Avalanche Diode (e.g., So-called "zener" Diode Having Breakdown Voltage Greater Than 6 Volts) Patents (Class 257/603)
  • Patent number: 10818593
    Abstract: An electronic device includes: a control terminal, which extends on a first face of a substrate; a first conduction terminal, which extends in the substrate at the first face of the substrate; a first insulating layer interposed between the control terminal and the first conduction terminal; a conductive path, which can be biased at a biasing voltage; and a protection element, coupled to the control terminal and to the conductive path, which forms an electrical connection between the control terminal and the conductive path and is designed to melt, and thus interrupt electrical connection, in the presence of a leakage current higher than a critical threshold between the control terminal and the first conduction terminal through the first insulating layer.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: October 27, 2020
    Assignee: STMICROELECTRONICS S.r.l.
    Inventors: Francesco Patané, Alfio Russo
  • Patent number: 10763760
    Abstract: Provided is a technique for preventing a peak current during recovery while enhancing breakdown voltage. A semiconductor device includes the following: a p?-type anode layer having a uniform p-type impurity concentration; an n?-type layer having a distributed n-type impurity concentration; and an n+-type layer disposed with the n?-type layer interposed between the n+-type layer and the p?-type anode layer, the n+-type layer having an n-type impurity concentration that is higher than that of the n?-type layer and is uniform. The n-type impurity concentration of the n?-type layer in a portion on the p?-type-anode-layer side is lower than the p-type impurity concentration of the p?-type anode layer.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: September 1, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventor: Hidenori Fujii
  • Patent number: 10692822
    Abstract: In some examples, an electrostatic discharge (ESD) device includes a substrate layer, a transition layer positioned on the substrate layer, a plurality of superlattice layers on the transition layer and including at least two doped superlattice layers. The ESD device further includes a plurality of doped contact structures extending from the transition layer to a surface of an outermost layer of the plurality of superlattice layers, where a first of the plurality of doped contact structures comprises an anode and a second of the plurality of doped contact structures comprises a cathode, where the plurality of doped contact structures are to generate a zero capacitance ESD device.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: June 23, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: He Lin
  • Patent number: 9733302
    Abstract: An integrated circuit (IC) having a heat-generating element, such as a power MOSFET, a current-carrying conductor coupled to the heat-generating element, a sense conductor adjacent the current-carrying conductor, and a failure-detection circuit coupled to the sense conductor. When thermal cycling of the IC causes the resistance of the sense conductor to become greater than a temperature-dependent threshold value, the failure-detection circuit generates a signal indicating that the integrated circuit will soon fail. The resistance of the sense conductor is determined by injecting a current into the sense conductor to generate a voltage. The temperature-dependent threshold value is a voltage generated by injecting a current into a reference conductor disposed away from the current-carrying and sense conductors. A voltage comparator compares the two voltages to generate the output.
    Type: Grant
    Filed: September 6, 2015
    Date of Patent: August 15, 2017
    Assignee: NXP USA, INC.
    Inventors: Zhichen Zhang, John M. Pigott, Chuanzheng Wang, Qilin Zhang, Michael J. Zunino
  • Patent number: 9721940
    Abstract: A radiation-emitting semiconductor chip having a semiconductor body including a semi-conductor layer sequence having an active region that generates radiation, a first semiconductor layer of a first conductor, and a second semiconductor layer of a second conductor different from the first conductor, and having a carrier on which the semiconductor body is arranged, wherein a pn junction is formed in the carrier, the carrier has a first contact and a second contact on a rear side facing away from the semiconductor body, and the active area and the pn junction connect to one another in antiparallel in relation to the forward-bias direction by the first contact and the second contact.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: August 1, 2017
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Andreas Plössl, Heribert Zull
  • Patent number: 9666435
    Abstract: A system (10) for delivery of dilute fluid, utilizing an active fluid source (12), a diluent fluid source (14), a fluid flow metering device (24) for dispensing of one of the active and diluent fluids, a mixer (38) arranged to mix the active and diluent fluids to form a diluted active fluid mixture, and a monitor (42) arranged to sense concentration of active fluid and/or diluent fluid in the diluted active fluid mixture, and responsively adjust the fluid flow metering device (24) to achieve a predetermined concentration of active fluid in the diluted active fluid mixture. A pressure controller (34) is arranged to control flow of the other of the active and diluent fluids so as to maintain a predetermined pressure of the diluted active fluid mixture dispensed from the system. The fluid dispensed from the system then can be adjustably controlled by a flow rate controller, e.g., a mass flow controller, to provide a desired flow to a fluid-utilizing unit, such as a semiconductor process tool.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: May 30, 2017
    Assignee: Entegris, Inc.
    Inventors: Jeffrey J. Homan, Jose I. Arno, Joseph D. Sweeney
  • Patent number: 9202935
    Abstract: A semiconductor device such as a Zener diode includes a first semiconductor material of a first conductivity type and a second semiconductor material of a second conductivity type in contact with the first semiconductor material to form a junction therebetween. A first oxide layer is disposed over a portion of the second semiconductor material such that a remaining portion of the second semiconductor material is exposed. A polysilicon layer is disposed on the exposed portion of the second semiconductor material and a portion of the first oxide layer. A first conductive layer is disposed on the polysilicon layer. A second conductive layer is disposed on a surface of the first semiconductor material opposing a surface of the first semiconductor material in contact with the second semiconductor material.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: December 1, 2015
    Assignee: VISHAY GENERAL SEMICONDUCTOR LLC
    Inventors: Shih-Kuan Chen, Wan-Lan Chiang, Ming-Tai Chiang, Chih-Ping Peng, Yih-Yin Lin
  • Patent number: 9160949
    Abstract: A photon detection device includes a photodiode having a planar junction disposed in a first region of semiconductor material. A deep trench isolation (DTI) structure is disposed in the semiconductor material. The DTI structure isolates the first region of the semiconductor material on one side of the DTI structure from a second region of the semiconductor material on an other side of the DTI structure. The DTI structure includes a dielectric layer lining an inside surface of the DTI structure and doped semiconductor material disposed over the dielectric layer inside the DTI structure. The doped semiconductor material disposed inside the DTI structure is coupled to a bias voltage to isolate the photodiode in the first region of the semiconductor material from the second region of the semiconductor material.
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: October 13, 2015
    Assignee: OmniVision Technologies, Inc.
    Inventors: Bowei Zhang, Zhiqiang Lin
  • Patent number: 9129884
    Abstract: A semiconductor device is provided with a wiring substrate including a connection pad, a joining member joined with the connection pad, and a semiconductor chip including a connection terminal electrically connected to the connection pad via the joining member. The joining member consists of a first intermetallic compound layer formed at a boundary between the connection pad and the joining member, a second intermetallic compound layer formed at a boundary between the connection terminal and the joining member, a third intermetallic compound layer composed of an intermetallic compound of Cu6Sn5 or (Cu,Ni)6Sn5 and formed between the first intermetallic compound layer and the second intermetallic compound layer, and discrete metal grains, each being composed of a simple substance of Bi, in the third intermetallic compound layer. Surfaces of each of the metal grains are completely covered by the third intermetallic compound layer so that the metal grains do not form a layer.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: September 8, 2015
    Assignee: Shinko Electric Industries Co., Ltd.
    Inventor: Kei Murayama
  • Patent number: 9099487
    Abstract: Zener diode structures and related fabrication methods and semiconductor devices are provided. An exemplary semiconductor device includes first and second Zener diode structures. The first Zener diode structure includes a first region, a second region that is adjacent to the first region, and a third region adjacent to the first region and the second region to provide a junction that is configured to influence a first reverse breakdown voltage of a junction between the first region and the second region. The second Zener diode structure includes a fourth region, a fifth region that is adjacent to the fourth region, and a sixth region adjacent to the fourth region and the fifth region to provide a junction configured to influence a second reverse breakdown voltage of a junction between the fourth region and the fifth region, wherein the second reverse breakdown voltage and the first reverse breakdown voltage are different.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: August 4, 2015
    Assignee: FREESCALE SEMICONDUCTOR INC.
    Inventors: Weize Chen, Xin Lin, Patrice M. Parris
  • Patent number: 9035434
    Abstract: A semiconductor device having first and second portions with opposite conductivity types. There are first through fourth layers in the semiconductor device. A peak value of the impurity concentration of the fourth layer is higher than the peak value of the impurity concentration of the second layer and lower than the peak value of the impurity concentration of a first portion of the third layer. The fourth layer includes a third portion located on the first portion and a fourth portion which is located on the second portion. The semiconductor device allows a decrease in the forward voltage drop and also allows an improvement of the safe operating area tolerance. Thus, it is possible to decrease the forward voltage drop, improve the maximum reverse voltage, and suppress oscillations at the time of recovery.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: May 19, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventor: Katsumi Nakamura
  • Publication number: 20150091136
    Abstract: A semiconductor device such as a Zener diode includes a first semiconductor material of a first conductivity type and a second semiconductor material of a second conductivity type in contact with the first semiconductor material to form a junction therebetween. A first oxide layer is disposed over a portion of the second semiconductor material such that a remaining portion of the second semiconductor material is exposed. A polysilicon layer is disposed on the exposed portion of the second semiconductor material and a portion of the first oxide layer. A first conductive layer is disposed on the polysilicon layer. A second conductive layer is disposed on a surface of the first semiconductor material opposing a surface of the first semiconductor material in contact with the second semiconductor material.
    Type: Application
    Filed: October 1, 2013
    Publication date: April 2, 2015
    Applicant: Vishay General Semiconductor LLC
    Inventors: Shih-Kuan Chen, Wan-Lan Chiang, Ming-Tai Chiang, Chih-Ping Peng, Yih-Yin Lin
  • Patent number: 8981476
    Abstract: A semiconductor device includes: first and second n-type wells formed in p-type semiconductor substrate, the second n-type well being deeper than the first n-type well; first and second p-type backgate regions formed in the first and second n-type wells; first and second n-type source regions formed in the first and second p-type backgate regions; first and second n-type drain regions formed in the first and second n-type wells, at positions opposed to the first and second n-type source regions, sandwiching the first and the second p-type backgate regions; and field insulation films formed on the substrate, at positions between the first and second p-type backgate regions and the first and second n-type drain regions; whereby first transistor is formed in the first n-type well, and second transistor is formed in the second n-type well with a higher reverse voltage durability than the first transistor.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: March 17, 2015
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Kazuhiko Takada
  • Patent number: 8975661
    Abstract: An asymmetrical bidirectional protection component formed in a semiconductor substrate of a first conductivity type, including: a first implanted area of the first conductivity type; a first epitaxial layer of the second conductivity type on the substrate and the first implanted area; a second epitaxial layer of the second conductivity type on the first epitaxial layer, the second layer having a doping level different from that of the first layer; a second area of the first conductivity type on the outer surface of the epitaxial layer, opposite to the first area; a first metallization covering the entire lower surface of the substrate; and a second metallization covering the second area.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: March 10, 2015
    Assignee: STMicroelectronics (Tours) SAS
    Inventor: Benjamin Morillon
  • Patent number: 8963252
    Abstract: Semiconductor devices and methods of forming the same are provided. The semiconductor device may include a semiconductor element disposed on a substrate and including an insulating layer and a gate electrode, a doped region having a first conductivity-type on the substrate, a conductive interconnection electrically connected to the gate electrode, and a first contact plug having a second conductivity-type and electrically connecting the conductive interconnection and the doped region to each other and constituting a Zener diode by junction with the doped region.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: February 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Moojin Kim, Jeongyun Lee
  • Patent number: 8916902
    Abstract: An improved LED module packaging structure with an IC chip includes a power input end in a packaging groove of a carrier stand connected to a zener diode and a power input port of the IC chip acquiring an operating power from the zener diode, so that the LED module applied to a full-color or self-color illuminant of central control utilizes the zener diode connected to the power input end within the packaging groove of the carrier stand to lower or modulate the voltage of an external power. While the IC chip receives a data signal from the data signal input end, the IC chip receives a matched operating voltage via the zener diode to drive the LED chip to shine, thereby attaining a long transmission of the central control easily.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: December 23, 2014
    Assignee: UBLeds Co., Ltd.
    Inventor: ShouWen Hsue
  • Patent number: 8878343
    Abstract: A field effect semiconductor device includes a semiconductor body having a main horizontal surface and a first semiconductor region of a first conductivity type, a second semiconductor region of a second conductivity type arranged between the first semiconductor region and the main horizontal surface, an insulating layer arranged on the main horizontal surface, and a first metallization arranged on the insulating layer. The first and second semiconductor regions form a pn-junction. The semiconductor body further has a deep trench extending from the main horizontal surface vertically below the pn-junction and including a conductive region insulated from the first semiconductor region and the second semiconductor region, and a narrow trench including a polycrystalline semiconductor region extending from the first metallization, through the insulating layer and at least to the conductive region.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: November 4, 2014
    Assignee: Infineon Technologies Austria AG
    Inventors: Franz Hirler, Anton Mauder, Frank Pfirsch, Hans-Joachim Schulze
  • Patent number: 8836066
    Abstract: An avalanche photodiode includes silicon crystal doped with impurities, where the doping profile of the silicon crystal includes a smoothly arcing donor-acceptor concentration curve decreasing with respect to distance into the interior of the silicon crystal that is interrupted by a narrower peak of increased concentration in the interior of the silicon crystal prior to further decreasing with respect to distance along the smoothly arcing donor-acceptor concentration curve.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: September 16, 2014
    Assignee: Rockwell Collins, Inc.
    Inventors: Robert G. Brown, Steven E. Koenck
  • Patent number: 8829650
    Abstract: A zener diode in a SiGe BiCMOS process is disclosed. An N-type region of the zener diode is formed in an active region and surrounded by an N-deep well. A pseudo buried layer is formed under each of the shallow trench field oxide regions on a corresponding side of the active region, and the N-type region is connected to the pseudo buried layers via the N-deep well. The N-type region has its electrode picked up by deep hole contacts. A P-type region of the zener diode is formed of a P-type ion implanted region in the active region. The P-type region is situated above and in contact with the N-type region, and has a doping concentration greater than that of the N-type region. The P-type region has its electrode picked up by metal contact. A method of fabricating zener diode in a SiGe BiCMOS process is also disclosed.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: September 9, 2014
    Assignee: Shanghai Hua Hong Nec Electronics Co., Ltd.
    Inventors: Donghua Liu, Jun Hu, Wenting Duan, Wensheng Qian, Jing Shi
  • Patent number: 8816466
    Abstract: A protective element for electronics has at least one Schottky diode and at least one Zener diode which are located between a power supply and the electronics, the anode of the Schottky diode being connected to the power supply and the cathode of the Schottky diode being connected to the electronics, and the cathode and the anode of the Zener diode are connected to ground. The Schottky diode is a trench MOS barrier junction diode or trench MOS barrier Schottky (TMBS) diode or a trench junction barrier Schottky (TJBS) diode and includes an integrated semiconductor arrangement, which has at least one trench MOS barrier Schottky diode and a p-doped substrate, which is used as the anode of the Zener diode.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: August 26, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Ning Qu, Alfred Goerlach
  • Patent number: 8791547
    Abstract: The invention relates to an avalanche diode that can be employed as an ESD protection device. An avalanche ignition region is formed at the p-n junction of the diode and includes an enhanced defect concentration level to provide rapid onset of avalanche current. The avalanche ignition region is preferably formed wider than the diode depletion zone, and is preferably created by placement, preferably by ion implantation, of an atomic specie different from that of the principal device structure. The doping concentration of the placed atomic specie should be sufficiently high to ensure substantially immediate onset of avalanche current when the diode breakdown voltage is exceeded. The new atomic specie preferably comprises argon or nitrogen, but other atomic species can be employed. However, other means of increasing a defect concentration level in the diode depletion zone, such as an altered annealing program, are also contemplated.
    Type: Grant
    Filed: January 21, 2008
    Date of Patent: July 29, 2014
    Assignee: Infineon Technologies AG
    Inventors: Jens Schneider, Kai Esmark, Martin Wendel
  • Patent number: 8785971
    Abstract: A transient voltage suppressor without leakage current is disclosed, which comprises a P-substrate. There is an N-type epitaxial layer formed on the P-substrate, and a first N-heavily doped area, a first P-heavily doped area, an electrostatic discharge (ESD) device and at least one deep isolation trench are formed in the N-epitaxial layer. A first N-buried area is formed in the bottom of the N-epitaxial layer to neighbor the P-substrate and located below the first N-heavily doped area and the first P-heavily doped area. The ESD device is coupled to the first N-heavily doped area. The deep isolation trench is not only adjacent to the first N-heavily doped area, but has a depth greater than a depth of the first N-buried area, thereby separating the first N-buried area and the ESD device.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: July 22, 2014
    Assignee: Amazing Microelectronic Corp.
    Inventors: Che-Hao Chuang, Kun-Hsien Lin, Ryan Hsin-Chin Jiang
  • Patent number: 8759935
    Abstract: A power semiconductor device includes an active device region disposed in a semiconductor substrate, an edge termination region disposed in the semiconductor substrate between the active device region and a lateral edge of the semiconductor substrate and a trench disposed in the edge termination region which extends from a first surface of the semiconductor substrate toward a second opposing surface of the semiconductor substrate. The trench has an inner sidewall, an outer sidewall and a bottom. The inner sidewall is spaced further from the lateral edge of the semiconductor substrate than the outer sidewall, and an upper portion of the outer sidewall is doped opposite as the inner sidewall and bottom of the trench to increase the blocking voltage capacity. Other structures can be provided which yield a high blocking voltage capacity such as a second trench or a region of chalcogen dopant atoms disposed in the edge termination region.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: June 24, 2014
    Assignee: Infineon Technologies Austria AG
    Inventor: Gerhard Schmidt
  • Patent number: 8754502
    Abstract: Each light detecting unit includes a semiconductor region that outputs a carrier, and a surface electrode. In a photodiode array, a read wire is positioned between neighboring avalanche photodiodes. When a plane including a surface of the semiconductor region is set as a reference plane, a distance tb from the reference plane to the read wire is larger than a distance to from the reference plane to the surface electrode.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: June 17, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Koei Yamamoto, Terumasa Nagano, Kazuhisa Yamamura, Kenichi Sato, Ryutaro Tsuchiya
  • Patent number: 8742543
    Abstract: The invention is directed to an avalanche photodiode containing a substrate and semiconductor layers with various electro-physical properties having common interfaces both between themselves and with the substrate. The avalanche photodiode may be characterized by the presence in the device of at least one matrix consisting of separate solid-state areas with enhanced conductivity surrounded by semiconductor material with the same type of conductivity. The solid-state areas are located between two additional semiconductor layers, which have higher conductivity in comparison to the semiconductor layers with which they have common interfaces. The solid-state areas are generally made of the same material as the semiconductor layers surrounding them but with conductivity type that is opposite with respect to them. The solid-state areas may be made of a semiconductor with a narrow forbidden zone with respect to the semiconductor layers with which they have common interfaces.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: June 3, 2014
    Inventors: Ziraddin Yagub-Ogly Sadygov, Abdelmounairne Faouzi Zerrouk
  • Patent number: 8729605
    Abstract: Provided is a semiconductor device in which on-resistance is largely reduced. In a region (2a) of an N type epitaxial layer (2) of the semiconductor device 20, each region between neighboring trenches (3) is blocked with a depletion layer (14) formed around a trench (3) so that a current passage (12) is interrupted, while a part of the depletion layer (14) formed around the trench (3) is deleted so that the current passage (12) is opened. In a region (2b), a junction portion (8) between the N type epitaxial layer (2) and a P+ type diffusion region (7) makes a Zener diode (8).
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: May 20, 2014
    Assignee: Rohm Co., Ltd.
    Inventor: Masaru Takaishi
  • Patent number: 8723264
    Abstract: In one embodiment, electrostatic discharge (ESD) devices are disclosed.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: May 13, 2014
    Assignee: Semicondutor Components Industries, LLC
    Inventors: David D. Marreiro, Steven M. Etter, Sudhama C. Shastri
  • Patent number: 8710628
    Abstract: An embodiment of the present memory cell a first layer of a chosen conductivity type, and a second layer which includes ferroelectric semiconductor material of the opposite conductivity type, the layers forming a pn junction. The first layer may be a conjugated semiconductor polymer, or may also be of ferroelectric semiconductor material. The layers are provided between first and electrodes. In another embodiment, a single layer of a composite of conjugated semiconductor polymer and ferroelectric semiconductor material is provided between first and second electrodes. The various embodiments may be part of a memory array.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: April 29, 2014
    Assignee: Spansion LLC
    Inventor: Juri H. Krieger
  • Patent number: 8680619
    Abstract: The present disclosure provides a semiconductor device which includes a semiconductor substrate, a first gate structure disposed over the substrate, the first gate structure including a first gate electrode of a first conductivity type, a second gate structure disposed over the substrate and proximate the first gate structure, the second gate structure including a second gate electrode of a second conductivity type different from the first conductivity type, a first doped region of the first conductivity type disposed in the substrate, the first doped region including a first lightly doped region aligned with a side of the first gate structure, and a second doped region of the second conductivity type disposed in the substrate, the second doped region including a second lightly doped region aligned with a side of the second gate structure.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: March 25, 2014
    Assignee: Taiwan Semiconductor Manufacturing Compnay, Ltd.
    Inventors: Ming Zhu, Lee-Wee Teo, Harry Hak-Lay Chuang
  • Patent number: 8637875
    Abstract: Apparatuses and systems for photon detection can include a first optical sensing structure structured to absorb light at a first optical wavelength; and a second optical sensing structure engaged with the first optical sensing structure to allow optical communication between the first and the second optical sensing structures. The second optical sensing structure can be structured to absorb light at a second optical wavelength longer than the first optical wavelength and to emit light at the first optical wavelength which is absorbed by the first optical sensing structure. Apparatuses and systems can include a bandgap grading region.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: January 28, 2014
    Assignee: The Regents of the University of California
    Inventors: Hod Finkelstein, Sadik C. Esener, Yu-Hwa Lo, Kai Zhao, James Cheng, Sifang You
  • Patent number: 8633512
    Abstract: A circuit is proposed for limiting maximum switching FET drain-source voltage (VDS) of a transformer-coupled push pull power converter with maximum DC supply voltage VIN—MAX. Maximum VDS is accentuated by leakage inductances of the push pull transformer and the power converter circuit traces. The limiting circuit bridges the drains of the switching FETs and it includes two serially connected opposing Zener diodes each having a Zener voltage Vzx. The invention is applicable to both N-channel and P-channel FETs. In a specific embodiment, Vzx is selected to be slightly ?2*VIN—MAX with the maximum VDS clamped to about VIN—MAX+½Vzx. In another embodiment, a proposed power switching device with integrated VDS-clamping includes a switching FET; and a Zener diode having a first terminal and a second terminal, the second terminal of the Zener diode is connected to the drain terminal of the switching FET.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: January 21, 2014
    Assignee: Alpha & Omega Semiconductor, Inc.
    Inventor: Sanjay Havanur
  • Patent number: 8604515
    Abstract: A bidirectional protection component formed in a semiconductor substrate of a first conductivity type including a first implanted area of the first conductivity type, an epitaxial layer of the second conductivity type on the substrate and the first implanted area, a second area of the first conductivity type on the external side of the epitaxial layer, in front of the first area, and implanted with the same dose as the first area, a first metallization covering the entire lower surface of the substrate, and a second metallization covering the second area.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: December 10, 2013
    Assignee: STMicroelectronics (Tours) SAS
    Inventor: Benjamin Morillon
  • Patent number: 8598684
    Abstract: A method of manufacturing a semiconductor device, comprising the steps of preparing a structure including a semiconductor substrate, an element formed therein, a through hole formed to penetrate the semiconductor substrate, and an insulating layer formed on both surface sides of the semiconductor substrate and an inner surface of the through hole, and covering the element, forming a penetrating electrode in the through hole, forming a first barrier metal pattern layer covering the penetrating electrode, forming a contact hole reaching a connection portion of the element in the insulating layer, removing a natural oxide film on the connection portion of the element in the contact hole, and forming a wiring layer connected to the first barrier metal pattern layer and connected to the element through the contact hole.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: December 3, 2013
    Assignee: Shinko Electric Industries Co., Ltd.
    Inventor: Kei Murayama
  • Patent number: 8564099
    Abstract: A semiconductor structure and a method for manufacturing the same are provided. The semiconductor structure comprises a diode. The diode comprises a first doped region, a second doped region and a third doped region. The first doped region and the third doped region have a first conductivity type. The second doped region has a second conductivity type opposite to the first conductivity type. The second doped region and the third doped region are separated from each other by the first doped region. The third doped region has a first portion and a second portion adjacent to each other. The first portion and the second portion are respectively adjacent to and away from the second doped region. A dopant concentration of the first portion is bigger than a dopant concentration of the second portion.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: October 22, 2013
    Assignee: Macronix International Co., Ltd.
    Inventors: Chieh-Chih Chen, Cheng-Chi Lin, Shih-Chin Lien, Shyi-Yuan Wu
  • Patent number: 8536682
    Abstract: A vertical bidirectional protection diode including, on a heavily-doped substrate of a first conductivity type, first, second, and third regions of the first, second, and first conductivity types, these regions all having a doping level greater than from 2 to 5×1019 atoms/cm3 and being laterally delimited by an insulated trench, each of these regions having a thickness smaller than 4 ?m.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: September 17, 2013
    Assignee: STMicroelectronics (Tours) SAS
    Inventor: Benjamin Morillon
  • Patent number: 8531005
    Abstract: Electrostatic discharge (ESD) protection clamps for I/O terminals of integrated circuit (IC) cores comprise a bipolar transistor with an integrated Zener diode coupled between the base and collector of the transistor. Variations in clamp voltage in different parts of the same IC chip or wafer caused by conventional deep implant geometric mask shadowing are avoided by using shallow implants and forming the base coupled anode and collector coupled cathode of the Zener using opposed edges of a single relatively thin mask. The anode and cathode are self-aligned, and the width of the Zener space charge region between them is defined by the opposed edges substantially independent of location and orientation of the ESD clamps on the die or wafer. Because the mask is relatively thin and the anode and cathode implants relatively shallow, mask shadowing is negligible and prior art clamp voltage variations are avoided.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: September 10, 2013
    Assignee: Freescale Semiconductor, Inc.
    Inventors: James D. Whitfield, Changsoo Hong
  • Patent number: 8497167
    Abstract: A high voltage ESD protection diode wherein the p-n junction is defined by a p-well and an n-well and includes a RESURF region, the diode including a field oxide layer formed on top of the p-well and n-well, wherein the parameters of the diode are adjustable by controlling one or more of the junction width, the length of the RESURF region, or the length of the field oxide layer.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: July 30, 2013
    Assignee: National Semiconductor Corporation
    Inventors: Vladislav Vashchenko, Vladimir Kuznetsov, Peter J. Hopper
  • Patent number: 8492866
    Abstract: Disclosed is a Zener diode having a scalable reverse-bias breakdown voltage (Vb) as a function of the position of a cathode contact region relative to the interface between adjacent cathode and anode well regions. Specifically, cathode and anode contact regions are positioned adjacent to corresponding cathode and anode well regions and are further separated by an isolation region. However, while the anode contact region is contained entirely within the anode well region, one end of the cathode contact region extends laterally into the anode well region. The length of this end can be predetermined in order to selectively adjust the Vb of the diode (e.g., increasing the length reduces Vb of the diode and vice versa). Also disclosed are an integrated circuit, incorporating multiple instances of the diode with different reverse-bias breakdown voltages, a method of forming the diode and a design structure for the diode.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: July 23, 2013
    Assignee: International Business Machines Corporation
    Inventors: Frederick G. Anderson, Natalie B. Feilchenfeld, David L. Harmon, Richard A. Phelps, Yun Shi, Michael J. Zierak
  • Publication number: 20130175670
    Abstract: An exemplary embodiment illustrates a zener diode structure, wherein the zener diode structure includes a first-type semiconductor layer, a second-type semiconductor layer, a first electrode, a second electrode, and an insulation layer. The second-type semiconductor layer is disposed in a designated area in the first-type semiconductor layer. The first electrode is disposed on the bottom side of the first-type semiconductor layer. The second electrode is disposed above the first-type and the second-type semiconductor layers in corresponding to the central area of the second-type semiconductor layer. The insulation layer is disposed above the first-type and the second-type semiconductor layers surrounding the second electrode. The disclosed zener structure having the insulation layer can reduce the short circuit issue resulting from overflow of an adhesive material during the zener diode packaging process.
    Type: Application
    Filed: July 6, 2012
    Publication date: July 11, 2013
    Applicant: LEXTAR ELECTRONICS CORP.
    Inventor: FU-SIN CHEN
  • Patent number: 8471293
    Abstract: An embodiment of an array of Geiger-mode avalanche photodiodes, wherein each photodiode is formed by a body of semiconductor material, having a first conductivity type, housing a first cathode region, of the second conductivity type, and facing a surface of the body, an anode region, having the first conductivity type and a higher doping level than the body, extending inside the body, and facing the surface laterally to the first cathode region and at a distance therefrom, and an insulation region extending through the body and insulating an active area from the rest of the body, the active area housing the first cathode region and the anode region. The insulation region is formed by a mirror region of metal material, a channel-stopper region having the second conductivity type, surrounding the mirror region, and a coating region, of dielectric material, arranged between the mirror region and the channel-stopper region.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: June 25, 2013
    Assignee: STMicroelectronics S.r.l.
    Inventors: Delfo Nunziato Sanfilippo, Emilio Antonio Sciacca, Piero Giorgio Fallica, Salvatore Antonio Lombardo
  • Patent number: 8461010
    Abstract: In conventional processes, a recombination rate of minority carrier accumulated between a diffusion layer of an anode and a diffusion layer of a cathode cannot be enhanced. An interlayer insulating film 20 is formed on a semiconductor substrate 10. An opening 22 (first opening), an opening 24 (second opening) and an opening 26 are formed in the interlayer insulating film 20. The opening 22 and the opening 26 are formed above respective the p-type diffusion layer 16 and the n-type diffusion layer 18. The opening 24 is formed above the gap region that is a region between the p-type diffusion layer 16 and the n-type diffusion layer 18. A contact plug 32, a contact plug 34 and a contact plug 36 are embedded in the opening 22, the opening 24 and the opening 26 respectively. Both regions of the semiconductor substrate 10 located under the opening 22 among and located under the opening 24 are doped with an impurity.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: June 11, 2013
    Assignee: Renesas Electronics Corporation
    Inventor: Masaharu Sato
  • Patent number: 8445992
    Abstract: A lateral avalanche photodiode structure including a substrate, a PN diode and a metal layer is provided. The substrate has at least one first electrode area, at least one light receiving area, and at least one second electrode area which are arranged horizontally. The first electrode area is also an avalanche area, and the light receiving area is between the first electrode area and the second electrode area. The PN diode is disposed in the substrate in the first electrode area. The metal layer is disposed on the substrate and covers the first electrode area and the second electrode area, but does not cover the light receiving area.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: May 21, 2013
    Assignee: National Central University
    Inventors: Yue-Ming Hsin, Fang-Ping Chou, Zi-Ying Li, Ching-Wen Wang
  • Patent number: 8441032
    Abstract: A system and method providing for the detection of an input signal, either optical or electrical, by using a single independent discrete amplifier or by distributing the input signal into independent signal components that are independently amplified. The input signal can either be the result of photoabsorption process in the wavelengths greater than 950 nm or a low-level electrical signal. The discrete amplifier is an avalanche amplifier operable in a non-gated mode while biased in or above the breakdown region, and includes a composite dielectric feedback layer monolithically integrated with input signal detection and amplification semiconductor layers.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: May 14, 2013
    Assignee: Amplification Technologies, Inc.
    Inventor: Krishna Linga
  • Patent number: 8368145
    Abstract: A semiconductor device has a structure including the first semiconductor region 103 which is provided in the first terminal portion 100 and includes the first n-type impurity region 106, the first resistance region 107 provided at an inner periphery portion of the first n-type impurity region 106 in a plane view, and the first p-type impurity region 108 provided at an inner periphery portion of the first resistance region 107 in the plane view, and the second semiconductor region 104 which is provided in the second terminal portion 101 and includes the second p-type impurity region 109, the second resistance region 110 provided at an inner periphery portion of the second p-type impurity region 109 in the plane view, and the second n-type impurity region 111 provided at an inner periphery portion of the second resistance region 110 in the plane view.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: February 5, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Osamu Fukuoka, Masahiko Hayakawa, Hideaki Shishido
  • Publication number: 20130026604
    Abstract: A lateral avalanche photodiode structure including a substrate, a PN diode and a metal layer is provided. The substrate has at least one first electrode area, at least one light receiving area, and at least one second electrode area which are arranged horizontally. The first electrode area is also an avalanche area, and the light receiving area is between the first electrode area and the second electrode area. The PN diode is disposed in the substrate in the first electrode area. The metal layer is disposed on the substrate and covers the first electrode area and the second electrode area, but does not cover the light receiving area.
    Type: Application
    Filed: September 22, 2011
    Publication date: January 31, 2013
    Applicant: NATIONAL CENTRAL UNIVERSITY
    Inventors: Yue-Ming Hsin, Fang-Ping Chou, Zi-Ying Li, Ching-Wen Wang
  • Publication number: 20130020680
    Abstract: A semiconductor structure and a method for manufacturing the same are provided. The semiconductor structure comprises a diode. The diode comprises a first doped region, a second doped region and a third doped region. The first doped region and the third doped region have a first conductivity type. The second doped region has a second conductivity type opposite to the first conductivity type. The second doped region and the third doped region are separated from each other by the first doped region. The third doped region has a first portion and a second portion adjacent to each other. The first portion and the second portion are respectively adjacent to and away from the second doped region. A dopant concentration of the first portion is bigger than a dopant concentration of the second portion.
    Type: Application
    Filed: July 19, 2011
    Publication date: January 24, 2013
    Applicant: MACRONIX INTERNATIONAL CO., LTD.
    Inventors: Chieh-Chih Chen, Cheng-Chi Lin, Shih-Chin Lien, Shyi-Yuan Wu
  • Patent number: 8309422
    Abstract: In one embodiment, an ESD device is configured to include a zener diode and a P-N diode and to have a conductor that provides a current path between the zener diode and the P-N diode.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: November 13, 2012
    Assignee: Semiconductor Components Industries, LLC
    Inventors: David D. Marreiro, Sudhama C. Shastri, Ali Salih, Mingjiao Liu, John Michael Parsey, Jr.
  • Patent number: 8288839
    Abstract: A vertical transient voltage suppressing (TVS) device includes a semiconductor substrate of a first conductivity type where the substrate is heavily doped, an epitaxial layer of the first conductivity type formed on the substrate where the epitaxial layer has a first thickness, and a base region of a second conductivity type formed in the epitaxial layer where the base region is positioned in a middle region of the epitaxial layer. The base region and the epitaxial layer provide a substantially symmetrical vertical doping profile on both sides of the base region. In one embodiment, the base region is formed by high energy implantation. In another embodiment, the base region is formed as a buried layer. The doping concentrations of the epitaxial layer and the base region are selected to configure the TVS device as a punchthrough diode based TVS or an avalanche mode TVS.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: October 16, 2012
    Assignee: Alpha & Omega Semiconductor, Inc.
    Inventors: Lingpeng Guan, Madhur Bobde, Anup Bhalla
  • Publication number: 20120223416
    Abstract: A thin-film semiconductor component includes a carrier and a semiconductor body with a semiconductor layer sequence including an active region provided to generate radiation. The semiconductor body is externally electrically contactable by a first contact and a second contact. The carrier includes a protection diode structure connected electrically in parallel to the semiconductor body. The protection diode structure includes a first diode and a second diode. The first diode and the second diode are electrically connected in series in mutually opposing directions with regard to their forward direction.
    Type: Application
    Filed: November 11, 2010
    Publication date: September 6, 2012
    Applicant: OSRAM Opto Semiconductors GmbH
    Inventors: Manfred Scheubeck, Siegfried Herrmann
  • Publication number: 20120211747
    Abstract: A PN junction includes first and second areas of silicon, wherein one of the first and second areas is n-type silicon and the other of the first and second areas is p-type silicon. The first area has one or more projections which at least partially overlap with the second area, so as to form at least one cross-over point, the cross-over point being a point at which an edge of the first area crosses over an edge of the second area.
    Type: Application
    Filed: August 28, 2009
    Publication date: August 23, 2012
    Applicant: X-FAB SEMICONDUCTOR FOUNDRIES AG
    Inventors: Paul Ronald Stribley, Soon Tat Kong