Patents by Inventor Mark S. Chang

Mark S. Chang 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: 8815727
    Abstract: A method for forming an integrated circuit system is provided including forming a semi-conducting layer over a substrate, forming a spacer stack having a gap filler adjacent to the semi-conducting layer and a inter-layer dielectric over the gap filler, forming a transition layer having a recess over the semi-conducting layer and adjacent to the spacer stack, and forming a metal layer in the recess.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: August 26, 2014
    Assignees: Advanced Micro Devices, Inc., Spansion LLC
    Inventors: Angela T. Hui, Mark S. Chang, Kuo-Tung Chang, Scott A. Bell
  • Patent number: 8507969
    Abstract: A method and system for providing at least one contact in a flash memory device is disclosed. The flash memory device includes a plurality of gate stacks and at lease one component including a polysilicon layer as a top surface. The method and system further include forming a silicide on the top surface of the polysilicon layer and providing an insulating layer covering the plurality of gate stacks, the at least one component and the silicide. The method and system also include etching the insulating layer to provide at least one contact hole. The insulating layer etching step uses the silicide as an etch stop layer to ensure that the insulating etching step does not etch through the polysilicon layer. The method and system also include filling the at least one contact hole with a conductor.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: August 13, 2013
    Assignee: Spansion LLC
    Inventors: Mark S. Chang, Hao Fang, King Wai Kelwin Ko
  • Patent number: 8329530
    Abstract: A method and system for providing at least one contact in a flash memory device is disclosed. The flash memory device includes a plurality of gate stacks and at lease one component including a polysilicon layer as a top surface. The method and system further include forming a silicide on the top surface of the polysilicon layer and providing an insulating layer covering the plurality of gate stacks, the at least one component and the silicide. The method and system also include etching the insulating layer to provide at least one contact hole. The insulating layer etching step uses the silicide as an etch stop layer to ensure that the insulating etching step does not etch through the polysilicon layer. The method and system also include filling the at least one contact hole with a conductor.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: December 11, 2012
    Assignee: Spansion LLC
    Inventors: Mark S. Chang, Hao Fang, King Wai Kelwin Ko
  • Publication number: 20120302017
    Abstract: A method and system for providing at least one contact in a flash memory device is disclosed. The flash memory device includes a plurality of gate stacks and at lease one component including a polysilicon layer as a top surface. The method and system further include forming a silicide on the top surface of the polysilicon layer and providing an insulating layer covering the plurality of gate stacks, the at least one component and the silicide. The method and system also include etching the insulating layer to provide at least one contact hole. The insulating layer etching step uses the silicide as an etch stop layer to ensure that the insulating etching step does not etch through the polysilicon layer. The method and system also include filling the at least one contact hole with a conductor.
    Type: Application
    Filed: August 3, 2012
    Publication date: November 29, 2012
    Applicant: Spansion LLC
    Inventors: Mark S. CHANG, Hao Fang, King Wai Kelwin Ko
  • Patent number: 8283718
    Abstract: A method for forming an integrated circuit system is provided including forming a semi-conducting layer over a substrate, forming a spacer stack having a gap filler adjacent to the semi-conducting layer and a inter-layer dielectric over the gap filler, forming a transition layer having a recess over the semi-conducting layer and adjacent to the spacer stack, and forming a metal layer in the recess.
    Type: Grant
    Filed: December 16, 2006
    Date of Patent: October 9, 2012
    Assignees: Spansion LLC, Advanced Micro Devices, Inc.
    Inventors: Angela T. Hui, Mark S. Chang, Kuo-Tung Chang, Scott A. Bell
  • Publication number: 20120217563
    Abstract: A method and system for providing at least one contact in a flash memory device is disclosed. The flash memory device includes a plurality of gate stacks and at lease one component including a polysilicon layer as a top surface. The method and system further include forming a silicide on the top surface of the polysilicon layer and providing an insulating layer covering the plurality of gate stacks, the at least one component and the silicide. The method and system also include etching the insulating layer to provide at least one contact hole. The insulating layer etching step uses the silicide as an etch stop layer to ensure that the insulating etching step does not etch through the polysilicon layer. The method and system also include filling the at least one contact hole with a conductor.
    Type: Application
    Filed: May 7, 2012
    Publication date: August 30, 2012
    Inventors: Mark S. CHANG, Hao Fang, King Wai Kelwin
  • Patent number: 8183619
    Abstract: A method and system for providing at least one contact in a flash memory device is disclosed. The flash memory device includes a plurality of gate stacks and at lease one component including a polysilicon layer as a top surface. The method and system further include forming a silicide on the top surface of the polysilicon layer and providing an insulating layer covering the plurality of gate stacks, the at least one component and the silicide. The method and system also include etching the insulating layer to provide at least one contact hole. The insulating layer etching step uses the silicide as an etch stop layer to ensure that the insulating etching step does not etch through the polysilicon layer. The method and system also include filling the at least one contact hole with a conductor.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: May 22, 2012
    Inventors: Mark S. Chang, Hao Fang, King Wai Kelwin Ko
  • Patent number: 7439141
    Abstract: A method for performing shallow trench isolation during semiconductor fabrication that improves trench corner rounding is disclosed. The method includes etching trenches into a silicon substrate between active regions, and performing a double liner oxidation process on the trenches. The method further includes performing a double sacrificial oxidation process on the active regions, wherein corners of the trenches are substantially rounded by the four oxidation processes.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: October 21, 2008
    Assignee: Spansion, LLC
    Inventors: Unsoon Kim, Yu Sun, Hiroyuki Kinoshita, Kuo-Tung Chang, Harpreet K. Sachar, Mark S. Chang
  • Publication number: 20080142873
    Abstract: A method for forming an integrated circuit system is provided including forming a semi-conducting layer over a substrate, forming a spacer stack having a gap filler adjacent to the semi-conducting layer and a inter-layer dielectric over the gap filler, forming a transition layer having a recess over the semi-conducting layer and adjacent to the spacer stack, and forming a metal layer in the recess.
    Type: Application
    Filed: December 16, 2006
    Publication date: June 19, 2008
    Applicants: SPANSION LLC, ADVANCED MICRO DEVICES, INC.
    Inventors: Angela T. Hui, Mark S. Chang, Kuo-Tung Chang, Scott A. Bell
  • Patent number: 7374654
    Abstract: A method of making an organic memory cell which comprises two electrodes with a controllably conductive media between the two electrodes is disclosed. The present invention involves providing a dielectric layer having formed therein one or more first electrode pads; removing a portion of the first electrode pad to form a recessed area on top of the pads and in the dielectric layer using reverse electroplating; forming a controllably conductive media over the first electrode pad in the recessed area; and forming a second electrode over the conductive media. The controllably conductive media contains an organic semiconductor layer and a passive layer.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: May 20, 2008
    Assignee: Spansion LLC
    Inventors: Mark S. Chang, Sergey D. Lopatin, Ramkumar Subramanian
  • Patent number: 7361588
    Abstract: A method of reducing critical dimensions of a feature in a anti-reflective coating layer structure can utilize a polymerizing agent. The anti-reflective coating structure can be utilized to form various integrated circuit structures. The anti-reflective coating can be utilized to form gate stacks comprised of polysilicon and a dielectric layer, conductive lines, or other IC structure. The polymerizing agent can include carbon, hydrogen and fluorine.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: April 22, 2008
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Phillip L. Jones, Mark S. Chang, Scott A. Bell
  • Patent number: 7015504
    Abstract: Systems and methodologies are disclosed for increasing the number of memory cells associated with a lithographic feature. The systems comprise memory elements that are formed on the sidewalls of the lithographic feature by employing various depositing and etching processes. The side wall memory cells can have a bit line of the wafer as the first electrode and operate with a second formed electrode to activate a portion of an organic matter that is formed there between.
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: March 21, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Christopher F. Lyons, Mark S. Chang, Sergey D. Lopatin, Ramkumar Subramanian, Patrick K. Cheung, Minh V. Ngo, Jane V. Oglesby
  • Patent number: 6979619
    Abstract: In a first aspect of the present invention, a method of fabricating a flash memory device is disclosed. The method comprises the steps of providing a portion of a dual gate oxide in a periphery area of the memory device and then simultaneously providing a dual gate oxide in a core area of the memory device and completing the dual gate oxide in the periphery area. Finally, a nitridation process is provided in both the core and periphery areas subsequent to the previous steps. In a second aspect of the present invention, a flash memory device is disclosed. The flash memory device comprises core area having a plurality of memory transistors comprising an oxide layer, a first poly layer, an interpoly dielectric layer, and a second poly layer. The flash memory device further comprises a periphery area having a plurality of transistors comprising an oxide layer, a portion of the first poly layer, and the second poly layer.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: December 27, 2005
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Hao Fang, Yue-Song He, Mark S. Chang, Kent K. Chang
  • Patent number: 6900488
    Abstract: The present invention provides a multi-cell organic memory device that can operate as a non-volatile memory device having a plurality of multi-cell structures constructed within the memory device. A lower electrode can be formed, wherein one or more passive layers are formed on top of the lower electrode. An Inter Layer Dielectric (ILD) is formed above the passive layers and lower electrode, whereby a via or other type relief is created within the ILD and an organic semiconductor material is then utilized to partially fill the via above the passive layer. The portions of the via that are not filled with organic material are filled with dielectric material, thus forming a multi-dimensional memory structure above the passive layer or layers and the lower electrode. One or more top electrodes are then added above the memory structure, whereby distinctive memory cells are created within the organic portions of the memory structure and activated (e.g.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: May 31, 2005
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Sergey D. Lopatin, Mark S. Chang, Minh Van Ngo, Patrick K. Cheung
  • Patent number: 6878961
    Abstract: A method of making organic memory cells made of two electrodes with a controllably conductive media between the two electrodes is disclosed. The controllably conductive media contains an organic semiconductor layer that contains a photosensitive compound. The organic semiconductor layer is formed into memory cells using patterning techniques.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: April 12, 2005
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Christopher F. Lyons, Ramkumar Subramanian, Mark S. Chang
  • Patent number: 6864556
    Abstract: A bottom anti-reflective coating comprising an organic polymer layer having substantially no nitrogen and a low compressive stress in relation to a polysilicon layer is employed as the lower layer of a bi-layer antireflective coating/hardmask structure to reduce deformation of a pattern to be formed in a patternable layer. The organic polymer layer is substantially transparent to visible radiation, enabling better detection of alignment marks during a semiconductor device fabrication process and improving overlay accuracy. The organic polymer layer provides excellent step coverage and may be advantageously used in the fabrication of structures such as FinFETs.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: March 8, 2005
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Lu You, Marina V. Plat, Chih Yuh Yang, Scott A. Bell, Richard J. Huang, Christopher F. Lyons, Mark S. Chang, Marilyn I. Wright
  • Patent number: 6836398
    Abstract: The present invention provides systems and methods that facilitate formation of semiconductor devices via planarization processes. The present invention utilizes dishing effects that typically occur during a chemical mechanical planarization (CMP) process. A reducing CMP process is performed on a semiconductor device in order to form a passive layer instead of performing a first CMP, followed by a deposition and a second CMP to form a passive layer. The reducing CMP process utilizes a slurry that includes a reducing chemistry that forms the passive layer in a dish region of an electrode. Thus, the passive layer is formed in conjunction with the reducing CMP process utilized for forming the electrode.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: December 28, 2004
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Ramkumar Subramanian, Jane V. Oglesby, Minh Van Ngo, Mark S. Chang, Sergey D. Lopatin, Angela T. Hui, Christopher F. Lyons, Patrick K. Cheung, Ashok M. Khathuria
  • Patent number: 6825060
    Abstract: A method of making organic memory cells made of two electrodes with a controllably conductive media between the two electrodes is disclosed. The controllably conductive media contains an organic semiconductor layer that contains a photosensitive compound. The organic semiconductor layer is formed into memory cells using patterning techniques.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: November 30, 2004
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Christopher F. Lyons, Ramkumar Subramanian, Mark S. Chang
  • Patent number: 6815292
    Abstract: A flash memory array having improved core field isolation in select gate regions via shallow trench isolation and field isolation implant after liner oxidation is disclosed. The flash memory array includes a core area and a periphery area, wherein the core area further includes a select gate region. The method of fabricating the flash memory array begins by patterning a layer of nitride over a substrate in active device locations. After the nitride is patterned, a silicon trench etch is performed to form trenches. After forming the trenches, a layer of liner oxide is grown in the trenches. Then, a field implant is performed in both the core area and periphery area to provide field isolation regions for the flash memory array with. Thereafter, poly1 is patterned in the core area to form floating gate and select word-lines.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: November 9, 2004
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Hao Fang, Mark S. Chang
  • Patent number: 6812077
    Abstract: Patterning of a gate line is terminated prior to etching completely through the conductive layer from which it is patterned. Surfaces of the conductive layer are then reacted in a reactive atmosphere, and the reacted surfaces are removed, creating a narrow gate line. The protection provided by the remaining portion of the conductive layer during reaction protects the lower corners of the patterned feature from undercutting growth of reacted material. Alternatively, a gate line is patterned from a multi-layered conductive structure that includes a lower conductive layer and an upper conductive layer that exhibits higher reactivity in a reactive atmosphere than the lower layer. The upper layer is patterned and then the structure is reacted in the reactive atmosphere. Reacted portions of the upper layer are then removed and the lower layer is patterned in a self-aligned manner to complete the formation of a gate line and gate insulator.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: November 2, 2004
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Darin Chan, Douglas J. Bonser, Mark S. Chang