Patents by Inventor Kai Han
Kai Han 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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Method for forming gate structure, method for forming semiconductor device, and semiconductor device
Patent number: 8921171Abstract: A method for forming a gate structure, comprising: providing a substrate, where the substrate includes a nMOSFET area and a pMOSFET area, each of the nMOSFET area and the pMOSFET area has a gate trench, and each of the gate trenches is provided at a bottom portion with a gate dielectric layer; forming a gate dielectric capping layer on the substrate; forming an etching stop layer on the gate dielectric capping layer; forming an oxygen scavenging element layer on the etching stop layer; forming a first work function adjustment layer on the oxygen scavenging element layer; etching the first work function adjustment layer above the nMOSFET area; forming a second work function adjustment layer on the surface of the substrate; metal layer depositing and annealing to fill the gate trenches with a metal layer; and removing the metal layer outside the gate trenches.Type: GrantFiled: July 24, 2012Date of Patent: December 30, 2014Assignee: Institute of Microelectronics, Chinese Academy of SciencesInventors: Hong Yang, Xueli Ma, Wenwu Wang, Kai Han, Xiaolei Wang, Huaxiang Yin, Jiang Yan -
Patent number: 8802518Abstract: A semiconductor device and a method for manufacturing the same, the method comprising: providing a semiconductor substrate; forming a dummy gate area on the substrate, forming spacers on sidewalls of the gate area, and forming source and drain areas in the semiconductor substrate on both sides of the dummy gate area, the dummy gate area comprising an interface layer and a dummy gate electrode; forming a dielectric cap layer on the dummy gate area and source and drain areas; planarizing the device with the dielectric cap layer on the source and drain areas as a stop layer; further removing the dummy gate electrode to expose the interface layer; and forming replacement gate area on the interface layer. The thickness of the gate groove may be controlled by the thickness of the dielectric cap layer, and the replacement gates of desired thickness and width may be further formed upon requirements. Thus, the aspect ratio of the gate groove is reduced and a sufficient low gate resistance is ensured.Type: GrantFiled: October 17, 2011Date of Patent: August 12, 2014Assignee: Institute of Microelectronics, Chinese Academy of SciencesInventors: Wenwu Wang, Chao Zhao, Kai Han, Dapeng Chen
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Patent number: 8633098Abstract: The present invention relates to the field of semiconductor manufacturing. The present invention provides a method of manufacturing a semiconductor device, which comprises: providing a semiconductor substrate; forming an interface layer, a gate dielectric layer and a gate electrode on the substrate; forming a metal oxygen absorption layer on the gate electrode; performing a thermal annealing process on the semiconductor device so that the metal oxygen absorption layer absorbs oxygen in the interface layer and the thickness of the interface layer is reduced. By means of the present invention, the thickness of the interface layer can be reduced on one hand, and on the other hand the metal in the metal oxygen absorption layer is made to diffuse into the gate electrode and/or the gate dielectric layer through the annealing process, which further achieves the effects of adjusting the effective work function and controlling the threshold voltage.Type: GrantFiled: September 28, 2010Date of Patent: January 21, 2014Assignee: Institute of Microelectronics, Chinese Academy of SciencesInventors: Kai Han, Wenwu Wang, Xiaolei Wang, Shijie Chen, Dapeng Chen
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Patent number: 8633086Abstract: A method for forming a support structure for supporting and handling a semiconductor wafer containing vertical FETs formed at the front surface thereof is provided. In one embodiment, a semiconductor wafer is provided having a front surface and a rear surface, wherein the front surface comprises one or more dies separated by dicing lines. The wafer is thinned to a predetermined thickness. A plurality of patterned metal features are formed on a thinned rear surface to provide support for the wafer, wherein each of the plurality of patterned metal features covers substantially one die, leaving the dicing lines substantially uncovered. The wafer is thereafter diced along the dicing lines to separate the one or more dies for later chip packaging.Type: GrantFiled: December 31, 2009Date of Patent: January 21, 2014Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Alex Kalnitsky, Hsiao-Chin Tuan, Liang-Kai Han, Uway Tseng, Yuan-Chih Hsieh, Hung-Hua Lin
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Method for Forming Gate Structure, Method for Forming Semiconductor Device, and Semiconductor Device
Publication number: 20140015062Abstract: An embodiment of the present disclosure provides a method for forming a gate structure, comprising: providing a substrate, where the substrate includes a nMOSFET area and a pMOSFET area, each of the nMOSFET area and the pMOSFET area has a gate trench, and each of the gate trenches is provided at a bottom portion with a gate dielectric layer; forming a gate dielectric capping layer on a surface of the substrate; forming an oxygen scavenging element layer on the gate dielectric capping layer; forming an etching stop layer on the oxygen scavenging element layer; forming a work function adjustment layer on the etching stop layer; performing metal layer deposition and annealing process to fill the gate trenches with a metal layer; and removing the metal layer outside the gate trenches.Type: ApplicationFiled: July 24, 2012Publication date: January 16, 2014Inventors: Hong Yang, Xueli Ma, Wenwu Wang, Kai Han, Xiaolei Wang, Huaxiang Yin, Jiang Yan -
Method for Forming Gate Structure, Method for Forming Semiconductor Device, and Semiconductor Device
Publication number: 20140015063Abstract: A method for forming a gate structure, comprising: providing a substrate, where the substrate includes a nMOSFET area and a pMOSFET area, each of the nMOSFET area and the pMOSFET area has a gate trench, and each of the gate trenches is provided at a bottom portion with a gate dielectric layer; forming a gate dielectric capping layer on the substrate; forming an etching stop layer on the gate dielectric capping layer; forming an oxygen scavenging element layer on the etching stop layer; forming a first work function adjustment layer on the oxygen scavenging element layer; etching the first work function adjustment layer above the nMOSFET area; forming a second work function adjustment layer on the surface of the substrate; metal layer depositing and annealing to fill the gate trenches with a metal layer; and removing the metal layer outside the gate trenches.Type: ApplicationFiled: July 24, 2012Publication date: January 16, 2014Inventors: Hong Yang, Xueli Ma, Wenwu Wang, Kai Han, Xiaolei Wang, Huaxiang Yin, Jiang Yan -
Patent number: 8624325Abstract: The present invention provides a semiconductor device, comprising: a semiconductor substrate having a first region and a second region; a first gate structure belong to a PMOS device on the first region; a second gate structure belong to an nMOS device on the second region; a multiple-layer first sidewall spacer on sidewalls of the first gate structure, wherein a layer of the multiple-layer first sidewall spacer adjacent to the first gat structure is an oxide layer; a multiple-layer second sidewall spacer on sidewalls of the second gate structure, wherein a layer of the multiple layers of second sidewall spacer adjacent to the first gat structure is a nitride layer. Application of the present invention may alleviate the oxygen vacancy in a high-k gate dielectric in a pMOS device, and further avoid the problem of EOT growth of an nMOS device during the high-temperature thermal treatment process, and therefore effectively improve the overall performance of the high-k gate dielectric CMOS device.Type: GrantFiled: June 23, 2010Date of Patent: January 7, 2014Assignee: Institute of Microelectronics, Chinese Academy of SciencesInventors: Wang Wenwu, Shijie Chen, Xiaolei Wang, Kai Han, Dapeng Chen
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Patent number: 8583623Abstract: A method of pre-processing an XQuery on a XML data base and may comprise parsing the XQuery to obtain an abstract syntax tree and typing the abstract syntax tree to provide at least one pointer into a schema for XML documents of the XML data base. The typing step may involve the use of schema and accumulated instance data of the XML data base. Use of the accumulated instance data in addition to schema data allows for reduction of the set of pointers to a smaller set, which in turn reduces the number of documents to be examined when the query is executed.Type: GrantFiled: September 7, 2007Date of Patent: November 12, 2013Assignee: Software AGInventors: Juliane Harbarth, Thorsten Fiebig, Kay Hans-Peter Winkler
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Patent number: 8563415Abstract: The present invention relates to a method of manufacturing a semiconductor device. After depositing the metal gate electrode material, a layer of oxygen molecule catalyzing layer having a catalyzing function to the oxygen molecules is deposited, and afterwards, a low-temperature PMA annealing process is used to decompose the oxygen molecules in the annealing atmosphere into more active oxygen atoms. These oxygen atoms are diffused into the high-k gate dielectric film through the metal gate to supplement the oxygen vacancies in the high-k film, in order to alleviate oxygen vacancies in the high-k film and improve the quality of the high-k film. According to the present invention, the oxygen vacancies and defects of high-k gate dielectric film will be alleviated, and further, growth of SiOx interface layer having a low dielectric constant caused by the traditional PDA high temperature process may be prevented.Type: GrantFiled: June 24, 2010Date of Patent: October 22, 2013Assignee: Institute of Microelectronics, Chinese Academy of SciencesInventors: Wenwu Wang, Shijie Chen, Xiaolei Wang, Kai Han, Dapeng Chen
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Patent number: 8507991Abstract: A semiconductor device is provided. A multi-component high-k interface layer containing elements of the substrate is formed from an ultra-thin high-k dielectric material in a single-layer structure of atoms by rapid annealing in the manufacturing of a CMOS transistor by the replacement gate process, and a high-k gate dielectric layer with a higher dielectric constant and a metal gate layer are formed thereon. The EOT of the device is effectively decreased, and the diffusion of atoms in the high-k gate dielectric layer from an upper level thereof is effectively prevented by the optimized high-k interface layer at high-temperature treatment.Type: GrantFiled: June 14, 2012Date of Patent: August 13, 2013Assignee: Institute of Microelectronics, Chinese Academy of SciencesInventors: Wenwu Wang, Kai Han, Shijie Chen, Xiaolei Wang, Dapeng Chen
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Patent number: 8448164Abstract: A computing system includes a service-oriented architecture (SOA) registry that includes an SOA-application description, an abstract component description, a concrete component description, and a platform description. The SOA-application description is related to the abstract component description of a component of the SOA-application. The concrete component description includes a requirement of a respective component for a target platform. The platform descriptor describes a property of the target platform. The computing system is configured to deploy the SOA-application and its respective components to the target platform in accordance with the concrete descriptions.Type: GrantFiled: June 29, 2009Date of Patent: May 21, 2013Assignee: Software AGInventors: Markus Greiner, Kay Hans-Peter Winkler, Harald Schöning, Udo Hafermann, Juliane Harbarth
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Publication number: 20130092986Abstract: A semiconductor device and a method for manufacturing the same, the method comprising: providing a semiconductor substrate; forming a dummy gate area on the substrate, forming spacers on sidewalls of the gate area, and forming source and drain areas in the semiconductor substrate on both sides of the dummy gate area, the dummy gate area comprising an interface layer and a dummy gate electrode; forming a dielectric cap layer on the dummy gate area and source and drain areas; planarizing the device with the dielectric cap layer on the source and drain areas as a stop layer; further removing the dummy gate electrode to expose the interface layer; and forming replacement gate area on the interface layer. The thickness of the gate groove may be controlled by the thickness of the dielectric cap layer, and the replacement gates of desired thickness and width may be further formed upon requirements. Thus, the aspect ratio of the gate groove is reduced and a sufficient low gate resistance is ensured.Type: ApplicationFiled: October 17, 2011Publication date: April 18, 2013Inventors: Wenwu Wang, Chao Zhao, Kai Han, Dapeng Chen
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Publication number: 20120261761Abstract: A semiconductor device is provided. A multi-component high-k interface layer containing elements of the substrate is formed from an ultra-thin high-k dielectric material in a single-layer structure of atoms by rapid annealing in the manufacturing of a CMOS transistor by the replacement gate process, and a high-k gate dielectric layer with a higher dielectric constant and a metal gate layer are formed thereon. The EOT of the device is effectively decreased, and the diffusion of atoms in the high-k gate dielectric layer from an upper level thereof is effectively prevented by the optimized high-k interface layer at high-temperature treatment.Type: ApplicationFiled: June 14, 2012Publication date: October 18, 2012Applicant: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCESInventors: Wenwu Wang, Kai Han, Shijie Chen, Xiaolei Wang, Dapeng Chen
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Publication number: 20120261803Abstract: The present invention forms Hf1-xSixOy having a cubic phase or a tetragonal phase by doping a specific amount of SiO2 component into the high-K gate dielectric material HfO2 in combination with an optimized thermal processing technique, to thereby acquire a high-K gate dielectric thin film material having a greater bandgap, a higher K value and high thermal stability. Besides, the high-K gate dielectric thin film and a preparation method thereof proposed in the present invention are helpful to solve the problem of crystallization of ultra-thin films.Type: ApplicationFiled: October 17, 2011Publication date: October 18, 2012Inventors: Wenwu Wang, Chao Zhao, Kai Han, Dapeng Chen
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Publication number: 20120181612Abstract: The present disclosure involves a method. The method includes providing a substrate including a top surface. The method also includes forming a gate over the top surface of the substrate. The formed gate has a first height measured from the top surface of the substrate. The method also includes etching the gate to reduce the gate to a second height. This second height is substantially less than the first height. The present disclosure also involves a semiconductor device. The semiconductor device includes a substrate. The substrate includes a top surface. The semiconductor device also includes a first gate formed over the top surface of the substrate. The first gate has a first height. The semiconductor device also includes a second gate formed over the top surface of the substrate. The second gate has a second height. The first height is substantially less than the second height.Type: ApplicationFiled: January 13, 2011Publication date: July 19, 2012Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Jing-Hwang Yang, Chun-Heng Liao, Hsin-Li Cheng, Liang-Kai Han
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Patent number: 8222099Abstract: A semiconductor device and a method of manufacturing the same are provided. A multi-component high-k interface layer containing elements of the substrate is formed from a ultra-thin high-k dielectric material in a single-layer structure of atoms by rapid annealing in the manufacturing of a CMOS transistor by the replacement gate process, and a high-k gate dielectric layer with a higher dielectric constant and a metal gate layer are formed thereon. The EOT of the device is effectively decreased, and the diffusion of atoms in the high-k gate dielectric layer from an upper level thereof is effectively prevented by the optimized high-k interface layer at high-temperature treatment. Thus, the present invention may also avoid the growth of the interface layers and the degradation of carrier mobility.Type: GrantFiled: June 24, 2010Date of Patent: July 17, 2012Assignee: Institute of Microelectronics, Chinese Academy of SciencesInventors: Wenwu Wang, Kai Han, Shijie Chen, Xiaolei Wang, Dapeng Chen
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Publication number: 20120021596Abstract: The present invention relates to the field of semiconductor manufacturing. The present invention provides a method of manufacturing a semiconductor device, which comprises: providing a semiconductor substrate; forming an interface layer, a gate dielectric layer and a gate electrode on the substrate; forming a metal oxygen absorption layer on the gate electrode; performing a thermal annealing process on the semiconductor device so that the metal oxygen absorption layer absorbs oxygen in the interface layer and the thickness of the interface layer is reduced. By means of the present invention, the thickness of the interface layer can be reduced on one hand, and on the other hand the metal in the metal oxygen absorption layer is made to diffuse into the gate electrode and/or the gate dielectric layer through the annealing process, which further achieves the effects of adjusting the effective work function and controlling the threshold voltage.Type: ApplicationFiled: September 28, 2010Publication date: January 26, 2012Applicant: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCESInventors: Kai Han, Wenwu Wang, Xiaolei Wang, Shijie Chen, Dapeng Chen
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Publication number: 20120012939Abstract: The present invention provides a semiconductor device, comprising: a semiconductor substrate having a first region and a second region; a first gate structure belong to a PMOS device on the first region; a second gate structure belong to an nMOS device on the second region; a multiple-layer first sidewall spacer on sidewalls of the first gate structure, wherein a layer of the multiple-layer first sidewall spacer adjacent to the first gat structure is an oxide layer; a multiple-layer second sidewall spacer on sidewalls of the second gate structure, wherein a layer of the multiple layers of second sidewall spacer adjacent to the first gat structure is a nitride layer. Application of the present invention may alleviate the oxygen vacancy in a high-k gate dielectric in a pMOS device, and further avoid the problem of EOT growth of an nMOS device during the high-temperature thermal treatment process, and therefore effectively improve the overall performance of the high-k gate dielectric CMOS device.Type: ApplicationFiled: June 23, 2010Publication date: January 19, 2012Applicant: INSTITUE OF MICROELELCTRONICS, CHINESE ACADEMY OF SCINECESInventors: Wang Wenwu, Shijie Chen, Xiaolei Wang, Kai Han, Dapeng Chen
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Publication number: 20110260255Abstract: The present invention relates to a method of manufacturing a semiconductor device. After depositing the metal gate electrode material, a layer of oxygen molecule catalyzing layer having a catalyzing function to the oxygen molecules is deposited, and afterwards, a low-temperature PMA annealing process is used to decompose the oxygen molecules in the annealing atmosphere into more active oxygen atoms. These oxygen atoms are diffused into the high-k gate dielectric film through the metal gate to supplement the oxygen vacancies in the high-k film, in order to alleviate oxygen vacancies in the high-k film and improve the quality of the high-k film. According to the present invention, the oxygen vacancies and defects of high-k gate dielectric film will be alleviated, and further, growth of SiOx interface layer having a low dielectric constant caused by the traditional PDA high temperature process may be prevented.Type: ApplicationFiled: June 24, 2010Publication date: October 27, 2011Applicant: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCESInventors: Wenwu Wang, Shijie Chen, Xiaolei Wang, Kai Han, Dapeng Chen
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Publication number: 20110254063Abstract: The present invention provides a MOS device, which comprises: a substrate; an interface layer thin film formed on the substrate; a high k gate dielectric layer formed on the interface layer thin film; and a metal gate formed on the high k gate dielectric layer. The metal gate comprises, upwardly in order, a metal gate work function layer, an oxygen absorption element barrier layer, a metal gate oxygen absorbing layer, a metal gate barrier layer and a polysilicon layer.Type: ApplicationFiled: September 27, 2010Publication date: October 20, 2011Applicant: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCESInventors: Shijie Chen, Wenwu Wang, Xiaolei Wang, Kai Han