By Ion Implantation (epo) Patents (Class 257/E21.248)
  • Patent number: 7879666
    Abstract: A semiconductor process and apparatus fabricate a metal gate electrode (30) and an integrated semiconductor resistor (32) by forming a metal-based layer (26) and semiconductor layer (28) over a gate dielectric layer (24) and then selectively implanting the resistor semiconductor layer (28) in a resistor area (97) to create a conductive upper region (46) and a conduction barrier (47), thereby confining current flow in the resistor semiconductor layer (36) to only the top region (46) in the finally formed device.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: February 1, 2011
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Da Zhang, Chendong Zhu, Xiangdong Chen, Melanie Sherony
  • Patent number: 7867836
    Abstract: A method for manufacturing a junction semiconductor device having a drain region including a low-resistance layer of a first conductive type formed on one surface of a semiconductor crystal, a source region including a low-resistance layer of a first conductive type formed on the other surface of the semiconductor crystal, a gate region of a second conductive type formed on the periphery of the source region, a high-resistance layer of a first conductive type between the source region and the drain region, and a recombination-inhibiting semiconductor layer of a second conductive type provided in the vicinity of the surface of the semiconductor crystal between the gate region and the source region.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: January 11, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Ken-ichi Nonaka, Hideki Hashimoto, Seiichi Yokoyama, Kensuke Iwanaga, Yoshimitsu Saito
  • Patent number: 7851318
    Abstract: A semiconductor substrate is irradiated with accelerated hydrogen ions, thereby forming a damaged region including a large amount of hydrogen. After a single crystal semiconductor substrate and a supporting substrate are bonded to each other, the semiconductor substrate is heated, so that the single crystal semiconductor substrate is separated in the damaged region. A single crystal semiconductor layer which is separated from the single crystal semiconductor substrate is irradiated with a laser beam. The single crystal semiconductor layer is melted by laser beam irradiation, whereby the single crystal semiconductor layer is recrystallized to recover its crystallinity and to planarized a surface of the single crystal semiconductor layer. After the laser beam irradiation, the single crystal semiconductor layer is heated at a temperature at which the single crystal semiconductor layer is not melted, so that the lifetime of the single crystal semiconductor layer is improved.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: December 14, 2010
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Masaki Koyama, Fumito Isaka, Akihisa Shimomura, Junpei Momo
  • Patent number: 7829402
    Abstract: A MOSFET device and a method for fabricating MOSFET devices are disclosed. The method includes providing a semiconductor device structure including a semiconductor device layer of a first conductivity type, and ion implanting a well structure of a second conductivity type in the semiconductor device layer, where the ion implanting includes providing a dopant concentration profile in a single mask implant sequence.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: November 9, 2010
    Assignee: General Electric Company
    Inventors: Kevin Sean Matocha, Stephen Daley Arthur, Ramakrishna Rao, Peter Almern Losee, Zachary Matthew Stum
  • Patent number: 7829401
    Abstract: A method for fabricating a MOSFET (e.g., a PMOS FET) includes providing a semiconductor substrate having surface characterized by a (110) surface orientation or (110) sidewall surfaces, forming a gate structure on the surface, and forming a source extension and a drain extension in the semiconductor substrate asymmetrically positioned with respect to the gate structure. An ion implantation process is performed at a non-zero tilt angle. At least one spacer and the gate electrode mask a portion of the surface during the ion implantation process such that the source extension and drain extension are asymmetrically positioned with respect to the gate structure by an asymmetry measure.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: November 9, 2010
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Frank Bin Yang, Andrew M. Waite, Scott Luning
  • Patent number: 7824994
    Abstract: Disclosed is a method of forming memory devices employing halogen ion implantation and diffusion processes. In one illustrative embodiment, the method includes forming a plurality of word line structures above a semiconducting substrate, each of the word line structures comprising a gate insulation layer, performing an LDD ion implantation process to form LDD doped regions in the substrate between the word line structures, performing a halogen ion implantation process to implant atoms of halogen into the semiconducting substrate between the word line structures, and performing at least one anneal process to cause at least some of the atoms of halogen to diffuse into the gate insulation layers on adjacent word line structures.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: November 2, 2010
    Assignee: Micron Technology, Inc.
    Inventors: Kirk Prall, Behnam Moradi, Seiichi Aritome, Di Li, Chris Larsen
  • Patent number: 7816221
    Abstract: High frequency performance of (e.g., silicon) bipolar devices (40, 100, 100?) is improved by reducing the capacitive coupling (Cbc) between the extrinsic base contact (46) and the collector (44, 44?, 44?). A dielectric ledge (453, 453?) is created during fabrication to separate the extrinsic base contract (46) from the collector (44, 44?, 44?) periphery (441). The dielectric ledge (453, 453?) underlies the transition region (461) where the extrinsic base contact (46) is coupled to the intrinsic base. (472) During device fabrication, a multi layer dielectric stack (45) is formed adjacent the intrinsic base (472) that allows the simultaneous creation of an undercut region (457, 457?) in which the intrinsic base (472) to extrinsic base contact (46) transition region (461) can be formed.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: October 19, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Jay P. John, James A. Kirchgessner
  • Patent number: 7816279
    Abstract: A semiconductor device includes a first conductor disposed on a semiconductor substrate; an oxygen-containing insulation film disposed on the semiconductor substrate and on the first conductor, the insulation film having a contact hole which extends to the first conductor and a trench which is connected to an upper portion of the contact hole; a zirconium oxide film disposed on a side surface of the contact hole and a side surface and a bottom surface of the trench; a zirconium film disposed on the zirconium oxide film inside the contact hole and inside the trench; and a second conductor composed of Cu embedded into the contact hole and into the trench.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: October 19, 2010
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Michie Sunayama, Yoshiyuki Nakao, Noriyoshi Shimizu
  • Patent number: 7799626
    Abstract: A lateral DMOS device and a fabrication method therefor that may include forming a second conductive type well in a first conductive type semiconductor substrate and forming a Schottky contact in contact with the second conductive type well in a Schottky diode region, thereby preventing breakdown of the device due to high voltage.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: September 21, 2010
    Assignee: Dongbu HiTek Co., Ltd.
    Inventor: Sung-Man Pang
  • Patent number: 7790563
    Abstract: A semiconductor device of the present invention is manufactured by the following steps: forming a single-crystal semiconductor layer over a substrate having an insulating surface; irradiating a region of the single-crystal semiconductor layer with laser light; forming a circuit of a pixel portion using a region of the single-crystal semiconductor layer which is not irradiated with the laser light; and forming a driver circuit for driving the circuit of the pixel portion using the region of the single-crystal semiconductor layer which is irradiated with the laser light. Thus, a semiconductor device using a single-crystal semiconductor layer which is suitable for a peripheral driver circuit region and a single-crystal semiconductor layer which is suitable for a pixel region can be provided.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: September 7, 2010
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Tetsuya Kakehata
  • Publication number: 20100171182
    Abstract: A strained semiconductor device includes a first plurality of transistors spaced with a first gate pitch, a second plurality of transistors spaced with a second gate pitch greater than the first gate pitch, and an etch stop layer disposed on the first and second pluralities of transistors. The etch stop layer between each of the second plurality of transistors has a greater proportion of a stress-altering material than the etch stop layer between each of the first plurality of transistors.
    Type: Application
    Filed: January 5, 2010
    Publication date: July 8, 2010
    Inventors: Dong-Suk Shin, Pan-Kwi Park, Ha-Jin Lim, Joo-Chan Kim
  • Patent number: 7723220
    Abstract: A method of forming a compressive channel layer in a PMOS device and a PMOS device having a compressive channel layer are provided. The method includes (a) forming a buffer oxide layer on a silicon semiconductor substrate having a gate oxide layer and a gate electrode thereon, (b) forming a silicon nitride layer on the buffer oxide layer, (c) implanting impurities into the silicon nitride layer, and (d) etching or patterning the silicon nitride layer and the buffer oxide layer into which impurities are implanted to form gate spacers on sidewalls of the gate electrode.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: May 25, 2010
    Assignee: Dongbu Electronics Co., Ltd.
    Inventor: Jin Ha Park
  • Patent number: 7713854
    Abstract: A method of forming a gate dielectric layer includes forming a gate dielectric layer over a substrate. The gate dielectric layer is processed with carbon-containing ions. The gate dielectric layer is thermally processed, thereby providing the gate dielectric layer with a level of carbon between about 1 atomic % and about 20 atomic %.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: May 11, 2010
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chi-Chun Chen, Matt Yeh, Shih-Chang Chen, Mong-Song Liang, Jennifer Chen, Da-Yuan Lee
  • Patent number: 7655489
    Abstract: Disclosed is a method of doping an oxide. The example method includes forming at least one of an AlGaAs oxide or an InAlP oxide on a GaAs substrate, and incorporating Erbium into the at least one AlGaAs oxide or InAlP oxide via ion implantation to form an Erbium-doped oxide layer. The example method also includes annealing the substrate and the at least one AlGaAs oxide or InAlP oxide.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: February 2, 2010
    Assignee: The University of Notre Dame Du Lac
    Inventors: Douglas Hall, Mingjun Huang
  • Publication number: 20100022088
    Abstract: A process including forming a silicon layer over a semiconductor wafer having features thereon and then selectively ion implanting in the silicon layer to form ion implanted regions. The step of selectively ion implanting is repeated as many times as necessary to obtain a predetermined number and density of features. Thereafter, the silicon layer is etched to form openings in the silicon layer that were formerly occupied by the ion implanted regions. The opened areas in the silicon layer form a mask for further processing of the semiconductor wafer.
    Type: Application
    Filed: July 22, 2008
    Publication date: January 28, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Jin Wallner, Thomas A. Wallner, Ying Zhang
  • Patent number: 7635625
    Abstract: Disclosed is a method for manufacturing an image sensor. The method includes forming a polysilicon layer on a semiconductor substrate having an active region, forming a sacrificial layer on the polysilicon layer, forming a photoresist pattern on the sacrificial layer, implanting conductive impurities onto the polysilicon layer using the photoresist pattern as an ion implantation mask, removing the photoresist pattern, and removing the sacrificial layer from the polysilicon layer, thereby removing photoresist residues remaining on the sacrificial layer.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: December 22, 2009
    Assignee: Dongbu Hitek Co., Ltd.
    Inventor: Joo Hyun Lee
  • Publication number: 20090302391
    Abstract: A stress liner having first and second stress type is provided over a first type and a second type transistor to improve reliability and performance without incurring area penalties or layout deficiencies.
    Type: Application
    Filed: June 5, 2008
    Publication date: December 10, 2009
    Applicant: CHARTERED SEMICONDUCTOR MANUFACTURING, LTD.
    Inventors: Jae Gon LEE, Jingze TIAN, Shyue Seng TAN, Luona GOH, Wei LU, Elgin QUEK
  • Patent number: 7622344
    Abstract: A method for manufacturing CMOS transistors includes an etching back process alternatively performed after the gate structure formation, the lightly doped drain formation, source/drain implantation, or SEG process to etch a hard mask layer covering and protecting a first type gate structure, and to reduce thickness deviation between the hard masks covering the first type gate structure and a second type gate structure. Therefore the damage to spacers, STIs, and the profile of the gate structures due to the thickness deviation is prevented.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: November 24, 2009
    Assignee: United Microelectronics Corp.
    Inventors: Chia-Wen Liang, Cheng-Tung Huang, Shyh-Fann Ting, Chih-Chiang Wu, Shih-Chieh Hsu, Li-Shian Jeng, Kun-Hsien Lee, Meng-Yi Wu, Wen-Han Hung, Tzyy-Ming Cheng
  • Patent number: 7622358
    Abstract: A method for forming semi-insulating portions in a semiconductor substrate provides depositing a hardmask film over a semiconductor substructure to a thickness sufficient to prevent charged particles from passing through the hardmask. The hardmask is patterned creating openings through which charged particles pass and enter the substrate during an implantation process. The semi-insulating portions may extend deep into the semiconductor substrate and electrically insulate devices formed on opposed sides of the semi-insulating portions. The charged particles may advantageously be protons and further substrate portions covered by the patterned hardmask film are substantially free of the charged particles.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: November 24, 2009
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Wen-Chin Lin, Denny Tang, Chuan-Ying Lee, Hsu Chen Cheng
  • Patent number: 7615443
    Abstract: The invention discloses a method of forming a finFET device. A hard mask layer is formed on an active area of a semiconductor substrate. A portion of the hard mask layer is etched to form a recess. A conformal gate defining layer is deposited on the recess and a tilt angle ion implantation process is performed. A part of the gate defining layer is removed to define a fin pattern. The fin pattern is subsequently transferred to the hard mask layer. The patterned hard mask layer having the fin pattern is utilized as an etching mask, and the semiconductor substrate is etched to form a fin structure.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: November 10, 2009
    Assignee: Nanya Technology Corp.
    Inventors: Chih-Hao Cheng, Tzung-Han Lee
  • Patent number: 7615456
    Abstract: A method for manufacturing an SOI substrate superior in film thickness uniformity and resistivity uniformity in a substrate surface of a silicon layer having a film thickness reduced by an etch-back method is provided. After B ions is implanted into a front surface of a single-crystal Si substrate 10 to form a high-concentration boron added p layer 11 having a depth L in the outermost front surface, the single-crystal Si substrate 10 is appressed against a quartz substrate 20 to be bonded at a room temperature. Chemical etching is performed with respect to the single-crystal Si substrate 10 from a back surface thereof to set its thickness to L or below. A heat treatment is carried out with respect to an SOI substrate in a hydrogen containing atmosphere to outwardly diffuse B from the high-concentration boron added p layer 11, thereby acquiring a boron added p layer 12 having a desired resistance value.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: November 10, 2009
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Shoji Akiyama, Yoshihiro Kubota, Atsuo Ito, Makoto Kawai, Yuuji Tobisaka, Koichi Tanaka
  • Patent number: 7601645
    Abstract: Methods for fabricating devices having small feature sizes are provided. In an exemplary embodiment, a method comprises forming a patterned first mask layer overlying a subject material layer and isotropically etching the patterned first mask layer. A second masking layer is deposited overlying the patterned first mask layer and the isotropically-etched patterned first mask layer is exposed. The isotropically-etched patterned first mask layer is removed and the subject material layer is etched to form a feature therein.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: October 13, 2009
    Assignee: Globalfoundries Inc.
    Inventors: Doug H. Lee, Andreas Knorr
  • Publication number: 20090243049
    Abstract: Enhanced efficiency of a stress relaxation implantation process may be achieved by depositing a first layer of reduced thickness and relaxing the same at certain device regions, thereby obtaining an enhanced amount of substantially relaxed dielectric material in close proximity to the transistor under consideration, wherein a desired high amount of stressed dielectric material may be obtained above other transistors by performing a further deposition process. Hence, the negative effect of the highly stressed dielectric material for specific transistors, for instance in densely packed device regions, may be significantly reduced by depositing the highly stressed dielectric material in two steps with an intermediate relaxation implantation process.
    Type: Application
    Filed: November 17, 2008
    Publication date: October 1, 2009
    Inventors: Kai Frohberg, Uwe Griebenow, Katrin Reiche, Heike Berthold
  • Patent number: 7595248
    Abstract: Embodiments of the invention provide a device with a reverse-tapered gate electrode and a gate dielectric layer with a length close to that of the gate length. In an embodiment, this may be done by altering portions of a blanket dielectric layer with one or more angled ion implants, then removing the altered portions of the blanket dielectric layer.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: September 29, 2009
    Assignee: Intel Corporation
    Inventors: Michael L. Hattendorf, Justin K. Brask, Justin S. Sandford, Jack Kavalieros, Matthew V. Metz
  • Patent number: 7588991
    Abstract: The present invention provides a method for fabricating an embedded static random access memory, including providing a semiconductor substrate; defining a logic area and a memory cell area on the semiconductor substrate and defining at least a first conductive device area and at least a second conductive device area in the logic area and the memory cell area respectively; forming a patterned mask on the memory cell area and on the second conductive device area in the logic area and exposing the first conductive device area in the logic area; performing a first conductive ion implantation process on the exposed first conductive device area in the logic area; and removing the patterned mask.
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: September 15, 2009
    Assignee: United Microelectronics Corp.
    Inventors: Tung-Hsing Lee, Chien-Li Kuo, Yun-San Huang, Chih-Ming Su, Buo-Chin Hsu
  • Patent number: 7585763
    Abstract: A patterned anti-reflective coating may be used as a selective implant-blocking layer during fabrication of an integrated circuit transistor. In particular, the anti-reflective coating may be used as a gate sidewall spacer to block at least some dopants from an integrated circuit substrate beneath the gate sidewall spacer. Moreover, a single mask may be used when fabricating source and drain extension regions and source and drain regions of an integrated circuit transistor.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: September 8, 2009
    Assignees: Samsung Electronics Co., Ltd., Infineon Technologies AG
    Inventors: Sang Jine Park, Chong Kwang Chang, Seok-Gyu Lee, Lothar Doni
  • Patent number: 7572716
    Abstract: A method is disclosed for doping a target area of a semiconductor substrate, such as a source or drain region of a transistor, with an electronically active dopant (such as an N-type dopant used to create active areas in NMOS devices, or a P-type dopant used to create active areas in PMOS devices) having a well-controlled placement profile and strong activation. The method comprises placing a carbon-containing diffusion suppressant in the target area at approximately 50% of the concentration of the dopant, and activating the dopant by an approximately 1,040 degree Celsius thermal anneal. In many cases, a thermal anneal at such a high temperature induces excessive diffusion of the dopant out of the target area, but this relative concentration of carbon produces a heretofore unexpected reduction in dopant diffusion during such a high-temperature thermal anneal.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: August 11, 2009
    Assignee: Texas Instruments Incorporated
    Inventors: Haowen Bu, Shashank S. Ekbote, Borna Obradovic, Srinivasan Chakravarthi
  • Patent number: 7560334
    Abstract: A method and system for fabricating a stacked capacitor and a DMOS transistor are disclosed. In one aspect, the method and system include providing a bottom plate, an insulator, and an additional layer including first and second plates. The insulator covers at least a portion of the bottom plate and resides between the first and second top plates and the bottom plate. The first and second top plates are electrically coupled through the bottom plate. In another aspect, the method and system include forming a gate oxide. The method and system also include providing SV well(s) after the gate oxide is provided. A portion of the SV well(s) resides under a field oxide region of the device. Each SV well includes first, second, and third implants having a sufficient energy to provide the portion of the SV well at a desired depth under the field oxide region without significant additional thermal processing. A gate, source, and drain are also provided.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: July 14, 2009
    Assignee: Atmel Corporation
    Inventors: Stefan Schwantes, Volker Dudek, Michael Graf, Alan Renninger, James Shen
  • Patent number: 7534690
    Abstract: Stacked gate structures for a NAND string are created on a substrate. Source implantations are performed at a first implantation angle to areas between the stacked gate structures. Drain implantations are performed at a second implantation angle to areas between the stacked gate structures. The drain implantations create lower doped regions of a first conductivity type in the substrate on drain sides of the stacked gate structures. The source implantations create higher doped regions of the first conductivity type in the substrate on source sides of the stacked gate structures.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: May 19, 2009
    Assignee: SanDisk Corporation
    Inventors: Gerrit Jan Hemink, Shinji Sato
  • Patent number: 7507641
    Abstract: A bonded wafer is produced by implanting ions of a light element into a wafer for active layer to a predetermined depth position to form an ion implanted layer, bonding the wafer for active layer to a wafer for support substrate directly or through an insulating film of not more than 50 nm, exfoliating the wafer for active layer at the ion implanted layer and thinning an active layer exposed through the exfoliation to form the active layer having a predetermined thickness, in which the thickness of the active layer before the thinning is not more than 750 nm and an elongation of slip dislocation in a strength test of the wafer for active layer before the bonding is not more than 100 ?m at a predetermined thickness.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: March 24, 2009
    Assignee: Sumco Corporation
    Inventors: Nobuyuki Morimoto, Hideki Nishihata
  • Publication number: 20080268591
    Abstract: A method of forming a capacitor includes forming a first capacitor electrode over a semiconductor substrate. A capacitor dielectric region is formed onto the first capacitor electrode. The capacitor dielectric region has an exposed oxide containing surface. The exposed oxide containing surface of the capacitor dielectric region is treated with at least one of a borane or a silane. A second capacitor electrode is deposited over the treated oxide containing surface. The second capacitor electrode has an inner metal surface contacting against the treated oxide containing surface. Other aspects and implementations are contemplated.
    Type: Application
    Filed: December 12, 2007
    Publication date: October 30, 2008
    Inventors: Matthew W Miller, Cem Basceri
  • Patent number: 7442640
    Abstract: Methods of manufacturing a semiconductor device including a high-voltage device region and a low-voltage device region are provided. An illustrated method includes forming, on a substrate, a gate pattern for a high-voltage device and a low-voltage device; implanting ions into opposite sides of the gate pattern, to form a lightly doped drain structure while implanting ions into a portion of the high-voltage device region under the same conditions as the low-voltage device region to form an electrostatic discharge protecting device region; forming a spacer at the side surface of the gate pattern; forming a source region and a drain source at field regions disposed at the opposite sides of the gate pattern, respectively; and forming a metal layer on the front surface of the substrate including the gate pattern.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: October 28, 2008
    Assignee: Dongbu Electronics Co., Ltd.
    Inventor: San Hong Kim
  • Patent number: 7442631
    Abstract: A doping method comprising the steps of; obtaining a proportion X of ions of a compound including a donor or an acceptor impurity in total ions from mass spectrum by using a first source gas of a first concentration; analyzing a peak concentration Y of the compound in a first processing object which is doped by using a second source gas of a second concentration equal to or lower than the first concentration, referring to a dose amount of total ions as D0 and setting an acceleration voltage at a value, obtaining a dose amount D1 of total ions from a expression, Y=(D1/D0)(aX+b), and doping a second processing object with the donor or the acceptor impurity by a ion doping apparatus using a third source gas, wherein a dose amount of total ions is set at D1, and an acceleration voltage is set at the value.
    Type: Grant
    Filed: February 3, 2006
    Date of Patent: October 28, 2008
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Junichi Koezuka, Naoki Suzuki
  • Patent number: 7442657
    Abstract: A stress relaxed monocrystalline layer structure is made on a nonlattice matched substrate by first applying to the substrate epitaxially a monocrystalline layer structure comprising at least one layer, the monocrystalline layer structure forming with the substrate an interface that has a greater lattice parameter mismatch on the substrate than within the monocrystalline layer structure. The monocrystalline layer is irradiated by directing an ion beam to generate predominantly point effects in the monocrystalline layer structure and an extended defect region in the substrate proximal to the monocrystalline layer structure. Then the monocrystalline layer structure is thermally treated in a temperature range of 550° C. to 1000° C. in an inert, reducing or oxidizing atmosphere so that the monocrystalline layer structure above the extended defect region is stress relaxed and has a defect density less than 106 cm?2 and a surface roughness of less than 1 nm.
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: October 28, 2008
    Assignee: Forschungszentrum Julich GmbH
    Inventor: Siegfried Mantl
  • Patent number: 7432150
    Abstract: A method of manufacturing a magnetoelectronic device includes providing an electrically conducting material and an electrically insulating material adjacent to at least a portion of the electrically conducting material, and implanting a magnetic material into the electrically insulating material. The magnetic material increases the magnetic permeability of the electrically insulating material. The implant may be a blanket or a targeted implant.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: October 7, 2008
    Assignee: EverSpin Technologies, Inc.
    Inventors: Mark A. Durlam, Gloria J. Kerszykowski, Nicholas D. Rizzo, Eric J. Salter, Loren J. Wise
  • Patent number: 7393746
    Abstract: A method forms a gate conductor over a substrate, forms spacers (e.g., nitride spacers) on sides of the gate conductor, and implants an impurity into exposed regions of the substrate not protected by the gate conductor and the spacers. Then the method forms a silicide on surfaces of the exposed regions of the substrate. The method forms a conformal protective layer (e.g., an oxide or other similar material) over the silicide, the spacers, and the gate conductor. Next, the method forms a non-conformal sacrificial layer (e.g., nitride or other material that can be selectively removed with respect to the protective layer) over the protective layer. A subsequent partial etching process partially etches the sacrificial layer such that relatively thinner regions of the sacrificial layer that are over the spacers are completely removed and the relatively thicker regions of the sacrificial layer that are over the substrate are not removed.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: July 1, 2008
    Assignees: International Business Machines Corporation, Samsung Electronics Co. Ltd., Infineon Technologies North America Corporation, Chartered Semiconductor Manufacturing, Ltd.
    Inventors: Thomas W. Dyer, Sunfei Fang, Jiang Yan, Siddhartha Panda, Yong Meng Lee, JunJung Kim
  • Patent number: 7384857
    Abstract: The construction of Shallow Trench Isolation, STI, regions is integrated in to a SIMOX fabrication process for a Silicon On Insulator, SOI, wafer. Prior to the beginning of the SOI process, a preferred nitrogen (N2) implant is applied to the silicon wafer in areas designated as active regions. The nitrogen modifies the oxidation rate of later implanted oxygen. Regions where the N2 is implanted result in thinner oxide layers. The SIMOX process can begin following the implantation of nitrogen. This results in buried regions of thick and thin oxide layers at fixed depths in the Si substrate. Excess Si on top of the buried thick and thin oxide regions can be polished down to the thick oxide regions to form the active device regions over the thin oxide regions. Thus, the SOI wafer exhibits an STI structure upon completion of the SOI process without a need for additional STI manufacturing steps.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: June 10, 2008
    Assignee: Seiko Epson Corporation
    Inventor: Michael Hargrove
  • Patent number: 7368359
    Abstract: A semiconductor substrate (100) is acquired by forming a mask with a target thickness on a major surface of a single-crystal silicon substrate, implanting oxygen ions to the major surface at a high temperature, forming a surface protection layer for blocking oxygen on the major surface, performing annealing, and then stripping off the mask and the surface protection layer. A silicon dioxide layer (102) has a first tip surface (102a) corresponding to an area where the mask has not existed and having a relatively long distance from the major surface (100a), and a second top surface (102b) corresponding to an area where the mask has existed and having a relatively short distance from the major surface (100a). As this major surface (100a) is polished by a predetermined quantity, a semiconductor substrate is provided in which only a part of a single-crystal silicon substrate is a SOI substrate.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: May 6, 2008
    Assignees: Sony Corporation, Regents of the University of California
    Inventors: Koichiro Kishima, Prakash Koonath
  • Patent number: 7348229
    Abstract: The invention relates to a method of manufacturing a semiconductor device (10) with a field effect transistor, in which method a semiconductor body (1) of silicon is provided at a surface thereof with a source region (2) and a drain region (3) of a first conductivity type, which both are provided with extensions (2A,3A) and with a channel region (4) of a second conductivity type, opposite to the first conductivity type, between the source region (2) and the drain region (3) and with a gate region (5) separated from the surface of the semiconductor body (1) by a gate dielectric (6) above the channel region (4), and wherein a pocket region (7) of the second conductivity type and with a doping concentration higher than the doping concentration of the channel region (4) is formed below the extensions (2A,3A), and wherein the pocket region (7) is formed by implanting heavy ions in the semiconductor body (1), after which implantation a first annealing process is done at a moderate temperature and a second annealing
    Type: Grant
    Filed: November 29, 2004
    Date of Patent: March 25, 2008
    Assignee: NXP B.V.
    Inventors: Bartlomiej Jan Pawlak, Raymond James Duffy
  • Patent number: 7288458
    Abstract: A wafer having an SOI configuration and active regions having different surface orientations for different channel type transistors. In one example, semiconductor structures having a first surface orientation are formed on a donor wafer. Semiconductor structures having a second surface orientation are formed on a second wafer. Receptor openings are formed on the second wafer. The semiconductor structures having the first surface orientation are located in the receptor openings and transferred to the second wafer. The resultant wafer has semiconductor regions having a first surface orientation for a first channel type of transistor and semiconductor regions having a second surface orientation for a second channel type transistor.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: October 30, 2007
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Olubunmi O. Adetutu, Robert E. Jones, Ted R. White
  • Patent number: 7223675
    Abstract: A method of forming a pre-metal dielectric (PMD) layer is disclosed. In the method, after a nitride liner layer is formed on a substrate having a transistor, a USG layer is deposited thereon and then planarized. Next, ion implantation and annealing are performed for gettering, first in a gate region and then in a non-gate region of the USG layer. The USG layer is generally free from plasma damage and has a good gap-fill capability. Further, ion implantation and annealing after deposition of the USG layer may enhance a gap-fill capability, a gettering capability, and electrical properties of a transistor.
    Type: Grant
    Filed: May 10, 2005
    Date of Patent: May 29, 2007
    Assignee: Dongbu Electronics Co., Ltd.
    Inventor: Jae Suk Lee
  • Patent number: 7129143
    Abstract: Semiconductor devices and methods of making the same are disclosed. According to one example, a semiconductor device having dual spacer may include a semiconductor substrate, a gate oxide film and a gate poly provided in a device region of the semiconductor substrate, a halo/pocket implant region formed in a region of the semiconductor substrate by which the gate poly is defined, and an inner spacer formed at a side wall of the gate poly for defining the width of a lower portion of the gate poly. The semiconductor device may also include an outer spacer formed at the side wall of the gate poly for defining the width of an upper portion of the gate poly, source/drain regions provided on the semiconductor substrate under the gate oxide film, and a salicide film provided on surfaces of the gate poly and the source/drain region.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: October 31, 2006
    Assignee: Dongbu Electronics Co., Ltd.
    Inventor: Jeong Ho Park