Patents by Inventor Yansong Zhang

Yansong Zhang 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: 11469285
    Abstract: A display substrate includes a substrate, including a plurality of island portions spaced apart from each other and a plurality of bridge portions connected between the island portions, the substrate having a plurality of openings in regions without the plurality of island portions and the plurality of bridge portions; a layer structure on each of the plurality of island portions and including a light-emitting layer, a common auxiliary layer and a first electrode layer stacked with each other, the layer structure on each of the plurality of island portions forms at least one light-emitting unit. On each of the plurality of island portions, an orthographic projection of the common auxiliary layer on the island portion covers an orthographic projection of the light-emitting layer on the island portion.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: October 11, 2022
    Assignee: Beijing BOE Technology Development Co., Ltd.
    Inventors: Haohan Zhang, Yansong Li, Pinfan Wang, Shanshan Bai
  • Publication number: 20210256006
    Abstract: The disclosure includes aspects of a system and/or method including a hash multi-table joining implementation method based on a grouping vector, which includes the following steps: 1) rewriting an SQL query command, and dividing a complete OLAP query command into a subtask of selecting-projecting-grouping-joining operation and an subtask of aggregating operation; 2) creating and generating grouping vector metadata corresponding to a GROUP-BY statement in an SQL command through the subtask of selecting-projecting-grouping-joining operation, and creating a vector index as an output result of the subtask of selecting-projecting-grouping-joining operation; 3) executing aggregation computation based on the vector index through the subtask of aggregating operation, and storing an aggregation computation result in a corresponding unit of a grouping vector aggregator with the same length as the grouping vector; and 4) merging the aggregation computation result in the grouping vector aggregator with the grouping vecto
    Type: Application
    Filed: January 14, 2020
    Publication date: August 19, 2021
    Inventors: Yansong Zhang, Yu Zhang, Shan Wang
  • Publication number: 20170170968
    Abstract: A generation method, a query method, and an apparatus of a two-dimensional filter are provided. In this solution, a two-dimensional filter includes a two-dimensional matrix, where the two-dimensional matrix may be linked to multiple key value element groups, and therefore flexibility of the filter is improved. Further, when it is queried whether a key value element is a key value element included in multiple key value element groups, it only needs to perform a query based on the two-dimensional filter, and it does not need to generate a Bloom filter corresponding to each key value element group. In addition, when it is queried whether a key value element is a key value element included in multiple key value element groups, it does not need to perform queries one by one based on each of multiple Bloom filters. Therefore, a problem of low query efficiency currently is further resolved.
    Type: Application
    Filed: February 27, 2017
    Publication date: June 15, 2017
    Inventors: Yansong Zhang, Hong Chen, Cuiping Li, Dongwang Sun
  • Patent number: 9579744
    Abstract: A system for forming a weld nugget in a metal work piece includes a power supply, actuator, electrodes, and controller. The actuator delivers a variable electrode force to the work piece in response to a force command. The controller executes a method by transmitting a welding current command to the power supply to cause the power supply to output a welding current to the electrodes. The controller transmits the force command to the actuator to apply the variable electrode force, via the electrodes, to the work piece at a first force level. The variable electrode force increases from a second force level immediately upon conclusion of a first duration to minimize weld expulsion. The second force level commences at a point in time in the dynamic resistance profile at which a dynamic resistance value of the work piece decreases at a threshold rate during formation of the weld nugget.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: February 28, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Yansong Zhang, Guanlong Chen, Pei-Chung Wang, Yang-Yang Zhao, Xinmin Lai
  • Publication number: 20150034609
    Abstract: A system for forming a weld nugget in a metal work piece includes a power supply, actuator, electrodes, and controller. The actuator delivers a variable electrode force to the work piece in response to a force command. The controller executes a method by transmitting a welding current command to the power supply to cause the power supply to output a welding current to the electrodes. The controller transmits the force command to the actuator to apply the variable electrode force, via the electrodes, to the work piece at a first force level. The variable electrode force increases from a second force level immediately upon conclusion of a first duration to minimize weld expulsion. The second force level commences at a point in time in the dynamic resistance profile at which a dynamic resistance value of the work piece decreases at a threshold rate during formation of the weld nugget.
    Type: Application
    Filed: July 30, 2013
    Publication date: February 5, 2015
    Applicants: SHANGHAI JIAO TONG UNIVERSITY, GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yansong Zhang, Guanlong Chen, Pei-Chung Wang, Yang-Yang Zhao, Xinmin Lai
  • Patent number: 8878093
    Abstract: A method and apparatus inspect a quality of an adhesive material used for joining a pair of work surfaces during a weld-bonding process. A pair of work pieces are at least partially bonded by a layer of the adhesive material, and the dynamic displacement of one or both electrodes is measured through a duration of the resistance welding process to determine relative moisture content of the adhesive. A control action is executed when the dynamic displacement exceeds a stored threshold value. The apparatus includes a welding device having a pair of electrodes for providing a clamping force and an electrical current necessary for forming the welded joint, a sensor for measuring a dynamic displacement of at least one of the pair of electrodes and/or another portion of the welding device during formation of the welded joint. A controller has an algorithm for determining a relative moisture using the dynamic displacement.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: November 4, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Pei-Chung Wang, Zongqing Lin, Xinmin Lai, Yansong Zhang, Guanlong Chen
  • Patent number: 8803024
    Abstract: A method to diagnose weld integrity in a welding process includes monitoring a weld indentation characteristic, comparing the monitored weld indentation characteristic to a threshold weld indentation characteristic, and identifying a discrepant weld when the weld indentation characteristic comparison shows the monitored weld indentation characteristic violates the threshold weld indentation characteristic.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: August 12, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Pei-Chung Wang, Zongqing Lin, Xinmin Lai, Yansong Zhang, Guanlong Chen, Sheila A. Marin
  • Publication number: 20110284501
    Abstract: A welding system includes a first electrode, a first metal substrate having a first melting point temperature, and a second metal substrate having a second melting point temperature and disposed adjacent and in contact with the first metal substrate to define a faying interface therebetween. The welding system also includes a second electrode spaced apart from the first electrode and disposed in electrically-conductive relationship with the second metal substrate. Further, the welding system includes a flexible strip disposed between and in electrically-conductive relationship with each of the first electrode and the first metal substrate. The flexible strip is formed from an electrically-conductive material and has a melting point temperature that is greater than or equal to each of the first melting point temperature and the second melting point temperature.
    Type: Application
    Filed: March 3, 2011
    Publication date: November 24, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Pei-Chung Wang, Zhongqin Lin, Xinmin Lai, Yansong Zhang
  • Publication number: 20100019785
    Abstract: A method and apparatus inspect a quality of an adhesive material used for joining a pair of work surfaces during a weld-bonding process. A pair of work pieces are at least partially bonded by a layer of the adhesive material, and the dynamic displacement of one or both electrodes is measured through a duration of the resistance welding process to determine relative moisture content of the adhesive. A control action is executed when the dynamic displacement exceeds a stored threshold value. The apparatus includes a welding device having a pair of electrodes for providing a clamping force and an electrical current necessary for forming the welded joint, a sensor for measuring a dynamic displacement of at least one of the pair of electrodes and/or another portion of the welding device during formation of the welded joint. A controller has an algorithm for determining a relative moisture using the dynamic displacement.
    Type: Application
    Filed: July 28, 2008
    Publication date: January 28, 2010
    Applicant: GM GLOBAL TECHNOLOGT OPERATIONS, INC.
    Inventors: Pei-Chung Wang, Zongqing Lin, Xinmin Lai, Yansong Zhang, Guanlong Chen
  • Publication number: 20090152253
    Abstract: A method to diagnose weld integrity in a welding process includes monitoring a weld indentation characteristic, comparing the monitored weld indentation characteristic to a threshold weld indentation characteristic, and identifying a discrepant weld when the weld indentation characteristic comparison shows the monitored weld indentation characteristic violates the threshold weld indentation characteristic.
    Type: Application
    Filed: December 9, 2008
    Publication date: June 18, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Pei-Chung Wang, Zongqing Lin, Xinmin Lai, Yansong Zhang, Guanlong Chen, Samuel P. Marin, Sheila A. Marin
  • Publication number: 20080237303
    Abstract: A method is provided for determining that the electrodes of an electric resistance welder are in need of replacement and dressing includes monitoring the rate at which the depth of the weld indentation caused by the electrode changes during the progressive wearing of the electrodes during the making of successive welds. The electrodes are then dressed when it is determined that the rate of change of the depth of the weld indentation formed by the electrodes has substantially leveled off to a stable depth of indentation.
    Type: Application
    Filed: March 28, 2007
    Publication date: October 2, 2008
    Applicants: GM Global Technology Operations, Inc., SHANGHAI JIAOTONG UNIVERSITY
    Inventors: Zhongqin Lin, Pei-Chung Wang, Xinmin Lai, Yansong Zhang, Guanlong Chen, Peter C. Sun