Patents by Inventor Liyang AN

Liyang AN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9222978
    Abstract: Aspects of the invention relate to techniques of using two-dimensional scan architecture for testing and diagnosis. A two-dimensional scan cell network may be constructed by coupling input for each scan cell to outputs for two or more other scan cells and/or primary inputs through a multiplexer. To test and diagnose the two-dimensional scan cell network, the two-dimensional scan cell network may be loaded with chain patterns and unloaded with corresponding chain test data along two or more sets of scan paths. Based on the chain test data, one or more defective scan cells or defective scan cell candidates may be determined.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: December 29, 2015
    Assignee: Mentor Graphics Corporation
    Inventors: Yu Huang, Wu-Tung Cheng, Ruifeng Guo, Manish Sharma, Liyang Lai
  • Publication number: 20150324423
    Abstract: A report creation method, system, and device are described, and the method includes that: abstraction processing is performed on a data table in a database, and an Abstract Data Record (ADR) model is created; a report template is created according to the ADR model, and the report template is stored; and the created report template is called, a report query operation is executed, and report data obtained by querying is displayed. Through the disclosure, a user can create a complicated report template quickly, without involving a complicated secondary development process and writing a secondary development script.
    Type: Application
    Filed: October 28, 2013
    Publication date: November 12, 2015
    Inventors: Chun Wang, Liyang Zhao
  • Patent number: 9086459
    Abstract: A diagnosis technique to improve scan cell internal defect diagnostic resolution using scan cell internal fault models.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: July 21, 2015
    Assignee: Mentor Graphics Corporation
    Inventors: Ruifeng Guo, Liyang Lai, Yu Huang, Wu-Tung Cheng
  • Publication number: 20150194484
    Abstract: A method is disclosed for forming a semiconductor device. A first opening is formed for an STI on a semiconductor substrate and a first process is performed to deposit first oxide into the first opening. A second opening is formed to remove a portion of the first oxide from the first opening and second process(es) is/are performed to deposit second oxide into the second opening and over a remaining portion of the first oxide. A portion of the semiconductor device is formed over a portion of a surface of the second oxide. A semiconductor device includes an STI including a first oxide formed in a lower portion of a trench of the STI and a second oxide formed in an upper portion of the trench and above the first oxide. The semiconductor device includes a portion of the semiconductor device formed over a portion of the second oxide.
    Type: Application
    Filed: March 19, 2015
    Publication date: July 9, 2015
    Inventors: Ming Cai, Dechao Guo, Liyang Song, Chun-chen Yeh
  • Publication number: 20150194334
    Abstract: A method is disclosed for forming a semiconductor device. A first opening is formed for an STI on a semiconductor substrate and a first process is performed to deposit first oxide into the first opening. A second opening is formed to remove a portion of the first oxide from the first opening and second process(es) is/are performed to deposit second oxide into the second opening and over a remaining portion of the first oxide. A portion of the semiconductor device is formed over a portion of a surface of the second oxide. A semiconductor device includes an STI including a first oxide formed in a lower portion of a trench of the STI and a second oxide formed in an upper portion of the trench and above the first oxide. The semiconductor device includes a portion of the semiconductor device formed over a portion of the second oxide.
    Type: Application
    Filed: March 19, 2015
    Publication date: July 9, 2015
    Inventors: Ming Cai, Dechao Guo, Liyang Song, Chun-chen Yeh
  • Patent number: 9059244
    Abstract: A method is disclosed for forming a semiconductor device. A first opening is formed for an STI on a semiconductor substrate and a first process is performed to deposit first oxide into the first opening. A second opening is formed to remove a portion of the first oxide from the first opening and second process(es) is/are performed to deposit second oxide into the second opening and over a remaining portion of the first oxide. A portion of the semiconductor device is formed over a portion of a surface of the second oxide. A semiconductor device includes an STI including a first oxide formed in a lower portion of a trench of the STI and a second oxide formed in an upper portion of the trench and above the first oxide. The semiconductor device includes a portion of the semiconductor device formed over a portion of the second oxide.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: June 16, 2015
    Assignee: International Business Machines Corporation
    Inventors: Ming Cai, Dechao Guo, Liyang Song, Chun-chen Yeh
  • Publication number: 20150144600
    Abstract: A stainless steel weldment and pad combined welding method includes steps of: (a) respectively processing and pairing butts of to-be-welded portions of two weldments, wherein, during pairing, inner walls of the two weldments are aligned at the same plane; the butts of the two weldments are opposed to form a V-shaped groove with an angle ?; and between bottoms of the butts of the two weldments is kept a gap L of 2-4 mm; (b) providing a copper pad at the gap between the bottoms of the butts of the two weldments, wherein the copper pad closely attaches to the inner walls of the two weldments; (c) welding the V-shaped groove to form a root pass; and (d) removing the copper pad, and filling the root pass to be welded into a cover pass.
    Type: Application
    Filed: September 3, 2013
    Publication date: May 28, 2015
    Inventors: Jiewen Xia, Qingping Huang, Jialin Chen, Yuxian Su, Wenwei Li, Liyang Pang, Yan Wu
  • Patent number: 9040399
    Abstract: A structure includes a substrate; a transistor disposed over the substrate, the transistor comprising a fin comprised of Silicon that is implanted with Carbon; and a gate dielectric layer and gate metal layer overlying a portion of the fin that defines a channel of the transistor. In the structure a concentration of Carbon within the fin is selected to establish a desired voltage threshold of the transistor. Methods to fabricate a FinFET transistor are also disclosed. Also disclosed is a planar transistor having a Carbon-implanted well where the concentration of the Carbon within the well is selected to establish a desired voltage threshold of the transistor.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: May 26, 2015
    Assignee: International Business Machines Corporation
    Inventors: MaryJane Brodsky, Ming Cai, Dechao Guo, William K. Henson, Shreesh Narasimha, Yue Liang, Liyang Song, Yanfeng Wang, Chun-Chen Yeh
  • Patent number: 9015543
    Abstract: Aspects of the invention relate to techniques for determining scan chains that could be diagnosed with high resolution. A circuit design and the information of scan cells for the circuit design are analyzed to determine information of potential logic relationship between the scan cells. The information of potential logic relationship between the scan cells may comprise information of fan-in cones for the scan cells. Based at least in part on the information of potential logic relationship between the scan cells, scan chains may be formed. The formation of scan chains may be further based on layout information of the circuit design. The formation of scan chains may be further based on compactor information of the circuit design.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: April 21, 2015
    Assignee: Mentor Graphics Corporation
    Inventors: Yu Huang, Wu-Tung Cheng, Ruifeng Guo, Liyang Lai
  • Publication number: 20150102453
    Abstract: A method is disclosed for forming a semiconductor device. A first opening is formed for an STI on a semiconductor substrate and a first process is performed to deposit first oxide into the first opening. A second opening is formed to remove a portion of the first oxide from the first opening and second process(es) is/are performed to deposit second oxide into the second opening and over a remaining portion of the first oxide. A portion of the semiconductor device is formed over a portion of a surface of the second oxide. A semiconductor device includes an STI including a first oxide formed in a lower portion of a trench of the STI and a second oxide formed in an upper portion of the trench and above the first oxide. The semiconductor device includes a portion of the semiconductor device formed over a portion of the second oxide.
    Type: Application
    Filed: October 15, 2013
    Publication date: April 16, 2015
    Applicant: International Business Machines Corporation
    Inventors: Ming Cai, Dechao Guo, Liyang Song, Chun-chen Yeh
  • Patent number: 8958246
    Abstract: A vertically foldable memory array structure is provided, comprising: a memory module distributed in columns and rows, comprising: a drain selection transistor; a bottom connecting line and a source selection transistor; and a plurality of memory cell transistors connected between the drain selection transistor and the bottom connecting line and between the source selection transistor and the bottom connecting line, a drain of each drain selection transistor is connected to a bit line, a drain of a drain selection transistor in a Mth vertically foldable memory module in a Nth column and a source of a source selection transistor in a (M?1)th memory module in a (N+1)th column are connected to a same bit line, gates of the drain selection transistors and the source selection transistors in all the memory modules in the Nth column are connected to a same drain selection line and a same source selection line.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: February 17, 2015
    Assignee: Tsinghua University
    Inventors: Liyang Pan, Fang Yuan
  • Patent number: 8957464
    Abstract: A method for fabricating a transistor with uniaxial stress channels includes depositing an insulating layer onto a substrate, defining bars within the insulating layer, recessing a channel into the substrate, growing a first semiconducting material in the channel, defining a gate stack over the bars and semiconducting material, defining source and drain recesses and embedding a second semiconducting material into the source and drain recesses.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: February 17, 2015
    Assignee: International Business Machines Corporation
    Inventors: Ming Cai, Dechao Guo, Liyang Song, Chun-Chen Yeh
  • Patent number: 8927364
    Abstract: A method of forming a complementary metal oxide semiconductor (CMOS) device including an n-type field effect transistor (NFET) and an p-type field effect transistor (PFET) having fully silicided gates electrode in which an improved dual stress buried insulator is employed to incorporate and advantageous mechanical stress into the device channel of the NFET and PFET. The method can be imposed on a bulk substrate or extremely thin silicon on insulator (ETSOI) substrate. The device includes a semiconductor substrate, a plurality of shallow trench isolations structures formed in the ETSOI layer, NFET having a source and drain region and a gate formation, a PFET having a source and drain region, and a gate formation, an insulator layer, including a stressed oxide or nitride, deposited inside the substrate of the NFET, and a second insulator layer, including either an stressed oxide or nitride, deposited inside the substrate of the PFET.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: January 6, 2015
    Assignee: International Business Machines Corporation
    Inventors: Ming Cai, Dechao Guo, Liyang Song, Chun-Chen Yeh
  • Publication number: 20150001625
    Abstract: A method of forming a complementary metal oxide semiconductor (CMOS) device including an n-type field effect transistor (NFET) and an p-type field effect transistor (PFET) having fully silicided gates electrode in which an improved dual stress buried insulator is employed to incorporate and advantageous mechanical stress into the device channel of the NFET and PFET. The method can be imposed on a bulk substrate or extremely thin silicon on insulator (ETSOI) substrate. The device includes a semiconductor substrate, a plurality of shallow trench isolations structures formed in the ETSOI layer, NFET having a source and drain region and a gate formation, a PFET having a source and drain region, and a gate formation, an insulator layer, including a stressed oxide or nitride, deposited inside the substrate of the NFET, and a second insulator layer, including either an stressed oxide or nitride, deposited inside the substrate of the PFET.
    Type: Application
    Filed: September 19, 2014
    Publication date: January 1, 2015
    Inventors: Ming Cai, Dechao Guo, Liyang Song, Chun-chen Yeh
  • Patent number: 8917549
    Abstract: A NOR flash memory array structure is provided, comprising: a substrate (100); and a two dimensional memory array structure formed on the substrate (100) and comprising: a plurality of memory cell columns arranged in a first direction, and each memory cell column including a plurality of memory cells (300), in which each memory cell (300) comprises: a channel region (308) located on the substrate (100), a gate structure located on the channel region (308) and formed by a tunneling oxide layer (304), a silicon nitride layer (303), a barrier oxide layer (302) and a polysilicon gate layer (301) stacked sequentially, a source region (306) and a drain region (305) located at a first edge and a second edge of the gate structure respectively; a plurality of word lines WL; a source line SL for connecting the source regions of all the memory cells; and a plurality of bit lines BL.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: December 23, 2014
    Assignee: Tsinghua University
    Inventors: Liyang Pan, Lifang Liu
  • Publication number: 20140327702
    Abstract: The invention includes a method including the steps of obtaining a plurality of images, each of the images in the plurality having at least one corresponding region, generating a merged image, the merged image also having the corresponding region. The step of generating includes selecting an image source from the plurality of images to source image data for the corresponding region in the merged image by comparing attributes of the corresponding regions of the plurality of images to identify the image source having preferred attributes.
    Type: Application
    Filed: November 26, 2012
    Publication date: November 6, 2014
    Inventors: Kevin Kreeger, Andrew P. Smith, Ashwini Kshirsagar, Jun Ge, Yiheng Zhang, Haili Chui, Christopher Ruth, Xiangwei Zhang, Liyang Wei, Jay Stein
  • Patent number: 8862956
    Abstract: Aspects of the invention relate to techniques for diagnosing compound hold-time faults. A profiling-based scan chain diagnosis may be performed on a faulty scan chain to determine observed scan cell failing probability information and one or more faulty segments based on scan pattern test information. Calculated scan cell failing probability information may then be derived. Based on the calculated scan cell failing probability information and the observed scan cell failing probability information, one or more validated faulty segments are verified to have one or more compound hold-time faults. Finally, one or more clock defect suspects may be identified based on information of the one or more validated faulty segments.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: October 14, 2014
    Assignee: Mentor Graphics Corporation
    Inventors: Yu Huang, Wu-Tung Cheng, Ting-Pu Tai, Liyang Lai, Ruifeng Guo
  • Publication number: 20140237310
    Abstract: Aspects of the invention relate to ring-oscillator-based test architecture for characterizing interconnects in stacked designs. The disclosed ring-oscillator-based test architecture comprises a plurality of boundary scan cells coupled to a plurality of interconnects. Each of the plurality of boundary scan cells can be configured to operate as, based on control signals, a conventional boundary scan cell or any bit of an asynchronous counter. The control signals are supplied by control circuitry.
    Type: Application
    Filed: February 18, 2014
    Publication date: August 21, 2014
    Applicant: Mentor Graphics Corporation
    Inventors: Wu-Tung Cheng, Ruifeng Guo, Yu Huang, Liyang Lai, Jing YE, Yu HU
  • Patent number: 8748934
    Abstract: The present disclosure discloses a vertical selection transistor, a memory cell having the vertical selection transistor, a three-dimensional memory array structure and a method for fabricating the three-dimensional memory array structure. The vertical selection transistor comprises: an upper electrode; a lower electrode; a first semiconductor layer, a second semiconductor layer, a third semiconductor layer and a fourth semiconductor layer vertically stacked between the lower electrode and the upper electrode; and a gate stack formed on a side of the second semiconductor layer, in which the first semiconductor layer and the third semiconductor layer are first type doped layers, the second semiconductor layer and the fourth semiconductor layer are second type doped layers, and a doping concentration of the second semiconductor layer is lower than that of the first semiconductor layer or that of the third semiconductor layer respectively.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: June 10, 2014
    Assignee: Tsinghua University
    Inventors: Liyang Pan, Fang Yuan
  • Publication number: 20140124861
    Abstract: A method for fabricating a transistor with uniaxial stress channels includes depositing an insulating layer onto a substrate, defining bars within the insulating layer, recessing a channel into the substrate, growing a first semiconducting material in the channel, defining a gate stack over the bars and semiconducting material, defining source and drain recesses and embedding a second semiconducting material into the source and drain recesses.
    Type: Application
    Filed: January 14, 2014
    Publication date: May 8, 2014
    Applicant: International Business Machines Corporation
    Inventors: Ming Cai, Dechao Guo, Liyang Song, Chun-Chen Yeh