well isolation area while forming a plug over an intra-well isolation area, a narrow intra-well isolation trench having a normal depth is formed in the intra-well isolation area, while a wider inter-well isolation trench having an extended portion is formed in the inter-well isolation area. The extended portion of the inter-well isolation trench provides enhanced inter-well isolation due to the presence of the extended portion beneath the normal depth. The extended portion of the inter-well isolation trench enables reduction of the width of the intra-well isolation trench structure relative to prior art inter-well isolation structures having a normal depth.
    Type: Application
    Filed: May 15, 2007
    Publication date: November 20, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Thomas W. Dyer, Haining S. Yang
  • Patent number: 7410855
    Abstract: A semiconductor device includes a semiconductor substrate, an nMISFET formed on the substrate, the nMISFET including a first dielectric formed on the substrate and a first metal gate electrode formed on the first dielectric and formed of one metal element selected from Ti, Zr, Hf, Ta, Sc, Y, a lanthanoide and actinide series and of one selected from boride, silicide and germanide compounds of the one metal element, and a pMISFET formed on the substrate, the pMISFET including a second dielectric formed on the substrate and a second metal gate electrode formed on the second dielectric and made of the same material as that of the first metal gate electrode, at least a portion of the second dielectric facing the second metal gate electrode being made of an insulating material different from that of at least a portion of the first dielectric facing the first metal gate electrode.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: August 12, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Reika Ichihara, Yoshinori Tsuchiya, Masato Koyama, Akira Nishiyama
  • Patent number: 7364959
    Abstract: A method for manufacturing a MOS transistor integrated into a chip of semi-conductive material comprising a first and a second active region which extend from the inside of the chip to a surface of the chip. The method comprises the steps of: a) forming a layer of insulating material on the surface of the chip and depositing a layer of conductive material on said insulating layer, b) defining an insulated gate electrode of the transistor, from said superimposed insulating and conductive layers, c) defining, from said superimposed insulating and conductive layers, an additional structure arranged on a first surface portion of the first active region, and d) placing between the insulated gate electrode and the additional structure a dielectric spacer placed on a second surface portion of the first active region.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: April 29, 2008
    Assignee: STMicroelectronics S.r.l.
    Inventors: Alessandro Moscatelli, Giuseppe Croce
  • Patent number: 7351627
    Abstract: Disclosed herein is a method of manufacturing a semiconductor device via gate-through ion implantation, comprising forming a gate stack on a semiconductor substrate and performing ion implantation for control of the threshold voltage and junction ion implantation for formation of source/drain regions, on the entire surface of the semiconductor substrate having the gate stack formed thereon. In accordance with the present invention, since ion implantation is carried out after formation of the gate stack involving a thermal process, there are no changes in concentrations of implanted dopants due to heat treatment upon formation of the gate stack.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: April 1, 2008
    Assignee: Hynix Semiconductor Inc.
    Inventors: Seung Woo Jin, Min Yong Lee, Kyoung Bong Rouh
  • Patent number: 7336530
    Abstract: A pixel circuit with a dual gate PMOS is formed by forming two P+ regions in an N? well. The N? well is in a P? type substrate. The two P+ regions form the source and drain of a PMOS transistor. The PMOS transistors formed within the N? well will not affect the collection of the photo-generated charge as long as the source and drain potentials of the PMOS transistors are set at a lower potential than the N? well potential so that they remain reverse biased with respect to the N? well. One of the P+ regions used to form the source and drain regions can be used to reset the pixel after it has been read in preparation for the next cycle of accumulating photo-generated charge. The N? well forms a second gate for the dual gate PMOS transistor since the potential of the N? well 12 affects the conductivity of the channel of the PMOS transistor. The addition of two NMOS transistors enables the readout signal to be stored at the gate of one of the NMOS transistors thereby making a snapshot imager possible.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: February 26, 2008
    Assignee: Digital Imaging Systems GmbH
    Inventors: Taner Dosluoglu, Nathaniel Joseph McCaffrey
  • Patent number: 7309636
    Abstract: The present invention pertains to a high-voltage MOS device. The high-voltage MOS device includes a substrate, a first well, a first field oxide layer enclosing a drain region, a second field oxide enclosing a source region, and a third field oxide layer encompassing the first and second field layers with a device isolation region in between. A channel region is situated between the first and second field oxide layers. A gate oxide layer is provided on the channel region. A gate is stacked on the gate oxide layer. A device isolation diffusion layer is provided in the device isolation region.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: December 18, 2007
    Assignee: United Microelectronics Corp.
    Inventor: Chin-Lung Chen