Transistor (epo) Patents (Class 257/E21.37)
  • Patent number: 7935577
    Abstract: A trench is formed in a semiconductor region. A dielectric layer lining sidewalls and bottom surface of the trench is formed. The dielectric layer is thicker along lower sidewalls and the bottom surface than along upper sidewalls of the trench. After forming the dielectric layer, a lower portion of the trench is filled with a shield electrode. Dielectric spacers are formed along the upper trench sidewalls. After forming the dielectric spacers, an inter-electrode dielectric (IED) is formed in the trench over the shield electrode. After forming the IED, the dielectric spacers are removed.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: May 3, 2011
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Thomas E. Grebs, Nathan Lawrence Kraft, Rodney Ridley
  • Patent number: 7919830
    Abstract: A method for fabricating a low-value resistor such as a ballast resistor for bipolar junction transistors. The resistor may be fabricated using layers of appropriate sheet resistance so as to achieve low resistance values in a compact layout. The method may rely on layers already provided by a conventional CMOS process flow, such as contact plugs and fully silicided (FUSI) metal gates.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: April 5, 2011
    Assignee: International Business Machines Corporation
    Inventors: Douglas D. Coolbaugh, Ebenezer E. Eshun, Zhong-Xiang He, Robert M. Rassel, Kimball M. Watson
  • Patent number: 7915709
    Abstract: The invention relates to a semiconductor device (10) with a semiconductor body (12) comprising a bipolar transistor with an emitter region, a base region and a collector region (1, 2, 3) of, respectively, a first conductivity type, a second conductivity type opposite to the first conductivity type, and the first conductivity type. One of the emitter or collector regions (1, 3) comprises a nanowire (30). The base region (2) has been formed from a layer (20) at the surface of the semiconductor body (12); the other one (3, 1) of the emitter or collector regions (1, 3) has been formed in the semiconductor body (12) below the base region (2). The emitter or collector region (1, 3) comprising the nanowire (30) has been provided on the surface of the semiconductor body (12) such that its longitudinal axis extends perpendicularly to the surface.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: March 29, 2011
    Assignee: NXP B.V.
    Inventors: Godefridus Adrianus Maria Hurkx, Prabhat Agarwal, Abraham Rudolf Balkenende, Petrus Hubertus Cornelis Magnee, Melanie Maria Hubertina Wagemans, Erik Petrus Antonius Maria Bakkers, Erwin Hijzen
  • Patent number: 7910419
    Abstract: A method for making a transistor with self-aligned gate and ground plane includes forming a stack, on one face of a semi-conductor substrate, the stack including an organometallic layer and a dielectric layer. The method also includes exposing a part of the organometallic layer, a portion of the organometallic layer different to the exposed part being protected from the electron beams by a mask, the shape and the dimensions of a section, in a plane parallel to the face of the substrate, of the gate of the transistor being substantially equal to the shape and to the dimensions of a section of the organometallic portion in said plane. The method also includes removing the exposed part, and forming dielectric portions in empty spaces formed by the removal of the exposed part of the organometallic layer, around the organometallic portion.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: March 22, 2011
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Claire Fenouillet-Beranger, Philippe Coronel
  • Patent number: 7910449
    Abstract: In a semiconductor device according to the present invention, two epitaxial layers are formed on a P type substrate. In the substrate and the epitaxial layers, isolation regions are formed to divide the substrate and the epitaxial layers into a plurality of islands. Each of the isolation regions is formed by connecting first and second P type buried layers with a P type diffusion layer. By disposing the second P type buried layer between the first P type buried layer and the P type diffusion layer, a lateral diffusion width of the first P type buried layer is reduced. By use of this structure, a formation region of the isolation region is reduced in size.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: March 22, 2011
    Assignees: Sanyo Electric Co., Ltd., Sanyo Semiconductor Co., Ltd.
    Inventors: Mitsuru Soma, Hirotsugu Hata, Yoshimasa Amatatsu
  • Publication number: 20110057289
    Abstract: An integrated circuit containing a bipolar transistor including an emitter diffused region with a peak doping density higher than 1·1020 atoms/cm3, and an emitter-base junction less than 40 nanometers deep in a base layer. A process of forming the bipolar transistor, which includes forming an emitter dopant atom layer between a base layer and an emitter layer, followed by a flash or laser anneal step to diffuse dopant atoms from the emitter dopant atom layer into the base layer.
    Type: Application
    Filed: March 5, 2010
    Publication date: March 10, 2011
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Rick L. Wise, Hiroshi Yasuda
  • Publication number: 20110053331
    Abstract: This document discusses, among other things, apparatus having at least one CMOS transistor overlying a substrate; and at least one finned bipolar transistor overlying the substrate and methods for making the apparatus.
    Type: Application
    Filed: November 10, 2010
    Publication date: March 3, 2011
    Inventors: Ronald KAKOSCHKE, Klaus SCHRÜFER
  • Publication number: 20110039391
    Abstract: A bipolar junction transistor may act as a select device for a semiconductor memory. The bipolar junction transistor may be formed of a stack of base and collector layers. Sets of parallel trenches are formed in a first direction down to the base and in a second direction down to the collector. The trenches may be used to form local enhancement implants into the exposed portion of the base and collector in each trench. As a result of the local enhancement implants, in some embodiments, leakage current may be reduced, active current capability may be higher, gain may be higher, base resistance may be reduced, breakdown voltage may be increased, and parasitic effects with adjacent junctions may be reduced.
    Type: Application
    Filed: October 27, 2010
    Publication date: February 17, 2011
    Inventors: Agostino Pirovano, Augusto Benvenuti, Fabio Pellizzer, Giorgio Servalli
  • Publication number: 20110026174
    Abstract: An electrostatic discharge (ESD) protection element is described, the ESD protection element including 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: Application
    Filed: July 31, 2009
    Publication date: February 3, 2011
    Inventors: Wolfgang Klein, Hans Taddiken, Winfried Bakalski
  • Publication number: 20110018608
    Abstract: The present invention provides a bipolar transistor, a method for forming the bipolar transistor, a method for turning on the bipolar transistor, and a band-gap reference circuit, virtual ground reference circuit and double band-gap reference circuit with the bipolar transistor. The bipolar transistor includes: a Silicon-On-Insulator wafer; a base area, an emitter area and a collector area; a base area gate dielectric layer on a top silicon layer and atop the base area; a base area control-gate on the base area gate dielectric layer; an emitter electrode connected to the emitter area via a first contact; a collector electrode connected to the collector area via a second contact; and a base area control-gate electrode connected to the base area control-gate via a third contact.
    Type: Application
    Filed: July 23, 2010
    Publication date: January 27, 2011
    Applicant: Semiconductor Manufacturing International (Shanghai) Corporation
    Inventors: Min-hwa Chi, Lihying Ching, Deyuan Xiao
  • Publication number: 20110012129
    Abstract: A packaged power electronic device includes a wide bandgap bipolar driver transistor having a base, a collector, and an emitter terminal, and a wide bandgap bipolar output transistor having a base, a collector, and an emitter terminal. The collector terminal of the output transistor is coupled to the collector terminal of the driver transistor, and the base terminal of the output transistor is coupled to the emitter terminal of the driver transistor to provide a Darlington pair. An area of the output transistor is at least 3 times greater than an area of the driver transistor in plan view. For example, an area ratio of the output transistor to the driver transistor may be between about 3:1 to about 5:1. Related devices and methods of fabrication are also discussed.
    Type: Application
    Filed: July 15, 2009
    Publication date: January 20, 2011
    Inventors: Qingchun Zhang, Anant K. Agarwal
  • Publication number: 20110006342
    Abstract: An electrostatic discharge (ESD) protection circuit coupled with an input/output (I/O) pad is provided. The ESD protection circuit includes a first field oxide device coupled between a first terminal that is capable of providing a first supply voltage and the I/O pad. The first field oxide device includes a drain end having a first type of dopant and a source end having the first type of dopant. The first field oxide device includes a first doped region having a second type of dopant disposed adjacent to the drain end of the first field oxide device and a second doped region having the second type of dopant disposed adjacent to the source end of the first field oxide device.
    Type: Application
    Filed: April 23, 2010
    Publication date: January 13, 2011
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Shu-Chuan LEE, Kuo-Ji CHEN, Wade MA
  • Publication number: 20100327280
    Abstract: Bipolar transistor structures, methods of designing and fabricating bipolar transistors, methods of designing circuits having bipolar transistors. The method of designing the bipolar transistor includes: selecting an initial design of a bipolar transistor; scaling the initial design of the bipolar transistor to generate a scaled design of the bipolar transistor; determining if stress compensation of the scaled design of the bipolar transistor is required based on dimensions of an emitter of the bipolar transistor after the scaling; and if stress compensation of the scaled design of the bipolar transistor is required then adjusting a layout of a trench isolation layout level of the scaled design relative to a layout of an emitter layout level of the scaled design to generate a stress compensated scaled design of the bipolar transistor.
    Type: Application
    Filed: June 29, 2009
    Publication date: December 30, 2010
    Applicant: International Business Machines Corporation
    Inventors: Alvin Jose Joseph, Ramana Murty Malladi, James Albert Slinkman
  • Publication number: 20100320571
    Abstract: A bipolar transistor structure and a method for fabricating the bipolar transistor structure include: (1) a collector structure located at least in-part within a semiconductor substrate; (2) a base structure contacting the collector structure; and (3) an emitter structure contacting the base structure. The interface of the emitter structure and the base structure includes an oxygen impurity and at least one impurity selected from the group consisting of a fluorine impurity and a carbon impurity, to enhance performance of a bipolar transistor within the bipolar transistor structure. The impurities may be introduced into the interface by plasma etch treatment, or alternatively a thermal treatment followed by an anhydrous ammonia and hydrogen fluoride treatment, of a base material from which is comprised the base structure.
    Type: Application
    Filed: June 22, 2009
    Publication date: December 23, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: John J. Benoit, Mattias E. Dahlstrom, Mark D. Dupuis, Peter B. Gray, Anthony K. Stamper
  • Publication number: 20100289022
    Abstract: The invention relates to a method of manufacturing a semiconductor device (10) with a substrate (11) and a semiconductor body (12) which is provided with at least one bipolar transistor having an emitter region (1), a base region (2) and a collector region (3), wherein in the semiconductor body (12) a first semiconductor region (13) is formed that forms one (3) of the collector and emitter regions (1,3) and on the surface of the semiconductor body (12) a stack of layers is formed comprising a first insulating layer (4), a polycrystalline semiconductor layer (5) and a second insulating layer (6) in which stack an opening (7) is formed, after which by non-selective epitaxial growth a further semiconductor layer (22) is deposited of which a monocrystalline horizontal part on the bottom of the opening (7) forms the base region (2) and of which a polycrystalline vertical part (2A) on a side face of the opening (7) is connected to the polycrystalline semiconductor layer (5), after which spacers (S) are formed paral
    Type: Application
    Filed: October 29, 2006
    Publication date: November 18, 2010
    Applicant: NXP B.V.
    Inventors: Joost Melai, Erwin Hijzen, Philippe Meunier-Beillard, Johannes J.T.M. Donkers
  • Publication number: 20100279482
    Abstract: In a semiconductor device according to the present invention, two epitaxial layers are formed on a P type substrate. In the substrate and the epitaxial layers, isolation regions are formed to divide the substrate and the epitaxial layers into a plurality of islands. Each of the isolation regions is formed by connecting first and second P type buried layers with a P type diffusion layer. By disposing the second P type buried layer between the first P type buried layer and the P type diffusion layer, a lateral diffusion width of the first P type buried layer is reduced. By use of this structure, a formation region of the isolation region is reduced in size.
    Type: Application
    Filed: July 14, 2010
    Publication date: November 4, 2010
    Applicants: Sanyo Electric Co., Ltd., Sanyo Semiconductor Co., Ltd.
    Inventors: Mitsuru Soma, Hirotsugu Hata, Yoshimasa Amatatsu
  • Publication number: 20100279481
    Abstract: An integrated circuit and method of fabricating the integrated circuit is disclosed. The integrated circuit includes vertical bipolar transistors (30, 50, 60), each having a buried collector region (26?). A carbon-bearing diffusion barrier (28c) is disposed over the buried collector region (26?), to inhibit the diffusion of dopant from the buried collector region (26?) into the overlying epitaxial layer (28). The diffusion barrier (28c) may be formed by incorporating a carbon source into the epitaxial formation of the overlying layer (28), or by ion implantation. In the case of ion implantation of carbon or SiGeC, masks (52, 62) may be used to define the locations of the buried collector regions (26?) that are to receive the carbon; for example, portions underlying eventual collector contacts (33, 44c) may be masked from the carbon implant so that dopant from the buried collector region (26?) can diffuse upward to meet the contact (33).
    Type: Application
    Filed: November 30, 2009
    Publication date: November 4, 2010
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jeffrey A. Babcock, Angelo Pinto, Manfred Schiekofer, Scott G. Balster, Gregory E. Howard, Alfred Hausler
  • Publication number: 20100264427
    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: Application
    Filed: July 1, 2010
    Publication date: October 21, 2010
    Applicant: Northrop Grumman Systems Corporation
    Inventor: John V. Veliadis
  • Publication number: 20100258799
    Abstract: A bipolar transistor at least includes a semiconductor substrate including an N? epitaxial growth layer and a P? silicon substrate, an N+ polysilicon layer, a tungsten layer, two silicide layers, a base electrode, an emitter electrode, and a collector electrode. The N+ polysilicon layer formed on the semiconductor substrate is covered with one of the silicide layers. The tungsten layer that is formed on the silicide layer is covered with the other silicide layer.
    Type: Application
    Filed: April 1, 2010
    Publication date: October 14, 2010
    Applicant: NEC Electronics Corporation
    Inventor: Akio Matsuoka
  • Publication number: 20100230821
    Abstract: The invention relates to a method of manufacturing a semiconductor device (10) with a semiconductor body (1) which is provided with at least one semiconductor element, wherein on the surface of the semiconductor body (1) a mesa-shaped semiconductor region (2) is formed, a masking layer (3) is deposited over the mesa-shaped semiconductor region (2), a part (3A) of the masking layer (3) is removed that borders a side surface of the mesa-shaped semiconductor region (2) near its top and an electrically conducting connection region (4) is formed on the resulting structure forming a contact for the mesa-shaped semiconductor region (2). According to the invention after removal of said part (3A) of the masking layer (3) but before formation of the electrically conducting connection region (4) the mesa-shaped semiconductor region (2) is widened by an additional semiconductor region (5) at the side surface of the mesa-shaped semiconductor region (2) freed by removal of said part (3A) of the masking layer (3).
    Type: Application
    Filed: August 13, 2007
    Publication date: September 16, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Vijayaraghavan Madakasira, Lars Magnus Tarle Borgstrom, Erik Petrus Antonius Maria Bakkers, Wilhelmus Theodorus Antonius Johan Van Den Einden, Olaf Wunnicke
  • Patent number: 7791171
    Abstract: In a semiconductor device according to the present invention, two epitaxial layers are formed on a P type substrate. In the substrate and the epitaxial layers, isolation regions are formed to divide the substrate and the epitaxial layers into a plurality of islands. Each of the isolation regions is formed by connecting first and second P type buried layers with a P type diffusion layer. By disposing the second P type buried layer between the first P type buried layer and the P type diffusion layer, a lateral diffusion width of the first P type buried layer is reduced. By use of this structure, a formation region of the isolation region is reduced in size.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: September 7, 2010
    Assignees: Sanyo Electric Co., Ltd., Sanyo Semiconductor Co., Ltd.
    Inventors: Mitsuru Soma, Hirotsugu Hata, Yoshimasa Amatatsu
  • Publication number: 20100213504
    Abstract: A lateral bipolar junction transistor includes an emitter region; a base region surrounding the emitter region; a gate disposed at least over a portion of the base region; and a collector region surrounding the base region; wherein the portion of the base region under the gate does not under go a threshold voltage implant process.
    Type: Application
    Filed: February 20, 2009
    Publication date: August 26, 2010
    Inventors: Ching-Chung Ko, Tung-Hsing Lee
  • Patent number: 7776704
    Abstract: The present invention provides a method of forming a self-aligned heterobipolar transistor (HBT) device in a BiCMOS technology. The method includes forming a raised extrinsic base structure by using an epitaxial growth process in which the growth rate between single crystal silicon and polycrystalline silicon is different and by using a low temperature oxidation process such as a high-pressure oxidation (HIPOX) process to form a self-aligned emitter/extrinsic base HBT structure.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: August 17, 2010
    Assignee: International Business Machines Corporation
    Inventors: James S. Dunn, Alvin J. Joseph, Qizhi Liu
  • Publication number: 20100181649
    Abstract: Memory cells having memory elements self-aligned with the emitters of bipolar junction transistor access devices are described herein, as well as methods for manufacturing such devices. A memory device as described herein comprises a plurality of memory cells. Memory cells in the plurality of memory cells include a bipolar junction transistor comprising an emitter comprising a pillar of doped polysilicon. The memory cells include an insulating element over the emitter and having an opening extending through the insulating layer, the opening centered over the emitter. The memory cells also include a memory element within the opening and electrically coupled to the emitter.
    Type: Application
    Filed: January 22, 2009
    Publication date: July 22, 2010
    Applicants: Macronix International Co., Ltd., International Business Machines Corporation
    Inventors: Hsiang-Lan Lung, Erh-Kun Lai, Chung H. Lam, Bipin Rajendran
  • Patent number: 7754534
    Abstract: A method of manufacturing a semiconductor device using a wiring substrate is provided which can facilitate the handling of the wiring substrate. The method includes the steps of forming a peelable resin layer on a silicon substrate, forming the wiring substrate on the peelable resin layer, mounting semiconductor chips on the wiring substrate, forming semiconductor devices by sealing the plurality of semiconductor chips by a sealing resin, individualizing the semiconductor devices by dicing the semiconductor devices from the sealing resin side but leaving the silicon substrate, peeling each of the individualized semiconductor devices from the silicon substrate between the silicon substrate and the peelable resin layer, and exposing terminals on the wiring substrate by forming openings through the peelable resin layer or by removing the peelable resin layer.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: July 13, 2010
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Nobukatsu Saito, Masaharu Minamizawa, Yoshiyuki Yoneda, Nobutaka Shimizu, Kazuyuki Imamura, Atsushi Kikuchi, Tadahiro Okamoto, Eiji Watanabe
  • Patent number: 7749831
    Abstract: Methods for fabricating CMOS image sensor devices are provided, wherein active pixel sensors are constructed with non-planar transistors having vertical gate electrodes and channels, which minimize the effects of image lag and dark current.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: July 6, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jeong Ho Lyu
  • Publication number: 20100163872
    Abstract: A bipolar junction transistor and a method of manufacturing a bipolar junction transistor are disclosed. An exemplary bipolar junction transistor includes a second conductivity type base region in a first conductivity type substrate, step-shaped recesses in the base region, a polysilicon layer doped with a first conductivity type impurity in the step-shaped recesses, and a step-shaped emitter region between the polysilicon layer and the base region.
    Type: Application
    Filed: December 18, 2009
    Publication date: July 1, 2010
    Inventor: Hyon Chol LIM
  • Publication number: 20100167488
    Abstract: An integrated circuit includes a bipolar transistor comprising a substrate and a collector formed in the substrate. The collector includes a highly doped lateral zone, a very lightly doped central zone and a lightly doped intermediate zone located between the central zone and the lateral zone 4a of the collector. The substrate includes a lightly doped lateral zone and a highly doped central zone. The dopant species in the zone of the substrate are electrically inactive.
    Type: Application
    Filed: March 9, 2010
    Publication date: July 1, 2010
    Applicant: STMICROELECTRONICS SA.
    Inventors: Damien Lenoble, Thierry Schwartzmann, Laurence Boissonnet
  • Publication number: 20100155894
    Abstract: A bipolar junction transistor may act as a select device for a semiconductor memory. The bipolar junction transistor may be formed of a stack of base and collector layers. Sets of parallel trenches are formed in a first direction down to the base and in a second direction down to the collector. The trenches may be used to form local enhancement implants into the exposed portion of the base and collector in each trench. As a result of the local enhancement implants, in some embodiments, leakage current may be reduced, active current capability may be higher, gain may be higher, base resistance may be reduced, breakdown voltage may be increased, and parasitic effects with adjacent junctions may be reduced.
    Type: Application
    Filed: December 22, 2008
    Publication date: June 24, 2010
    Inventors: AGOSTINO PIROVANO, AUGUSTO BENVENUTI, FABIO PELLIZZER, GIORGIO SERVALLI
  • Publication number: 20100155775
    Abstract: A design structure is embodied in a machine readable medium for designing, manufacturing, or testing a design. The design structure includes first and second silicon controlled rectifiers (SCRs) formed in a substrate. Further, the first and the second SCRs each include at least one component commonly shared between the first and the second SCRs.
    Type: Application
    Filed: December 23, 2008
    Publication date: June 24, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Robert J. GAUTHIER, JR., Junjun LI, Ankit SRIVASTAVA
  • Publication number: 20100129975
    Abstract: An improved base for a NPN bipolar transistor. The base region is formed with Boron and Indium dopants for improved beta early voltage product and reduced base resistance.
    Type: Application
    Filed: February 1, 2010
    Publication date: May 27, 2010
    Applicant: INTERSIL AMERICAS INC.
    Inventor: James D. Beasom
  • Publication number: 20100090310
    Abstract: A bipolar transistor includes an isolation layer formed in a bipolar region on a semiconductor substrate, a conductive film formed over an upper portion of the isolation layer, n+ and p+ junction regions formed within the conductive film, a first silicide film formed over portions of an upper boundary of the n+ and p+ junction regions, the first silicide film defining openings over the upper boundary of the n+ and p+ junction regions, a second silicide film formed in the openings defined by the first silicide film over the upper boundary portions of the n+ and p+ junction regions, a plurality of plugs connected to the second silicide film, and a plurality of electrodes connected to each of the plugs.
    Type: Application
    Filed: September 29, 2009
    Publication date: April 15, 2010
    Inventor: DO-HUN KIM
  • Patent number: 7682883
    Abstract: A manufacturing method of a thin film transistor array substrate incorporating the manufacture of a photo-sensor is provided. In the manufacturing method, a photo-sensing dielectric layer is formed between a transparent conductive layer and a metal electrode for detecting ambient light. Since the transparent conductive layer is adopted as an electrode, the ambient light can pass through the transparent conductive layer and get incident light into the photo-sensing dielectric layer. Therefore, the sensing area of the photo-sensor can be enlarged and the photo-sensing efficiency is improved. In addition, the other side of the photo sensitive dielectric layer may be a metal electrode. The metal electrode can block the backlight from getting incident into the photo-sensing dielectric layer and thus reduce the background noise. A manufacturing method of a liquid crystal display panel adopting the aforementioned thin film transistor array substrate is also provided.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: March 23, 2010
    Assignee: Au Optronics Corporation
    Inventors: An-Thung Cho, Chia-Tien Peng, Yuan-Jun Hsu, Ching-Chieh Shih, Chien-Sen Weng, Kun-Chih Lin, Hang-Wei Tseug, Ming-Huang Chuang
  • Patent number: 7682920
    Abstract: A method is described for forming a nonvolatile one-time-programmable memory cell having reduced programming voltage. A contiguous p-i-n diode is paired with a dielectric rupture antifuse formed of a high-dielectric-constant material, having a dielectric constant greater than about 8. In preferred embodiments, the high-dielectric-constant material is formed by atomic layer deposition. The diode is preferably formed of deposited low-defect semiconductor material, crystallized in contact with a silicide. A monolithic three dimensional memory array of such cells can be formed in stacked memory levels above the wafer substrate.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: March 23, 2010
    Assignee: Sandisk 3D LLC
    Inventor: S. Brad Herner
  • Publication number: 20100068863
    Abstract: The invention relates to a method of manufacturing a semiconductor device (10) comprising a substrate (12) and a silicon semiconductor body (11) and comprising a bipolar transistor with an emitter region (1) of a first conductivity type, a base region (2) of a second conductivity type opposite to the first conductivity type, and a collector region (3) of the first conductivity type, on the surface of the semiconductor body (11) in which the collector region (3) is formed at least an epitaxial semiconductor layer (20,21,22) being deposited in which the base region (2) is formed, on top of this an etch stop layer (15) being deposited on which a silicon low-crystalline semiconductor layer (24) is deposited in which a connection zone of the base region (2) is formed and in which at the location of an emitter region (1) to be formed an opening (7) is provided running up to the etch stop layer (15), a portion of the etch stop layer (15) covering the opening (7) being removed by means of etching and also an adjoinin
    Type: Application
    Filed: June 12, 2007
    Publication date: March 18, 2010
    Applicant: NXP B.V.
    Inventor: Erwin Hijzen
  • Publication number: 20100032804
    Abstract: High voltage bipolar transistors built with a BiCMOS process sequence exhibit reduced gain at high current densities due to the Kirk effect. Threshold current density for the onset of the Kirk effect is reduced by the lower doping density required for high voltage operation. The widened base region at high collector current densities due to the Kirk effect extends laterally into a region with a high density of recombination sites, resulting in an increase in base current and drop in the gain. The instant invention provides a bipolar transistor in an IC with an extended unsilicided base extrinsic region in a configuration that does not significantly increase a base-emitter capacitance. Lateral extension of the base extrinsic region may be accomplished using a silicide block layer, or an extended region of the emitter-base dielectric layer. A method of fabricating an IC with the inventive bipolar transistor is also disclosed.
    Type: Application
    Filed: August 6, 2009
    Publication date: February 11, 2010
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Scott Gerard Balster, Hiroshi Yasuda, Philipp Steinmann, Badih El-Kareh
  • Publication number: 20100032766
    Abstract: A process for forming a bipolar junction transistor (BJT) in a semiconductor substrate and a BJT formed according to the process. A buried isolation region is formed underlying BJT structures to isolate the BJT structures from the p-type semi-conductor substrate. To reduce capacitance between a BJT subcollector and the buried isolation region, prior to implanting the subcollector spaced-apart structures are formed on a surface of the substrate. The subcollector is formed by implanting ions through the spaced-apart structures and through a region intermediate the spaced-apart structures. The formed BJT subcollector therefore comprises a body portion and end portions extending therefrom, with the end portions disposed at a shallower depth than the body portion, since the ions implanting the end portions must pass through the spaced-apart structures. The shallower depth of the end portions reduces the capacitance.
    Type: Application
    Filed: June 2, 2006
    Publication date: February 11, 2010
    Applicant: Agere Systems Inc.
    Inventors: Alan Sangone Chen, Mark Victor Dyson, Edward Belden Harris, Daniel Charles Kerr, William John Nagy
  • Publication number: 20100032769
    Abstract: An n-type isolation structure is disclosed which includes an n-type BISO layer in combination with a shallow n-well, in an IC. The n-type BISO layer is formed by implanting n-type dopants into a p-type IC substrate in addition to a conventional n-type buried layer (NBL), prior to growth of a p-type epitaxial layer. The n-type dopants in the BISO implanted layer diffuse upward from the p-type substrate to between one-third and two-thirds of the thickness of the p-type epitaxial layer. The shallow n-type well extends from a top surface of the p-type epitaxial layer to the n-type BISO layer, forming a continuous n-type isolation structure from the top surface of the p-type epitaxial layer to the p-type substrate. The width of the n-type BISO layer may be less than the thickness of the epitaxial layer, and may be used alone or with the NBL to isolate components in the IC.
    Type: Application
    Filed: August 10, 2009
    Publication date: February 11, 2010
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Pinghai Hao, Seetharaman Sridhard, James Robert Todd
  • Publication number: 20100022056
    Abstract: The invention provides for an alternative and less complex method of manufacturing a bipolar transistor comprising a field plate (17) in a trench (7) adjacent to a collector region (21), which field plate (17) employs a reduced surface field (Resurf) effect. The Resurf effect reshapes the electric field distribution in the collector region (21) such that for the same collector-base breakdown voltage the doping concentration of the collector region (21) can effectively be increased resulting in a reduced collector resistance and hence an increased bipolar transistor speed. The method comprises a step of forming a base window (6) in a first base layer (4) thereby exposing a top surface of the collector region (21) and a part of an isolation region (3). The trench (7) is formed by removing the exposed part of the isolation region (3), after which isolation layers (9,10) are formed on the surface of the trench (7).
    Type: Application
    Filed: August 29, 2007
    Publication date: January 28, 2010
    Applicant: NXP, B.V.
    Inventors: Johannes J. T. M. Donkers, Sebastien Nuttinck, Guillaume L. R. Boccardi, Francois Neuilly
  • Publication number: 20100001290
    Abstract: 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: Application
    Filed: June 9, 2006
    Publication date: January 7, 2010
    Applicant: HONDA MOTOR CO., LTD.
    Inventor: Ken-ichi Nonaka
  • Publication number: 20100001319
    Abstract: The invention concerns a heterojunction bipolar transistor comprising a support, and epitaxially grown from said support, at least: one collecting, respectively emitting, layer; at least one base layer; and at least one emitting, respectively collecting, layer. The collecting, respectively emitting, layer comprises: at least one first undercoat contacted with said base layer, substantially of similar composition as said emitting, respectively collecting, layer; and at least one second undercoat on the side opposite said base layer relative to said first undercoat.
    Type: Application
    Filed: July 18, 2006
    Publication date: January 7, 2010
    Inventors: Jean-Luc Pélouard, Melania Lijadi, Christophe Dupuis, Fabrice Pardo, Philippe Bove
  • Publication number: 20090321641
    Abstract: A BJT (bipolar junction transistor)-based uncooled IR sensor and a manufacturing method thereof are provided. The BJT-based uncooled IR sensor includes: a substrate; at least one BJT which is formed to be floated apart from the substrate; and a heat absorption layer which is formed on an upper surface of the at least one BJT, wherein the BJT changes an output value according heat absorbed through the heat absorption layer. Accordingly, it is possible to provide a BJT-based uncooled IR sensor capable of being implemented through a CMOS compatible process and obtaining more excellent temperature change detection characteristics.
    Type: Application
    Filed: April 29, 2008
    Publication date: December 31, 2009
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Kun Sik PARK, Yong Sun YOON, Bo Woo KIM, Jin Yeong KANG, Jong Moon PARK, Seong Wook YOO
  • Patent number: 7638395
    Abstract: A method for fabricating a semiconductor device is provided which has first and second regions, transistors of different conductivity types being formed on parts of a substrate corresponding to the first and second regions. The method includeujs the steps of: (a) forming a first insulating film to cover the parts of the substrate corresponding to the first and second regions; (b) forming a first thin film on the first insulating film, the first thin film having a relatively higher etching rate than the first insulating film in plasma etching using a halogen gas; and (c) removing a part of the first thin film corresponding to the first region by the plasma etching using a mask covering the second region and modifying a part of the first insulating film corresponding to the first region.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: December 29, 2009
    Assignee: Panasonic Corporation
    Inventor: Kenji Tateiwa
  • Patent number: 7638360
    Abstract: A ZnO-based thin film transistor (TFT) is provided herein, as is a method of manufacturing the TFT. The ZnO-based TFT has a channel layer that comprises ZnO and ZnCl, wherein the ZnCl has a higher bonding energy than ZnO with respect to plasma. The ZnCl is formed through the entire channel layer, and specifically is formed in a region near THE surface of the channel layer. Since the ZnCl is strong enough not to be decomposed when exposed to plasma etching gas, an increase in the carrier concentration can be prevented. The distribution of ZnCl in the channel layer, may result from the inclusion of chlorine (Cl) in the plasma gas during the patterning of the channel layer.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: December 29, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myung-kwan Ryu, Jun-seong Kim, Sang-yoon Lee, Euk-che Hwang, Tae-sang Kim, Jang-yeon Kwon, Kyung-bae Park, Kyung-seok Son, Ji-sim Jung
  • Publication number: 20090315145
    Abstract: By providing a novel bipolar device design implementation, a standard CMOS process (105-109) can be used unchanged to fabricate useful bipolar transistors (80) and other bipolar devices having adjustable properties by partially blocking the P or N well doping (25) used for the transistor base (581). This provides a hump-shaped base (583, 584) region with an adjustable base width (79), thereby achieving, for example, higher gain than can be obtained with the unmodified CMOS process (101-104) alone. By further partially blocking the source/drain doping step (107) used to form the emitter (74) of the bipolar transistor (80), the emitter shape and effective base width (79) can be further varied to provide additional control over the bipolar device (80) properties. The embodiments thus include prescribed modifications to the masks (57, 62, 72, 46) associated with the bipolar device (80) that are configured to obtain desired device properties.
    Type: Application
    Filed: June 19, 2008
    Publication date: December 24, 2009
    Applicant: Freescale Semiconductor, Inc.
    Inventors: Xin Lin, Bernhard H. Grote, Hongning Yang, Jiang-Kai Zuo
  • Publication number: 20090309167
    Abstract: Embodiments relate to a bipolar transistor that includes a body region having a fin structure. At least one terminal region may be formed over at least a portion of the body region. The at least one terminal region may be formed as an epitaxially grown region. Embodiments also relate to a vertically integrated electronic device that includes a first terminal region, a second terminal region and a third terminal region. The second terminal region may be arranged over at least a portion of the third terminal region, and at least two of the first, second and third terminal regions may be formed as epitaxially grown regions.
    Type: Application
    Filed: June 12, 2008
    Publication date: December 17, 2009
    Inventors: Christian Russ, Christian Pacha, Snezana Jenei, Klaus Schruefer
  • Publication number: 20090298250
    Abstract: A structure is disclosed including a substrate including an insulator layer on a bulk layer, and a bipolar transistor in a first region of the substrate, the bipolar transistor including at least a portion of an emitter region in the insulator layer. Another disclosed structure includes an inverted bipolar transistor in a first region of a substrate including an insulator layer on a bulk layer, the inverted bipolar transistor including an emitter region, and a back-gated transistor in a second region of the substrate, wherein a back-gate conductor of the back-gated transistor and at least a portion of the emitter region are in the same layer of material. A method of forming the structures including a bipolar transistor and back-gated transistor together is also disclosed.
    Type: Application
    Filed: August 6, 2009
    Publication date: December 3, 2009
    Inventors: Andres Bryant, William F. Clark, JR., Edward J. Nowak
  • Patent number: 7625770
    Abstract: A liquid crystal display and a fabricating method thereof for improving an aperture ratio are disclosed. A liquid crystal display (LCD) according to the present invention includes a gate line, a data line and a common line on the thin film transistor array substrate, the gate line crossing the data line to define a pixel region; a thin film transistor near the crossing of the gate line and the data line; a common electrode connected to the common line in the pixel region; and a pixel electrode connected to the thin film transistor in the pixel area for forming an in-plane electric field in association with the common electrode during an operation of the LCD, wherein an edge of the pixel electrode overlaps the common line with at least one insulating layer therebetween, and an edge of the common electrode overlaps the pixel electrode with said at least one insulating layer therebetween.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: December 1, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Kyu Lee, See Hwa Jeong, Seung Chan Choi
  • Patent number: 7622733
    Abstract: A semiconductor structure includes: a carrier plate; a thermosensitive adhesive coupled to a top surface of the carrier plate, which is removable from the carrier plate at a predetermined, defined temperature at which the thermosensitive adhesive loses its adhesive action; semiconductor chips having active top surfaces and back surfaces, where the active top surfaces include contact surfaces disposed on the thermosensitive adhesive; and a plastic embedding compound on the carrier plate, in which the semiconductor chips are embedded.
    Type: Grant
    Filed: March 12, 2007
    Date of Patent: November 24, 2009
    Assignee: Infineon Technologies AG
    Inventors: Edward Fuergut, Thomas Kalin, Holger Woerner, Carsten Von Koblinski
  • Publication number: 20090267689
    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: April 25, 2008
    Publication date: October 29, 2009
    Applicant: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Dragan Zupac, Brian D. Griesbach, Theresa M. Keller, Joel E. Keys, Sandra J. Wipf, Evan F. Yu