Patents by Inventor Huaqiang Wu

Huaqiang Wu 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).

  • Publication number: 20180330788
    Abstract: An operation method of a resistance random access memory and a resistance random access memory apparatus are provided. The method includes: applying an initial reset voltage to a storage unit; carrying out a read check operation to acquire a resistance value of the storage unit; judging whether the resistance value of the storage unit reaches a preset target resistance value in a high resistance state; if the resistance value of the storage unit is less than the preset target resistance value in the high resistance state, applying a set voltage to the storage unit to set the storage unit to a preset target resistance value in a low resistance state, then applying a reset voltage of which an amount is increased to the storage unit, and repeating the read check operation and the subsequent steps until the storage unit reaches the preset target resistance value in the high resistance state.
    Type: Application
    Filed: December 22, 2016
    Publication date: November 15, 2018
    Inventors: Chen Wang, Huaqiang Wu, He Qian, Bin Gao
  • Patent number: 9712124
    Abstract: The present disclosure provides a distributed amplifier, including: a drain transmission line; a gate transmission line; GFETs, in which sources of the graphene field-effect transistors are respectively grounded; gates of the graphene field-effect transistors respectively connected with a plurality of first shunt capacitors which are grounded; the gate transmission line is connected with a plurality of first nodes respectively between the gates of the graphene field-effect transistors and the plurality of first shunt capacitors, having a plurality of first inductors respectively between each two first nodes; drains of the graphene field-effect transistors respectively connected with a plurality of second shunt capacitors which are grounded; the drain transmission line is connected with a plurality of second nodes respectively between the drains of the graphene field-effect transistors and the plurality of second shunt capacitors, having a plurality of second inductors respectively between each two second node
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: July 18, 2017
    Assignee: Tsinghua University
    Inventors: Huaqiang Wu, Hongming Lyu, He Qian, Zhiping Yu, Yilin Huang, Jinyu Zhang
  • Patent number: 9659733
    Abstract: Method for preparing a molybdenum disulfide film used in a field emission device, including: providing a sulfur vapor; blowing the sulfur vapor into a reaction chamber having a substrate and MoO3 powder to generate a gaseous MoOx; feeding the sulfur vapor into the reaction chamber sequentially, heating the reaction chamber to a predetermined reaction temperature and maintaining for a predetermined reaction time, and then cooling the reaction chamber to a room temperature and maintaining for a second reaction time to form a molybdenum disulfide film on the surface of the substrate, in which the molybdenum disulfide film grows horizontally and then grows vertically. The method according to the present disclosure is simple and easy, and the field emission property of the MoS2 film obtained is good.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: May 23, 2017
    Assignee: Tsinghua University
    Inventors: Huaqiang Wu, Shuoguo Yuan, Han Li, He Qian
  • Patent number: 9455352
    Abstract: Memory devices having an increased effective channel length and/or improved TPD characteristics, and methods of making the memory devices are provided. The memory devices contain two or more memory cells on a semiconductor substrate and bit line dielectrics between the memory cells. The memory cell contains a charge trapping dielectric stack, a poly gate, a pair of pocket implant regions, and a pair of bit lines. The bit line can be formed by an implant process at a higher energy level and/or a higher concentration of dopants without suffering device short channel roll off issues because spacers at bit line sidewalls constrain the implant in narrower implant regions.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: September 27, 2016
    Assignee: CYPRESS SEMICONDUCTOR CORPORATION
    Inventors: Ning Cheng, Huaqiang Wu, Hiro Kinoshita, Jihwan Choi, Angela Hui
  • Publication number: 20160254790
    Abstract: The present disclosure provides a distributed amplifier, including: a drain transmission line; a gate transmission line; GFETs, in which sources of the graphene field-effect transistors are respectively grounded; gates of the graphene field-effect transistors respectively connected with a plurality of first shunt capacitors which are grounded; the gate transmission line is connected with a plurality of first nodes respectively between the gates of the graphene field-effect transistors and the plurality of first shunt capacitors, having a plurality of first inductors respectively between each two first nodes; drains of the graphene field-effect transistors respectively connected with a plurality of second shunt capacitors which are grounded; the drain transmission line is connected with a plurality of second nodes respectively between the drains of the graphene field-effect transistors and the plurality of second shunt capacitors, having a plurality of second inductors respectively between each two second node
    Type: Application
    Filed: July 14, 2015
    Publication date: September 1, 2016
    Inventors: HONGMING LYU, ZHIPING YU, YILIN HUANG, JINYU ZHANG, HUAQIANG WU, HE QIAN
  • Publication number: 20160118586
    Abstract: A method for forming a stacked structure includes steps of: providing a first layer; oxidizing at least a part of the first layer to form a first oxide layer on the first layer; forming a second layer on the first oxide layer; and forming a second oxide layer between the first oxide layer and the second layer by rapid thermal annealing.
    Type: Application
    Filed: May 28, 2014
    Publication date: April 28, 2016
    Inventors: Huaqiang WU, Minghao WU, Yue BAI, He QIAN
  • Publication number: 20160108521
    Abstract: The present disclosure relates to a method for preparing a molybdenum disulfide film used in a field emission device, including: providing a sulfur vapor; blowing the sulfur vapor into a reaction chamber having a substrate and MoO3 powder to generate a gaseous MoOx; feeding the sulfur vapor into the reaction chamber sequentially, heating the reaction chamber to a predetermined reaction temperature and maintaining for a predetermined reaction time, and then cooling the reaction chamber to a room temperature and maintaining for a second reaction time to form a molybdenum disulfide film on the surface of the substrate, in which the molybdenum disulfide film grows horizontally and then grows vertically. The method according to the present disclosure is simple and easy, and the field emission property of the MoS2 film obtained is good.
    Type: Application
    Filed: June 16, 2015
    Publication date: April 21, 2016
    Inventors: Huaqiang WU, Shuoguo YUAN, Han LI, He QIAN
  • Publication number: 20160072062
    Abstract: An Al-W-O stack structure applicable to a resistive random access memory according to an embodiment of the invention comprises a tungsten top electrode, a tungsten oxide layer formed on the tungsten lower electrode, an aluminum oxide layer formed on the tungsten oxide layer and an aluminum top electrode formed on the aluminum oxide layer. The invention utilizes the different properties of two metals, namely aluminum and tungsten in bonding with oxygen ions, to obtain a resistive random access memory with more stable performances, lower power consumption and larger high resistance-low resistance ratio.
    Type: Application
    Filed: May 27, 2014
    Publication date: March 10, 2016
    Applicant: TSINGHUA UNIVERSITY
    Inventors: Huaqiang WU, Yue BAI, Minghao WU, He QIAN
  • Patent number: 9245895
    Abstract: Memory devices having improved TPD characteristics and methods of making the memory devices are provided. The memory devices contain two or more memory cells on a semiconductor substrate and bit line openings containing a bit line dielectric between the memory cells. The memory cell contains a charge storage layer and a first poly gate. The bit line opening extends into the semiconductor substrate. By containing the bit line dielectric in the bit line openings that extend into the semiconductor substrate, the memory device can improve the electrical isolation between memory cells, thereby preventing and/or mitigating TPD.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: January 26, 2016
    Assignee: Cypress Semiconductor Corporation
    Inventors: Ning Cheng, Kuo-Tung Chang, Hiro Kinoshita, Chih-Yuh Yang, Lei Xue, Chungho Lee, Minghao Shen, Angela Hui, Huaqiang Wu
  • Publication number: 20150325790
    Abstract: A method for forming a resistive random access memory is provided. The method comprises: steps of: S1) providing a silicon substrate; S2) forming an isolation layer on the silicon substrate; S3) forming a bottom electrode on the isolation layer; S4) forming a resistive switching material layer on the bottom electrode by magnetron sputtering at room temperature, comprising: S41) forming a first resistive switching layer of TaOx on the bottom electrode by magnetron sputtering under a first deposit pressure and in a first atmosphere, in which 0<x<2; and S42) forming a second resistive switching layer of TaOy on the first resistive switching layer by magnetron sputtering under a second deposit pressure and in a second atmosphere, in which 0<y<2.5; S5) forming a top electrode on the resistive switching material layer; and S6) removing the resistive switching materials TaOx and TaOy sputtered onto contacts of the bottom electrode in step S4.
    Type: Application
    Filed: December 25, 2013
    Publication date: November 12, 2015
    Inventors: HUAQIANG WU, XINYI LI, HE QIAN
  • Publication number: 20140167138
    Abstract: Memory devices having an increased effective channel length and/or improved TPD characteristics, and methods of making the memory devices are provided. The memory devices contain two or more memory cells on a semiconductor substrate and bit line dielectrics between the memory cells. The memory cell contains a charge trapping dielectric stack, a poly gate, a pair of pocket implant regions, and a pair of bit lines. The bit line can be formed by an implant process at a higher energy level and/or a higher concentration of dopants without suffering device short channel roll off issues because spacers at bit line sidewalls constrain the implant in narrower implant regions.
    Type: Application
    Filed: December 17, 2013
    Publication date: June 19, 2014
    Applicant: SPANSION LLC
    Inventors: Ning Cheng, Huaqiang Wu, Hiro Kinoshita, Jihwan Choi, Angela Hui
  • Patent number: 8653581
    Abstract: Memory devices having an increased effective channel length and/or improved TPD characteristics, and methods of making the memory devices are provided. The memory devices contain two or more memory cells on a semiconductor substrate and bit line dielectrics between the memory cells. The memory cell contains a charge trapping dielectric stack, a poly gate, a pair of pocket implant regions, and a pair of bit lines. The bit line can be formed by an implant process at a higher energy level and/or a higher concentration of dopants without suffering device short channel roll off issues because spacers at bit line sidewalls constrain the implant in narrower implant regions.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: February 18, 2014
    Assignee: Spansion LLC
    Inventors: Ning Cheng, Huaqiang Wu, Hiro Kinoshita, Jihwan Choi, Angela Hui
  • Patent number: 8549608
    Abstract: An implement method and device of a terminal call firewall is disclosed. According to the method, a call number is added into a blacklist list when it is determined that the call number is not in the blacklist list stored and an address list and it is determined that a call duration is less than a set call duration threshold. A device is disclosed for automatically blocking incoming calls to the terminal according to the method.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: October 1, 2013
    Assignee: ZTE Corporation
    Inventor: Huaqiang Wu
  • Patent number: 8455268
    Abstract: Methods of replacing/reforming a top oxide around a charge storage element of a memory cell and methods of improving quality of a top oxide around a charge storage element of a memory cell are provided. The method can involve removing a first poly over a first top oxide from the memory cell; removing the first top oxide from the memory cell; and forming a second top oxide around the charge storage element. The second top oxide can be formed by oxidizing a portion of the charge storage element or by forming a sacrificial layer over the charge storage element and oxidizing the sacrificial layer to a second top oxide.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: June 4, 2013
    Assignee: Spansion LLC
    Inventors: Chungho Lee, Hiroyuki Kinoshita, Kuo-Tung Chang, Rinji Sugino, Chi Chang, Huaqiang Wu
  • Patent number: 8330209
    Abstract: Memory devices having an increased effective channel length and/or improved TPD characteristics, and methods of making the memory devices are provided. The memory devices contain two or more memory cells on a semiconductor substrate and bit line dielectrics between the memory cells. The bit line dielectrics can extend into the semiconductor. The memory cell contains a charge trapping dielectric stack, a poly gate, a pair of pocket implant regions, and a pair of bit lines. The bit line can be formed by an implant process at a higher energy level and/or a higher concentration of dopants without suffering device short channel roll off issues because spacers at bit line sidewalls constrain the implant in narrower implant regions.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: December 11, 2012
    Assignee: Spansion LLC
    Inventors: Ning Cheng, Huaqiang Wu, Hiro Kinoshita, Jihwan Choi
  • Patent number: 8329598
    Abstract: Methods of forming a top oxide around a charge storage material layer of a memory cell and methods of improving quality of a top oxide around a charge storage material layer of a memory cell are provided. The method can involve providing a charge storage layer on a semiconductor substrate, a nitride layer on the charge storage layer, and a first poly layer on the nitride layer, and converting at least a portion of the nitride layer to a top oxide. By converting at least a portion of a nitride layer to a top oxide layer, the quality of the resultant top oxide layer can be improved.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: December 11, 2012
    Assignee: Spansion LLC
    Inventors: Chungho Lee, Kuo-Tung Chang, Hiroyuki Kinoshita, Huaqiang Wu, Fred Cheung
  • Publication number: 20110278660
    Abstract: Memory devices having improved TPD characteristics and methods of making the memory devices are provided. The memory devices contain two or more memory cells on a semiconductor substrate and bit line openings containing a bit line dielectric between the memory cells. The memory cell contains a charge storage layer and a first poly gate. The bit line opening extends into the semiconductor substrate. By containing the bit line dielectric in the bit line openings that extend into the semiconductor substrate, the memory device can improve the electrical isolation between memory cells, thereby preventing and/or mitigating TPD.
    Type: Application
    Filed: July 26, 2011
    Publication date: November 17, 2011
    Applicant: SPANSION LLC
    Inventors: Ning Cheng, K.T. Chang, Hiro Kinoshita, Chih-Yuh Yang, Lei Xue, Chungho Lee, Minghao Shen, Angela Hui, Huaqiang Wu
  • Publication number: 20110283349
    Abstract: The present invention discloses an implement method and device of a terminal call firewall. The method comprises: adding a call number into a blacklist list, when it is determined that the call number is not in the blacklist list stored and an address list and it is determined that a call duration is less than a set call duration threshold.
    Type: Application
    Filed: August 21, 2009
    Publication date: November 17, 2011
    Applicant: ZTE Corporation
    Inventor: Huaqiang Wu
  • Patent number: 8039891
    Abstract: Memory cells containing two split sub-lithographic charge storage nodes on a semiconductor substrate and methods for making the memory cells are provided. The methods can involve forming two split sub-lithographic charge storage nodes by using spacer formation techniques. By removing an exposed portion of a fist poly layer between sloping side surfaces or outer surfaces of spacers while leaving portions of the first poly layer protected by the spacers, the method can provide two split sub-lithographic first poly gates. Further, by removing an exposed portion of a charge storage layer between sloping side surfaces or outer surfaces of spacers, the method can provide two split, narrow portions of the charge storage layer, which subsequently form two split sub-lithographic charge storage nodes.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: October 18, 2011
    Assignee: Spansion LLC
    Inventors: Minghao Shen, Chungho Lee, Hiroyuki Kinoshita, Huaqiang Wu
  • Publication number: 20110237060
    Abstract: Methods of forming a top oxide around a charge storage material layer of a memory cell and methods of improving quality of a top oxide around a charge storage material layer of a memory cell are provided. The method can involve providing a charge storage layer on a semiconductor substrate, a nitride layer on the charge storage layer, and a first poly layer on the nitride layer, and converting at least a portion of the nitride layer to a top oxide. By converting at least a portion of a nitride layer to a top oxide layer, the quality of the resultant top oxide layer can be improved.
    Type: Application
    Filed: June 6, 2011
    Publication date: September 29, 2011
    Applicant: SPANSION LLC
    Inventors: Chungho Lee, Kuo-Tung Chang, Hiroyuki Kinoshita, Huaqiang Wu, Fred Cheung