Patents by Inventor Chih-Wen Liu
Chih-Wen Liu 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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Publication number: 20240367202Abstract: A process tool including a polishing pad on a top surface of a wafer platen. A wafer carrier is configured to hold a wafer over the polishing pad. A slurry dispenser is configured to dispense an abrasive slurry including a plurality of charged abrasive particles having a first polarity onto the polishing pad. A first conductive rod is within the wafer platen and coupled to a first voltage supply. A wafer roller is configured to support the wafer. A first wafer brush is arranged beside the wafer roller. A second conductive rod is within the first wafer brush and coupled to a second voltage supply. The first voltage supply is configured to apply a first charge having a second polarity, opposite the first polarity, to the first conductive rod. The second voltage supply is configured to apply a second charge having the second polarity to the second conductive rod.Type: ApplicationFiled: July 19, 2024Publication date: November 7, 2024Inventors: Chih-Wen Liu, Yeo-Sin Lin, Shu-Wei Hsu, Che-Hao Tu, Hui-Chi Huang, Kei-Wei Chen
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Patent number: 12128455Abstract: A method comprising: providing a slurry to a polishing pad that is disposed on a wafer platen, the slurry comprising a plurality of electrically charged abrasive particles having a first electrical polarity; moving a first side of a wafer into contact with the slurry and the polishing pad; applying a first electrical charge having a second electrical polarity, opposite the first electrical polarity, to a first conductive rod; moving the first side of the wafer away from the polishing pad while the first electrical charge is applied to the first conductive rod; moving a first wafer brush into contact with the first side of the wafer; applying a second electrical charge having the second electrical polarity, opposite the first electrical polarity, to a second conductive rod arranged within the first wafer brush; and moving the first wafer brush away from the first side of the wafer.Type: GrantFiled: August 15, 2022Date of Patent: October 29, 2024Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Chih-Wen Liu, Yeo-Sin Lin, Shu-Wei Hsu, Che-Hao Tu, Hui-Chi Huang, Kei-Wei Chen
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Patent number: 12068196Abstract: The current disclosure provides a semiconductor fabrication method that defines the height of gate structures at the formation of the gate structure. A gate line-end region is formed by removing a portion of a gate structure. A resulted recess is filled with a dielectric material is chosen to have a material property suitable for a later contact formation process of forming a metal contact. A metal contact structure is formed through the recess filling dielectric layer to connect to a gate structure and/or a source/drain region.Type: GrantFiled: February 9, 2021Date of Patent: August 20, 2024Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Che-Liang Chung, Che-Hao Tu, Kei-Wei Chen, Chih-Wen Liu, You-Shiang Lin, Yi-Ching Liang
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Publication number: 20240217052Abstract: The present disclosure is directed to techniques of zone-based target control in chemical mechanical polishing of wafers. Multiple zones are identified on a surface of a wafer. The CMP target is achieved on each zone in a sequence of CMP processes. Each CMP process in the sequence achieves the CMP target for only one zone, using a CMP process selective to other zones.Type: ApplicationFiled: March 11, 2024Publication date: July 4, 2024Inventors: Che-Liang CHUNG, Che-Hao TU, Kei-Wei CHEN, Chih-Wen LIU
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Patent number: 11951587Abstract: The present disclosure is directed to techniques of zone-based target control in chemical mechanical polishing of wafers. Multiple zones are identified on a surface of a wafer. The CMP target is achieved on each zone in a sequence of CMP processes. Each CMP process in the sequence achieves the CMP target for only one zone, using a CMP process selective to other zones.Type: GrantFiled: August 12, 2019Date of Patent: April 9, 2024Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Che-Liang Chung, Che-Hao Tu, Kei-Wei Chen, Chih-Wen Liu
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Publication number: 20240050995Abstract: A process tool including a polishing pad on a top surface of a wafer platen. A wafer carrier is configured to hold a wafer over the polishing pad. A slurry dispenser is configured to dispense an abrasive slurry including a plurality of charged abrasive particles having a first polarity onto the polishing pad. A first conductive rod is within the wafer platen and coupled to a first voltage supply. A wafer roller is configured to support the wafer. A first wafer brush is arranged beside the wafer roller. A second conductive rod is within the first wafer brush and coupled to a second voltage supply. The first voltage supply is configured to apply a first charge having a second polarity, opposite the first polarity, to the first conductive rod. The second voltage supply is configured to apply a second charge having the second polarity to the second conductive rod.Type: ApplicationFiled: August 15, 2022Publication date: February 15, 2024Inventors: Chih-Wen Liu, Yeo-Sin Lin, Shu-Wei Hsu, Che-Hao Tu, Hui-Chi Huang, Kei-Wei Chen
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Publication number: 20210166972Abstract: The current disclosure provides a semiconductor fabrication method that defines the height of gate structures at the formation of the gate structure. A gate line-end region is formed by removing a portion of a gate structure. A resulted recess is filled with a dielectric material is chosen to have a material property suitable for a later contact formation process of forming a metal contact. A metal contact structure is formed through the recess filling dielectric layer to connect to a gate structure and/or a source/drain region.Type: ApplicationFiled: February 9, 2021Publication date: June 3, 2021Inventors: Che-Liang CHUNG, Che-Hao Tu, KEI-WEI CHEN, Chih-Wen Liu, You-Shiang Lin, Yi-Ching Liang
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Patent number: 10943822Abstract: The current disclosure provides a semiconductor fabrication method that defines the height of gate structures at the formation of the gate structure. A gate line-end region is formed by removing a portion of a gate structure. A resulted recess is filled with a dielectric material is chosen to have a material property suitable for a later contact formation process of forming a metal contact. A metal contact structure is formed through the recess filling dielectric layer to connect to a gate structure and/or a source/drain region.Type: GrantFiled: March 15, 2018Date of Patent: March 9, 2021Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Che-Liang Chung, Che-Hao Tu, Kei-Wei Chen, Chih-Wen Liu, You-Shiang Lin, Yi-Ching Liang
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Publication number: 20210023678Abstract: A system controls a flow of a chemical mechanical polish (CMP) slurry into a chamber to form a slurry reservoir within the chamber. Once the slurry reservoir has been formed within the chamber, the system moves a polishing head to position and force a surface of a wafer that is attached to the polishing head into contact with a polishing pad attached to a platen within the chamber. A wafer/pad interface is formed at the surface of the wafer forced into contact with the polishing pad and the wafer/pad interface is disposed below an upper surface of the slurry reservoir. During CMP processing, the system controls one or more of a level, a force, and a rotation of the platen, a position, a force and a rotation of the polishing head to conduct the CMP processing of the surface of the wafer at the wafer/pad interface.Type: ApplicationFiled: October 12, 2020Publication date: January 28, 2021Inventors: Chih-Wen Liu, Hao-Yun Cheng, Che-Hao Tu, Kei-Wei Chen
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Patent number: 10800004Abstract: A system controls a flow of a chemical mechanical polish (CMP) slurry into a chamber to form a slurry reservoir within the chamber. Once the slurry reservoir has been formed within the chamber, the system moves a polishing head to position and force a surface of a wafer that is attached to the polishing head into contact with a polishing pad attached to a platen within the chamber. A wafer/pad interface is formed at the surface of the wafer forced into contact with the polishing pad and the wafer/pad interface is disposed below an upper surface of the slurry reservoir. During CMP processing, the system controls one or more of a level, a force, and a rotation of the platen, a position, a force and a rotation of the polishing head to conduct the CMP processing of the surface of the wafer at the wafer/pad interface.Type: GrantFiled: January 18, 2019Date of Patent: October 13, 2020Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Chih-Wen Liu, Hao-Yun Cheng, Che-Hao Tu, Kei-Wei Chen
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Publication number: 20200101582Abstract: A system controls a flow of a chemical mechanical polish (CMP) slurry into a chamber to form a slurry reservoir within the chamber. Once the slurry reservoir has been formed within the chamber, the system moves a polishing head to position and force a surface of a wafer that is attached to the polishing head into contact with a polishing pad attached to a platen within the chamber. A wafer/pad interface is formed at the surface of the wafer forced into contact with the polishing pad and the wafer/pad interface is disposed below an upper surface of the slurry reservoir. During CMP processing, the system controls one or more of a level, a force, and a rotation of the platen, a position, a force and a rotation of the polishing head to conduct the CMP processing of the surface of the wafer at the wafer/pad interface.Type: ApplicationFiled: January 18, 2019Publication date: April 2, 2020Inventors: Chih-Wen Liu, Hao-Yun Cheng, Che-Hao Tu, Kei-Wei Chen
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Publication number: 20200094369Abstract: The present disclosure is directed to techniques of zone-based target control in chemical mechanical polishing of wafers. Multiple zones are identified on a surface of a wafer. The CMP target is achieved on each zone in a sequence of CMP processes. Each CMP process in the sequence achieves the CMP target for only one zone, using a CMP process selective to other zones.Type: ApplicationFiled: August 12, 2019Publication date: March 26, 2020Inventors: Che-Liang Chung, Che-Hao Tu, Kei-Wei Chen, Chih-Wen Liu
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Publication number: 20190287852Abstract: The current disclosure provides a semiconductor fabrication method that defines the height of gate structures at the formation of the gate structure. A gate line-end region is formed by removing a portion of a gate structure. A resulted recess is filled with a dielectric material is chosen to have a material property suitable for a later contact formation process of forming a metal contact. A metal contact structure is formed through the recess filling dielectric layer to connect to a gate structure and/or a source/drain region.Type: ApplicationFiled: March 15, 2018Publication date: September 19, 2019Inventors: Che-Liang Chung, Che-Hao Tu, KEI-WEI CHEN, Chih-Wen Liu, You-Shiang Lin, Yi-Ching Liang
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Patent number: 9941109Abstract: A method is presented that includes the step of polishing a wafer positioned on a platen. After polishing the wafer, the method includes initiating a high pressure rinse on the wafer while the wafer is positioned on the platen, wherein the high pressure rinse includes a hydrophilic solution. The wafer is soaked in the hydrophilic solution, and after soaking the wafer, the wafer is cleaned.Type: GrantFiled: June 29, 2016Date of Patent: April 10, 2018Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Chih-Wen Liu, Che-Hao Tu, Po-Chin Nien, William Weilun Hong, Ying-Tsung Chen
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Patent number: 9922837Abstract: A method includes measuring a topography of a wafer, determining that a first portion of the wafer has a greater thickness than a specified thickness. The method further includes, after measuring the wafer, performing a Chemical Mechanical Polishing (CMP) process to a first side of the wafer, and during application of the CMP process, applying additional pressure to a region of the wafer, the region comprising an asymmetric part of the wafer, the region including at least a part of the first portion of the wafer.Type: GrantFiled: March 2, 2016Date of Patent: March 20, 2018Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.Inventors: Chih-Wen Liu, Che-Hao Tu, Po-Chin Nien, William Weilun Hong, Ying-Tsung Chen
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Publication number: 20180047662Abstract: A method of manufacturing an interposer substrate, including providing a carrier having a first circuit layer formed thereon, forming a plurality of conductive pillars on the first circuit layer, forming a first insulating layer on the carrier, with the conductive pillars being exposed from the first insulating layer, forming, on the conductive pillars a second circuit layer that is electrically connected to the conductive pillars, forming a second insulating layer on the second surface of the first insulating layer and the second circuit layer, exposing a portion of a surface of the second circuit layer from the second insulating layer, and removing the carrier. The invention further provides the interposer substrate as described above.Type: ApplicationFiled: October 27, 2017Publication date: February 15, 2018Applicant: PHOENIX PIONEER TECHNOLOGY CO., LTD.Inventors: Che-Wei Hsu, Shih-Ping Hsu, Chih-Wen Liu
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Publication number: 20180005840Abstract: A method is presented that includes the step of polishing a wafer positioned on a platen. After polishing the wafer, the method includes initiating a high pressure rinse on the wafer while the wafer is positioned on the platen, wherein the high pressure rinse includes a hydrophilic solution. The wafer is soaked in the hydrophilic solution, and after soaking the wafer, the wafer is cleaned.Type: ApplicationFiled: June 29, 2016Publication date: January 4, 2018Inventors: Chih-Wen Liu, Che-Hao Tu, Po-Chin Nien, William Weilun Hong, Ying-Tsung Chen
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Patent number: 9831165Abstract: A method of manufacturing an interposer substrate, including providing a carrier having a first circuit layer formed thereon, forming a plurality of conductive pillars on the first circuit layer, forming a first insulating layer on the carrier, with the conductive pillars being exposed from the first insulating layer, forming on the conductive pillars a second circuit layer that is electrically connected to the conductive pillars, forming a second insulating layer on the second surface of the first insulating layer and the second circuit layer, exposing a portion of a surface of the second circuit layer from the second insulating layer, and removing the carrier. The invention further provides the interposer substrate as described above.Type: GrantFiled: November 19, 2014Date of Patent: November 28, 2017Assignee: PHOENIX PIONEER TECHNOLOGY CO., LTD.Inventors: Che-Wei Hsu, Shih-Ping Hsu, Chih-Wen Liu
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Publication number: 20170256414Abstract: A method includes measuring a topography of a wafer, determining that a first portion of the wafer has a greater thickness than a specified thickness. The method further includes, after measuring the wafer, performing a Chemical Mechanical Polishing (CMP) process to a first side of the wafer, and during application of the CMP process, applying additional pressure to a region of the wafer, the region comprising an asymmetric part of the wafer, the region including at least a part of the first portion of the wafer.Type: ApplicationFiled: March 2, 2016Publication date: September 7, 2017Inventors: Chih-Wen Liu, Che-Hao Tu, Po-Chin Nien, William Weilun Hong, Ying-Tsung Chen
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Publication number: 20160104652Abstract: A method for fabricating a package structure is provided, which includes the steps of: forming a wiring layer on a carrier by electroplating; disposing at least one electronic component on the wiring layer; forming on the carrier an insulating layer that encapsulates the wiring layer and the electronic component; and removing the carrier. With the single wiring layer having one surface electrically connected the at least one electronic component and the other surface electrically connected to a plurality of conductive elements, the package structure has a signal transmission path that is shortened.Type: ApplicationFiled: April 13, 2015Publication date: April 14, 2016Inventors: Shih-Ping Hsu, Chih-Wen Liu, Tang-I Wu, Shu-Wei Hu