Patents by Inventor Tian-Choy Gan
Tian-Choy Gan 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: 10134858Abstract: A semiconductor process includes the following step. A metal gate strip and a cap layer are sequentially formed in a trench of a dielectric layer. The cap layer and the metal gate strip are cut off to form a plurality of caps on a plurality of metal gates, and a gap isolates adjacent caps and adjacent metal gates. An isolation material fills in the gap. The present invention also provides semiconductor structures formed by said semiconductor process. For example, the semiconductor structure includes a plurality of stacked structures in a trench of a dielectric layer, where each of the stacked structures includes a metal gate and a cap on the metal gate, where an isolation slot isolates and contacts adjacent stacked structures at end to end, and the isolation slot has same level as the stacked structures.Type: GrantFiled: April 21, 2017Date of Patent: November 20, 2018Assignee: UNITED MICROELECTRONICS CORP.Inventors: Tian Choy Gan, Chu-Yun Hsiao, Chun-Che Huang, Chia-Fu Hsu
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Patent number: 10109630Abstract: The present invention provides a semiconductor device and a method of forming the same. The semiconductor device includes a substrate, a first transistor and a second transistor. The first transistor and the second transistor are disposed on the substrate. The first transistor includes a first channel and a first work function layer. The second transistor includes a second channel and a second work function layer, where the first channel and the second channel include different dopants, and the second work function layer and the first work function layer have a same conductive type and different thicknesses.Type: GrantFiled: May 24, 2017Date of Patent: October 23, 2018Assignee: UNITED MICROELECTRONICS CORP.Inventors: Tian Choy Gan, Chu-Yun Hsiao, Chia-Fu Hsu
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Publication number: 20170263608Abstract: The present invention provides a semiconductor device and a method of forming the same. The semiconductor device includes a substrate, a first transistor and a second transistor. The first transistor and the second transistor are disposed on the substrate. The first transistor includes a first channel and a first work function layer. The second transistor includes a second channel and a second work function layer, where the first channel and the second channel include different dopants, and the second work function layer and the first work function layer have a same conductive type and different thicknesses.Type: ApplicationFiled: May 24, 2017Publication date: September 14, 2017Inventors: Tian Choy Gan, Chu-Yun Hsiao, Chia-Fu Hsu
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Publication number: 20170222003Abstract: A semiconductor process includes the following step. A metal gate strip and a cap layer are sequentially formed in a trench of a dielectric layer. The cap layer and the metal gate strip are cut off to form a plurality of caps on a plurality of metal gates, and a gap isolates adjacent caps and adjacent metal gates. An isolation material fills in the gap. The present invention also provides semiconductor structures formed by said semiconductor process. For example, the semiconductor structure includes a plurality of stacked structures in a trench of a dielectric layer, where each of the stacked structures includes a metal gate and a cap on the metal gate, where an isolation slot isolates and contacts adjacent stacked structures at end to end, and the isolation slot has same level as the stacked structures.Type: ApplicationFiled: April 21, 2017Publication date: August 3, 2017Inventors: Tian Choy Gan, Chu-Yun Hsiao, Chun-Che Huang, Chia-Fu Hsu
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Patent number: 9698059Abstract: The present invention provides a semiconductor device and a method of forming the same. The semiconductor device includes a substrate, a first transistor and a second transistor. The first transistor and the second transistor are disposed on the substrate. The first transistor includes a first channel and a first work function layer. The second transistor includes a second channel and a second work function layer, where the first channel and the second channel include different dopants, and the second work function layer and the first work function layer have a same conductive type and different thicknesses.Type: GrantFiled: April 15, 2015Date of Patent: July 4, 2017Assignee: UNITED MICROELECTRONICS CORP.Inventors: Tian Choy Gan, Chu-Yun Hsiao, Chia-Fu Hsu
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Patent number: 9666471Abstract: A semiconductor process includes the following step. A metal gate strip and a cap layer are sequentially formed in a trench of a dielectric layer. The cap layer and the metal gate strip are cut off to form a plurality of caps on a plurality of metal gates, and a gap isolates adjacent caps and adjacent metal gates. An isolation material fills in the gap. The present invention also provides semiconductor structures formed by said semiconductor process. For example, the semiconductor structure includes a plurality of stacked structures in a trench of a dielectric layer, where each of the stacked structures includes a metal gate and a cap on the metal gate, where an isolation slot isolates and contacts adjacent stacked structures at end to end, and the isolation slot has same level as the stacked structures.Type: GrantFiled: May 14, 2015Date of Patent: May 30, 2017Assignee: UNITED MICROELECTRONICS CORP.Inventors: Tian Choy Gan, Chu-Yun Hsiao, Chun-Che Huang, Chia-Fu Hsu
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Publication number: 20160300755Abstract: A semiconductor process includes the following step. A metal gate strip and a cap layer are sequentially formed in a trench of a dielectric layer. The cap layer and the metal gate strip are cut off to form a plurality of caps on a plurality of metal gates, and a gap isolates adjacent caps and adjacent metal gates. An isolation material fills in the gap. The present invention also provides semiconductor structures formed by said semiconductor process. For example, the semiconductor structure includes a plurality of stacked structures in a trench of a dielectric layer, where each of the stacked structures includes a metal gate and a cap on the metal gate, where an isolation slot isolates and contacts adjacent stacked structures at end to end, and the isolation slot has same level as the stacked structures.Type: ApplicationFiled: May 14, 2015Publication date: October 13, 2016Inventors: Tian Choy Gan, Chu-Yun Hsiao, Chun-Che Huang, Chia-Fu Hsu
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Publication number: 20160276224Abstract: The present invention provides a semiconductor device and a method of forming the same. The semiconductor device includes a substrate, a first transistor and a second transistor. The first transistor and the second transistor are disposed on the substrate. The first transistor includes a first channel and a first work function layer. The second transistor includes a second channel and a second work function layer, where the first channel and the second channel include different dopants, and the second work function layer and the first work function layer have a same conductive type and different thicknesses.Type: ApplicationFiled: April 15, 2015Publication date: September 22, 2016Inventors: Tian Choy Gan, Chu-Yun Hsiao, Chia-Fu Hsu
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Patent number: 8994116Abstract: Provided is a method of fabricating a semiconductor device that includes forming first and second fins over first and second regions of a substrate, forming first and second gate structures over the first and second fins, the first and second gate structures including first and second poly gates, forming an inter-level dielectric (ILD) over the substrate, performing a chemical mechanical polishing on the ILD to expose the first and second poly gates, forming a mask to protect the first poly gate of the first gate structure, removing the second poly gate thereby forming a first trench, removing the mask, partially removing the first poly gate thereby forming a second trench, forming a work function metal layer partially filling the first and second trenches, forming a fill metal layer filling a remainder of the first and second trenches, and removing the metal layers outside the first and second trenches.Type: GrantFiled: November 19, 2013Date of Patent: March 31, 2015Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Tian-Choy Gan, Hsien-Chin Lin, Chia-Pin Lin, Shyue-Shyh Lin, Li-Shiun Chen, Shin Hsien Liao
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Patent number: 8796095Abstract: Provided is a high-k metal gate structure formed over a semiconductor fin. A nitride layer is formed over the gate structure and the semiconductor fin, using two separate deposition operations, the first forming a very thin nitride film. Implantation operations may be carried out in between the two nitride film deposition operations. The first nitride film may be SiNx or SiCNx and the second nitride film is SiCNx. The nitride films may be combined to form low wet etch rate spacers enabling further processing operations to be carried out without damaging underlying structures and without requiring the formation of further dummy spacers. Further processing operations include epitaxial silicon/SiGe processing sequences and source/drain implanting operations carried out with the low etch rate spacers intact.Type: GrantFiled: September 22, 2011Date of Patent: August 5, 2014Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Chia-Pin Lin, Wen-Sheh Huang, Tian-Choy Gan, Chia-Lung Hung, Hsien-Chin Lin, Shyue-Shyh Lin
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Publication number: 20140061817Abstract: Provided is a method of fabricating a semiconductor device that includes forming first and second fins over first and second regions of a substrate, forming first and second gate structures over the first and second fins, the first and second gate structures including first and second poly gates, forming an inter-level dielectric (ILD) over the substrate, performing a chemical mechanical polishing on the ILD to expose the first and second poly gates, forming a mask to protect the first poly gate of the first gate structure, removing the second poly gate thereby forming a first trench, removing the mask, partially removing the first poly gate thereby forming a second trench, forming a work function metal layer partially filling the first and second trenches, forming a fill metal layer filling a remainder of the first and second trenches, and removing the metal layers outside the first and second trenches.Type: ApplicationFiled: November 19, 2013Publication date: March 6, 2014Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Tian-Choy Gan, Hsien-Chin Lin, Chia-Pin Lin, Shyue-Shyh Lin, Li-Shiun Chen, Shin Hsien Liao
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Patent number: 8609495Abstract: Provided is a method of fabricating a semiconductor device that includes forming first and second fins over first and second regions of a substrate, forming first and second gate structures over the first and second fins, the first and second gate structures including first and second poly gates, forming an inter-level dielectric (ILD) over the substrate, performing a chemical mechanical polishing on the ILD to expose the first and second poly gates, forming a mask to protect the first poly gate of the first gate structure, removing the second poly gate thereby forming a first trench, removing the mask, partially removing the first poly gate thereby forming a second trench, forming a work function metal layer partially filling the first and second trenches, forming a fill metal layer filling a remainder of the first and second trenches, and removing the metal layers outside the first and second trenches.Type: GrantFiled: April 8, 2010Date of Patent: December 17, 2013Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Tian-Choy Gan, Hsien-Chin Lin, Chia-Pin Lin, Shyue-Shyh Lin, Li-Shiun Chen, Shin Hsien Liao
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Publication number: 20120015493Abstract: Provided is a high-k metal gate structure formed over a semiconductor fin. A nitride layer is formed over the gate structure and the semiconductor fin, using two separate deposition operations, the first forming a very thin nitride film. Implantation operations may be carried out in between the two nitride film deposition operations. The first nitride film may be SiNx or SiCNx and the second nitride film is SiCNx. The nitride films may be combined to form low wet etch rate spacers enabling further processing operations to be carried out without damaging underlying structures and without requiring the formation of further dummy spacers. Further processing operations include epitaxial silicon/SiGe processing sequences and source/drain implanting operations carried out with the low etch rate spacers intact.Type: ApplicationFiled: September 22, 2011Publication date: January 19, 2012Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.Inventors: Chia-Pin Lin, Wen-Sheh Huang, Tian-Choy Gan, Chia-Lung Hung, Hsien-Chin Lin, Shyue-Shyh Lin
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Publication number: 20110248348Abstract: Provided is a method of fabricating a semiconductor device that includes forming first and second fins over first and second regions of a substrate, forming first and second gate structures over the first and second fins, the first and second gate structures including first and second poly gates, forming an inter-level dielectric (ILD) over the substrate, performing a chemical mechanical polishing on the ILD to expose the first and second poly gates, forming a mask to protect the first poly gate of the first gate structure, removing the second poly gate thereby forming a first trench, removing the mask, partially removing the first poly gate thereby forming a second trench, forming a work function metal layer partially filling the first and second trenches, forming a fill metal layer filling a remainder of the first and second trenches, and removing the metal layers outside the first and second trenches.Type: ApplicationFiled: April 8, 2010Publication date: October 13, 2011Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Tian-Choy Gan, Hsien-Chin Lin, Chia-Pin Lin, Shyue-Shyh Lin, Li-Shiun Chen, Shin Hsien Liao
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Patent number: 8034677Abstract: Provided is a high-k metal gate structure formed over a semiconductor fin. A nitride layer is formed over the gate structure and the semiconductor fin, using two separate deposition operations, the first forming a very thin nitride film. Implantation operations such as an LDD or a PKT implant, are carried out in between the two nitride film deposition operations. The first nitride film may be SiN, or SiCNx and the second nitride film is SiCNx with a low wet etch rate in H3PO4 and dilute HF acid. The nitride films may be combined to form low wet etch rate spacers enabling further processing operations to be carried out without damaging underlying structures and without requiring the formation of further dummy spacers. Further processing operations include epitaxial silicon/SiGe processing sequences and source/drain implanting operations carried out with the low etch rate spacers intact.Type: GrantFiled: February 25, 2010Date of Patent: October 11, 2011Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Chia-Pin Lin, Wen-Sheh Huang, Tian-Choy Gan, Chia-Lung Hung, Hsien-Chin Lin, Shyue-Shyh Lin
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Publication number: 20110207279Abstract: Provided is a high-k metal gate structure formed over a semiconductor fin. A nitride layer is formed over the gate structure and the semiconductor fin, using two separate deposition operations, the first forming a very thin nitride film. Implantation operations such as an LDD or a PKT implant, are carried out in between the two nitride film deposition operations. The first nitride film may be SiNx or SiCNx and the second nitride film is SiCNx with a low wet etch rate in H3PO4 and dilute HF acid. The nitride films may be combined to form low wet etch rate spacers enabling further processing operations to be carried out without damaging underlying structures and without requiring the formation of further dummy spacers. Further processing operations include epitaxial silicon/SiGe processing sequences and source/drain implanting operations carried out with the low etch rate spacers intact.Type: ApplicationFiled: February 25, 2010Publication date: August 25, 2011Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.Inventors: Chia-Pin LIN, Wen-Sheh HUANG, Tian-Choy GAN, Chia-Lung HUNG, Hsien-Chin LIN, Shyue-Shyh LIN