With Bipolar Transistor Structure Patents (Class 257/517)
  • Patent number: 11245006
    Abstract: A trench semiconductor device includes a layer of semiconductor material, an exterior trench pattern formed in the layer of semiconductor material, and an interior trench pattern formed in the layer of semiconductor material, at least partially surrounded by the exterior trench pattern. The exterior trench pattern includes a plurality of exterior trench portions that are each lined with dielectric material and filled with conductive material, and the interior trench pattern includes a plurality of interior trench portions that are each lined with dielectric material and filled with conductive material.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: February 8, 2022
    Assignees: Polar Semiconductor, LLC, SANKEN ELECTRIC CO., LTD.
    Inventors: Dosi Dosev, Don Rankila, Tatsuya Kamimura, Shunsuke Fukunaga, Steven L. Kosier, Peter West
  • Patent number: 10903345
    Abstract: A method of forming an IC including a power semiconductor device includes providing a substrate having an epi layer thereon with at least one transistor formed therein covered by a pre-metal dielectric (PMD) layer. Contact openings are etched from through the PMD into the epi layer to form a sinker trench extending to a first node of the device. A metal fill material is deposited to cover a sidewall and bottom of the sinker trench but not completely fill the sinker trench. A dielectric filler layer is deposited over the metal fill material to fill the sinker trench. An overburden region of the dielectric filler layer is removed stopping on a surface of the metal fill material in the overburden region to form a sinker contact. A patterned interconnect metal is formed providing a connection between the interconnect metal and metal fill material on the sidewall of the sinker trench.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: January 26, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Yufei Xiong, Yunlong Liu, Hong Yang, Ho Lin, Tianping Lv, Sheng Zou, Qiuling Jia
  • Patent number: 10756172
    Abstract: A semiconductor device having a silicon-on-insulator (SOI) structure in which a source region and a drain region extend along a longitudinal direction that is a direction along a longer side of sides facing each other, and are disposed side-by-side in a lateral direction that is a direction perpendicular to the longitudinal direction. In a plan view, a body region extends along the longitudinal direction and is surrounded by a drift region and an insulating region. A space between the insulating region and the body region in the lateral direction becomes narrower from the center to the end of the body region in the longitudinal direction. This achieves high breakdown voltage in the semiconductor device.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: August 25, 2020
    Assignee: PANASONIC SEMICONDUCTOR SOLUTIONS CO., LTD.
    Inventors: Teruhisa Ikuta, Hiroshi Sakurai, Satoru Kanai
  • Patent number: 10725372
    Abstract: A method includes determining topographic information of a substrate for use in a lithographic imaging system, determining or estimating, based on the topographic information, imaging error information for a plurality of points in an image field of the lithographic imaging system, adapting a design for a patterning device based on the imaging error information. In an embodiment, a plurality of locations for metrology targets is optimized based on imaging error information for a plurality of points in an image field of a lithographic imaging system, wherein the optimizing involves minimizing a cost function that describes the imaging error information. In an embodiment, locations are weighted based on differences in imaging requirements across the image field.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: July 28, 2020
    Assignee: ASML Netherlands B.V.
    Inventors: Wim Tjibbo Tel, Marinus Jochemsen, Frank Staals, Christopher Prentice, Laurent Michel Marcel Depre, Johannes Marcus Maria Beltman, Roy Werkman, Jochem Sebastiaan Wildenberg, Everhardus Cornelis Mos
  • Patent number: 10002876
    Abstract: A plurality of fin structures containing, from bottom to top, a non-doped semiconductor portion and a second doped semiconductor portion of a first conductivity type, extend upwards from a surface of a first doped semiconductor portion of the first conductivity type. A trapping material (e.g., an electron-trapping material) is present along a bottom portion of sidewall surfaces of each non-doped semiconductor portion and on exposed portions of each first doped semiconductor portion. Functional gate structures straddle each fin structure. Metal lines are located above each fin structure and straddle each functional gate structure. Each metal line is orientated perpendicular to each functional gate structure and has a bottommost surface that is in direct physical contact with a portion of a topmost surface of each of the second doped semiconductor portions.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: June 19, 2018
    Assignee: International Business Machines Corporation
    Inventors: Ramachandra Divakaruni, Arvind Kumar, Carl J. Radens
  • Patent number: 9748012
    Abstract: According to a method for manufacturing a metal grating structure of the present invention, in filling a concave portion formed in a silicon substrate (30), for instance, a slit groove (SD) with metal by an electroforming method, an insulating layer (34) is formed in advance on an inner surface of the slit groove (SD) as an example of the concave portion by a thermal oxidation method. Accordingly, the metal grating structure manufacturing method is advantageous in finely forming metal parts of the grating structure. A metal grating structure of the present invention is manufactured by the above manufacturing method, and an X-ray imaging device of the present invention is incorporated with the metal grating structure.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: August 29, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventor: Mitsuru Yokoyama
  • Patent number: 9653496
    Abstract: A preparation method of a poly-silicon thin film transistor (TFT) array substrate and an array substrate thereof are provided. The preparation method includes: forming a photoresist layer on a poly-silicon layer, and exposing and developing the photoresist layer with a gray tone mask to form patterns of a photoresist completely-reserved region, a photoresist partially-reserved regions and a photoresist completely-removed region; removing part of the poly-silicon layer located in the photoresist completely-removed region, to form patterns of active layers; ashing the photoresist so as to expose part of the active layer located in the photoresist partially-reserved regions and inject P+ ions of high concentration into the part of the active layer, to form doping regions of patterns of source-drain electrodes of a P-type TFT; and stripping off remaining photoresist.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: May 16, 2017
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Shuang Sun, Jing Niu, Fangzhen Zhang, Zhijun Lv
  • Patent number: 9570538
    Abstract: Various embodiments provide computer program products and computer implemented methods. In some embodiments, aspects provide for a method of manufacturing a polysilicon resistor with a selected temperature coefficient of resistance (TCR), the method including selecting a sheet resistance for the polysilicon resistor, the selected sheet resistance being related to a selected film thickness of the polysilicon resistor, selecting a dose level for a grain size modulating species (GSMS) for modulating an average grain size of grains of the polysilicon resistor, selecting a thermal coefficient of resistance (TCR) for the polysilicon resistor, the TCR being related to a selected average grain size of the polysilicon and forming the polysilicon resistor on a substrate, the polysilicon resistor having the selected sheet resistance, the selected GSMS dose level and the selected TCR.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: February 14, 2017
    Assignee: International Business Machines Corporation
    Inventors: Satyasuresh V. Choppalli, Prabhu R. Dattatreya, Josef S. Watts
  • Patent number: 9472609
    Abstract: Various embodiments provide computer program products and computer implemented methods. In some embodiments, aspects provide for a method of manufacturing a polysilicon resistor with a selected temperature coefficient of resistance (TCR), the method including selecting a sheet resistance for the polysilicon resistor, the selected sheet resistance being related to a selected film thickness of the polysilicon resistor, selecting a dose level for a grain size modulating species (GSMS) for modulating an average grain size of grains of the polysilicon resistor, selecting a thermal coefficient of resistance (TCR) for the polysilicon resistor, the TCR being related to a selected average grain size of the polysilicon and forming the polysilicon resistor on a substrate, the polysilicon resistor having the selected sheet resistance, the selected GSMS dose level and the selected TCR.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: October 18, 2016
    Assignee: International Business Machines Corporation
    Inventors: Satyasuresh V. Choppalli, Prabhu R. Dattatreya, Josef S. Watts
  • Patent number: 9385190
    Abstract: The embodiments described herein provide a semiconductor device layout and method that can be utilized in a wide variety of semiconductor devices. In one embodiment a semiconductor device is provided that includes a plurality of deep trench isolation structures that define and surround a first plurality of first trench-isolated regions in the substrate, and further define a second plurality of second trench-isolated regions in the substrate. The first plurality of first trench-isolated regions is arranged in a plurality of first columns, with each of the first columns including at least two of the first plurality of first trench-isolated regions. Likewise, the plurality of first columns are interleaved with the second trench-isolated regions to alternate in an array such that a second trench-isolated region is between consecutive first columns in the array and such that at least two first trench-isolated regions are between consecutive second trench-isolated regions in the array.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: July 5, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: John M. Pigott, Brent D. Rogers, Randall C. Gray
  • Patent number: 9275895
    Abstract: A method for producing a semiconductor component with a semiconductor body includes providing a substrate of a first conductivity type. A buried semiconductor layer of a second conductivity type is provided on the substrate. A functional unit semiconductor layer is provided on the buried semiconductor layer. At least one trench, which reaches into the substrate, is formed in the semiconductor body. An insulating layer is formed, which covers inner walls of the trench and electrically insulates the trench interior from the functional unit semiconductor layer and the buried semiconductor layer, the insulating layer having at least one opening in the region of the trench bottom. The at least one trench is filled with an electrically conductive semiconductor material of the first conductivity type, wherein the electrically conductive semiconductor material forms an electrical contact from a surface of the semiconductor body to the substrate.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: March 1, 2016
    Assignee: Infineon Technologies AG
    Inventors: Andreas Meiser, Walter Hartner, Hermann Gruber, Dietrich Bonart, Thomas Gross
  • Patent number: 9054221
    Abstract: The present disclosure provides a semiconductor device and a method for manufacturing the same.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: June 9, 2015
    Assignee: Institute of Microelectronics, Chinese Academy of Sciences
    Inventors: Huilong Zhu, Qingqing Liang, Zhijiong Luo, Haizhou Yin
  • Patent number: 9029955
    Abstract: An integrated circuit includes a semiconductor substrate, a silicon layer, a buried isolating layer arranged between the substrate and the layer, a bipolar transistor comprising a collector and emitter having a first doping, and a base and a base contact having a second doping, the base forming a junction with the collector and emitter, the collector, emitter, base contact, and the base being coplanar, a well having the second doping and plumb with the collector, emitter, base contact and base, the well separating the collector, emitter and base contact from the substrate, having the second doping and extending between the base contact and base, a isolating trench plumb with the base and extending beyond the layer but without reaching a bottom of the emitter and collector, and another isolating trench arranged between the base contact, collector, and emitter, the trench extending beyond the buried layer into the well.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: May 12, 2015
    Assignees: Commissariat á l'énergie atomique et aux énergies alternatives, STMicroelectronics SA
    Inventors: Claire Fenouillet-Beranger, Pascal Fonteneau
  • Patent number: 8981521
    Abstract: Provided is a lateral BJT including a substrate, a well region, an area, at least one lightly doped region, a first doped region, and a second doped region. The substrate is of a first conductivity type. The well region is of a second conductivity type and is in the substrate. The area is in the well region. The at least one lightly doped region is in the well region below the area. The first doped region and the second doped region are of the first conductivity type and are in the well region on both sides of the area. The first doped region is connected to a cathode. The second doped region is connected to an anode, wherein the doping concentration of the at least one lightly doped region is lower than that of each of the first doped region, the second doped region, and the well region.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: March 17, 2015
    Assignee: United Microelectronics Corp.
    Inventors: Chang-Tzu Wang, Pei-Shan Tseng, Tien-Hao Tang
  • Patent number: 8907452
    Abstract: A device for detecting a laser attack in an integrated circuit chip formed in the upper P-type portion of a semiconductor substrate incorporating an NPN bipolar transistor having an N-type buried layer, including a detector of the variations of the current flowing between the base of said NPN bipolar transistor and the substrate.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: December 9, 2014
    Assignee: STMicroelectronics (Rousset) SAS
    Inventors: Fabrice Marinet, Jimmy Fort, Alexandre Sarafianos, Julien Mercier
  • Patent number: 8872222
    Abstract: A semiconductor structure and a method for forming the same are provided. The semiconductor structure comprises a first doped region, a second doped region, a doped strip and a top doped region. The first doped region has a first type conductivity. The second doped region is formed in the first doped region and has a second type conductivity opposite to the first type conductivity. The doped strip is formed in the first doped region and has the second type conductivity. The top doped region is formed in the doped strip and has the first type conductivity. The top doped region has a first sidewall and a second sidewall opposite to the first sidewall. The doped strip is extended beyond the first sidewall or the second sidewall.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: October 28, 2014
    Assignee: Macronix International Co., Ltd.
    Inventors: Ching-Lin Chan, Chen-Yuan Lin, Cheng-Chi Lin, Shih-Chin Lien
  • Patent number: 8866264
    Abstract: A semiconductor device implemented with structures to suppress leakage current generation during operation and a method of making the same is provided. The semiconductor device includes a semiconductor substrate of first conductivity type, a second insulation film, which has at least one aperture between first and second apertures, formed on top of a first insulation film. The semiconductor device layer structure accommodates tensile stress differences between device layers to suppress lattice dislocation defects during device manufacturing and thus improves device reliability and performance.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: October 21, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Masahiko Kubo
  • Patent number: 8847224
    Abstract: According to one exemplary embodiment, a fin-based bipolar junction transistor (BJT) includes a wide collector situated in a semiconductor substrate. A fin base is disposed over the wide collector. Further, a fin emitter and an epi emitter are disposed over the fin base. A narrow base-emitter junction of the fin-based BJT is formed by the fin base and the fin emitter and the epi emitter provides increased current conduction and reduced resistance for the fin-based BJT. The epi emitter can be epitaxially formed on the fin emitter and can comprise polysilicon. Furthermore, the fin base and the fin emitter can each comprise single crystal silicon.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: September 30, 2014
    Assignee: Broadcom Corporation
    Inventors: Wei Xia, Xiangdong Chen
  • Publication number: 20140264728
    Abstract: A semiconductor device includes CMP dummy tiles (36) that are converted to active tiles by forming well regions (42) at a top surface of the dummy tiles, forming silicide (52) on top of the well regions, and forming, a metal interconnect structure (72, 82) in contact with the silicided well tie regions for electrically connecting the dummy tiles to a predetermined supply voltage to provide latch-up protection.
    Type: Application
    Filed: May 29, 2014
    Publication date: September 18, 2014
    Applicant: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Robert S. Ruth, Mark A. Kearney, Bernard J. Pappert, Juxiang Ren, Jeff L. Warner
  • Patent number: 8816400
    Abstract: A silicon-germanium (SiGe) heterojunction bipolar transistor (HBT) having a deep pseudo buried layer is disclosed. The SiGe HBT includes isolation structures formed in trenches, first pseudo buried layers and second pseudo buried layers, and a collector region. The first pseudo buried layers are formed under the respective trenches and the second pseudo buried layers are formed under the first pseudo buried layers, with each first pseudo buried layer vertically contacting with a second pseudo buried layer. The second pseudo buried layers are laterally connected to each other, and the collector region is surrounded by the trenches, the first pseudo buried layers and the second pseudo buried layers. The cross section of each of the trenches has a regular trapezoidal shape, namely, each trench's width of its top is smaller than that of its bottom. A manufacturing method of the SiGe HBT is also disclosed.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: August 26, 2014
    Assignee: Shanghai Hua Hong Nec Electronics Co., Ltd.
    Inventor: Wensheng Qian
  • Patent number: 8786024
    Abstract: A combined switching device includes a MOSFET disposed in a MOSFET area and IGBTs disposed in IGBT areas of a SiC substrate. The MOSFET and the IGBTs have gate electrodes respectively connected, a source electrode and emitter electrodes respectively connected, and a drain electrode and a collector electrode respectively connected. The MOSFET and the IGBTs are disposed with a common n-buffer layer. A top surface element structure of the MOSFET and top surface element structures of the IGBTs are disposed on the first principal surface side of the SiC substrate. Concave portions and convex portions are disposed on the second principal surface side of the SiC substrate. The MOSFET is disposed at a position corresponding to the convex portion of the SiC substrate. The IGBTs are disposed at positions corresponding to the concave portions of the SiC substrate.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: July 22, 2014
    Assignees: Yoshitaka Sugawara, Fuji Electric Co., Ltd.
    Inventor: Yoshitaka Sugawara
  • Patent number: 8779473
    Abstract: A silicon-germanium (SiGe) heterojunction bipolar transistor (HBT) device that includes a substrate; a buried oxide layer near a bottom of the substrate; a collector region above and in contact with the buried oxide layer; a field oxide region on each side of the collector region; a pseudo buried layer under each field oxide region and in contact with the collector region; and a through region under and in contact with the buried oxide layer. A method for manufacturing a SiGe HBT device is also disclosed. The SiGe HBT device can isolate noise from the bottom portion of the substrate and hence can improve the intrinsic noise performance of the device at high frequencies.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: July 15, 2014
    Assignee: Shanghai Hua Hong NEC Electronics Co., Ltd.
    Inventors: Donghua Liu, Jing Shi, Wenting Duan, Wensheng Qian, Jun Hu
  • Patent number: 8729662
    Abstract: A semiconductor integrated circuit is reduced in size by suppressing lateral extension of an isolation region when impurities are thermally diffused in a semiconductor substrate to form the isolation region. Boron ions (B+) are implanted into an epitaxial layer through a third opening K3 to form a P-type impurity region, using a third photoresist as a mask. Then a fourth photoresist is formed on a silicon oxide film to have fourth openings K4 (phosphorus ion implantation regions) that partially overlap the P-type impurity region. Phosphorus ions (P+) are implanted into the surface of the epitaxial layer in etched-off regions using the fourth photoresist as a mask to form N-type impurity regions that are adjacent the P-type impurity region. After that, a P-type upper isolation region is formed in the epitaxial layer by thermal diffusion so that the upper isolation region and a lower isolation region are combined together to make an isolation region.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: May 20, 2014
    Assignee: Semiconductor Components Industries, LLC
    Inventor: Keiji Mita
  • Patent number: 8710617
    Abstract: In a region located between a collector electrode and a semiconductor substrate, there are a portion where a hollow region is located and a portion where no hollow region is located. Between the collector electrode and the portion where no hollow region is located in the semiconductor substrate, a floating silicon layer electrically isolated by insulating films is formed.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: April 29, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Junichi Yamashita, Tomohide Terashima
  • Publication number: 20140061727
    Abstract: A method of forming an integrated circuit structure includes: forming a vent via extending through a shallow trench isolation (STI) and into a substrate; selectively removing an exposed portion of the substrate at a bottom of the vent via to form an opening within the substrate, wherein the opening within the substrate abuts at least one of a bottom surface or a sidewall of the STI; and sealing the vent via to form an air gap in the opening within the substrate.
    Type: Application
    Filed: November 6, 2013
    Publication date: March 6, 2014
    Applicant: International Business Machines Corporation
    Inventors: Renata A. Camillo-Castillo, James S. Dunn, David L. Harame, Anthony K. Stamper
  • Patent number: 8654537
    Abstract: Electrical components such as integrated circuits may be mounted on a printed circuit board. To prevent the electrical components from being subjected to electromagnetic interference, radio-frequency shielding structures may be formed over the components. The radio-frequency shielding structures may be formed from a layer of metallic paint. Components may be covered by a layer of dielectric. Channels may be formed in the dielectric between blocks of circuitry. The metallic paint may be used to coat the surfaces of the dielectric and to fill the channels. Openings may be formed in the surface of the metallic paint to separate radio-frequency shields from each other. Conductive traces on the surface of the printed circuit board may be used in connecting the metallic paint layer to internal printed circuit board traces.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: February 18, 2014
    Assignee: Apple Inc.
    Inventors: Joseph Fisher, Jr., Sean Mayo, Dennis R. Pyper, Paul Nangeroni, Jose Mantovani
  • Patent number: 8598678
    Abstract: A parasitic vertical PNP bipolar transistor in BiCMOS process comprises a collector, a base and an emitter. The collector is formed by active region with p-type ion implanting layer (P type well in NMOS). It connects a P-type conductive region, which formed in the bottom region of shallow trench isolation (STI). The collector terminal connection is through the P-type buried layer and the adjacent active region. The base is formed by N type ion implanting layer above the collector which shares a N-type lightly doped drain (NLDD) implanting of NMOS. Its connection is through the N-type poly on the base region. The emitter is formed by the P-type epitaxy layer on the base region with heavy p-type doped, and connected by the extrinsic base region of NPN bipolar transistor device. This invention also includes the fabrication method of this parasitic vertical PNP bipolar transistor in BiCMOS process.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: December 3, 2013
    Assignee: Shanghai Hua Hong Nec Electronics Company, Limited
    Inventors: Wensheng Qian, Jun Hu, Donghua Liu
  • Patent number: 8587087
    Abstract: In order to improve characteristics of an IGBT, particularly, to reduce steady loss, turn-off time and turn-off loss, a thickness of a surface semiconductor layer is set to about 20 nm to 100 nm in an IGBT including: a base layer; a buried insulating film provided with an opening part; the surface semiconductor layer connected to the base layer below the opening part; a p type channel forming layer formed in the surface semiconductor layer; an n+ type source layer; a p+ type emitter layer; a gate electrode formed over the surface semiconductor layer via a gate insulating film; an n+ type buffer layer; and a p type collector layer.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: November 19, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Daisuke Arai, Yoshito Nakazawa, Norio Hosoya
  • Patent number: 8546908
    Abstract: A semiconductor amplifier is provided comprising, a substrate and one or more unit amplifying cells (UACs) formed on the substrate, wherein each UAC is laterally surrounded by a first lateral dielectric filled trench (DFT) isolation wall extending at least to the substrate and multiple UACs are surrounded by a second lateral DFT isolation wall of similar depth outside the first isolation walls, and further semiconductor regions lying between the first isolation walls when two or more unit cells are present, and/or lying between the first and second isolation walls, are electrically floating with respect to the substrate. This reduces the parasitic capacitance of the amplifying cells and improves the power added efficiency. Excessive leakage between buried layer contacts when using high resistivity substrates is avoided by providing a further semiconductor layer of intermediate doping between the substrate and the buried layer contacts.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: October 1, 2013
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Dragan Zupac, Brian D. Griesbach, Theresa M. Keller, Joel M. Keys, Sandra J. Wipf, Evan F. Yu
  • Patent number: 8525293
    Abstract: High performance bipolar transistors with raised extrinsic self-aligned base are integrated into a BiCMOS structure containing CMOS devices. By forming pad layers and raising the height of an intrinsic base layer relative to the source and drain of preexisting CMOS devices and by forming an extrinsic base through selective epitaxy, the effect of topographical variations is minimized during a lithographic patterning of the extrinsic base. Also, by not employing any chemical mechanical planarization process during the fabrication of the bipolar structures, complexity of process integration is reduced. Internal spacers or external spacers may be formed to isolate the base from the emitter. The pad layers, the intrinsic base layer, and the extrinsic base layer form a mesa structure with coincident outer sidewall surfaces.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: September 3, 2013
    Assignee: International Business Machines Corporation
    Inventors: Natalie B. Feilchenfeld, Bradley A. Orner, Benjamin T. Voegeli
  • Patent number: 8501572
    Abstract: The present disclosure provides a bipolar junction transistor (BJT) device and methods for manufacturing the BJT device. In an embodiment, the BJT device includes: a semiconductor substrate having a collector region, and a material layer disposed over the semiconductor layer. The material layer has a trench therein that exposes a portion of the collector region. A base structure, spacers, and emitter structure are disposed within the trench of the material layer. Each spacer has a top width and a bottom width, the top width being substantially equal to the bottom width.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: August 6, 2013
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chun-Tsung Kuo, Shih-Chang Liu, Chia-Shiung Tsai
  • Patent number: 8455975
    Abstract: A parasitic PNP bipolar transistor, wherein a base region includes a first and a second region; the first region is formed in an active area, has a depth larger than shallow trench field oxides, and has its bottom laterally extended into the bottom of the shallow trench field oxides on both sides of an active area; the second region is formed in an upper part of the first region and has a higher doping concentration; an N-type and a P-type pseudo buried layer is respectively formed at the bottom of the shallow trench field oxides; a deep hole contact is formed on top of the N-type pseudo buried layer to pick up the base; the P-type pseudo buried layer forms a collector region separated from the active area by a lateral distance; an emitter region is formed by a P-type SiGe epitaxial layer formed on top of the active area.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: June 4, 2013
    Assignee: Shanghai Hua Hong NEC Electronics Co., Ltd.
    Inventors: Donghua Liu, Wensheng Qian
  • Publication number: 20130127007
    Abstract: A transient voltage suppressor without leakage current is disclosed, which comprises a P-substrate. There is an N-type epitaxial layer formed on the P-substrate, and a first N-heavily doped area, a first P-heavily doped area, an electrostatic discharge (ESD) device and at least one deep isolation trench are formed in the N-epitaxial layer. A first N-buried area is formed in the bottom of the N-epitaxial layer to neighbor the P-substrate and located below the first N-heavily doped area and the first P-heavily doped area. The ESD device is coupled to the first N-heavily doped area. The deep isolation trench is not only adjacent to the first N-heavily doped area, but has a depth greater than a depth of the first N-buried area, thereby separating the first N-buried area and the ESD device.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 23, 2013
    Inventors: Che-Hao Chuang, Kun-Hsien Lin, Ryan Hsin-Chin Jiang
  • Publication number: 20130119508
    Abstract: Methods for fabricating bipolar junction transistors, bipolar junction transistors, and design structures for a bipolar junction transistor. The bipolar junction transistor may include a plurality of emitters that are arranged in distinct emitter fingers. A silicide layer is formed that covers an extrinsic base layer of the bipolar junction transistor and that fills the gaps between adjacent emitters. Non-conductive spacers on the emitter sidewalls electrically insulate the emitters from the silicide layer. The emitters extend through the extrinsic base layer and the silicide layer to contact the intrinsic base layer. The emitters may be formed using sacrificial emitter pedestals in a replacement-type process.
    Type: Application
    Filed: November 11, 2011
    Publication date: May 16, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Renata Camillo-Castillo, David L. Harame, Qizhi Liu, Ramana M. Malladi, John J. Pekarik
  • Patent number: 8405157
    Abstract: The invention relates to a BiMOS semiconductor component having a semiconductor substrate wherein, in a first active region, a depletion-type MOS transistor is formed comprising additional source and drain doping regions of the first conductivity type extending in the downward direction past the depletion region into the body doping region while, in a second active region, (101), a bipolar transistor (100) is formed, the base of which comprises a body doping region (112) and the collector of which comprises a deep pan (110), wherein an emitter doping region (114) of the first conductivity type and a base connection doping region (118) of the second conductivity type are formed in the body doping region. The semiconductor element can be produced with a particularly low process expenditure because it uses the same basic structure for the doping regions in the bipolar transistor as are used in the MOS transistor of the same semiconductor component.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: March 26, 2013
    Assignee: X-FAB Semiconductor Foundries AG
    Inventors: Thomas Uhlig, Felix Fuernhammer, Christoph Ellmers
  • Publication number: 20120319233
    Abstract: High performance bipolar transistors with raised extrinsic self-aligned base are integrated into a BiCMOS structure containing CMOS devices. By forming pad layers and raising the height of an intrinsic base layer relative to the source and drain of preexisting CMOS devices and by forming an extrinsic base through selective epitaxy, the effect of topographical variations is minimized during a lithographic patterning of the extrinsic base. Also, by not employing any chemical mechanical planarization process during the fabrication of the bipolar structures, complexity of process integration is reduced. Internal spacers or external spacers may be formed to isolate the base from the emitter. The pad layers, the intrinsic base layer, and the extrinsic base layer form a mesa structure with coincident outer sidewall surfaces.
    Type: Application
    Filed: May 15, 2012
    Publication date: December 20, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Natalie B. Feilchenfeld, Bradley A. Orner, Benjamin T. Voegeli
  • Patent number: 8304858
    Abstract: In a semiconductor device of the present invention, a first base region 16 is extended to a part under a gate electrode 7 while having a vertical concentration profile of an impurity that increases from the surface of a semiconductor layer 3 and becomes maximum under an emitter region 5, and the length in the lateral direction from a point where the impurity concentration becomes maximum located under an end of the gate electrode 7 to the boundary with a second base region 15 is not smaller than the length in the vertical direction from the point where the impurity concentration becomes maximum to the boundary with the second base region 15.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: November 6, 2012
    Assignee: Panasonic Corporation
    Inventors: Teruhisa Ikuta, Yoshinobu Sato
  • Patent number: 8283749
    Abstract: Semiconductor devices with multiple floating guard ring edge termination structures and methods of fabricating same are disclosed. A method for fabricating guard rings in a semiconductor device that includes forming a mesa structure on a semiconductor layer stack, the semiconductor stack including two or more layers of semiconductor materials including a first layer and a second layer, said second layer being on top of said first layer, forming trenches for guard rings in the first layer outside a periphery of said mesa, and forming guard rings in the trenches. The top surfaces of said guard rings have a lower elevation than a top surface of said first layer.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: October 9, 2012
    Assignee: Northrop Grumman Systems Corporation
    Inventor: John V. Veliadis
  • Patent number: 8278736
    Abstract: An electrostatic discharge protection device coupled between a first power line and a second power line is provided. A first N-type doped region is formed in a P-type well. A first P-type doped region is formed in the first N-type doped region. A second P-type doped region includes a first portion and a second portion. The first portion of the second P-type doped region is formed in the first N-type doped region. The second portion of the second P-type doped region is formed outside of the first N-type doped region. A second N-type doped region is formed in the first portion of the second P-type doped region. The first P-type doped region, the first N-type doped region, the second P-type doped region and the second N-type doped region constitute an insulated gate bipolar transistor (IGBT).
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: October 2, 2012
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Yeh-Ning Jou, Chia-Wei Hung, Shu-Ling Chang, Hwa-Chyi Chiou, Yeh-Jen Huang
  • Patent number: 8227832
    Abstract: The present invention provides a multi-finger structure of a SiGe heterojunction bipolar transistor (HBT). It is consisted of plural SiGe HBT single cells. The multi-finger structure is in a form of C/BEBC/BEBC/.../C, wherein, C, B, E respectively stands for collector, base and emitter; CBEBC stands for a SiGe HBT single cell. The collector region is consisted of an n type ion implanted layer inside the active region. The bottom of the implanted layer is connected to two n type pseudo buried layers. The two pseudo buried layers are formed through implantation to the bottom of the shallow trenches that surround the collector active region. Two collectors are picked up by deep trench contact through the field oxide above the two pseudo buried layers. The present invention can reduce junction capacitance, decrease collector electrode output resistance, and improve device frequency characteristics.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: July 24, 2012
    Assignee: Shanghai Hua Hong NEC Electronics Co., Ltd.
    Inventors: Tzuyin Chiu, Zhengliang Zhou, Xiongbin Chen
  • Patent number: 8129249
    Abstract: Integrated transistor and method for the production is disclosed. An explanation is given of, inter alia, a transistor having an electrically insulating isolating trench extending from a main area in the direction of a connection region remote from the main area. Moreover, the transistor contains an auxiliary trench extending from the main area as far as the connection region remote from the main area. The transistor requires a small chip area and has outstanding electrical properties.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: March 6, 2012
    Assignee: Infineon Technologies AG
    Inventors: Karlheinz Mueller, Klaus Roeschlau
  • Patent number: 8115256
    Abstract: A semiconductor device includes an inverter having an NMOSFET and a PMOSFET having sources, drains and gate electrodes respectively, the drains being connected to each other and the gate electrodes being connected to each other, and a pnp bipolar transistor including a collector (C), a base (B) and an emitter (E), the base (B) receiving an output of the inverter.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: February 14, 2012
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Haruki Yoneda, Hideaki Fujiwara
  • Patent number: 8105911
    Abstract: Semiconductor devices with multiple floating guard ring edge termination structures and methods of fabricating same are disclosed. A method for fabricating guard rings in a semiconductor device that includes forming a mesa structure on a semiconductor layer stack, the semiconductor stack including two or more layers of semiconductor materials including a first layer and a second layer, said second layer being on top of said first layer, forming trenches for guard rings in the first layer outside a periphery of said mesa, and forming guard rings in the trenches. The top surfaces of said guard rings have a lower elevation than a top surface of said first layer.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: January 31, 2012
    Assignee: Northrop Grumman Systems Corporation
    Inventor: John V. Veliadis
  • Patent number: 8049307
    Abstract: Insulated gate bipolar transistor (IGBT) electrostatic discharge (ESD) protection devices are presented. An IGBT-ESD device includes a semiconductor substrate and patterned insulation regions disposed on the semiconductor substrate defining a first active region and a second active region. A high-V N-well is formed in the first active region of the semiconductor substrate. A P-body doped region is formed in the second active region of the semiconductor substrate, wherein the high-V N-well and the P-body doped region are separated with a predetermined distance exposing the semiconductor substrate. A P+ doped drain region is disposed in the high-V N-well. A P+ diffused region and an N+ doped source region are disposed in the P-body doped region. A gate structure is disposed on the semiconductor substrate with one end adjacent to the N+ doped source region and the other end extending over the insulation region.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: November 1, 2011
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Yeh-Ning Jou, Shang-Hui Tu, Jui-Chun Chang, Chen-Wei Wu
  • Publication number: 20110241159
    Abstract: A semiconductor amplifier is provided comprising, a substrate and one or more unit amplifying cells (UACs) formed on the substrate, wherein each UAC is laterally surrounded by a first lateral dielectric filled trench (DFT) isolation wall extending at least to the substrate and multiple UACs are surrounded by a second lateral DFT isolation wall of similar depth outside the first isolation walls, and further semiconductor regions lying between the first isolation walls when two or more unit cells are present, and/or lying between the first and second isolation walls, are electrically floating with respect to the substrate. This reduces the parasitic capacitance of the amplifying cells and improves the power added efficiency. Excessive leakage between buried layer contacts when using high resistivity substrates is avoided by providing a further semiconductor layer of intermediate doping between the substrate and the buried layer contacts.
    Type: Application
    Filed: June 14, 2011
    Publication date: October 6, 2011
    Applicant: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Dragan Zupac, Brian D. Griesbach, Theresa M. Keller, Joel M. Keys, Sandra J. Wipf, Evan F. Yu
  • Patent number: 8026572
    Abstract: A semiconductor device having plural active and passive elements on one semiconductor substrate is manufactured in the following cost effective manner even when the active and passive elements include double sided electrode elements. When the semiconductor substrate is divided into plural field areas, an insulation separation trench that penetrates the semiconductor substrate surrounds each of the field areas, and each of the either of the plural active elements or the plural passive elements. Further, each of the plural elements has a pair of power electrodes for power supply respectively disposed on each of both sides of the semiconductor substrate to serve as the double sided electrode elements.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: September 27, 2011
    Assignee: DENSO CORPORATION
    Inventors: Yoshihiko Ozeki, Kenji Kouno, Tetsuo Fujii
  • Patent number: 8021952
    Abstract: Integrated transistor and method for the production is disclosed. An explanation is given of, inter alia, a transistor having an electrically insulating isolating trench extending from a main area in the direction of a connection region remote from the main area. Moreover, the transistor contains an auxiliary trench extending from the main area as far as the connection region remote from the main area. The transistor requires a small chip area and has outstanding electrical properties.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: September 20, 2011
    Assignee: Infineon Technologies AG
    Inventors: Karlheinz Mueller, Klaus Roeschlau
  • Patent number: 8017995
    Abstract: An electrical structure and method of forming. The electrical structure includes a semiconductor substrate comprising a deep trench, an oxide liner layer is formed over an exterior surface of the deep trench, and a field effect transistor (FET) formed within the semiconductor substrate. The first FET includes a source structure, a drain structure, and a gate structure. The gate structure includes a gate contact connected to a polysilicon fill structure. The polysilicon fill structure is formed over the oxide liner layer and within the deep trench. The polysilicon fill structure is configured to flow current laterally across the polysilicon fill structure such that the current will flow parallel to a top surface of the semiconductor substrate.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: September 13, 2011
    Assignee: International Business Machines Corporation
    Inventors: Jeffrey Peter Gambino, Benjamin Thomas Voegeli, Steven Howard Voldman, Michael Joseph Zierak
  • Publication number: 20110210418
    Abstract: Electrostatic discharge devices and methods of forming thereof are disclosed. In one embodiment, a semiconductor device includes an electrostatic discharge (ESD) device region disposed within a semiconductor body. A first ESD device is disposed in a first region of the ESD device region, and a second ESD device disposed in a second region of the ESD device region. The second region is separated from the first region by a first trench.
    Type: Application
    Filed: March 1, 2010
    Publication date: September 1, 2011
    Inventor: Kai Esmark
  • Patent number: 7989894
    Abstract: A method of fabricating a semiconductor-on-insulator device including: providing a first semiconductor wafer having an about 500 angstrom thick oxide layer thereover; etching the first semiconductor wafer to raise a pattern therein; doping the raised pattern of the first semiconductor wafer through the about 500 angstrom thick oxide layer; providing a second semiconductor wafer having an oxide thereover; and, bonding the first semiconductor wafer oxide to the second semiconductor wafer oxide at an elevated temperature.
    Type: Grant
    Filed: April 9, 2010
    Date of Patent: August 2, 2011
    Assignee: Kulite Semiconductor Products, Inc.
    Inventors: Anthony D. Kurtz, Alexander A. Ned