Patents by Inventor Mark Chang

Mark 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: 7166065
    Abstract: A jogging machine comprises a base, a jogging platform, a linear actuator mounted on the jogging platform, an urging frame disposed between the base and the jogging platform, and at least one pull rod. The linear actuator actuates the urging frame to urge the jogging platform to change its inclination. The jogging platform is capable of being folded along a fixed path due to the linking of the urging frame and the pull rod.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: January 23, 2007
    Inventor: Mark Chang
  • Publication number: 20060223305
    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: Application
    Filed: April 4, 2005
    Publication date: October 5, 2006
    Inventors: Phillip Jones, Mark Chang, Scott Bell
  • Publication number: 20060049826
    Abstract: An optical cross-connect switch comprises a base (216), a flap (211) and one or more electrically conductive landing pads (222) connected to the flap (211). The flap (211) has a bottom portion that is movably coupled to the base (216) such that the flap (211) is movable with respect to a plane of the base (216) from a first orientation to a second orientation. The one or more landing pads (222) are electrically isolated from the flap (211) and electrically coupled to be equipotential with a landing surface.
    Type: Application
    Filed: March 1, 2002
    Publication date: March 9, 2006
    Applicants: ONIX MICROSYSTEMS, ANALOG DEVICES, INC.
    Inventors: Michael Daneman, Franklin Wall, Behrang Behin, Murali Chaparala, Mark Chang, Scott Dalton, Timothy Beerling, Stephen Panyko, Meng-Hsiung Kiang, Boris Kobrin, Chuang-Chia Lin
  • Publication number: 20050092983
    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: Application
    Filed: November 3, 2003
    Publication date: May 5, 2005
    Inventors: Christopher Lyons, Mark Chang, Sergey Lopatin, Ramkumar Subramanian, Patrick Cheung, Minh Ngo, Jane Oglesby
  • Publication number: 20050045877
    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: Application
    Filed: September 28, 2004
    Publication date: March 3, 2005
    Inventors: Christopher Lyons, Ramkumar Subramanian, Mark Chang
  • Patent number: 6764929
    Abstract: A method and system for providing a contact hole between structures for a semiconductor device is disclosed. The method and system comprises etching a resist material on the semiconductor device to expose a surface of the structures; providing an implant to the surface of the structures; and removing the resist material from a gap between the structures. The method and system includes annealing the semiconductor device to cause the implant to adhere to the treated surface; and providing dielectric material within the gap. Finally, the method and system includes etching the contact hole in the gap between the structures. The contact hole can then be etched without damaging the structures. Accordingly, by providing an implant treated surface and then providing an anneal process the implant is bonded to the appropriate portion of the semiconductor structure.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: July 20, 2004
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Angela Hui, Chi Chang, Mark Chang
  • Publication number: 20040063548
    Abstract: A jogging machine comprises a base, a jogging platform, a linear actuator mounted on the jogging platform, an urging frame disposed between the base and the jogging platform, and at least one pull rod. The linear actuator actuates the urging frame to urge the jogging platform to change its inclination. The jogging platform is capable of being folded along a fixed path due to the linking of the urging frame and the pull rod.
    Type: Application
    Filed: September 15, 2003
    Publication date: April 1, 2004
    Inventor: Mark Chang
  • Patent number: 6638200
    Abstract: A jogging machine comprises a base, a jogging platform, a linear actuator mounted on the jogging platform, an urging frame disposed between the base and the jogging platform, and at least one pull rod. The linear actuator actuates the urging frame to urge the jogging platform to change its inclination. The jogging platform is capable of being folded along a fixed path due to the linking of the urging frame and the pull rod.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: October 28, 2003
    Inventor: Mark Chang
  • Patent number: 6515328
    Abstract: The use of chlorine and oxygen chemistry in a polysilicon etch environment provides a process to etch a plurality of silicon-based layers on a semiconductor substrate to an underlying oxide layer in a single step. The process is useful in the formation of gate structures wherein high selectivity to the underlying oxide layer thereby affords higher processing control over the formed gate structure.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: February 4, 2003
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Wenge Yang, Lewis Shen, Mark Chang
  • Publication number: 20020183169
    Abstract: A jogging machine comprises a base, a jogging platform, a linear actuator mounted on the jogging platform, an urging frame disposed between the base and the jogging platform, and at least one pull rod. The linear actuator actuates the urging frame to urge the jogging platform to change its inclination. The jogging platform is capable of being folded along a fixed path due to the linking of the urging frame and the pull rod.
    Type: Application
    Filed: May 29, 2001
    Publication date: December 5, 2002
    Inventor: Mark Chang
  • Patent number: 6486029
    Abstract: A process for fabricating a memory cell in a two-bit EEPROM device, the process includes forming an ONO layer overlying a semiconductor substrate, depositing a hard mask overlying the ONO layer, and patterning the hard mask. Preferably, the hard mask includes a material selected from the group consisting of tungsten, titanium, titanium nitride, polysilicon, silicon, silicon nitride, silicon oxi-nitride, and silicon rich nitride. In one preferred embodiment, the process further includes implanting the semiconductor substrate with a p-type dopant at an angle substantially normal to the principal surface of the semiconductor substrate and annealing the semiconductor substrate upon implanting the semiconductor substrate with a p-type dopant. In one preferred embodiment, the process further includes implanting the semiconductor substrate with an n-type dopant.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: November 26, 2002
    Assignee: Advanced Micro Devices, Inc.
    Inventors: David K. Foote, Bharath Rangarajan, Stephan K. Park, Fei Wang, Dawn M. Hopper, Jack Thomas, Mark Chang, Mark Ramsbey
  • Patent number: 6444539
    Abstract: A semiconductor apparatus and method for producing shallow trench isolation. The method includes the steps providing a semiconductor substrate member fabricated having a thin barrier oxide layer on which are fabricated a plurality of spaced apart silicon nitride pads. The regions between the spaced apart nitride pads delineate U-shaped regions for forming shallow isolation trenches and are layered with silicon oxide and polysilicon. The U-shaped regions provide a buffer region of oxide and polysilicon material adjacent opposing silicon nitride pads that prevent erosion of the nitride during etch formation of the isolation trench. The polysilicon is further etched to form a wider, second U-shaped region having sloped sidewalls that provide opposing spacer-forming buffer material that facilitates forming a V-shaped isolation trench region into the semiconductor substrate member a predetermined depth without eroding the silicon nitride pads.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: September 3, 2002
    Assignees: Advanced Micro Devices, Inc., Fujitsu Limited
    Inventors: Yu Sun, Angela T. Hui, Yue-Song He, Tatsuya Kajita, Mark Chang, Chi Chang, Hung-Sheng Chen
  • Patent number: 6444530
    Abstract: A method of forming a contact in a flash memory device utilizes a local interconnect process technique. The local interconnect process technique allows the contact to butt against or overlap a stacked gate associated with the memory cell. The contact can include tungsten. The stacked gate is covered by a barrier layer which also covers the insulative spacers.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: September 3, 2002
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Hung-Sheng Chen, Unsoon Kim, Yu Sun, Chi Chang, Mark Ramsbey, Mark Randolph, Tatsuya Kajita, Angela Hui, Fei Wang, Mark Chang
  • Patent number: 6436766
    Abstract: A process for fabricating a memory cell in a two-bit EEPROM device including forming an ONO layer overlying a semiconductor substrate, depositing a hard mask overlying the ONO layer, and patterning the hard mask. The hard mask is preferably made from polysilicon or silicon. The process further includes doping the semiconductor substrate with boron causing p-type regions to form in the semiconductor substrate, and doping the semiconductor substrate with n-type dopants, such as arsenic, causing n-type regions to form in the semiconductor substrate. The exposed ONO layer is then etched to expose part of the semiconductor substrate, and a bit-line oxide region is formed overlying the semiconductor substrate. The hard mask is then removed, preferably using a plasma etch process.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: August 20, 2002
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Bharath Rangarajan, David K. Foote, Fei Wang, Dawn M. Hopper, Stephen K. Park, Jack Thomas, Mark Chang, Mark Ramsbey
  • Patent number: 6399446
    Abstract: A process for fabricating a memory cell in a two-bit EEPROM device including forming an ONO layer overlying a semiconductor substrate, depositing a hard mask overlying the ONO layer, and patterning the hard mask. The hard mask is made from tungsten, titanium, or titanium nitride. The process further includes doping the semiconductor substrate with boron causing p-type regions to form in the semiconductor substrate, and doping the semiconductor substrate with n-type dopants, such as arsenic, causing n-type regions to form in the semiconductor substrate. The exposed ONO layer is then etched to expose part of the semiconductor substrate, and a bit-line oxide region is formed overlying the semiconductor substrate. The hard mask is then stripped, preferably using an H2O2 solution.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: June 4, 2002
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Bharath Rangarajan, David K. Foote, Fei Wang, Dawn M. Hopper, Stephen K. Park, Jack Thomas, Mark Chang, Mark Ramsbey
  • Patent number: 6232646
    Abstract: A semiconductor apparatus and method for producing shallow trench isolation. The method includes the steps providing a semiconductor substrate member fabricated having a thin barrier oxide layer on which are fabricated a plurality of spaced apart silicon nitride pads. The regions between the spaced apart nitride pads delineate U-shaped regions for forming shallow isolation trenches and are layered with silicon oxide and polysilicon. The U-shaped regions provide a buffer region of oxide and polysilicon material adjacent opposing silicon nitride pads that prevent erosion of the nitride during etch formation of the isolation trench. The polysilicon is further etched to form a wider, second U-shaped region having sloped sidewalls that provide opposing spacer-forming buffer material that facilitates forming a V-shaped isolation trench region into the semiconductor substrate member a predetermined depth without eroding the silicon nitride pads.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: May 15, 2001
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Yu Sun, Angela T. Hui, Yue-Song He, Tatsuya Kajita, Mark Chang, Chi Chang, Hung-Sheng Chen
  • Patent number: 5907781
    Abstract: A method of forming a contact in a flash memory device utilizes a local interconnect process technique. The local interconnect process technique allows the contact to butt against or overlap a stacked gate associated with the memory cell. The contact can include tungsten. The stacked gate is covered by a barrier layer which also covers the insulative spacers.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: May 25, 1999
    Assignees: Advanced Micro Devices, Inc., Fujitsu Limited, Fujitsu AMD Semiconductor Limited
    Inventors: Hung-Sheng Chen, Unsoon Kim, Yu Sun, Chi Chang, Mark Ramsbey, Mark Randolph, Tatsuya Kajita, Angela Hui, Fei Wang, Mark Chang
  • Patent number: 5688717
    Abstract: A Ti.sub.x N.sub.y layer, not necessarily stoichiometric, is interposed between a titanium or aluminum interconnect layer to improve adhesion and prevent re-entrant undercutting and lifting of the interconnect layer during the process of patterning and plasma etching to form interconnect lines on a substrate, such as an oxide.
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: November 18, 1997
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Lewis Shen, Sheshadri Ramaswami, Mark Chang, Robin Cheung
  • Patent number: 5675186
    Abstract: A Ti.sub.x N.sub.y layer, not necessarily stoichiometric, is interposed between a titanium or aluminum interconnect layer to improve adhesion and prevent re-entrant undercutting and lifting of the interconnect layer during the process of patterning and plasma etching to form interconnect lines on a substrate, such as an oxide.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: October 7, 1997
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Lewis Shen, Sheshadri Ramaswami, Mark Chang, Robin Cheung
  • Patent number: 5635423
    Abstract: A semiconductor device containing an interconnection structure having a reduced interwiring spacing is produced by a modified dual damascene process. In one embodiment, an opening for a via is initially formed in a second insulative layer above a first insulative layer with an etch stop layer therebetween. A larger opening for a trench is then formed in the second insulative layer while simultaneously extending the via opening through the etch stop layer and first insulative layer. The trench and via are then simultaneously filled with conductive material.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: June 3, 1997
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Richard J. Huang, Angela Hui, Robin Cheung, Mark Chang, Ming-Ren Lin