Patents by Inventor Francis Ko

Francis Ko 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: 9037279
    Abstract: A first embodiment is a method for semiconductor process control comprising clustering processing tools of a processing stage into a tool cluster based on processing data and forming a prediction model for processing a semiconductor wafer based on the tool cluster. A second embodiment is a method for semiconductor process control comprising providing cluster routes between first stage tool clusters and second stage tool clusters, assigning a comparative optimization ranking to each cluster route, and scheduling processing of wafers. The comparative optimization ranking identifies comparatively which cluster routes provide for high wafer processing uniformity.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: May 19, 2015
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Francis Ko, Tzu-yu Wang, Kewei Zuo, Henry Lo, Jean Wang, Chih-Wei Lai
  • Patent number: 8716867
    Abstract: A method of forming a device includes printing conductive patterns on a dielectric sheet to form a pre-ink-printed sheet, and bonding the pre-ink-printed sheet onto a side of a substrate. The conductive feature includes a through-substrate via extending from a first major side of the substrate to a second major side of the substrate opposite the first major side. A conductive paste is then applied to electrically couple conductive patterns to a conductive feature in the substrate.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: May 6, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Francis Ko, Chi-Chun Hsieh, Shang-Yun Hou, Wen-Chih Chiou, Shin-Puu Jeng, Chen-Hua Yu
  • Patent number: 8682466
    Abstract: A method to enable wafer result prediction includes collecting manufacturing data from various semiconductor manufacturing tools and metrology tools; choosing key parameters using an autokey method based on the manufacturing data; building a virtual metrology based on the key parameters; and predicting wafer results using the virtual metrology.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: March 25, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Francis Ko, Chih-Wei Lai, Kewei Zuo, Henry Lo, Jean Wang, Ping-Hsu Chen, Chun-Hsien Lim, Chen-Hua Yu
  • Patent number: 8433434
    Abstract: Embodiments of the present invention relate to a method for a near non-adaptive virtual metrology for wafer processing control. In accordance with an embodiment of the present invention, a method for processing control comprises diagnosing a chamber of a processing tool that processes a wafer to identify a key chamber parameter, and controlling the chamber based on the key chamber parameter if the key chamber parameter can be controlled, or compensating a prediction model by changing to a secondary prediction model if the key chamber parameter cannot be sufficiently controlled.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: April 30, 2013
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Amy Wang, Chen-Hua Yu, Jean Wang, Henry Lo, Francis Ko, Chih-Wei Lai, Kewei Zuo
  • Patent number: 8409993
    Abstract: A system and method for controlling resistivity uniformity in a Copper trench structure by controlling the CMP process is provided. A preferred embodiment comprises a system and a method in which a plurality of CMP process recipes may be created comprising at least a slurry arm position. A set of metrological data for at least one layer of the semiconductor substrate may be estimated, and an optimum CMP process recipe may be selected based on the set of metrological data. The optimum CMP process recipe may be implemented on the semiconductor substrate.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: April 2, 2013
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Francis Ko, Chun-Hsien Lin, Jean Wang, Chih-Wei Lai, Ping-Hsu Chen, Henry Lo
  • Patent number: 8145337
    Abstract: A method to enable wafer result prediction from a batch processing tool, includes collecting manufacturing data from a batch of wafers processed in batch in the batch processing tool, to form a batch processing result; defining a degree of freedom of the batch processing result based on the manufacturing data; and performing an optimal curve fitting by trial and error for an optimal function model of the batch processing result based on the batch processing result.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: March 27, 2012
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chun-Hsien Lin, Amy Wang, Francis Ko, Jean Wang
  • Publication number: 20110277655
    Abstract: A method of forming a device includes printing conductive patterns on a dielectric sheet to form a pre-ink-printed sheet, and bonding the pre-ink-printed sheet onto a side of a substrate. The conductive feature includes a through-substrate via extending from a first major side of the substrate to a second major side of the substrate opposite the first major side. A conductive paste is then applied to electrically couple conductive patterns to a conductive feature in the substrate.
    Type: Application
    Filed: May 12, 2010
    Publication date: November 17, 2011
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Francis Ko, Chi-Chun Hsieh, Shang-Yun Hou, Wen-Chih Chiou, Shin-Puu Jeng, Chen-Hua Yu
  • Patent number: 7974728
    Abstract: A system, method, and computer readable medium for extracting a key process parameter correlative to a selected device parameter are provided. In an embodiment, the key process parameter is determined using a gene map analysis. The gene map analysis includes grouping highly correlative process parameter and determining the correlation of a group to the selected device parameter. In an embodiment, the groups having greatest correlation to the selected device parameter are displayed in a correlation matrix and/or a gene map.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: July 5, 2011
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chun-Hsien Lin, Francis Ko, Kewei Zuo, Henry Lo, Jean Wang
  • Publication number: 20110060441
    Abstract: A first embodiment is a method for semiconductor process control comprising clustering processing tools of a processing stage into a tool cluster based on processing data and forming a prediction model for processing a semiconductor wafer based on the tool cluster. A second embodiment is a method for semiconductor process control comprising providing cluster routes between first stage tool clusters and second stage tool clusters, assigning a comparative optimization ranking to each cluster route, and scheduling processing of wafers. The comparative optimization ranking identifies comparatively which cluster routes provide for high wafer processing uniformity.
    Type: Application
    Filed: July 7, 2010
    Publication date: March 10, 2011
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Francis Ko, Tzu-Yu Wang, Kewei Zuo, Henry Lo, Jean Wang, Chih-Wei Lai
  • Publication number: 20110009998
    Abstract: Embodiments of the present invention relate to a method for a near non-adaptive virtual metrology for wafer processing control. In accordance with an embodiment of the present invention, a method for processing control comprises diagnosing a chamber of a processing tool that processes a wafer to identify a key chamber parameter, and controlling the chamber based on the key chamber parameter if the key chamber parameter can be controlled, or compensating a prediction model by changing to a secondary prediction model if the key chamber parameter cannot be sufficiently controlled.
    Type: Application
    Filed: April 23, 2010
    Publication date: January 13, 2011
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Amy Wang, Chen-Hua Yu, Jean Wang, Henry Lo, Francis Ko, Chih-Wei Lai, Kewei Zuo
  • Patent number: 7851234
    Abstract: A method is disclosed for controlling the sheet resistance of copper trenches formed on semiconductor wafers. The method includes forming a plurality of copper-filled trenches on a wafer, measuring the sheet resistance of each of the plurality of copper-filled trenches, and comparing the measured sheet resistance values to a predetermined sheet resistance value. Photolithography steps performed on subsequent wafers are adjusted according to a difference between the measured sheet resistance values and the predetermined value. In one embodiment, this adjustment takes the form of adjusting a photolithographic extension exposure energy to thereby adjust the cross-section of the resulting trenches.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: December 14, 2010
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Francis Ko, Jean Wang, Henry Lo, Chi-Chun Hsieh, Amy Wang
  • Patent number: 7767471
    Abstract: A method for improving within-wafer uniformity is provided. The method includes forming an electrical component by a first process step and a second process step, wherein the electrical component has a target electrical parameter. The method includes providing a first plurality of production tools for performing the first process step; providing a second plurality of production tools for performing the second process step; providing a wafer; performing the first process step on the wafer using one of the first plurality of production tools; and selecting a first route including a first production tool from the second plurality of production tools. A within-wafer uniformity of the target electrical parameter on the wafer manufactured by the first route is greater than a second route including a second production tool in the second plurality of production tools.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: August 3, 2010
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Jean Wang, Francis Ko, Henry Lo, Chi-Chun Hsieh, Amy Wang, Chih-Wei Lai, Chun-Hsien Lin
  • Patent number: 7642100
    Abstract: A semiconductor processing method includes processing a first substrate while detecting at least one first processing parameter value in a first apparatus. The first processing parameter is analyzed, thereby yielding at least one first predicted parameter value. The first predicted parameter value is compared with a first pre-defined parameter value, thereby yielding at least one first comparison result. A first recipe is applied corresponding to the first comparison result for processing a second substrate in the first apparatus.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: January 5, 2010
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chen-Hua Yu, Lawrance Sheu, Yi-Li Hsiao, Francis Ko
  • Patent number: 7634325
    Abstract: A method of monitoring uniformity of a wafer is provided. A wafer parameter is selected. Manufacturing data is collected. The manufacturing data includes measurements of the selected wafer parameter. An average offset profile of the wafer parameter for a first and second wafer is determined using the manufacturing data. The first and second wafer are associated with a product type and were processed by a processing tool. An offset profile for a third wafer is predicted for a wafer using the average offset profile. The third wafer is associated with the product type and was processed by the processing tool.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: December 15, 2009
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Jean Wang, Francis Ko, Ping-Hsu Chen, Henry Lo, Chih-Wei Lai
  • Publication number: 20090142860
    Abstract: A method is disclosed for controlling the sheet resistance of copper trenches formed on semiconductor wafers. The method includes forming a plurality of copper-filled trenches on a wafer, measuring the sheet resistance of each of the plurality of copper-filled trenches, and comparing the measured sheet resistance values to a predetermined sheet resistance value. Photolithography steps performed on subsequent wafers are adjusted according to a difference between the measured sheet resistance values and the predetermined value. In one embodiment, this adjustment takes the form of adjusting a photolithographic extension exposure energy to thereby adjust the cross-section of the resulting trenches.
    Type: Application
    Filed: November 29, 2007
    Publication date: June 4, 2009
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Francis Ko, Jean Wang, Henry Lo, Chi-Chun Hsieh, Amy Wang
  • Publication number: 20090035883
    Abstract: A method for improving within-wafer uniformity is provided. The method includes forming an electrical component by a first process step and a second process step, wherein the electrical component has a target electrical parameter. The method includes providing a first plurality of production tools for performing the first process step; providing a second plurality of production tools for performing the second process step; providing a wafer; performing the first process step on the wafer using one of the first plurality of production tools; and selecting a first route including a first production tool from the second plurality of production tools. A within-wafer uniformity of the target electrical parameter on the wafer manufactured by the first route is greater than a second route including a second production tool in the second plurality of production tools.
    Type: Application
    Filed: July 30, 2007
    Publication date: February 5, 2009
    Inventors: Jean Wang, Francis Ko, Henry Lo, Chi-Chun Hsieh, Amy Wang, Chih-Wei Lai, Chun-Hsien Lin
  • Publication number: 20080305563
    Abstract: A system and method for controlling resistivity uniformity in a Copper trench structure by controlling the CMP process is provided. A preferred embodiment comprises a system and a method in which a plurality of CMP process recipes may be created comprising at least a slurry arm position. A set of metrological data for at least one layer of the semiconductor substrate may be estimated, and an optimum CMP process recipe may be selected based on the set of metrological data. The optimum CMP process recipe may be implemented on the semiconductor substrate.
    Type: Application
    Filed: June 7, 2007
    Publication date: December 11, 2008
    Inventors: Francis Ko, Chun-Hsien Lin, Jean Wang, Chih-Wei Lai, Ping-Hsu Chen, Henry Lo
  • Publication number: 20080275586
    Abstract: A method to enable wafer result prediction includes collecting manufacturing data from various semiconductor manufacturing tools and metrology tools; choosing key parameters using an autokey method based on the manufacturing data; building a virtual metrology based on the key parameters; and predicting wafer results using the virtual metrology.
    Type: Application
    Filed: February 5, 2008
    Publication date: November 6, 2008
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Francis Ko, Chih-Wei Lai, Kewei Zuo, Henry Lo, Jean Wang, Ping-Hsu Chen, Chun-Hsien Lin, Chen-Hua Yu
  • Publication number: 20080275585
    Abstract: A system, method, and computer readable medium for extracting a key process parameter correlative to a selected device parameter are provided. In an embodiment, the key process parameter is determined using a gene map analysis. The gene map analysis includes grouping highly correlative process parameter and determining the correlation of a group to the selected device parameter. In an embodiment, the groups having greatest correlation to the selected device parameter are displayed in a correlation matrix and/or a gene map.
    Type: Application
    Filed: February 5, 2008
    Publication date: November 6, 2008
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chun-Hsien Lin, Francis Ko, Kewei Zuo, Henry Lo, Jean Wang
  • Publication number: 20080275588
    Abstract: A method of monitoring uniformity of a wafer is provided. A wafer parameter is selected. Manufacturing data is collected. The manufacturing data includes measurements of the selected wafer parameter. An average offset profile of the wafer parameter for a first and second wafer is determined using the manufacturing data. The first and second wafer are associated with a product type and were processed by a processing tool. An offset profile for a third wafer is predicted for a wafer using the average offset profile. The third wafer is associated with the product type and was processed by the processing tool.
    Type: Application
    Filed: May 3, 2007
    Publication date: November 6, 2008
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Jean Wang, Francis Ko, Ping-Hsu Chen, Henry Lo, Chih-Wei Lai