Complementary Transistors In Wells Of Opposite Conductivity Types More Heavily Doped Than The Substrate Region In Which They Are Formed, E.g., Twin Wells Patents (Class 257/371)
  • Patent number: 9698047
    Abstract: Semiconductor devices and method of manufacturing such semiconductor devices are provided for improved FinFET memory cells to avoid electric short often happened between metal contacts of a bit cell, where the meal contacts are positioned next to a dummy gate of a neighboring dummy edge cell. In one embodiment, during the patterning of a gate layer on a substrate surface, an improved gate slot pattern is used to extend the lengths of one or more gate slots adjacent bit lines so as to pattern and sectionalize a dummy gate line disposed next to metal contacts of an active memory cell. In another embodiment, during the patterning of gate lines, the distances between one or more dummy gates lines disposed adjacent an active memory cell are adjusted such that their locations within dummy edge cells are shifted in position to be away from metal contacts of the active memory cell.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: July 4, 2017
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Ching-Wen Hung, Chih-Sen Huang, Shih-Fang Tzou, Yi-Wei Chen, Yung-Feng Cheng, Li-Ping Huang, Chun-Hsien Huang, Chia-Wei Huang, Yu-Tse Kuo
  • Patent number: 9698786
    Abstract: Aspects of the present disclosure are directed to detecting and powering external circuits via a common port. As may be implemented in accordance with one or more embodiments, an accessory detection circuit detects a type of an external circuit based upon a pull-down resistance at an interface port (e.g., where each accessory type provides a discernable pull-down resistance). Power switching circuitry couples power between the interface port and an internal power-based circuit, and operates in an open condition when the accessory detection circuit is active. An adaptive biasing circuit sets a voltage across the power switching circuitry to about zero, based on a voltage level provided on the interface port, thereby mitigating changes in the pull-down resistance due to current leakage. Once the type of external circuit is identified, the power switching circuitry couples power between the external circuit and the internal circuit.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: July 4, 2017
    Assignee: Nexperia B.V.
    Inventors: Madan Mohan Reddy Vemula, Harold Hanson
  • Patent number: 9601212
    Abstract: A storage device and an information processing method are provided. The storage device has a first power supply unit and at least one first storage cell. The at least one first storage cell stores first data which are associated with a number of charges within the first storage cell. The first power supply unit is electrically connected to the at least one first storage cell. The storage device further has a first control unit configured for controlling the first power supply unit to supply power to the at least one first storage cell according to a predetermined policy, so that the number of charges within the first storage cell satisfies a first preset condition.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: March 21, 2017
    Assignees: BEIJING LENOVO SOFTWARE LTD., LENOVO (BEIJING) LIMITED
    Inventors: Honglei Zhang, Xiaohui Xie, Zhigang Li
  • Patent number: 9553091
    Abstract: A semiconductor structure is provided, which includes a first high-voltage MOS device region having a first well and a first light-doping region in a part of the first well, wherein the conductive type of the first well and the conductive type of the first light-doping region are opposite. The first high-voltage MOS device region also includes a first gate stack on a part of the first well and a part of the first light-doping region, and first heavy-doping regions in the first well and the first light-doping region at two sides of the gate stack, wherein the conductive type of the first heavy-doping region and the conductive type of the first well are the same. The first light-doping region between the first well and the first heavy-doping regions is a channel region of the first high-voltage MOS device region.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: January 24, 2017
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Manoj Kumar, Chia-Hao Lee, Chih-Cherng Liao, Ching-Yi Hsu, Jun-Wei Chen
  • Patent number: 9515163
    Abstract: One method disclosed herein includes removing a sacrificial gate structure and forming a replacement gate structure in its place, after forming the replacement gate structure, forming a metal silicide layer on an entire upper surface area of each of a plurality of source/drain regions and, with the replacement gate structure in position, forming at least one source/drain contact structure for each of the plurality of source/drain regions, wherein the at least one source/drain contact structure is conductively coupled to a portion of the metal silicide layer and a dimension of the at least one source/drain contact structure in a gate width direction of the transistor is less than a dimension of the source/drain region in the gate width direction.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: December 6, 2016
    Assignees: GLOBALFOUNDRIES Inc., International Business Machines Corporation
    Inventors: Ruilong Xie, Shom Ponoth, Balasubramanian Pranatharthiharan
  • Patent number: 9502530
    Abstract: A method of manufacturing a semiconductor device including the steps of providing a substrate having first type semiconductor regions and second type semiconductor regions, forming a conformal first epitaxy mask layer on the substrate, forming first type epitaxial layer in the substrate of the first type semiconductor regions, forming a conformal second epitaxy mask layer on the substrate, forming second type epitaxial layer in the substrate of the second type semiconductor regions, and removing the second epitaxy mask layer.
    Type: Grant
    Filed: November 8, 2015
    Date of Patent: November 22, 2016
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Yu-Hsiang Hung, Chung-Fu Chang, Chia-Jong Liu, Yen-Liang Wu, Pei-Yu Chou, Home-Been Cheng
  • Patent number: 9502419
    Abstract: A FinFET device comprises a well over a substrate, an isolation region over the well and a fin line over the well and surrounded by the isolation region, wherein the fin line is wrapped by a first gate electrode structure to form a first transistor and an end of the fin line is of a tapered shape.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: November 22, 2016
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventor: Jhon-Jhy Liaw
  • Patent number: 9484422
    Abstract: The present invention provides a high-voltage metal-oxide-semiconductor (HVMOS) transistor comprising a substrate, a gate dielectric layer, a gate electrode and a source and drain region. The gate dielectric layer is disposed on the substrate and includes a protruded portion and a recessed portion, wherein the protruded portion is disposed adjacent to two sides of the recessed portion and has a thickness greater than a thickness of the recessed portion. The gate electrode is disposed on the gate dielectric layer. Thus, the protruded portion of the gate dielectric layer can maintain a higher breakdown voltage, thereby keeping the current from leaking through the gate.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: November 1, 2016
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Kun-Huang Yu, Shih-Yin Hsiao, Wen-Fang Lee, Shu-Wen Lin, Kuan-Chuan Chen
  • Patent number: 9484255
    Abstract: An electrical device including a first semiconductor device having a silicon and germanium containing source and drain region, and a second semiconductor device having a silicon containing source and drain region. A first device contact to at least one of said silicon and germanium containing source and drain region of the first semiconductor device including a metal liner of an aluminum titanium and silicon alloy and a first tungsten fill. A second device contact is in contact with at least one of the silicon containing source and drain region of the second semiconductor device including a material stack of a titanium oxide layer and a titanium layer. The second device contact may further include a second tungsten fill.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: November 1, 2016
    Assignees: INTERNATIONAL BUSINESS MACHINES CORPORATION, GLOBALFOUNDRIES INC.
    Inventors: Hiroaki Niimi, Shariq Siddiqui, Tenko Yamashita
  • Patent number: 9455195
    Abstract: A performance optimized CMOS FET structure and methods of manufacture are disclosed. The method includes forming source and drain regions for a first type device and a second type device. The method further includes lowering the source and drain regions for the first type device, while protecting the source and drain regions for the second type device. The method further includes performing silicide processes to form silicide regions on the lowered source and drain regions for the first type device and the source and drain regions for the second type device.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: September 27, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Paul Chang, Katsunori Onishi, Jian Yu
  • Patent number: 9431251
    Abstract: A method of forming a semiconductor device includes patterning a first mask over a substrate defining a first opening. The substrate includes a first dopant type. The method includes implanting ions having a second dopant type through the first opening to form a first deep well. The method includes patterning a second mask over the substrate defining a second opening. The method includes implanting ions having the second dopant type through the second opening to form a second deep well, wherein an energy for implanting ions to form the second deep well is lower than an energy for implanting ions to form the first deep well. The method includes implanting ions having the first dopant type into the substrate to form a first well, wherein the energy for implanting ions to form the second deep well is greater than an energy for implanting ions to form the first well.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: August 30, 2016
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Hua-Chou Tseng, Chien-Chih Ho
  • Patent number: 9424923
    Abstract: A semiconductor storage device with a novel structure, which can retain stored data even when power is not supplied (i.e., is non-volatile) and has no limitation on the number of write cycles. The semiconductor storage device includes a memory cell array in which a plurality of memory cells are arranged in matrix, a decoder configured to select a memory cell to operate among the plurality of memory cells in accordance with a control signal, and a control circuit configured to select whether to output the control signal to the decoder. In each of the plurality of memory cells, data is held by turning off a selection transistor whose channel region is formed with an oxide semiconductor.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: August 23, 2016
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shuhei Nagatsuka, Yasuyuki Takahashi
  • Patent number: 9406601
    Abstract: Body-bias voltage routing structures. In an embodiment, doped well structures distribute body biasing voltages to a plurality of body biasing wells of an integrated circuit.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: August 2, 2016
    Inventors: Robert P. Masleid, James B. Burr, Michael Pelham
  • Patent number: 9384962
    Abstract: A method of manufacturing a metal gate is provided. The method includes providing a substrate. Then, a gate dielectric layer is formed on the substrate. A multi-layered stack structure having a work function metal layer is formed on the gate dielectric layer. An O2 ambience treatment is performed on at least one layer of the multi-layered stack structure. A conductive layer is formed on the multi-layered stack structure.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: July 5, 2016
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Guang-Yaw Hwang, Chun-Hsien Lin, Hung-Ling Shih, Jiunn-Hsiung Liao, Zhi-Cheng Lee, Shao-Hua Hsu, Yi-Wen Chen, Cheng-Guo Chen, Jung-Tsung Tseng, Chien-Ting Lin, Tong-Jyun Huang, Jie-Ning Yang, Tsung-Lung Tsai, Po-Jui Liao, Chien-Ming Lai, Ying-Tsung Chen, Cheng-Yu Ma, Wen-Han Hung, Che-Hua Hsu
  • Patent number: 9379058
    Abstract: A semiconductor device includes a gate and a first active contact adjacent to the gate. Such a device further includes a first stacked contact electrically coupled to the first active contact, including a first isolation layer on sidewalls electrically isolating the first stacked contact from the gate. The device also includes a first via electrically coupled to the gate and landing on the first stacked contact. The first via electrically couples the first stacked contact and the first active contact to the gate to ground the gate.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: June 28, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Stanley Seungchul Song, Zhongze Wang, Ohsang Kwon, Kern Rim, John Jianhong Zhu, Xiangdong Chen, Foua Vang, Raymond George Stephany, Choh Fei Yeap
  • Patent number: 9362309
    Abstract: An improved finFET and method of fabrication is disclosed. Embodiments of the present invention take advantage of the different epitaxial growth rates of {110} and {100} silicon. Fins are formed that have {110} silicon on the fin tops and {100} silicon on the long fin sides (sidewalls). The lateral epitaxial growth rate is faster than the vertical epitaxial growth rate. The resulting merged fins have a reduced merged region in the vertical dimension, which reduces parasitic capacitance. Other fins are formed with {110} silicon on the fin tops and also {110} silicon on the long fin sides. These fins have a slower epitaxial growth rate than the {100} side fins, and remain unmerged in a semiconductor integrated circuit, such as an SRAM circuit.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: June 7, 2016
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Thomas N. Adam, Kangguo Cheng, Ali Khakifirooz, Alexander Reznicek
  • Patent number: 9349823
    Abstract: Methods of scaling thickness of a gate dielectric structure that overlies a semiconductor substrate, methods of forming an integrated circuit, and integrated circuits are provided. A method of scaling thickness of a gate dielectric structure that overlies a semiconductor substrate includes providing the semiconductor substrate. An interfacial oxide layer is formed in or on the semiconductor substrate. A high-k dielectric layer is formed over the interfacial oxide layer. An oxygen reservoir is formed over at least a portion of the high-k dielectric layer. A sealant layer is formed over the oxygen reservoir. The semiconductor substrate including the oxygen reservoir disposed thereon is annealed to diffuse oxygen through the high-k dielectric layer and the interfacial oxide layer from the oxygen reservoir.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: May 24, 2016
    Assignee: GLOBALFOUNDRIES, INC.
    Inventor: Kisik Choi
  • Patent number: 9349652
    Abstract: A method for fabricating a semiconductor device includes forming a first gate stack over a first fin feature and second gate stack over a second fin feature, removing the first gate stack to form a first gate trench that exposes the first fin structure, removing the second gate stack to form a second gate trench that exposes the second fin feature, performing an annealing process to change a composition of a portion of the first fin feature and forming a first high-k/metal gate (HK/MG) within the first gate trench over the portion of the first fin feature and a second HK/MG within the second gate trench over the second fin feature. Therefore the first HK/MG is formed with a first threshold voltage and the second HK/MG is formed with a second threshold voltage, which is different than the first threshold voltage.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: May 24, 2016
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chia-Cheng Ho, Cheng-Yi Peng, Chih Chieh Yeh, Tsung-Lin Lee, Jung-Piao Chiu
  • Patent number: 9293478
    Abstract: A method of fabrication an array substrate includes forming an oxide semiconductor layer on a substrate; sequentially forming a gate insulating layer and a gate electrode corresponding to a central portion of the oxide semiconductor layer; forming source and drain areas having conductive properties in the oxide semiconductor layer by performing hydrogen plasma treatment; forming barrier layers on the source and drain areas, the barrier layer having a first thickness; forming an inter insulating layer on the gate electrode and having first contact holes that expose the barrier layers; and forming source and drain electrodes on the inter insulating layer and contacting the barrier layers through the first contact holes, respectively.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: March 22, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hee-Jung Yang, Hyung-Tae Kim, Jae-Young Jeong, Gyu-Won Han, Dong-Sun Kim, Won-Joon Ho
  • Patent number: 9230963
    Abstract: A method for fabricating a semiconductor device includes forming a gate dielectric layer over a substrate; forming a metal containing layer, containing an effective work function adjust species, over the gate dielectric layer; forming an anti-reaction layer over the metal containing layer; increasing an amount of the effective work function adjust species contained in the metal containing layer; and forming, on the substrate, a gate stack by etching the anti-reaction layer, the metal containing layer, and the gate dielectric layer.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: January 5, 2016
    Assignee: SK Hynix Inc.
    Inventors: Yun-Hyuck Ji, Se-Aug Jang, Seung-Mi Lee, Hyung-Chul Kim
  • Patent number: 9202879
    Abstract: In a replacement gate scheme, after formation of a gate dielectric layer, a work function material layer completely fills a narrow gate trench, while not filling a wide gate trench. A dielectric material layer is deposited and planarized over the work function material layer, and is subsequently recessed to form a dielectric material portion overlying a horizontal portion of the work function material layer within the wide gate trench. The work function material layer is recessed employing the dielectric material portion as a part of an etch mask to form work function material portions. A conductive material is deposited and planarized to form gate conductor portions, and a dielectric material is deposited and planarized to form gate cap dielectrics.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: December 1, 2015
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Charles W. Koburger, III, Marc A. Bergendahl, David V. Horak, Shom Ponoth, Chih-Chao Yang
  • Patent number: 9147677
    Abstract: Dual-tub junction-isolated voltage clamp devices and methods of forming the same are provided herein. The voltage clamp device can provide junction-isolated protection to low voltage circuitry connected between first and second high voltage interface pins. In certain implementations, a voltage clamp device includes a PNPN protection structure disposed in a p-well, a PN diode protection structure disposed in an n-well positioned adjacent the p-well, a p-type tub surrounding the p-well and the n-well, and an n-type tub surrounding the p-type tub. The p-type tub and the n-type tub provide junction isolation, the p-type tub can be electrically floating, and the n-type tub can be electrically connected to the second pin. The first and second pins can operate at a voltage difference below the junction isolation breakdown, and the second pin can operate with higher voltage than the first pin.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: September 29, 2015
    Assignee: ANALOG DEVICES GLOBAL
    Inventors: Javier Alejandro Salcedo, David J Clarke, Jonathan Glen Pfeifer
  • Patent number: 9147695
    Abstract: An integrated cell may include an nMOS transistor, and an pMOS transistor. The cell may be produced in fully depleted silicon-on-insulator technology, and it is possible for the substrates of the transistors of the cell to be biased with the same adjustable biasing voltage.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: September 29, 2015
    Assignee: STMICROELECTRONICS SA
    Inventors: Frédéric Hasbani, Eric Remond
  • Patent number: 9123427
    Abstract: A semiconductor integrated circuit comprising a first circuit area for a low voltage operation and a second circuit area for a high voltage operation. The circuit areas comprise two vertically stacked backend patterned metal layers that are separated by an inter-metallic dielectric (IMD). The two metal layers and the IMD form a combination that is operable at the low voltage. The first circuit area uses a first portion of the combination for operating at the low voltage and the second circuit area uses a second portion of the combination for routing at the high voltage, the two metal layers in the second portion being interconnected through the IMD by via hole, for withstanding the high voltage. The first portion may comprise an array of magnetic random access memory (MRAM) devices and the second circuit area may comprise a display drive circuit.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: September 1, 2015
    Assignee: III HOLDINGS 1, LLC
    Inventor: Krishnakumar Mani
  • Patent number: 9076863
    Abstract: The density of a transistor array is increased by forming one or more deep trench isolation structures in a semiconductor material. The deep trench isolation structures laterally surround the transistors in the array. The deep trench isolation structures limit the lateral diffusion of dopants and the lateral movement of charge carriers.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: July 7, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Takehito Tamura, Binghua Hu, Sameer Pendharkar, Guru Mathur
  • Publication number: 20150145058
    Abstract: A method of fabricating a CMOS integrated circuit (IC) includes implanting a first n-type dopant at a first masking level that exposes a p-region of a substrate surface having a first gate stack thereon to form NLDD regions for forming n-source/drain extension regions for at least a portion of a plurality of n-channel MOS (NMOS) transistors on the IC. A p-type dopant is implanted at a second masking level that exposes an n-region in the substrate surface having a second gate stack thereon to form PLDD regions for at least a portion of a plurality of p-channel MOS (PMOS) transistors on the IC. A second n-type dopant is retrograde implanted including through the first gate stack to form a deep nwell (DNwell) for the portion of NMOS transistors. A depth of the DNwell is shallower below the first gate stack as compared to under the NLDD regions.
    Type: Application
    Filed: February 5, 2015
    Publication date: May 28, 2015
    Inventor: Mahalingam Nandakumar
  • Patent number: 9013915
    Abstract: In an n-channel HK/MG transistor including: a gate insulating film made of a first high dielectric film containing La and Hf; and a gate electrode which is formed of a stacked film of a metal film and a polycrystalline Si film and which is formed in an active region in a main surface of a semiconductor substrate and surrounded by an element separation portion formed of an insulating film containing oxygen atoms, a second high dielectric film which contains Hf but whose La content is smaller than a La content of the first high dielectric film is formed below the gate electrode which rides on the element separation portion, instead of the first high dielectric film.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: April 21, 2015
    Assignee: Renesas Electronics Corporation
    Inventor: Hirofumi Tokita
  • Publication number: 20150102421
    Abstract: A semiconductor device having an SRAM which includes: a monolithic first active region in which a first transistor and a fifth transistor are disposed; a second active region separated from the first active region, in which a second transistor is disposed; a monolithic third active region in which a third transistor and a sixth transistor are disposed; and a fourth active region separated from the third active region, in which a fourth transistor is disposed. Each driver transistor is divided into a first transistor and a second transistor (or a third transistor and a fourth transistor) and these driver transistors are disposed over different active regions.
    Type: Application
    Filed: December 22, 2014
    Publication date: April 16, 2015
    Inventors: Masao Morimoto, Noriaki Maeda, Yasuhisa Shimazaki
  • Publication number: 20150102420
    Abstract: A well potential supply region is provided in an N-type well region of a cell array. Adjacent gates disposed in both sides of the well potential supply region in the horizontal direction and adjacent gates disposed in further both sides thereof are disposed at the same pitch. In addition, an adjacent cell array includes four gates each of which is opposed to the adjacent gates in the vertical direction. In other words, regularity in the shape of the gate patterns in the periphery of the well potential supply region is maintained.
    Type: Application
    Filed: December 18, 2014
    Publication date: April 16, 2015
    Inventors: Masaki TAMARU, Kazuyuki NAKANISHI, Hidetoshi NISHIMURA
  • Patent number: 9006863
    Abstract: A diode string voltage adapter includes diodes formed in a substrate of a first conductive type. Each diode includes a deep well region of a second conductive type formed in the substrate. A first well region of the first conductive type formed on the deep well region. A first heavily doped region of the first conductive type formed on the first well region. A second heavily doped region of the second conductive type formed on the first well region. The diodes are serially coupled to each other. A first heavily doped region of a beginning diode is coupled to a first voltage. A second heavily doped region of each diode is coupled to a first heavily doped region of a next diode. A second heavily doped region of an ending diode provides a second voltage. The deep well region is configured to be electrically floated.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: April 14, 2015
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chung-Peng Hsieh, Jaw-Juinn Horng
  • Patent number: 9000524
    Abstract: An apparatus comprises two n-type metal oxide semiconductor (MOS) devices formed next to each other. Each n-type MOS device further includes a pair of face-to-face diodes formed in an isolation ring. A method of modeling the apparatus comprises reusing four-terminal MOS device models in standard cell libraries and combining the four-terminal MOS device model and the isolation ring model into a 4T MOS plus isolation ring model. The method of modeling the apparatus further comprises adding a dummy device between a body contact of the first n-type MOS device and a body contact of the second n-type MOS device.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: April 7, 2015
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chau-Wen Wei, Cheng-Te Chang, Chin-yuan Huang, Chih Ming Yang, Yi-Kan Cheng
  • Patent number: 8995177
    Abstract: Integrated circuits with memory elements are provided. A memory element may include a storage circuit coupled to data lines through access transistors. Access transistors may be used to read data from and write data into the storage circuit. An access transistor may have asymmetric source-drain resistances. The access transistor may have a first source-drain that is coupled to a data line and a second source-drain that is coupled to the storage circuit. The second source-drain may have a contact resistance that is greater than the contact resistance associated with the first source-drain. Access transistors with asymmetric source-drain resistances may have a first drive strength when passing a low signal and a second drive strength when passing a high signal to the storage circuit. The second drive strength may be less than the first drive strength. Access transistors with asymmetric drive strengths may be used to improve memory read/write performance.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: March 31, 2015
    Assignee: Altera Corporation
    Inventors: Shankar Sinha, Shih-Lin S. Lee, Peter J. McElheny
  • Patent number: 8981480
    Abstract: A semiconductor device includes a buried well, first and second active regions, an isolation layer, and a low resistance region. The buried well is disposed on a substrate and has impurity ions of a first conductivity type. The first and second active regions are disposed on the buried well and each have impurity ions of a second conductivity type, which is different from the first conductivity type. The isolation layer is disposed between the first and second active regions. The low resistance region is disposed between the isolation layer and the substrate and has impurity ions of the second conductivity type. The concentration of impurity ions in the low resistance region is greater than the concentration of the impurity ions in each of the first and second active regions.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: March 17, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun-Hee Lim, Satoru Yamada, Sung-Duk Hong
  • Patent number: 8981490
    Abstract: A method of fabricating a CMOS integrated circuit (IC) includes implanting a first n-type dopant at a first masking level that exposes a p-region of a substrate surface having a first gate stack thereon to form NLDD regions for forming n-source/drain extension regions for at least a portion of a plurality of n-channel MOS (NMOS) transistors on the IC. A p-type dopant is implanted at a second masking level that exposes an n-region in the substrate surface having a second gate stack thereon to form PLDD regions for at least a portion of a plurality of p-channel MOS (PMOS) transistors on the IC. A second n-type dopant is retrograde implanted including through the first gate stack to form a deep nwell (DNwell) for the portion of NMOS transistors. A depth of the DNwell is shallower below the first gate stack as compared to under the NLDD regions.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 17, 2015
    Assignee: Texas Instruments Incorporated
    Inventor: Mahalingam Nandakumar
  • Publication number: 20150069520
    Abstract: A chip includes a semiconductor substrate, a well region in the semiconductor substrate, and a transistor formed at a front side of the semiconductor substrate. A source/drain region of the transistor is disposed in the well region. A well pickup region is disposed in the well region, wherein the well pickup region is at a back side of the semiconductor substrate. A through-via penetrates through the semiconductor substrate, wherein the through-via electrically inter-couples the well pickup region and the source/drain region.
    Type: Application
    Filed: September 9, 2013
    Publication date: March 12, 2015
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventor: Jam-Wem Lee
  • Patent number: 8975707
    Abstract: A region for substrate potential is formed of an n-type well at a position in the direction of a channel length relative to the gate electrode and the position is between drain regions in the direction of a channel width. An n-type of a contact region with a higher concentration of n-type impurity than that of the region is provided in the region. The contact region is arranged away from the drain regions with a distance to obtain a desired breakdown voltage of PN-junction between the region and the drain region.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: March 10, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Masaya Ohtsuka
  • Patent number: 8975685
    Abstract: N-channel multi-time programmable memory devices having an N-conductivity type substrate, first and second P-conductivity type wells in the N-conductivity type substrate, N-conductivity type source and drain regions formed in the first P-conductivity type well, the source and drain regions being separated by a channel region, an oxide layer over the N-conductivity type substrate; and a floating gate extending over the channel region and over the second P-conductivity type well in the N-conductivity type substrate, the multi-time programmable memory cell being programmable by hot electron injection and erasable by hot hole injection.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: March 10, 2015
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Yi He, Xiang Lu, Albert Bergemont
  • Patent number: 8969190
    Abstract: Disclosed herein are various methods of forming a layer of silicon on a layer of silicon/germanium. In one example, a method disclosed herein includes forming a silicon/germanium material on a semiconducting substrate, after forming the silicon/germanium material, performing a heating process to raise a temperature of the substrate to a desired silicon formation temperature while flowing a silicon-containing precursor and a chlorine-containing precursor into the deposition chamber during the heating process, and, after the temperature of the substrate reaches the desired silicon formation temperature, forming a layer of silicon on the silicon/germanium material.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: March 3, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Stephan Kronholz, Joachim Patzer
  • Patent number: 8969967
    Abstract: An integrated circuit includes a stack having a semiconductor substrate with a first type of dopant, an UTBOX type buried insulating layer, electronic components, formed in the substrate, ground planes disposed beneath the buried insulating layer so as to be respectively plumb with corresponding components, wells with the first type of dopant, the wells being respectively beneath corresponding ground planes, and a bias circuit enabling distinct voltages to be applied to the ground planes by the wells. The wells are separated from the substrate by a deep well with a second type of dopant. The wells are separated from each other by a separating structure, which is either a lateral well having a second type of dopant or a block of insulating material.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: March 3, 2015
    Assignee: Commissariat a l'energie et aux energies alternatives
    Inventors: Jean-Philippe Noel, Bastien Giraud, Olivier Thomas
  • Patent number: 8963255
    Abstract: A semiconductor is formed on a (110) silicon (Si) substrate, with improved electron mobility. Embodiments include semiconductor devices having a silicon carbide (SiC) portion in the nFET channel region. An embodiment includes forming an nFET channel region and a pFET channel region in a Si substrate, such as a (110) Si substrate, and forming a silicon carbide (SiC) portion on the nFET channel region. The SiC portion may be formed by ion implantation of C followed by a recrystallization anneal or by epitaxial growth of SiC in a recess formed in the substrate. The use of SiC in the nFET channel region improves electron mobility without introducing topographical differences between NMOS and PMOS transistors.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: February 24, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Jeremy A. Wahl, Kingsuk Maitra
  • Patent number: 8946826
    Abstract: A well potential supply region is provided in an N-type well region of a cell array. Adjacent gates disposed in both sides of the well potential supply region in the horizontal direction and adjacent gates disposed in further both sides thereof are disposed at the same pitch. In addition, an adjacent cell array includes four gates each of which is opposed to the adjacent gates in the vertical direction. In other words, regularity in the shape of the gate patterns in the periphery of the well potential supply region is maintained.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: February 3, 2015
    Assignee: Panasonic Corporation
    Inventors: Masaki Tamaru, Kazuyuki Nakanishi, Hidetoshi Nishimura
  • Patent number: 8933517
    Abstract: Provided are a semiconductor device and a method of fabricating the semiconductor device. The semiconductor device may include first transistors that include a first gate insulating layer having a first thickness and second transistors include a second gate insulating layer having a second thickness less than the first thickness. At least one of the transistors formed on the first or second gate insulating layers may be directly over a dummy well.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: January 13, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-yean Oh, Woon-kyung Lee
  • Patent number: 8906767
    Abstract: A semiconductor device and method for fabricating a semiconductor device is disclosed. An exemplary semiconductor device includes a substrate including a metal oxide device. The metal oxide device includes first and second doped regions disposed within the substrate and interfacing in a channel region. The first and second doped regions are doped with a first type dopant. The first doped region has a different concentration of dopant than the second doped region. The metal oxide device further includes a gate structure traversing the channel region and the interface of the first and second doped regions and separating source and drain regions. The source region is formed within the first doped region and the drain region is formed within the second doped region. The source and drain regions are doped with a second type dopant. The second type dopant is opposite of the first type dopant.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: December 9, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Yue-Der Chih, Jam-Wem Lee, Cheng-Hsiung Kuo, Tsung-Che Tsai, Ming-Hsiang Song, Hung-Cheng Sung, Hung Cho Wang
  • Patent number: 8907429
    Abstract: A semiconductor device includes a silicon substrate; an element isolation region; an element region including a first well; a contact region; a gate electrode extending from the element region to a sub-region of the element isolation region between the element region and the contact region; a source diffusion region; a drain diffusion region; a first insulating region contacting a lower end of the source diffusion region; a second insulating region contacting a lower end of the drain diffusion region; and a via plug configured to electrically connect the gate electrode with the contact region. The first well is disposed below the gate electrode and is electrically connected with the contact region via the silicon substrate under the sub-region. The lower end of the element isolation region except the sub-region is located lower than the lower end of the first well.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: December 9, 2014
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Eiji Yoshida, Akihisa Yamaguchi
  • Patent number: 8907450
    Abstract: Methods and apparatus for metal semiconductor wafer bonding for high-Q devices are provided. An exemplary capacitor includes a first plate formed on a glass substrate, a second plate, and a dielectric layer. No organic bonding agent is used between the first plate and the glass substrate, and the dielectric layer can be an intrinsic semiconductor. A extrinsic semiconductor layer that is heavily doped contacts the dielectric layer. The dielectric and extrinsic semiconductor layers are sandwiched between the first and second plates. An intermetallic layer is formed between the first plate and the dielectric layer. The intermetallic layer is thermo compression bonded to the first plate and the dielectric layer. The capacitor can be coupled in a circuit as a high-Q capacitor and/or a varactor, and can be integrated with a mobile device.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: December 9, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Changhan Yun, Chengjie Zuo, Chi Shun Lo, Jonghae Kim, Mario F. Velez
  • Patent number: 8890259
    Abstract: An SCR apparatus includes an SCR structure and a first N injection region. The SCR structure includes a P+ injection region, a P well, an N well and a first N+ injection region, the first N injection region is located under an anode terminal of the P+ injection region of the SCR structure. A method for adjusting a sustaining voltage therefor is provided as well.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: November 18, 2014
    Assignees: CSMC Technologies Fab1 Co., Ltd., CSMC Technologies FAB2 Co., Ltd.
    Inventors: Meng Dai, Zhongyu Lin
  • Patent number: 8890256
    Abstract: The invention relates to a design structure, and more particularly, to a design structure for a heavy ion tolerant device, method of manufacturing the same and a structure thereof. The structure includes a first device having a diffusion comprising a drain region and source region and a second device having a diffusion comprising a drain region and source region. The first and second device are aligned in an end-to-end layout along a width of the diffusion of the first device and the second device. A first isolation region separating the diffusion of the first device and the second device.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: November 18, 2014
    Assignee: International Business Machines Corporation
    Inventors: Mark C. Hakey, Tak H. Ning, Philip J. Oldiges, Henry H. K. Tang
  • Patent number: 8884372
    Abstract: At least one analog signal compatible complementary metal oxide semiconductor (CMOS) switch circuit is incorporated with digital logic circuits in an integrated circuit. The integrated circuit may further comprise a digital processor and memory, e.g., microcontroller, microprocessor, digital signal processor (DSP), programmable logic array (PLA), application specific integrated circuit (ASIC), etc., for controlling operation of the at least one analog signal compatible CMOS switch for switching analog signals, e.g., audio, video, serial communications, etc. The at least one analog signal compatible CMOS switch may have first and second states, e.g., single throw “on” or “off”, or double throw common to a or b, controlled by a single digital control signal of either a logic “0” or a logic “1”.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: November 11, 2014
    Assignee: Microchip Technology Incorporated
    Inventor: James K. Russell
  • Patent number: 8853787
    Abstract: A semiconductor device includes a substrate with one or more active regions and an isolation layer formed to surround an active region and to extend deeper into the substrate than the one or more active regions. The semiconductor further includes a gate electrode, which covers a portion of the active region, and which has one end portion thereof extending over the isolation layer.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: October 7, 2014
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Jae-Han Cha, Kyung-Ho Lee, Sun-Goo Kim, Hyung-Suk Choi, Ju-Ho Kim, Jin-Young Chae, In-Taek Oh
  • Patent number: 8847332
    Abstract: A high voltage semiconductor device is provided. The device includes a semiconductor substrate having a high voltage well with a first conductivity type therein. A gate structure is disposed on the semiconductor substrate of the high voltage well. A source doped region and a drain doped region are in the high voltage well on both sides of the gate structure, respectively. A lightly doped region with the first conductivity type is between the source and drain doped regions and relatively near to the source doped region. The disclosure also presents a method for fabricating a high voltage semiconductor device.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: September 30, 2014
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Wei-Chun Chou, Yi-Hung Chiu, Chu-Feng Chen, Cheng-Yi Hsieh, Chung-Ren Lao