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).
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Patent number: 9037279Abstract: 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: GrantFiled: July 7, 2010Date of Patent: May 19, 2015Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Francis Ko, Tzu-yu Wang, Kewei Zuo, Henry Lo, Jean Wang, Chih-Wei Lai
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Patent number: 8716867Abstract: 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: GrantFiled: May 12, 2010Date of Patent: May 6, 2014Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Francis Ko, Chi-Chun Hsieh, Shang-Yun Hou, Wen-Chih Chiou, Shin-Puu Jeng, Chen-Hua Yu
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Patent number: 8682466Abstract: 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: GrantFiled: February 5, 2008Date of Patent: March 25, 2014Assignee: 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
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Patent number: 8433434Abstract: 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: GrantFiled: April 23, 2010Date of Patent: April 30, 2013Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Amy Wang, Chen-Hua Yu, Jean Wang, Henry Lo, Francis Ko, Chih-Wei Lai, Kewei Zuo
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Patent number: 8409993Abstract: 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: GrantFiled: June 7, 2007Date of Patent: April 2, 2013Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Francis Ko, Chun-Hsien Lin, Jean Wang, Chih-Wei Lai, Ping-Hsu Chen, Henry Lo
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Patent number: 8145337Abstract: 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: GrantFiled: November 16, 2007Date of Patent: March 27, 2012Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Chun-Hsien Lin, Amy Wang, Francis Ko, Jean Wang
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Publication number: 20110277655Abstract: 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: ApplicationFiled: May 12, 2010Publication date: November 17, 2011Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Francis Ko, Chi-Chun Hsieh, Shang-Yun Hou, Wen-Chih Chiou, Shin-Puu Jeng, Chen-Hua Yu
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Patent number: 7974728Abstract: 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: GrantFiled: February 5, 2008Date of Patent: July 5, 2011Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Chun-Hsien Lin, Francis Ko, Kewei Zuo, Henry Lo, Jean Wang
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Publication number: 20110060441Abstract: 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: ApplicationFiled: July 7, 2010Publication date: March 10, 2011Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Francis Ko, Tzu-Yu Wang, Kewei Zuo, Henry Lo, Jean Wang, Chih-Wei Lai
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Publication number: 20110009998Abstract: 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: ApplicationFiled: April 23, 2010Publication date: January 13, 2011Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Amy Wang, Chen-Hua Yu, Jean Wang, Henry Lo, Francis Ko, Chih-Wei Lai, Kewei Zuo
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Patent number: 7851234Abstract: 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: GrantFiled: November 29, 2007Date of Patent: December 14, 2010Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Francis Ko, Jean Wang, Henry Lo, Chi-Chun Hsieh, Amy Wang
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Patent number: 7767471Abstract: 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: GrantFiled: July 30, 2007Date of Patent: August 3, 2010Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Jean Wang, Francis Ko, Henry Lo, Chi-Chun Hsieh, Amy Wang, Chih-Wei Lai, Chun-Hsien Lin
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Patent number: 7642100Abstract: 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: GrantFiled: November 14, 2006Date of Patent: January 5, 2010Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Chen-Hua Yu, Lawrance Sheu, Yi-Li Hsiao, Francis Ko
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Patent number: 7634325Abstract: 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: GrantFiled: May 3, 2007Date of Patent: December 15, 2009Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Jean Wang, Francis Ko, Ping-Hsu Chen, Henry Lo, Chih-Wei Lai
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Publication number: 20090142860Abstract: 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: ApplicationFiled: November 29, 2007Publication date: June 4, 2009Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Francis Ko, Jean Wang, Henry Lo, Chi-Chun Hsieh, Amy Wang
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Publication number: 20090035883Abstract: 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: ApplicationFiled: July 30, 2007Publication date: February 5, 2009Inventors: Jean Wang, Francis Ko, Henry Lo, Chi-Chun Hsieh, Amy Wang, Chih-Wei Lai, Chun-Hsien Lin
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Publication number: 20080305563Abstract: 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: ApplicationFiled: June 7, 2007Publication date: December 11, 2008Inventors: Francis Ko, Chun-Hsien Lin, Jean Wang, Chih-Wei Lai, Ping-Hsu Chen, Henry Lo
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Publication number: 20080275676Abstract: 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: ApplicationFiled: November 16, 2007Publication date: November 6, 2008Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Chun-Hsien Lin, Amy Wang, Francis Ko, Jean Wang
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Publication number: 20080275586Abstract: 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: ApplicationFiled: February 5, 2008Publication date: November 6, 2008Applicant: 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
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Publication number: 20080275585Abstract: 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: ApplicationFiled: February 5, 2008Publication date: November 6, 2008Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Chun-Hsien Lin, Francis Ko, Kewei Zuo, Henry Lo, Jean Wang