Patents by Inventor Huiwen Xu

Huiwen Xu 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: 8237146
    Abstract: In a first aspect, a method of forming a memory cell is provided that includes (1) forming a metal-insulator-metal (MIM) stack, the MIM stack including (a) a first conductive carbon layer; (b) a low-hydrogen, silicon-containing carbon layer above the first conductive carbon layer; and (c) a second conductive carbon layer above the low-hydrogen, silicon-containing carbon layer; and (2) forming a steering element coupled to the MIM stack. Numerous other aspects are provided.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: August 7, 2012
    Assignee: SanDisk 3D LLC
    Inventors: Franz Kreupl, Jingyan Zhang, Huiwen Xu
  • Publication number: 20120135603
    Abstract: The embodiments generally relate to methods of making semiconductor devices, and more particularly, to methods for making semiconductor pillar structures and increasing array feature pattern density using selective or directional gap fill. The technique has application to a variety of materials and can be applied to making monolithic two or three-dimensional memory arrays.
    Type: Application
    Filed: February 6, 2012
    Publication date: May 31, 2012
    Inventors: Huiwen Xu, Yung-Tin Chen, Steven J. Radigan
  • Patent number: 8114765
    Abstract: The embodiments generally relate to methods of making semiconductor devices, and more particularly, to methods for making semiconductor pillar structures and increasing array feature pattern density using selective or directional gap fill. The technique has application to a variety of materials and can be applied to making monolithic two or three-dimensional memory arrays.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: February 14, 2012
    Assignee: SanDisk 3D LLC
    Inventors: Huiwen Xu, Yung-Tin Chen, Steven J. Radigan
  • Patent number: 8093123
    Abstract: Methods of forming memory cells are disclosed which include forming a pillar above a substrate, the pillar including a steering element and a memory element, and performing one or more etches vertically through the pillar to form multiple memory cells. Memory cells formed from such methods, as well as numerous other aspects are also disclosed.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: January 10, 2012
    Assignee: SanDisk 3D LLC
    Inventors: Huiwen Xu, Er-Xuan Ping
  • Publication number: 20110278529
    Abstract: In a first aspect, a method of forming a memory cell having a diamond like carbon (DLC) resistivity-switching material is provided that includes (1) forming a metal-insulator-metal (MIM) stack that includes (a) a first conductive layer; (b) a DLC switching layer above the first conductive layer; and (c) a second conductive layer above the DLC switching layer; (2) forming a compressive dielectric liner along a sidewall of the MIM stack; and (3) forming a steering element coupled to the MIM stack. Numerous other aspects are provided.
    Type: Application
    Filed: May 14, 2010
    Publication date: November 17, 2011
    Inventor: Huiwen Xu
  • Publication number: 20110254126
    Abstract: In a first aspect, a method of forming a metal-insulator-metal (“MIM”) stack is provided, the method including: (1) forming a dielectric material having an opening and a first conductive carbon layer within the opening; (2) forming a spacer in the opening; (3) forming a carbon-based switching material on a sidewall of the spacer; and (4) forming a second conductive carbon layer above the carbon-based switching material. A ratio of a cross sectional area of the opening in the dielectric material to a cross sectional area of the carbon-based switching material on the sidewall of the spacer is at least 5. Numerous other aspects are provided.
    Type: Application
    Filed: April 14, 2010
    Publication date: October 20, 2011
    Inventors: Franz Kreupl, Er-Xuan Ping, Jingyan Zhang, Huiwen Xu
  • Publication number: 20110204474
    Abstract: In a first aspect, a method of forming a memory cell is provided that includes (1) forming a metal-insulator-metal (MIM) stack, the MIM stack including (a) a first conductive carbon layer; (b) a low-hydrogen, silicon-containing carbon layer above the first conductive carbon layer; and (c) a second conductive carbon layer above the low-hydrogen, silicon-containing carbon layer; and (2) forming a steering element coupled to the MIM stack. Numerous other aspects are provided.
    Type: Application
    Filed: February 24, 2010
    Publication date: August 25, 2011
    Inventors: Franz Kreupl, Jingyan Zhang, Huiwen Xu
  • Publication number: 20110204313
    Abstract: A non-volatile memory device includes a plurality of pillars, where each of the plurality of pillars contains a non-volatile memory cell containing a steering element and a storage element and at least one of a top corner or a bottom corner of each of the plurality of pillars is rounded. A method of making non-volatile memory device includes forming a stack of device layers, and patterning the stack to form a plurality of pillars, where each of the plurality of pillars contains a non-volatile memory cell that contains a steering element and a storage element, and where at least one of top corner or bottom corner of each of the plurality of pillars is rounded.
    Type: Application
    Filed: May 4, 2011
    Publication date: August 25, 2011
    Inventors: Xiying CHEN, Huiwen XU, Chuan-bin PAN
  • Patent number: 7964442
    Abstract: The present invention generally provides a method for forming a dielectric barrier with lowered dielectric constant, improved etching resistivity and good barrier property. One embodiment provides a method for processing a semiconductor substrate comprising flowing a precursor to a processing chamber, wherein the precursor comprises silicon-carbon bonds and carbon-carbon bonds, and generating a low density plasma of the precursor in the processing chamber to form a dielectric barrier film having carbon-carbon bonds on the semiconductor substrate, wherein the at least a portion of carbon-carbon bonds in the precursor is preserved in the low density plasma and incorporated in the dielectric barrier film.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: June 21, 2011
    Assignee: Applied Materials, Inc.
    Inventors: Huiwen Xu, Yijun Liu, Li-Qun Xia, Derek R. Witty, Hichem M'Saad
  • Patent number: 7955981
    Abstract: A non-volatile memory device includes a plurality of pillars, where each of the plurality of pillars contains a non-volatile memory cell containing a steering element and a storage element and at least one of a top corner or a bottom corner of each of the plurality of pillars is rounded. A method of making non-volatile memory device includes forming a stack of device layers, and patterning the stack to form a plurality of pillars, where each of the plurality of pillars contains a non-volatile memory cell that contains a steering element and a storage element, and where at least one of top corner or bottom corner of each of the plurality of pillars is rounded.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: June 7, 2011
    Assignee: SanDisk 3D LLC
    Inventors: Xiying Chen, Huiwen Xu, Chuanbin Pan
  • Publication number: 20110095258
    Abstract: Memory cells, and methods of forming such memory cells, are provided that include a steering element coupled to a carbon-based reversible resistivity switching material that has an increased resistivity, and a switching current that is less than a maximum current capability of the steering element used to control current flow through the carbon-based reversible resistivity switching material. In particular embodiments, methods and apparatus in accordance with this invention form a steering element, such as a diode, having a first cross-sectional area, coupled to a reversible resistivity switching material, such as aC, having a region that has a second cross-sectional area smaller than the first cross-sectional area.
    Type: Application
    Filed: July 13, 2010
    Publication date: April 28, 2011
    Inventors: Huiwen Xu, Er-Xuan Ping, Xiying Costa, Thomas J. Kwon
  • Publication number: 20110095257
    Abstract: Memory cells, and methods of forming such memory cells, are provided that include a steering element coupled to a carbon-based reversible resistivity switching material that has an increased resistivity, and a switching current that is less than a maximum current capability of the steering element used to control current flow through the carbon-based reversible resistivity switching material. In particular embodiments, methods and apparatus in accordance with this invention form a steering element, such as a diode, having a first width, coupled to a reversible resistivity switching material, such as aC, having a second width smaller than the first width.
    Type: Application
    Filed: July 13, 2010
    Publication date: April 28, 2011
    Inventors: Huiwen Xu, Er-Xuan Ping, Xiying Costa
  • Publication number: 20110092077
    Abstract: Methods of processing films on substrates are provided. In one aspect, the methods comprise treating a patterned low dielectric constant film after a photoresist is removed form the film by depositing a thin layer comprising silicon, carbon, and optionally oxygen and/or nitrogen on the film. The thin layer provides a carbon-rich, hydrophobic surface for the patterned low dielectric constant film. The thin layer also protects the low dielectric constant film from subsequent wet cleaning processes and penetration by precursors for layers that are subsequently deposited on the low dielectric constant film.
    Type: Application
    Filed: December 22, 2010
    Publication date: April 21, 2011
    Inventors: HUIWEN XU, MEI-YEE SHEK, LI-QUN XIA, AMIR AL-BAYATI, DEREK WITTY, HICHEM M'SAAD
  • Publication number: 20100327254
    Abstract: A non-volatile memory device includes a plurality of pillars, where each of the plurality of pillars contains a non-volatile memory cell containing a steering element and a storage element and at least one of a top corner or a bottom corner of each of the plurality of pillars is rounded. A method of making non-volatile memory device includes forming a stack of device layers, and patterning the stack to form a plurality of pillars, where each of the plurality of pillars contains a non-volatile memory cell that contains a steering element and a storage element, and where at least one of top corner or bottom corner of each of the plurality of pillars is rounded.
    Type: Application
    Filed: June 30, 2009
    Publication date: December 30, 2010
    Inventors: Xiying Chen, Huiwen XU, Chuanbin PAN
  • Patent number: 7851384
    Abstract: Methods are provided for processing a substrate comprising a bilayer barrier film thereon. In one aspect, a method comprises depositing a first barrier layer, depositing a second barrier layer on the first barrier layer, depositing a dielectric layer on the bilayer barrier film formed by the first barrier layer and the second barrier layer, and ultraviolet curing the dielectric layer. In another aspect, a method comprises depositing a first barrier layer, depositing a second barrier layer on the first barrier layer, depositing a dielectric layer on the bilayer barrier film formed by the first barrier layer and the second barrier layer, and curing the dielectric layer with an electron beam treatment.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: December 14, 2010
    Assignee: Applied Materials, Inc.
    Inventors: Yijun Liu, Huiwen Xu, Li-Qun Xia, Chad Peterson, Hichem M'Saad
  • Patent number: 7830698
    Abstract: A nonvolatile memory cell includes a steering element located in series with a storage element. The storage element includes a carbon material and the memory cell includes a rewritable cell having multiple memory levels.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: November 9, 2010
    Assignee: SanDisk 3D LLC
    Inventors: Xiying Chen, Bing K. Yen, Dat Nguyen, Huiwen Xu, George Samachisa, Tanmay Kumar, Er-Xuan Ping
  • Publication number: 20100193916
    Abstract: The embodiments generally relate to methods of making semiconductor devices, and more particularly, to methods for making semiconductor pillar structures and increasing array feature pattern density using selective or directional gap fill. The technique has application to a variety of materials and can be applied to making monolithic two or three-dimensional memory arrays.
    Type: Application
    Filed: April 5, 2010
    Publication date: August 5, 2010
    Applicant: SanDisk 3D LLC
    Inventors: Huiwen Xu, Yung-Tin Chen, Steven J. Radigan
  • Publication number: 20100163824
    Abstract: In a first aspect, a method of forming a memory cell is provided that includes (1) forming a metal-insulator-metal (“MIM”) stack above a substrate, the MIM stack including a carbon-based switching material having a resistivity of at least 1×104 ohm-cm; and (2) forming a steering element coupled to the MIM stack. Numerous other aspects are provided.
    Type: Application
    Filed: December 30, 2009
    Publication date: July 1, 2010
    Inventors: Huiwen Xu, Xiying Chen, Er-Xuan Ping
  • Publication number: 20100108982
    Abstract: Methods in accordance with this invention form a microelectronic structure by forming a carbon nano-tube (“CNT”) layer, and forming a carbon layer (“carbon liner”) above the CNT layer, wherein the carbon liner comprises: (1) a first portion disposed above and in contact with the CNT layer; and/or (2) a second portion disposed in and/or around one or more carbon nano-tubes in the CNT layer. Numerous other aspects are provided.
    Type: Application
    Filed: October 29, 2009
    Publication date: May 6, 2010
    Applicant: SanDisk 3D LLC
    Inventors: Er-Xuan Ping, Huiwen Xu, April D. Schricker, Wipul Permsiri Jayasekara
  • Publication number: 20100102291
    Abstract: A method of forming a reversible resistance-switching metal-insulator-metal (“MIM”) stack is provided, the method including forming a first conducting layer comprising a degenerately doped semiconductor material, and forming a carbon-based reversible resistance-switching material above the first conducting layer. Other aspects are also provided.
    Type: Application
    Filed: October 22, 2009
    Publication date: April 29, 2010
    Applicant: SanDisk 3D LLC
    Inventor: Huiwen Xu