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).

  • Patent number: 8563415
    Abstract: 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: Grant
    Filed: June 24, 2010
    Date of Patent: October 22, 2013
    Assignee: Institute of Microelectronics, Chinese Academy of Sciences
    Inventors: Wenwu Wang, Shijie Chen, Xiaolei Wang, Kai Han, Dapeng Chen
  • Patent number: 8507991
    Abstract: 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: Grant
    Filed: June 14, 2012
    Date of Patent: August 13, 2013
    Assignee: Institute of Microelectronics, Chinese Academy of Sciences
    Inventors: Wenwu Wang, Kai Han, Shijie Chen, Xiaolei Wang, Dapeng Chen
  • Publication number: 20130092986
    Abstract: 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: Application
    Filed: October 17, 2011
    Publication date: April 18, 2013
    Inventors: Wenwu Wang, Chao Zhao, Kai Han, Dapeng Chen
  • Publication number: 20120261803
    Abstract: 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: Application
    Filed: October 17, 2011
    Publication date: October 18, 2012
    Inventors: Wenwu Wang, Chao Zhao, Kai Han, Dapeng Chen
  • Publication number: 20120261761
    Abstract: 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: Application
    Filed: June 14, 2012
    Publication date: October 18, 2012
    Applicant: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Wenwu Wang, Kai Han, Shijie Chen, Xiaolei Wang, Dapeng Chen
  • Publication number: 20120181612
    Abstract: 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: Application
    Filed: January 13, 2011
    Publication date: July 19, 2012
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Jing-Hwang Yang, Chun-Heng Liao, Hsin-Li Cheng, Liang-Kai Han
  • Patent number: 8222099
    Abstract: 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: Grant
    Filed: June 24, 2010
    Date of Patent: July 17, 2012
    Assignee: Institute of Microelectronics, Chinese Academy of Sciences
    Inventors: Wenwu Wang, Kai Han, Shijie Chen, Xiaolei Wang, Dapeng Chen
  • Publication number: 20120021596
    Abstract: 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: Application
    Filed: September 28, 2010
    Publication date: January 26, 2012
    Applicant: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Kai Han, Wenwu Wang, Xiaolei Wang, Shijie Chen, Dapeng Chen
  • Publication number: 20120012939
    Abstract: 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: Application
    Filed: June 23, 2010
    Publication date: January 19, 2012
    Applicant: INSTITUE OF MICROELELCTRONICS, CHINESE ACADEMY OF SCINECES
    Inventors: Wang Wenwu, Shijie Chen, Xiaolei Wang, Kai Han, Dapeng Chen
  • Publication number: 20110260255
    Abstract: 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: Application
    Filed: June 24, 2010
    Publication date: October 27, 2011
    Applicant: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Wenwu Wang, Shijie Chen, Xiaolei Wang, Kai Han, Dapeng Chen
  • Publication number: 20110254093
    Abstract: 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: Application
    Filed: June 24, 2010
    Publication date: October 20, 2011
    Applicant: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Wenwu Wang, kai Han, Shijie Chen, Xiaolei Wang, Dapeng Chen
  • Publication number: 20110254063
    Abstract: 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: Application
    Filed: September 27, 2010
    Publication date: October 20, 2011
    Applicant: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Shijie Chen, Wenwu Wang, Xiaolei Wang, Kai Han
  • Publication number: 20110227163
    Abstract: The present invention relates to a semiconductor device. Interface layers of different thickness or different materials are used in the NMOS region and the PMOS region of the semiconductor substrate, which not only effectively reduce EOT of the device, especially EOT of the PMOS device, but also increase the electron mobility of the device, especially the electron mobility of the NMOS device, thereby effectively improving the overall performance of the device.
    Type: Application
    Filed: June 23, 2010
    Publication date: September 22, 2011
    Applicant: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Wengwu Wang, Shijie Chen, Kai Han, Xiaolei Wang, Dapeng Chen
  • Publication number: 20110156217
    Abstract: 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: Application
    Filed: December 31, 2009
    Publication date: June 30, 2011
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Alex Kalnitsky, Hsiao-Chin Tuan, Liang-Kai Han, Uway Tseng, Yuan-Chih Hsieh, Hung-Hua Lin
  • Publication number: 20110119746
    Abstract: An identity verification method includes the steps of: i) in response to a login request from a user end, generating and providing a query to the user end; and ii) in response to an answer from the user end, verifying identity of the user end. The query includes indices of a verification table corresponding to the user end that are arranged in a random order in a ring formation, and requires the user end to provide an answer containing code contents of the table corresponding to a user-end selected set of adjacent ones of the indices in the ring formation. Identity of the user end is verified by determining whether the code contents in the answer are found in the table and whether the indices corresponding to the code contents in the answer are adjacent to each other with reference to the ring formation in the query.
    Type: Application
    Filed: November 11, 2010
    Publication date: May 19, 2011
    Inventor: Kai-Han Yang
  • Publication number: 20090150699
    Abstract: Provided is a sleep scheduling method based on directions of a target in a sensor network. A track subregion is set as an oval shape that is in proportion to a probability of the target moving in certain directions so as to track the target, and sleep patterns of sensor nodes in the tracking subregion are scheduled in consideration of a probability of the target moving in certain directions. As such, the energy efficiency of each sensor node in the sensor network can be improved.
    Type: Application
    Filed: November 26, 2008
    Publication date: June 11, 2009
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Hyeon Joong CHO, Sang Joon PARK, Sang Gi HONG, Jong Suk CHAE, Cheol Sig PYO, Bo JIANG, Kai HAN, Binoy RAVINDRAN
  • Patent number: 7534671
    Abstract: A method for integrally forming a metal-oxide-semiconductor (MOS) device and an electrical fuse device on a semiconductor substrate includes the following steps. An isolation structure is formed on the semiconductor substrate. A dielectric layer is deposited over the isolation structure and the semiconductor substrate. A metal layer is deposited on the dielectric layer. A polysilicon layer is deposited on the metal layer. The dielectric layer, the metal layer and the polysilicon layer are patterned into a first stack of the dielectric layer, the metal layer and the polysilicon layer on the isolation structure for functioning as the electrical fuse device, and a second stack of the dielectric layer, the metal layer and the polysilicon layer on the semiconductor substrate for functioning as a gate of the MOS device.
    Type: Grant
    Filed: March 29, 2008
    Date of Patent: May 19, 2009
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chiang-Ming Chuang, Liang-Kai Han
  • Publication number: 20080182373
    Abstract: A method for integrally forming a metal-oxide-semiconductor (MOS) device and an electrical fuse device on a semiconductor substrate includes the following steps. An isolation structure is formed on the semiconductor substrate. A dielectric layer is deposited over the isolation structure and the semiconductor substrate. A metal layer is deposited on the dielectric layer. A polysilicon layer is deposited on the metal layer. The dielectric layer, the metal layer and the polysilicon layer are patterned into a first stack of the dielectric layer, the metal layer and the polysilicon layer on the isolation structure for functioning as the electrical fuse device, and a second stack of the dielectric layer, the metal layer and the polysilicon layer on the semiconductor substrate for functioning as a gate of the MOS device.
    Type: Application
    Filed: March 29, 2008
    Publication date: July 31, 2008
    Inventors: Chiang-Ming Chuang, Liang-Kai Han
  • Patent number: 7361968
    Abstract: A method for integrally forming a metal-oxide-semiconductor (MOS) device and an electrical fuse device on a semiconductor substrate includes the following steps. An isolation structure is formed on the semiconductor substrate. A dielectric layer is deposited over the isolation structure and the semiconductor substrate. A metal layer is deposited on the dielectric layer. A polysilicon layer is deposited on the metal layer. The dielectric layer, the metal layer and the polysilicon layer are patterned into a first stack of the dielectric layer, the metal layer and the polysilicon layer on the isolation structure for functioning as the electrical fuse device, and a second stack of the dielectric layer, the metal layer and the polysilicon layer on the semiconductor substrate for functioning as a gate of the MOS device.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: April 22, 2008
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chiang-Ming Chuang, Liang-Kai Han
  • Patent number: 7321139
    Abstract: A layout for a transistor in a standard cell is disclosed. The layout for a transistor includes an active region with at least one portion having a first edge and at least one portion having a second edge all perpendicular to a channel of the transistor; and a gate placed on top of the active region with a distance from an edge of the gate to the first edge being shorter than a distance from the edge of the gate to the second edge of the active region, wherein the active region is of a non-rectangular shape.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: January 22, 2008
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Mi-Chang Chang, Liang-Kai Han, Huan-Tsung Huang, Wen-Jya Liang, Li-Chun Tien