Including Isolation Structure Patents (Class 438/353)
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Patent number: 10535550Abstract: A semiconductor structure includes a plurality of semiconductor fins on an upper surface of a semiconductor substrate. The semiconductor fins spaced apart from one another by a respective trench to define a fin pitch. A multi-layer electrical isolation region is contained in each trench. The multi-layer electrical isolation region includes an oxide layer and a protective layer. The oxide layer includes a first material on an upper surface of the semiconductor substrate. The protective layer includes a second material on an upper surface of the oxide layer. The second material is different than the first material. The first material has a first etch resistance and the second material has a second etch resistance that is greater than the first etch resistance.Type: GrantFiled: August 28, 2017Date of Patent: January 14, 2020Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Michael P. Belyansky, Richard A. Conti, Dechao Guo, Devendra K. Sadana, Jay W. Strane
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Patent number: 10297454Abstract: A method is provided for fabricating a semiconductor device. The method includes providing a base substrate including a dummy gate electrode and an interlayer dielectric layer covering a sidewall of the dummy gate electrode. The method also includes forming a sacrificial layer covering a top surface of the interlayer dielectric layer by using a selective atomic layer deposition process, wherein the sacrificial layer exposes a top surface of the dummy gate electrode. In addition, the method includes forming an opening by using the sacrificial layer as an etch mask to remove the dummy gate electrode, and forming a metal gate electrode on the sacrificial layer and in the opening. Further, the method includes planarizing the metal gate electrode and the sacrificial layer until a top surface of the metal gate electrode is leveled with the top surface of the interlayer dielectric layer.Type: GrantFiled: October 27, 2016Date of Patent: May 21, 2019Assignees: SEMICONDUCTOR MANUFACTURING INTERNATIONAL (SHANGHAI) CORPORATION, SEMICONDUCTOR MANUFACTURING INTERNATIONAL (BEIJING) CORPORATIONInventors: Feng Lian Li, Jing Hua Ni
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Patent number: 9092590Abstract: An IC including first and second FDSOI UTBOX cells arranged in a row, the first having an nMOS transistor arranged plumb with and above a ground plane and an N-type well, and a pMOS transistor arranged plumb with and above a ground plane and a P-type well, the N-type well and the P-type well being arranged on either side of a row axis, wherein the second includes a diode protecting against antenna effects or a well tap cell, the second cell comprising a P-type well arranged in the alignment of the P-type well of the pMOS transistor and comprising an N-type well arranged in the alignment of the N-type well of the nMOS transistor, the second cell comprising a metal connection coupled to its P-type well and coupled to a higher-level metal connection element arranged plumb with the N-type well, the metal connection extending on either side of the axis.Type: GrantFiled: December 13, 2013Date of Patent: July 28, 2015Assignees: Commissariat a l'energie atomique et aux energies alternatives, STMicroelectronics SAInventors: Bastien Giraud, Philippe Flatresse, Matthieu Le Boulaire, Jean-Philippe Noel
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Publication number: 20150102384Abstract: An electrostatic discharge (ESD) protection device includes a semiconductor substrate comprising a buried insulator layer and a semiconductor layer over the buried insulator layer having a first conductivity type, and first and second bipolar transistor devices disposed in the semiconductor layer, laterally spaced from one another, and sharing a common collector region having a second conductivity type. The first and second bipolar transistor devices are configured in an asymmetrical arrangement in which the second bipolar transistor device includes a buried doped layer having the second conductivity type and extending along the buried insulator layer from the common collector region across a device area of the second bipolar transistor device.Type: ApplicationFiled: October 15, 2013Publication date: April 16, 2015Applicant: FREESCALE SEMICONDUCTOR, INC.Inventors: Rouying Zhan, Chai Ean Gill, Changsoo Hong, Michael H. Kaneshiro
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Patent number: 8975146Abstract: Device structures, fabrication methods, and design structures for a bipolar junction transistor. A first isolation region is formed in a substrate to define a lateral boundary for an active device region and an intrinsic base layer is formed on the substrate. The intrinsic base layer has a section overlying the active device region. After the intrinsic base layer is formed, the first isolation region is partially removed adjacent to the active device region to define a trench that is coextensive with the substrate in the active device region and that is coextensive with the first isolation region. The trench is at least partially filled with a dielectric material to define a second isolation region.Type: GrantFiled: May 1, 2013Date of Patent: March 10, 2015Assignee: International Business Machines CorporationInventors: Renata Camillo-Castillo, Marwan H. Khater
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Publication number: 20150054132Abstract: 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: ApplicationFiled: August 23, 2013Publication date: February 26, 2015Applicant: United Microelectronics Corp.Inventors: Chang-Tzu Wang, Pei-Shan Tseng, Tien-Hao Tang
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Publication number: 20150021738Abstract: Device structures, fabrication methods, and design structures for a bipolar junction transistor. A trench isolation region is formed in a substrate. The trench isolation region is coextensive with a collector in the substrate. A base layer is formed on the collector and on a first portion of the trench isolation region. A dielectric layer is formed on the base layer and on a second portion of the trench isolation region peripheral to the base layer. After the dielectric layer is formed, the trench isolation region is at least partially removed to define an air gap beneath the dielectric layer and the base layer.Type: ApplicationFiled: July 19, 2013Publication date: January 22, 2015Applicant: International Business Machines CorporationInventors: Renata Camillo-Castillo, Vibhor Jain, Vikas K. Kaushal, Marwan H. Khater, Anthony K. Stamper
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Publication number: 20140308792Abstract: Methods for producing bipolar transistors are provided. In one embodiment, the method includes producing a bipolar transistor including first and second connected emitter-base (EB) junctions of varying different depths. A buried layer (BL) collector is further produced to have a third depth greater than the depths of the EB junctions. The emitters and bases corresponding to the different EB junctions are provided during a chain implant. An isolation region may overlie the second EB junction location. The BL collector is laterally spaced from the first EB junction by a variable amount to facilitate adjustment of the transistor properties. The BL collector may or may not underlie at least a portion of the second EB junction. Regions of opposite conductivity type overlie and underlie the BL collector to preserve breakdown voltage. The transistor can be readily “tuned” by mask adjustments alone to meet various device requirements.Type: ApplicationFiled: June 24, 2014Publication date: October 16, 2014Inventors: Xin Lin, Bernhard H. Grote, Jiang-Kai Zuo
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Publication number: 20140264341Abstract: Fabrication methods, device structures, and design structures for a bipolar junction transistor. A dielectric structure is formed that is coextensive with a single crystal semiconductor material of a substrate in an active device region. A semiconductor layer is formed that includes a single crystal section coupled with the active device region. The semiconductor layer has an edge that overlaps with a top surface of the dielectric structure. An intrinsic base layer is formed on the semiconductor layer.Type: ApplicationFiled: March 13, 2013Publication date: September 18, 2014Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Renata Camillo-Castillo, David L. Harame, Vibhor Jain, Vikas K. Kaushal, Marwan H. Khater
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Publication number: 20140187014Abstract: Methods are provided for forming a device that includes merged vertical and lateral transistors with collector regions of a first conductivity type between upper and lower base regions of opposite conductivity type that are Ohmically coupled via intermediate regions of the same conductivity type and to the base contact. The emitter is provided in the upper base region and the collector contact is provided in outlying sinker regions extending to the thin collector regions and an underlying buried layer. As the collector voltage increases part of the thin collector regions become depleted of carriers from the top by the upper and from the bottom by the lower base regions. This clamps the collector regions' voltage well below the breakdown voltage of the PN junction formed between the buried layer and the lower base region. The gain and Early Voltage are increased and decoupled and a higher breakdown voltage is obtained.Type: ApplicationFiled: March 6, 2014Publication date: July 3, 2014Applicant: FREESCALE SEMICONDUCTOR, INC.Inventors: XIN LIN, DANIEL J. BLOMBERG, JIANG-KAI ZUO
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Patent number: 8749223Abstract: Various exemplary embodiments relate to an isolation device including a semiconductor layer and an insulation layer. The insulation layer insulates a central portion of the semiconductor layer. A high voltage terminal connects to the insulation layer, a first low voltage terminal connects to a first non-insulated portion of the semiconductor layer, and a second low voltage terminal connects to a second non-insulated portion of the semiconductor layer. The first and second low voltage terminals are electrically connected via the semiconductor layer. A voltage applied to the high voltage terminal influences the conductance of the semiconductor layer. The high voltage terminal is galvanically isolated from the first and second low voltage terminals.Type: GrantFiled: June 22, 2011Date of Patent: June 10, 2014Assignee: NXP B.V.Inventors: Maarten Jacobus Swanenberg, Dusan Golubovic
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Patent number: 8679938Abstract: A method for formation of a shallow trench isolation (STI) in an active region of a device comprising trench capacitive elements, the trench capacitive elements comprising a metal plate and a high-k dielectric includes etching a STI trench in the active region of the device, wherein the STI trench is directly adjacent to at least one of the metal plate or high-k dielectric of the trench capacitive elements; and forming an oxide liner in the STI trench, wherein the oxide liner is formed selectively to the metal plate or high-k dielectric, wherein forming the oxide liner is performed at a temperature of about 600° C. or less.Type: GrantFiled: February 6, 2012Date of Patent: March 25, 2014Assignee: International Business Machines CorporationInventors: Sunfei Fang, Oleg Gluschenkov, Byeong Y. Kim, Rishikesh Krishnan, Daewon Yang
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Patent number: 8673726Abstract: Disclosed are embodiments of a bipolar or heterojunction bipolar transistor and a method of forming the transistor. The transistor can incorporate a dielectric layer sandwiched between an intrinsic base layer and a raised extrinsic base layer to reduce collector-base capacitance Ccb, a sidewall-defined conductive strap for an intrinsic base layer to extrinsic base layer link-up region to reduce base resistance Rb and a dielectric spacer between the extrinsic base layer and an emitter layer to reduce base-emitter Cbe capacitance. The method allows for self-aligning of the emitter to base regions and incorporates the use of a sacrificial dielectric layer, which must be thick enough to withstand etch and cleaning processes and still remain intact to function as an etch stop layer when the conductive strap is subsequently formed. A chemically enhanced high pressure, low temperature oxidation (HIPOX) process can be used to form such a sacrificial dielectric layer.Type: GrantFiled: February 8, 2013Date of Patent: March 18, 2014Assignee: International Business Machines CorporationInventors: David L. Harame, Russell T. Herrin, Qizhi Liu
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Publication number: 20140061858Abstract: A method of fabricating a bipolar transistor including emitter and base regions having first and second conductivity types, respectively, includes forming an isolation region at a surface of a semiconductor substrate, the isolation region having an edge that defines a boundary of an active area of the emitter region, and implanting dopant of the second conductivity type through a mask opening to form the base region in the semiconductor substrate. The mask opening spans the edge of the isolation region such that an extent to which the dopant passes through the isolation region varies laterally to establish a variable depth contour of the base region.Type: ApplicationFiled: September 6, 2012Publication date: March 6, 2014Applicant: Freescale Semiconductor, Inc.Inventors: Xin Lin, Daniel J. Blomberg, Jiangkai Zuo
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Publication number: 20140054747Abstract: A bipolar transistor having an upper surface, comprises a multilevel collector structure formed in a base region of opposite conductivity type and having a first part of a first vertical extent coupled to a collector contact, an adjacent second part having a second vertical extent a third part of a third vertical extent and desirably of a depth different from a depth of the second part, coupled to the second part by a fourth part desirably having a fourth vertical extent less than the third vertical extent. A first base region portion overlies the second part, a second base region portion separates the third part from an overlying base contact region, and other base region portions laterally surround and underlie the multilevel collector structure. An emitter proximate the upper surface is laterally spaced from the multilevel collector structure. This combination provides improved gain, Early Voltage and breakdown voltages.Type: ApplicationFiled: August 21, 2012Publication date: February 27, 2014Applicant: Freescale Semiconductor, Inc.Inventors: Xin Lin, Daniel J. Blomberg (Dan), Jiang-Kai Zuo
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Patent number: 8653627Abstract: A semiconductor crystal having a recombination-inhibiting semiconductor layer of a second conductive type that is disposed in the vicinity of the surface between a base contact region and emitter regions and that separates the semiconductor surface having a large number of surface states from the portion that primarily conducts the positive hole electric current and the electron current. Recombination is inhibited, and the current amplification factor is thereby improved and the ON voltage reduced.Type: GrantFiled: May 6, 2013Date of Patent: February 18, 2014Assignee: Honda Motor Co., Ltd.Inventor: Ken-ichi Nonaka
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Patent number: 8624224Abstract: Carbon nanotube (CNT)-based devices and technology for their fabrication are disclosed. The planar, multiple layer deposition technique and simple methods of change of the nanotube conductivity type during the device processing are utilized to provide a simple and cost effective technology for large scale circuit integration. Such devices as p-n diode, CMOS-like circuit, bipolar transistor, light emitting diode and laser are disclosed, all of them are expected to have superior performance then their semiconductor-based counterparts due to excellent CNT electrical and optical properties. When fabricated on semiconductor wafers, the CNT-based devices can be combined with the conventional semiconductor circuit elements, thus producing hybrid devices and circuits.Type: GrantFiled: January 7, 2011Date of Patent: January 7, 2014Assignee: Nano-Electronic and Photonic Devices and Circuits, LLCInventor: Alexander Kastalsky
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Patent number: 8609509Abstract: When forming sophisticated high-k metal gate electrode structures in an early manufacturing stage, superior process robustness, reduced yield loss and an enhanced degree of flexibility in designing the overall process flow may be accomplished by forming and patterning the sensitive gate materials prior to forming isolation regions.Type: GrantFiled: September 22, 2011Date of Patent: December 17, 2013Assignee: GLOBALFOUNDRIES Inc.Inventors: Thilo Scheiper, Peter Baars
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Publication number: 20130313677Abstract: A structure for picking up a collector region is disclosed. The structure includes a pair of polysilicon stacks formed in the isolation regions and extending below the collector region; and a pair of collector electrodes contacting on the polysilicon stacks, wherein the pair of polysilicon stacks includes: a first polysilicon layer located below the isolation regions, and a second polysilicon layer located on and in contact with the first polysilicon layer, the first polysilicon layer being doped with a dopant having a higher diffusivity or higher concentration than a dopant of the second polysilicon layer, wherein a depth of the polysilicon stacks is greater than a depth of the collector region; the depth of the collector region is greater than a depth of the second polysilicon layer; and the depth of the second polysilicon layer is greater than a depth of the isolation regions.Type: ApplicationFiled: May 21, 2013Publication date: November 28, 2013Applicant: SHANGHAI HUA HONG NEC ELECTRONICS CO., LTD.Inventor: Wensheng Qian
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Patent number: 8530299Abstract: 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: GrantFiled: January 18, 2012Date of Patent: September 10, 2013Assignee: Semiconductor Components Industries, LLCInventors: Gary H. Loechelt, Gordon M. Grivna
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Patent number: 8524569Abstract: In a method of forming an isolation layer, first and second trenches are formed on a substrate. The first and the second trenches have first and second widths, respectively, and the second width is greater than the first width. A second isolation layer pattern partially fills the second trench. A first isolation layer pattern and the third isolation layer pattern are formed. The first isolation layer pattern fills the first trench, and the third isolation layer pattern is formed on the second isolation layer pattern and fills a remaining portion of the second trench.Type: GrantFiled: May 17, 2011Date of Patent: September 3, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Dae-Hyuk Kang, Jung-Won Lee, Bo-Un Yoon, Kun-Tack Lee
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Patent number: 8513087Abstract: Processes for forming isolation structures for semiconductor devices include forming a submerged floor isolation region and a filed trench which together enclose an isolated pocket of the substrate. One process aligns the trench to the floor isolation region. In another process a second, narrower trench is formed in the isolated pocket and filled with a dielectric material while the dielectric material is deposited so as to line the walls and floor of the first trench. The substrate does not contain an epitaxial layer, thereby overcoming the many problems associated with fabricating the same.Type: GrantFiled: April 27, 2011Date of Patent: August 20, 2013Assignee: Advanced Analogic Technologies, IncorporatedInventors: Donald R. Disney, Richard K. Williams
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Patent number: 8501549Abstract: A method of manufacturing a reverse blocking insulated gate bipolar transistor to form an isolation layer for bending and extending a pn junction, which exhibits a high reverse withstand voltage, to the front surface side. This ensures a high withstand voltage in the reversed direction and reduces leakage current in the reversely biased condition. Formation of a tapered groove by an anisotropic alkali etching process is conducted, resulting in a semiconductor substrate left with a thickness of at least 60 ?m between one principal surface and the bottom surface of the tapered groove formed from the other principal surface.Type: GrantFiled: June 29, 2012Date of Patent: August 6, 2013Assignee: Fuji Electric Co., Ltd.Inventor: Masaaki Ogino
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Patent number: 8501572Abstract: 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: GrantFiled: September 2, 2010Date of Patent: August 6, 2013Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Chun-Tsung Kuo, Shih-Chang Liu, Chia-Shiung Tsai
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Publication number: 20130168732Abstract: An electrostatic discharge (ESD) protection device includes a well region formed from semiconductor material with a first doping type and a floating base formed from semiconductor material with a second doping type. The floating base is disposed vertically above the well region. The ESD also includes a first terminal receiving region formed from semiconductor material with a third doping type. The first terminal receiving region is disposed vertically above the floating base. The ESD further includes a second terminal receiving region. The second terminal receiving region is laterally spaced apart from the first terminal receiving region by silicon trench isolation (STI) region. In some embodiments, the second terminal receiving region is formed from semiconductor material with the third doping type to form a bipolar junction transmitter (BJT) or with a fourth doping type to form a silicon controlled rectifier (SCR).Type: ApplicationFiled: December 28, 2011Publication date: July 4, 2013Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Wun-Jie Lin, Ching-Hsiung Lo, Jen-Chou Tseng
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Publication number: 20130168821Abstract: A Bipolar Junction Transistor with an intrinsic base, wherein the intrinsic base includes a top surface and two side walls orthogonal to the top surface, and a base contact electrically coupled to the side walls of the intrinsic base. In one embodiment an apparatus can include a plurality of Bipolar Junction Transistors, and a base contact electrically coupled to the side walls of the intrinsic bases of each BJT.Type: ApplicationFiled: January 4, 2012Publication date: July 4, 2013Applicant: International Business Machines CorporationInventors: Jin Cai, Tak H. Ning
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Patent number: 8460994Abstract: A semiconductor crystal includes a recombination-inhibiting semiconductor layer (17) of a second conductive type that is disposed in the vicinity of the surface between a base contact region (16) and emitter regions (14) and that separates the semiconductor surface having a large number of surface states from the portion that primarily conducts the positive hole electric current and the electron current. Recombination is inhibited, and the current amplification factor is thereby improved and the ON voltage reduced.Type: GrantFiled: June 9, 2006Date of Patent: June 11, 2013Assignee: Honda Motor Co., Ltd.Inventor: Ken-ichi Nonaka
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Publication number: 20130119434Abstract: Disclosed are embodiments of a transistor (e.g., bipolar junction transistor (BJT) or a heterojunction bipolar transistor (HBT)) and a method of forming the transistor with a collector region having a protected upper edge portion for reduced base-collector junction capacitance Cbc. In the embodiments, a collector region is positioned laterally adjacent to a trench isolation region within a substrate. Mask layer(s) cover the trench isolation region and further extend laterally onto the edge portion of the collector region. A first section of an intrinsic base layer is positioned above a center portion of the collector region and a second section of the intrinsic base layer is positioned above the mask layer(s). During processing these mask layer(s) prevent divot formation in the upper corner of the trench isolation region at the isolation region-collector region interface and further limit dopant diffusion from a subsequently formed raised extrinsic base layer into the collector region.Type: ApplicationFiled: November 15, 2011Publication date: May 16, 2013Applicant: International Business Machines CorporationInventors: JAMES W. ADKISSON, David L. Harame, Robert K. Leidy, Qizhi Liu
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Publication number: 20130065374Abstract: A method of fabricating an integrated circuit including bipolar transistors that reduces the effects of transistor performance degradation and transistor mismatch caused by charging during plasma etch, and the integrated circuit so formed. A fluorine implant is performed at those locations at which isolation dielectric structures between base and emitter are to be formed, prior to formation of the isolation dielectric. The isolation dielectric structures may be formed by either shallow trench isolation, in which the fluorine implant is performed after trench etch, or LOCOS oxidation, in which the fluorine implant is performed prior to thermal oxidation. The fluorine implant may be normal to the device surface or at an angle from the normal. Completion of the integrated circuit is then carried out, including the use of relatively thick copper metallization requiring plasma etch.Type: ApplicationFiled: April 19, 2012Publication date: March 14, 2013Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Weidong Tian, Ming-Yeh Chuang, Rajni J. Aggarwal
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Publication number: 20130056855Abstract: Disclosed is an integrated circuit and a method of manufacturing an integrated circuit comprising a bipolar transistor, the method comprising providing a substrate comprising a pair of isolation regions separated by an active region comprising a collector; forming a base layer stack over said substrate; forming a migration layer having a first migration temperature and an etch stop layer; forming a base contact layer having a second migration temperature; etching an emitter window in the base contact layer, thereby forming cavities extending from the emitter window; and exposing the resultant structure to the first migration temperature in a hydrogen atmosphere, thereby filling the cavities with the migration layer material.Type: ApplicationFiled: August 30, 2012Publication date: March 7, 2013Applicant: NXP B.V.Inventors: Johannes Josephus Theodorus Marinus DONKERS, Petrus Hubertus Cornelis MAGNEE, Blandine DURIEZ, Evelyne GRIDELET, Hans MERTENS, Tony VANHOUCKE
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Publication number: 20130049169Abstract: A bipolar junction transistor includes a first trench element isolation film, a second trench element isolation film, a first base region, a second base region, a collector region, a first well, a second well, an emitter, a collector, and bases. The second well is formed by implanting an n-type impurity into the semiconductor substrate, and the emitter is formed by implanting the n-type impurity into the emitter region between the first trench element isolation film and the second well. The collector is formed by implanting the n-type impurity into the collector region between the first well and the second trench element isolation film, and the bases are formed by implanting the p-type impurity into the first base region and into the second base region between the emitter region and the second well.Type: ApplicationFiled: January 9, 2012Publication date: February 28, 2013Inventors: JAE HYUN YOO, Jong Min Kim
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Publication number: 20130032891Abstract: A method of manufacturing an integrated circuit comprising bipolar transistors including first and second type bipolar transistors, the method comprising providing a substrate comprising first isolation regions each separated from a second isolation region by an active region comprising a collector impurity of one of the bipolar transistors; forming a base layer stack over the substrate; forming a first emitter cap layer of a first effective thickness over the base layer stack in the areas of the first type bipolar transistor; forming a second emitter cap layer of a second effective thickness different from the first effective thickness over the base layer stack in the areas of the second type bipolar transistor; and forming an emitter over the emitter cap layer of each of the bipolar transistors. An IC in accordance with this method.Type: ApplicationFiled: July 27, 2012Publication date: February 7, 2013Applicant: NXP B.V.Inventors: Hans Mertens, Johannes Theodorus Marinus Donkers, Evelyne Gridelet, Tony Vanhoucke, Petrus Hubertus Cornelis Magnee
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Patent number: 8357985Abstract: A bipolar transistor comprising an emitter region, a base region and a collector region, and a guard region spaced from and surrounding the base. The guard region can be formed in the same steps that form the base, and can serve to spread out the depletion layer in operation.Type: GrantFiled: January 13, 2012Date of Patent: January 22, 2013Assignee: Analog Devices, Inc.Inventors: William Allan Lane, Andrew David Bain, Derek Frederick Bowers, Paul Malachy Daly, Anne Maria Deignan, Michael Thomas Dunbar, Patrick Martin McGuinness, Bernard Patrick Stenson
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Patent number: 8350352Abstract: A bipolar transistor comprising an emitter region, a base region and a collector region, and a guard region spaced from and surrounding the base. The guard region can be formed in the same steps that form the base, and can serve to spread out the depletion layer in operation.Type: GrantFiled: November 2, 2009Date of Patent: January 8, 2013Assignee: Analog Devices, Inc.Inventors: William Allan Lane, Andrew David Bain, Derek Frederick Bowers, Paul Malachy Daly, Anne Maria Deignan, Michael Thomas Dunbar, Patrick Martin McGuinness, Bernard Patrick Stenson
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Publication number: 20120319137Abstract: An electrostatic discharge (ESD) protection element includes a collector area, a first barrier area, a semiconductor area, a second barrier area and an emitter area. The collector area has a first conductivity type. The first barrier area borders on the collector area and has a second conductivity type. The semiconductor area borders on the first barrier area and is an intrinsic semiconductor area, or has the first or second conductivity type and a dopant concentration which is lower than a dopant concentration of the first barrier area. The second barrier area borders on the semiconductor area and has the second conductivity type and a higher dopant concentration than the semiconductor area. The emitter area borders on the second barrier area and has the first conductivity type.Type: ApplicationFiled: August 30, 2012Publication date: December 20, 2012Applicant: INFINEON TECHNOLOGIES AGInventors: Wolfgang Klein, Hans Taddiken, Winfried Bakalski
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Patent number: 8319317Abstract: Problems with a conventional mesa type semiconductor device, which are deterioration in a withstand voltage and occurrence of a leakage current caused by reduced thickness of an insulation film on an inner wall of a mesa groove corresponding to a PN junction, are solved using an inexpensive material, and a mesa type semiconductor device of high withstand voltage and high reliability is offered together with its manufacturing method. A stable protection film made of a thermal oxide film is formed on the inner wall of the mesa groove in the mesa type semiconductor device to cover and protect the PN junction, and an insulation film having negative electric charges is formed to fill a space in the mesa groove covered with the thermal oxide film so that an electron accumulation layer is not easily formed at an interface between an N? type semiconductor layer and the thermal oxide film.Type: GrantFiled: June 9, 2009Date of Patent: November 27, 2012Assignees: SANYO Semiconductor Co., Ltd., SANYO Semiconductor Manufacturing Co., Ltd., Semiconductor Components Industries, LLCInventors: Katsuyuki Seki, Naofumi Tsuchiya, Akira Suzuki, Kikuo Okada
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Patent number: 8293615Abstract: FDSOI devices and methods for the fabrication thereof are provided. In one aspect, a method for fabricating a device includes the following steps. A wafer is provided having a substrate, a BOX and a SOI layer. A hardmask layer is deposited over the SOI layer. A photoresist layer is deposited over the hardmask layer and patterned into groups of segments. A tilted implant is performed to damage all but those portions of the hardmask layer covered or shadowed by the segments. Portions of the hardmask layer damaged by the implant are removed. A first etch is performed through the hardmask layer to form a deep trench in the SOI layer, the BOX and at least a portion of the substrate. The hardmask layer is patterned using the patterned photoresist layer. A second etch is performed through the hardmask layer to form shallow trenches in the SOI layer.Type: GrantFiled: March 24, 2011Date of Patent: October 23, 2012Assignee: International Business Machines CorporationInventors: Kangguo Cheng, Robert Heath Dennard, Bruce B. Doris, Ali Khakifirooz, Ghavam G. Shahidi
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Publication number: 20120248575Abstract: The present invention provides a semiconductor with a multilayered contact structure. The multilayered structure includes a metal contact placed on an active region of a semiconductor and a metal contact extension placed on the metal contact.Type: ApplicationFiled: December 21, 2009Publication date: October 4, 2012Applicant: NXP B.V.Inventors: Soenke Habenicht, Detief Oelgeschlaeger, Olrik Schumacher, Stefan Bengt Berglund
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Publication number: 20120241870Abstract: The present invention discloses a bipolar junction transistor (BJT) with surface protection and a manufacturing method thereof. The BJT includes: a first conductive type base, a second conductive type emitter, and a second conductive type collector, which are formed in a substrate, wherein the base is formed between and separates the emitter and the collector, and the base includes a base contact region functioning as an electrical contact node of the base; and a gate structure which is formed on the substrate between the base contact region and the second conductive type emitter.Type: ApplicationFiled: November 8, 2011Publication date: September 27, 2012Inventors: Chien-Ling Chan, Yuh-Chyuan Wang, Hung-Der Su
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Patent number: 8183574Abstract: The present invention relates to an electronic device for providing improved heat transporting capability for protecting heat sensitive electronics and a method for producing the same. The present invention also relates to uses of the electronic device for various applications such as in LED lamps for signalizing, signage, automative and illumination applications or a display apparatus or any combinations thereof.Type: GrantFiled: April 17, 2007Date of Patent: May 22, 2012Assignee: NXP B.V.Inventor: Gilles Ferru
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Patent number: 8125045Abstract: A dielectric isolation type semiconductor device includes a dielectric isolation type substrate in which a support substrate, an embedded dielectric layer, and a first conductive type semiconductor substrate of a low impurity concentration are laminated one over another. The semiconductor substrate includes a first semiconductor region of a first conductive type having a high impurity concentration, a second semiconductor region of a second conductive type having a high impurity concentration arranged so as to surround the first semiconductor region, a first main electrode joined to a surface of the first semiconductor region, and a second main electrode joined to a surface of the second semiconductor region. A first dielectric portion is arranged adjacent the embedded dielectric layer so as to surround a region of the support substrate superposed on the first semiconductor region in a direction of lamination thereof, and a wire connected with the first main electrode.Type: GrantFiled: December 29, 2008Date of Patent: February 28, 2012Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hajime Akiyama
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Patent number: 8120136Abstract: A bipolar transistor comprising an emitter region, a base region and a collector region, and a guard region spaced from and surrounding the base. The guard region can be formed in the same steps that form the base, and can serve to spread out the depletion layer in operation.Type: GrantFiled: November 2, 2009Date of Patent: February 21, 2012Assignee: Analog Devices, Inc.Inventors: William Allan Lane, Andrew David Bain, Derek Frederick Bowers, Paul Malachy Daly, Anne Maria Deignan, Michael Thomas Dunbar, Patrick Martin McGuiness, Bernard Patrick Stenson
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Patent number: 8084706Abstract: A method is disclosed for on-the-fly processing at least one structure of a group of structures with a pulsed laser output. The method includes the steps of relatively positioning the group of structures and the pulsed laser output axis with non-constant velocity, and applying the pulsed laser output to the at least one structure of the group of structures during the step of relatively positioning the group of structures and the pulsed laser output axis with non-constant velocity.Type: GrantFiled: September 15, 2006Date of Patent: December 27, 2011Assignee: GSI Group CorporationInventors: Shepard D. Johnson, Bo Gu
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Publication number: 20110312147Abstract: Disclosed are embodiments of a bipolar or heterojunction bipolar transistor and a method of forming the transistor. The transistor can incorporate a dielectric layer sandwiched between an intrinsic base layer and a raised extrinsic base layer to reduce collector-base capacitance Ccb, a sidewall-defined conductive strap for an intrinsic base layer to extrinsic base layer link-up region to reduce base resistance Rb and a dielectric spacer between the extrinsic base layer and an emitter layer to reduce base-emitter Cbe capacitance. The method allows for self-aligning of the emitter to base regions and incorporates the use of a sacrificial dielectric layer, which must be thick enough to withstand etch and cleaning processes and still remain intact to function as an etch stop layer when the conductive strap is subsequently formed. A chemically enhanced high pressure, low temperature oxidation (HIPOX) process can be used to form such a sacrificial dielectric layer.Type: ApplicationFiled: December 14, 2010Publication date: December 22, 2011Applicant: International Business Machines CorporationInventors: David L. Harame, Russell T. Herrin, Qizhi Liu
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Publication number: 20110309471Abstract: Disclosed are embodiments of an improved transistor structure (e.g., a bipolar transistor (BT) structure or heterojunction bipolar transistor (HBT) structure) and a method of forming the transistor structure. The structure embodiments can incorporate a dielectric layer sandwiched between an intrinsic base layer and a raised extrinsic base layer to reduce collector-base capacitance Ccb, a sidewall-defined conductive strap for an intrinsic base layer to extrinsic base layer link-up region to reduce base resistance Rb and a dielectric spacer between the extrinsic base layer and an emitter layer to reduce base-emitter Cbe capacitance. The method embodiments allow for self-aligning of the emitter to base regions and further allow the geometries of different features (e.g., the thickness of the dielectric layer, the width of the conductive strap, the width of the dielectric spacer and the width of the emitter layer) to be selectively adjusted in order to optimize transistor performance.Type: ApplicationFiled: June 17, 2010Publication date: December 22, 2011Applicant: International Business Machines CorporationInventors: Renata Camillo-Castillo, Mattias E. Dahlstrom, Peter B. Gray, David L. Harame, Russell T. Herrin, Alvin J. Joseph, Andreas D. Stricker
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Patent number: 8076208Abstract: Transistors are formed using pitch multiplication. Each transistor includes a source region and a drain region connected by strips of active area material separated by shallow trench isolaton structures. The shallow trench isolaton structures are formed by dielectric material filling trenches that are formed by pitch multiplication. During pitch multiplication, rows of spaced-apart mandrels are formed and spacer material is blanket deposited over the mandrels. The spacer material is etched to define spacers on sidewalls of the mandrels and the mandrels are subsequently removed, thereby leaving free-standing spacers. The spacers constitute a mask, through which an underlying substrate is etched to form the trenches and strips of active area material. The trenches are filled to form the shallow trench isolaton structures. The substrate is doped to form source, drain and channel regions and a gate is formed over the channel region.Type: GrantFiled: July 3, 2008Date of Patent: December 13, 2011Assignee: Micron Technology, Inc.Inventor: Mike Smith
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Patent number: 8071454Abstract: A method for manufacturing a dielectric isolation type semiconductor device comprises: forming a plurality of trenches in a first region on a major surface of a semiconductor substrate; forming a first dielectric layer on the major surface of the semiconductor substrate and a first thick dielectric layer in the first region by oxidizing a surface of the semiconductor substrate; bonding a semiconductor layer of a first conductive type to the semiconductor substrate via the first dielectric layer; forming a first semiconductor region by implanting an impurity into a part of the semiconductor layer above the first thick dielectric layer; forming a second semiconductor region by implanting an impurity of a second conductive type into a part of the semiconductor layer so as to surround the first semiconductor region separating from the first semiconductor region.Type: GrantFiled: December 3, 2010Date of Patent: December 6, 2011Assignee: Mitsubishi Electric CorporationInventor: Hajime Akiyama
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Publication number: 20110269289Abstract: A method of manufacturing a transistor device (600), wherein the method comprises forming a trench (106) in a substrate (102), only partially filling the trench (106) with electrically insulating material (202), and implanting a collector region (304) of a bipolar transistor (608) of the transistor device (600) through the only partially filled trench (106).Type: ApplicationFiled: July 8, 2009Publication date: November 3, 2011Applicant: NXP B.V.Inventors: Philippe Meunier-Beillard, Hans Mertens
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Publication number: 20110237035Abstract: A semiconductor device can be formed without use of an STI process. An insulating layer is formed over a semiconductor body. Portions of the insulating layer are removed to expose the semiconductor body, e.g., to expose bare silicon. A semiconductor material, e.g., silicon, is grown over the exposed semiconductor body. A device, such as a transistor, can then be formed in the grown semiconductor material.Type: ApplicationFiled: June 9, 2011Publication date: September 29, 2011Inventors: Jiang Yan, Danny Pak-Chum Shum
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Patent number: 8021941Abstract: A novel and useful apparatus for and method of providing noise isolation between integrated circuit devices on a semiconductor chip. The invention addresses the problem of noise generated by digital switching devices in an integrated circuit chip that may couple through the silicon substrate into sensitive analog circuits (e.g., PLLs, transceivers, ADCs, etc.) causing a significant degradation in performance of the sensitive analog circuits. The invention utilizes a deep trench capacitor (DTCAP) device connected to ground to isolate victim circuits from aggressor noise sources on the same integrated circuit chip. The deep penetration of the capacitor creates a grounded shield deep in the substrate as compared with other prior art shielding techniques.Type: GrantFiled: July 21, 2009Date of Patent: September 20, 2011Assignee: International Business Machines CorporationInventors: Phillip Francis Chapman, David Goren, Rajendran Krishnasamy, Benny Sheinman, Shlomo Shlafman, Raminderpal Singh, Wayne H. Woods