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: 8815727Abstract: 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: GrantFiled: October 4, 2012Date of Patent: August 26, 2014Assignees: Advanced Micro Devices, Inc., Spansion LLCInventors: Angela T. Hui, Mark S. Chang, Kuo-Tung Chang, Scott A. Bell
-
Patent number: 8507969Abstract: 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: GrantFiled: May 7, 2012Date of Patent: August 13, 2013Assignee: Spansion LLCInventors: Mark S. Chang, Hao Fang, King Wai Kelwin Ko
-
Patent number: 8329530Abstract: 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: GrantFiled: August 3, 2012Date of Patent: December 11, 2012Assignee: Spansion LLCInventors: Mark S. Chang, Hao Fang, King Wai Kelwin Ko
-
Publication number: 20120302017Abstract: 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: ApplicationFiled: August 3, 2012Publication date: November 29, 2012Applicant: Spansion LLCInventors: Mark S. CHANG, Hao Fang, King Wai Kelwin Ko
-
Patent number: 8283718Abstract: 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: GrantFiled: December 16, 2006Date of Patent: October 9, 2012Assignees: Spansion LLC, Advanced Micro Devices, Inc.Inventors: Angela T. Hui, Mark S. Chang, Kuo-Tung Chang, Scott A. Bell
-
Publication number: 20120217563Abstract: 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: ApplicationFiled: May 7, 2012Publication date: August 30, 2012Inventors: Mark S. CHANG, Hao Fang, King Wai Kelwin
-
Patent number: 8183619Abstract: 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: GrantFiled: March 30, 2000Date of Patent: May 22, 2012Inventors: Mark S. Chang, Hao Fang, King Wai Kelwin Ko
-
Patent number: 7439141Abstract: 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: GrantFiled: October 22, 2002Date of Patent: October 21, 2008Assignee: Spansion, LLCInventors: Unsoon Kim, Yu Sun, Hiroyuki Kinoshita, Kuo-Tung Chang, Harpreet K. Sachar, Mark S. Chang
-
Publication number: 20080142873Abstract: 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: ApplicationFiled: December 16, 2006Publication date: June 19, 2008Applicants: SPANSION LLC, ADVANCED MICRO DEVICES, INC.Inventors: Angela T. Hui, Mark S. Chang, Kuo-Tung Chang, Scott A. Bell
-
Patent number: 7374654Abstract: 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: GrantFiled: November 1, 2004Date of Patent: May 20, 2008Assignee: Spansion LLCInventors: Mark S. Chang, Sergey D. Lopatin, Ramkumar Subramanian
-
Patent number: 7361588Abstract: 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: GrantFiled: April 4, 2005Date of Patent: April 22, 2008Assignee: Advanced Micro Devices, Inc.Inventors: Phillip L. Jones, Mark S. Chang, Scott A. Bell
-
Patent number: 7015504Abstract: 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: GrantFiled: November 3, 2003Date of Patent: March 21, 2006Assignee: 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: 6979619Abstract: 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: GrantFiled: August 28, 2001Date of Patent: December 27, 2005Assignee: Advanced Micro Devices, Inc.Inventors: Hao Fang, Yue-Song He, Mark S. Chang, Kent K. Chang
-
Patent number: 6900488Abstract: 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: GrantFiled: October 31, 2002Date of Patent: May 31, 2005Assignee: Advanced Micro Devices, Inc.Inventors: Sergey D. Lopatin, Mark S. Chang, Minh Van Ngo, Patrick K. Cheung
-
Patent number: 6878961Abstract: 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: GrantFiled: September 28, 2004Date of Patent: April 12, 2005Assignee: Advanced Micro Devices, Inc.Inventors: Christopher F. Lyons, Ramkumar Subramanian, Mark S. Chang
-
Patent number: 6864556Abstract: 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: GrantFiled: December 31, 2002Date of Patent: March 8, 2005Assignee: 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: 6836398Abstract: 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: GrantFiled: October 31, 2002Date of Patent: December 28, 2004Assignee: 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: 6825060Abstract: 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: GrantFiled: April 2, 2003Date of Patent: November 30, 2004Assignee: Advanced Micro Devices, Inc.Inventors: Christopher F. Lyons, Ramkumar Subramanian, Mark S. Chang
-
Patent number: 6815292Abstract: 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: GrantFiled: September 27, 2002Date of Patent: November 9, 2004Assignee: Advanced Micro Devices, Inc.Inventors: Hao Fang, Mark S. Chang
-
Patent number: 6812077Abstract: 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: GrantFiled: November 19, 2002Date of Patent: November 2, 2004Assignee: Advanced Micro Devices, Inc.Inventors: Darin Chan, Douglas J. Bonser, Mark S. Chang